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cli: format/state refactor for new state format 

format/state now requires provider schemas to properly format output
state. command/show has been modified to pass a context to format.State.
This commit is contained in:
Kristin Laemmert 2018-09-24 09:30:39 -07:00 committed by Martin Atkins
parent e8240087fe
commit 8063f69e5c
274 changed files with 25356 additions and 16425 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

156
command/format/state.go
View File

@ -6,10 +6,13 @@ import (
"sort"
"strings"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/plans"
"github.com/mitchellh/colorstring"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/terraform"
// "github.com/hashicorp/terraform/terraform"
)
// StateOpts are the options for formatting a state.
@ -19,10 +22,6 @@ type StateOpts struct {
// Color is the colorizer. This is optional.
Color *colorstring.Colorize
// ModuleDepth is the depth of the modules to expand. By default this
// is zero which will not expand modules at all.
ModuleDepth int
}
// State takes a state and returns a string
@ -36,65 +35,58 @@ func State(opts *StateOpts) string {
return "The state file is empty. No resources are represented."
}
// FIXME: State formatter not yet updated for new state types
return "FIXME: State formatter not yet updated for new state types"
/*var buf bytes.Buffer
var buf bytes.Buffer
buf.WriteString("[reset]")
p := blockBodyDiffPrinter{
buf: &buf,
color: opts.Color,
action: plans.NoOp,
}
// Format all the modules
for _, m := range s.Modules {
if len(m.Path)-1 <= opts.ModuleDepth || opts.ModuleDepth == -1 {
formatStateModuleExpand(&buf, m, opts)
} else {
formatStateModuleSingle(&buf, m, opts)
}
formatStateModule(&buf, m, opts)
}
// Write the outputs for the root module
m := s.RootModule()
if len(m.Outputs) > 0 {
if m.OutputValues != nil {
if len(m.OutputValues) > 0 {
buf.WriteString("\nOutputs:\n\n")
}
// Sort the outputs
ks := make([]string, 0, len(m.Outputs))
for k, _ := range m.Outputs {
ks := make([]string, 0, len(m.OutputValues))
for k := range m.OutputValues {
ks = append(ks, k)
}
sort.Strings(ks)
// Output each output k/v pair
for _, k := range ks {
v := m.Outputs[k]
switch output := v.Value.(type) {
case string:
buf.WriteString(fmt.Sprintf("%s = %s", k, output))
buf.WriteString("\n")
case []interface{}:
buf.WriteString(formatListOutput("", k, output))
buf.WriteString("\n")
case map[string]interface{}:
buf.WriteString(formatMapOutput("", k, output))
buf.WriteString("\n")
}
v := m.OutputValues[k]
buf.WriteString(fmt.Sprintf("%s = ", k))
p.writeValue(v.Value, plans.NoOp, 0)
}
}
return opts.Color.Color(strings.TrimSpace(buf.String()))
*/
}
func formatStateModuleExpand(
buf *bytes.Buffer, m *terraform.ModuleState, opts *StateOpts) {
func formatStateModule(
buf *bytes.Buffer, m *states.Module, opts *StateOpts) {
var moduleName string
if !m.IsRoot() {
moduleName = fmt.Sprintf("module.%s", strings.Join(m.Path[1:], "."))
if !m.Addr.IsRoot() {
moduleName = fmt.Sprintf("module.%s", m.Addr.String())
}
// First get the names of all the resources so we can show them
// in alphabetical order.
names := make([]string, 0, len(m.Resources))
for name, _ := range m.Resources {
for name := range m.Resources {
names = append(names, name)
}
sort.Strings(names)
@ -106,57 +98,71 @@ func formatStateModuleExpand(
name = moduleName + "." + name
}
rs := m.Resources[k]
is := rs.Primary
var id string
if is != nil {
id = is.ID
}
if id == "" {
id = "<not created>"
addr := m.Resources[k].Addr
switch addr.Mode {
case addrs.ManagedResourceMode:
buf.WriteString(fmt.Sprintf(
"resource %q %q",
addr.Type,
addr.Name,
))
case addrs.DataResourceMode:
buf.WriteString(fmt.Sprintf(
"data %q %q ",
addr.Type,
addr.Name,
))
default:
// should never happen, since the above is exhaustive
buf.WriteString(addr.String())
}
taintStr := ""
if rs.Primary != nil && rs.Primary.Tainted {
taintStr = " (tainted)"
buf.WriteString(" { attrs go here! }\n")
}
buf.WriteString(fmt.Sprintf("%s:%s\n", name, taintStr))
buf.WriteString(fmt.Sprintf(" id = %s\n", id))
// rs := m.Resources[k]
// is := rs.Instance
// var id string
// if is != nil {
// id = is
// }
// if id == "" {
// id = "<not created>"
// }
if is != nil {
// Sort the attributes
attrKeys := make([]string, 0, len(is.Attributes))
for ak, _ := range is.Attributes {
// Skip the id attribute since we just show the id directly
if ak == "id" {
continue
}
// taintStr := ""
// // if rs.Primary != nil && rs.Primary.Tainted {
// // taintStr = " (tainted)"
// // }
attrKeys = append(attrKeys, ak)
}
sort.Strings(attrKeys)
// buf.WriteString(fmt.Sprintf("%s:%s\n", name, taintStr))
// buf.WriteString(fmt.Sprintf(" id = %s\n", id))
// Output each attribute
for _, ak := range attrKeys {
av := is.Attributes[ak]
buf.WriteString(fmt.Sprintf(" %s = %s\n", ak, av))
}
}
}
// if is != nil {
// // Sort the attributes
// attrKeys := make([]string, 0, len(is.Attributes))
// for ak, _ := range is.Attributes {
// // Skip the id attribute since we just show the id directly
// if ak == "id" {
// continue
// }
// attrKeys = append(attrKeys, ak)
// }
// sort.Strings(attrKeys)
// // Output each attribute
// for _, ak := range attrKeys {
// av := is.Attributes[ak]
// buf.WriteString(fmt.Sprintf(" %s = %s\n", ak, av))
// }
// }
// }
buf.WriteString("[reset]\n")
}
func formatStateModuleSingle(
buf *bytes.Buffer, m *terraform.ModuleState, opts *StateOpts) {
// Header with the module name
buf.WriteString(fmt.Sprintf("module.%s\n", strings.Join(m.Path[1:], ".")))
// Now just write how many resources are in here.
buf.WriteString(fmt.Sprintf(" %d resource(s)\n", len(m.Resources)))
}
func formatNestedList(indent string, outputList []interface{}) string {
outputBuf := new(bytes.Buffer)
outputBuf.WriteString(fmt.Sprintf("%s[", indent))

82
command/format/state_test.go Normal file
View File

@ -0,0 +1,82 @@
package format
import (
"fmt"
"testing"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/states"
"github.com/mitchellh/colorstring"
"github.com/zclconf/go-cty/cty"
)
var disabledColorize = &colorstring.Colorize{
Colors: colorstring.DefaultColors,
Disable: true,
}
func TestState(t *testing.T) {
state := states.NewState()
rootModule := state.RootModule()
if rootModule == nil {
t.Errorf("root module is nil; want valid object")
}
rootModule.SetLocalValue("foo", cty.StringVal("foo value"))
rootModule.SetOutputValue("bar", cty.StringVal("bar value"), false)
rootModule.SetResourceInstanceCurrent(
addrs.Resource{
Mode: addrs.ManagedResourceMode,
Type: "test_thing",
Name: "baz",
}.Instance(addrs.IntKey(0)),
&states.ResourceInstanceObjectSrc{
Status: states.ObjectReady,
SchemaVersion: 1,
AttrsJSON: []byte(`{"woozles":"confuzles"}`),
},
addrs.ProviderConfig{
Type: "test",
}.Absolute(addrs.RootModuleInstance),
)
tests := []struct {
State *StateOpts
Want string
}{
{
&StateOpts{
State: &states.State{},
Color: disabledColorize,
},
"The state file is empty. No resources are represented.",
},
{
&StateOpts{
State: state,
Color: disabledColorize,
},
"module.test_module.test_resource.foo",
},
}
for _, tt := range tests {
got := State(tt.State)
if got != tt.Want {
t.Errorf(
"wrong result\ninput: %v\ngot: %s\nwant: %s",
tt.State.State, got, tt.Want,
)
}
}
}
func mustParseModuleInstanceStr(s string) addrs.ModuleInstance {
addr, err := addrs.ParseModuleInstanceStr(s)
if err != nil {
fmt.Printf(err.Err().Error())
panic(err)
}
return addr
}

4
command/show.go
View File

@ -21,7 +21,6 @@ type ShowCommand struct {
}
func (c *ShowCommand) Run(args []string) int {
var moduleDepth int
args, err := c.Meta.process(args, false)
if err != nil {
@ -29,7 +28,7 @@ func (c *ShowCommand) Run(args []string) int {
}
cmdFlags := flag.NewFlagSet("show", flag.ContinueOnError)
c.addModuleDepthFlag(cmdFlags, &moduleDepth)
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
@ -121,7 +120,6 @@ func (c *ShowCommand) Run(args []string) int {
c.Ui.Output(format.State(&format.StateOpts{
State: state,
Color: c.Colorize(),
ModuleDepth: moduleDepth,
}))
return 0
}

23
go.mod
View File

@ -2,6 +2,7 @@ module github.com/hashicorp/terraform
require (
cloud.google.com/go v0.15.0
contrib.go.opencensus.io/exporter/stackdriver v0.6.0 // indirect
github.com/Azure/azure-sdk-for-go v10.3.0-beta+incompatible
github.com/Azure/go-autorest v8.3.1+incompatible
github.com/Azure/go-ntlmssp v0.0.0-20170803034930-c92175d54006 // indirect
@ -19,7 +20,6 @@ require (
github.com/armon/go-radix v0.0.0-20160115234725-4239b77079c7 // indirect
github.com/aws/aws-sdk-go v1.14.31
github.com/beevik/etree v0.0.0-20171015221209-af219c0c7ea1 // indirect
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
github.com/bgentry/go-netrc v0.0.0-20140422174119-9fd32a8b3d3d // indirect
github.com/bgentry/speakeasy v0.0.0-20161015143505-675b82c74c0e // indirect
github.com/blang/semver v0.0.0-20170202183821-4a1e882c79dc
@ -40,6 +40,7 @@ require (
github.com/ghodss/yaml v1.0.0 // indirect
github.com/go-test/deep v1.0.1
github.com/gogo/protobuf v0.0.0-20180821102207-98f6aa8b3bcf // indirect
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
github.com/golang/groupcache v0.0.0-20180513044358-24b0969c4cb7 // indirect
github.com/golang/mock v0.0.0-20180503014854-22bbf0ddf081
github.com/golang/protobuf v1.2.0
@ -89,8 +90,7 @@ require (
github.com/mattn/go-colorable v0.0.0-20160220075935-9cbef7c35391
github.com/mattn/go-isatty v0.0.0-20161123143637-30a891c33c7c // indirect
github.com/mattn/go-shellwords v1.0.1
github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
github.com/miekg/dns v1.0.13 // indirect
github.com/miekg/dns v1.0.8 // indirect
github.com/mitchellh/cli v0.0.0-20171129193617-33edc47170b5
github.com/mitchellh/colorstring v0.0.0-20150917214807-8631ce90f286
github.com/mitchellh/copystructure v0.0.0-20170525013902-d23ffcb85de3
@ -110,7 +110,6 @@ require (
github.com/pkg/errors v0.0.0-20170505043639-c605e284fe17 // indirect
github.com/posener/complete v0.0.0-20171219111128-6bee943216c8
github.com/prometheus/client_golang v0.9.0 // indirect
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 // indirect
github.com/prometheus/common v0.0.0-20181015124227-bcb74de08d37 // indirect
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d // indirect
github.com/satori/go.uuid v0.0.0-20160927100844-b061729afc07 // indirect
@ -129,15 +128,13 @@ require (
github.com/xanzy/ssh-agent v0.1.0
github.com/xiang90/probing v0.0.0-20160813154853-07dd2e8dfe18 // indirect
github.com/xlab/treeprint v0.0.0-20161029104018-1d6e34225557
github.com/zclconf/go-cty v0.0.0-20180925180032-d9b87d891d0b
golang.org/x/crypto v0.0.0-20180910181607-0e37d006457b
golang.org/x/net v0.0.0-20180925072008-f04abc6bdfa7
golang.org/x/oauth2 v0.0.0-20170928010508-bb50c06baba3
golang.org/x/sys v0.0.0-20180925112736-b09afc3d579e // indirect
github.com/zclconf/go-cty v0.0.0-20180907002636-07dee8a1cfd4
go.opencensus.io v0.17.0 // indirect
golang.org/x/crypto v0.0.0-20180816225734-aabede6cba87
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be
golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2 // indirect
google.golang.org/api v0.0.0-20171005000305-7a7376eff6a5
google.golang.org/appengine v1.2.0 // indirect
google.golang.org/genproto v0.0.0-20171002232614-f676e0f3ac63 // indirect
google.golang.org/grpc v0.0.0-20170809211603-7657092a1303
google.golang.org/api v0.0.0-20180921000521-920bb1beccf7
google.golang.org/grpc v1.14.0
gopkg.in/vmihailenco/msgpack.v2 v2.9.1 // indirect
)

49
go.sum
View File

@ -1,5 +1,8 @@
cloud.google.com/go v0.15.0 h1:/e2wXYguItvFu4fJCvhMRPIwwrimuUxI+aCVx/ahLjg=
cloud.google.com/go v0.15.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
contrib.go.opencensus.io/exporter/stackdriver v0.6.0 h1:U0FQWsZU3aO8W+BrZc88T8fdd24qe3Phawa9V9oaVUE=
contrib.go.opencensus.io/exporter/stackdriver v0.6.0/go.mod h1:QeFzMJDAw8TXt5+aRaSuE8l5BwaMIOIlaVkBOPRuMuw=
git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
github.com/Azure/azure-sdk-for-go v10.3.0-beta+incompatible h1:TP+nmGmOP7psi7CvIq/1pCliRBRj73vmMTDjaPrTnr8=
github.com/Azure/azure-sdk-for-go v10.3.0-beta+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
github.com/Azure/go-autorest v8.3.1+incompatible h1:1+jMCOJcCh3GmI7FGJVOo8AlfPWDyjS7fLbbkZGzEGY=
@ -82,6 +85,8 @@ github.com/go-test/deep v1.0.1 h1:UQhStjbkDClarlmv0am7OXXO4/GaPdCGiUiMTvi28sg=
github.com/go-test/deep v1.0.1/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
github.com/gogo/protobuf v0.0.0-20180821102207-98f6aa8b3bcf h1:0nBDY6WfT0ChlHhvNcGw3BTjyDOtCom2yQTVBJv3MHg=
github.com/gogo/protobuf v0.0.0-20180821102207-98f6aa8b3bcf/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20180513044358-24b0969c4cb7 h1:u4bArs140e9+AfE52mFHOXVFnOSBJBRlzTHrOPLOIhE=
github.com/golang/groupcache v0.0.0-20180513044358-24b0969c4cb7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/mock v0.0.0-20180503014854-22bbf0ddf081 h1:/tM41IiBUAMGD+3XxXi4PjGhckCkPN4wu8UIAMAUKmc=
@ -196,8 +201,8 @@ github.com/mattn/go-shellwords v1.0.1 h1:2/mQs/EosKUge1MHnAavnrNwa0wLnWDjG4dTYMG
github.com/mattn/go-shellwords v1.0.1/go.mod h1:3xCvwCdWdlDJUrvuMn7Wuy9eWs4pE8vqg+NOMyg4B2o=
github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/miekg/dns v1.0.13 h1:Y72t3Ody/fSEkLQOC49kG0ALF7b8ax2TouzPFgIT40E=
github.com/miekg/dns v1.0.13/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
github.com/miekg/dns v1.0.8 h1:Zi8HNpze3NeRWH1PQV6O71YcvJRQ6j0lORO6DAEmAAI=
github.com/miekg/dns v1.0.8/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
github.com/mitchellh/cli v0.0.0-20171129193617-33edc47170b5 h1:OYr3N2fY3e3kP/x/d81CJXlcZrIV2hH8gPnuRLpiME4=
github.com/mitchellh/cli v0.0.0-20171129193617-33edc47170b5/go.mod h1:oGumspjLm2kTyiT1QMGpFqRlmxnKHfCvhZEVnx+5UeE=
github.com/mitchellh/colorstring v0.0.0-20150917214807-8631ce90f286 h1:KHyL+3mQOF9sPfs26lsefckcFNDcIZtiACQiECzIUkw=
@ -228,6 +233,7 @@ github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d h1:VhgPp6v9qf9Agr/
github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d/go.mod h1:YUTz3bUH2ZwIWBy3CJBeOBEugqcmXREj14T+iG/4k4U=
github.com/oklog/run v1.0.0 h1:Ru7dDtJNOyC66gQ5dQmaCa0qIsAUFY3sFpK1Xk8igrw=
github.com/oklog/run v1.0.0/go.mod h1:dlhp/R75TPv97u0XWUtDeV/lRKWPKSdTuV0TZvrmrQA=
github.com/openzipkin/zipkin-go v0.1.1/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
github.com/packer-community/winrmcp v0.0.0-20180102160824-81144009af58 h1:m3CEgv3ah1Rhy82L+c0QG/U3VyY1UsvsIdkh0/rU97Y=
github.com/packer-community/winrmcp v0.0.0-20180102160824-81144009af58/go.mod h1:f6Izs6JvFTdnRbziASagjZ2vmf55NSIkC/weStxCHqk=
github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c h1:Lgl0gzECD8GnQ5QCWA8o6BtfL6mDH5rQgM4/fX3avOs=
@ -238,12 +244,15 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/posener/complete v0.0.0-20171219111128-6bee943216c8 h1:lcb1zvdlaZyEbl2OXifN3uOYYyIvllofUbmp9bwbL+0=
github.com/posener/complete v0.0.0-20171219111128-6bee943216c8/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_golang v0.9.0 h1:tXuTFVHC03mW0D+Ua1Q2d1EAVqLTuggX50V0VLICCzY=
github.com/prometheus/client_golang v0.9.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 h1:idejC8f05m9MGOsuEi1ATq9shN03HrxNkD/luQvxCv8=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
github.com/prometheus/common v0.0.0-20181015124227-bcb74de08d37 h1:Y7YdJ9Xb3MoQOzAWXnDunAJYpvhVwZdTirNfGUgPKaA=
github.com/prometheus/common v0.0.0-20181015124227-bcb74de08d37/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
github.com/prometheus/procfs v0.0.0-20180725123919-05ee40e3a273/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d h1:GoAlyOgbOEIFdaDqxJVlbOQ1DtGmZWs/Qau0hIlk+WQ=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/satori/go.uuid v0.0.0-20160927100844-b061729afc07 h1:DEZDfcCVq3xDJrjqdCgyN/dHYVoqR92MCsdqCdxmnhM=
@ -286,39 +295,37 @@ github.com/xiang90/probing v0.0.0-20160813154853-07dd2e8dfe18/go.mod h1:UETIi67q
github.com/xlab/treeprint v0.0.0-20161029104018-1d6e34225557 h1:Jpn2j6wHkC9wJv5iMfJhKqrZJx3TahFx+7sbZ7zQdxs=
github.com/xlab/treeprint v0.0.0-20161029104018-1d6e34225557/go.mod h1:ce1O1j6UtZfjr22oyGxGLbauSBp2YVXpARAosm7dHBg=
github.com/zclconf/go-cty v0.0.0-20180815031001-58bb2bc0302a/go.mod h1:xnAOWiHeOqg2nWS62VtQ7pbOu17FtxJNW8RLEih+O3s=
github.com/zclconf/go-cty v0.0.0-20180925180032-d9b87d891d0b h1:9rQAtgrPBuyPjmPEcx4pqJs6D+u41FYbbVE/hhdsrtk=
github.com/zclconf/go-cty v0.0.0-20180925180032-d9b87d891d0b/go.mod h1:xnAOWiHeOqg2nWS62VtQ7pbOu17FtxJNW8RLEih+O3s=
github.com/zclconf/go-cty v0.0.0-20180907002636-07dee8a1cfd4 h1:C02D0gjAVFMKqFUaZvaZK2YWGK1HAQwVTZWDAENYDjA=
github.com/zclconf/go-cty v0.0.0-20180907002636-07dee8a1cfd4/go.mod h1:xnAOWiHeOqg2nWS62VtQ7pbOu17FtxJNW8RLEih+O3s=
go.opencensus.io v0.17.0 h1:2Cu88MYg+1LU+WVD+NWwYhyP0kKgRlN9QjWGaX0jKTE=
go.opencensus.io v0.17.0/go.mod h1:mp1VrMQxhlqqDpKvH4UcQUa4YwlzNmymAjPrDdfxNpI=
golang.org/x/crypto v0.0.0-20180816225734-aabede6cba87 h1:gCHhzI+1R9peHIMyiWVxoVaWlk1cYK7VThX5ptLtbXY=
golang.org/x/crypto v0.0.0-20180816225734-aabede6cba87/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20180910181607-0e37d006457b h1:2b9XGzhjiYsYPnKXoEfL7klWZQIt8IfyRCz62gCqqlQ=
golang.org/x/crypto v0.0.0-20180910181607-0e37d006457b/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180811021610-c39426892332 h1:efGso+ep0DjyCBJPjvoz0HI6UldX4Md2F1rZFe1ir0E=
golang.org/x/net v0.0.0-20180811021610-c39426892332/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180925072008-f04abc6bdfa7 h1:zKzVgSQ8WOSHzD7I4k8LQjrHUUCNOlBsgc0PcYLVNnY=
golang.org/x/net v0.0.0-20180925072008-f04abc6bdfa7/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/oauth2 v0.0.0-20170928010508-bb50c06baba3 h1:YGx0PRKSN/2n/OcdFycCC0JUA/Ln+i5lPcN8VoNDus0=
golang.org/x/oauth2 v0.0.0-20170928010508-bb50c06baba3/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd h1:nTDtHvHSdCn1m6ITfMRqtOd/9+7a3s8RBNOZ3eYZzJA=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be h1:vEDujvNQGv4jgYKudGeI/+DAX4Jffq6hpD55MmoEvKs=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180816055513-1c9583448a9c h1:uHnKXcvx6SNkuwC+nrzxkJ+TpPwZOtumbhWrrOYN5YA=
golang.org/x/sys v0.0.0-20180816055513-1c9583448a9c/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180925112736-b09afc3d579e h1:LSlw/Dbj0MkNvPYAAkGinYmGliq+aqS7eKPYlE4oWC4=
golang.org/x/sys v0.0.0-20180925112736-b09afc3d579e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e h1:o3PsSEY8E4eXWkXrIP9YJALUkVZqzHJT5DOasTyn8Vs=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2 h1:+DCIGbF/swA92ohVg0//6X2IVY3KZs6p9mix0ziNYJM=
golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
google.golang.org/api v0.0.0-20171005000305-7a7376eff6a5 h1:PDkJGYjSvxJyevtZRGmBSO+HjbIKuqYEEc8gB51or4o=
google.golang.org/api v0.0.0-20171005000305-7a7376eff6a5/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
google.golang.org/api v0.0.0-20180921000521-920bb1beccf7 h1:XKT3Wlpn+o6Car1ot74Z4R+R9CeRfITCLZb0Q9/mpx4=
google.golang.org/api v0.0.0-20180921000521-920bb1beccf7/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
google.golang.org/appengine v1.1.0 h1:igQkv0AAhEIvTEpD5LIpAfav2eeVO9HBTjvKHVJPRSs=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.2.0 h1:S0iUepdCWODXRvtE+gcRDd15L+k+k1AiHlMiMjefH24=
google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/genproto v0.0.0-20171002232614-f676e0f3ac63 h1:yNBw5bwywOTguAu+h6SkCUaWdEZ7ZXgfiwb2YTN1eQw=
google.golang.org/genproto v0.0.0-20171002232614-f676e0f3ac63/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/grpc v0.0.0-20170809211603-7657092a1303 h1:C5gwSQxZkG33JZoP+ZjEclrLu6DIRLVw743KKZfIXP4=
google.golang.org/grpc v0.0.0-20170809211603-7657092a1303/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
google.golang.org/genproto v0.0.0-20180831171423-11092d34479b h1:lohp5blsw53GBXtLyLNaTXPXS9pJ1tiTw61ZHUoE9Qw=
google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/grpc v1.14.0 h1:ArxJuB1NWfPY6r9Gp9gqwplT0Ge7nqv9msgu03lHLmo=
google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

1
vendor/contrib.go.opencensus.io/exporter/stackdriver/AUTHORS generated vendored Normal file
View File

@ -0,0 +1 @@
Google Inc.

202
vendor/contrib.go.opencensus.io/exporter/stackdriver/LICENSE generated vendored Normal file
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@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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for use, reproduction, or distribution of Your modifications, or
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the terms of any separate license agreement you may have executed
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of your accepting any such warranty or additional liability.
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APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
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Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

94
vendor/contrib.go.opencensus.io/exporter/stackdriver/propagation/http.go generated vendored Normal file
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@ -0,0 +1,94 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package propagation implement X-Cloud-Trace-Context header propagation used
// by Google Cloud products.
package propagation // import "contrib.go.opencensus.io/exporter/stackdriver/propagation"
import (
"encoding/binary"
"encoding/hex"
"fmt"
"net/http"
"strconv"
"strings"
"go.opencensus.io/trace"
"go.opencensus.io/trace/propagation"
)
const (
httpHeaderMaxSize = 200
httpHeader = `X-Cloud-Trace-Context`
)
var _ propagation.HTTPFormat = (*HTTPFormat)(nil)
// HTTPFormat implements propagation.HTTPFormat to propagate
// traces in HTTP headers for Google Cloud Platform and Stackdriver Trace.
type HTTPFormat struct{}
// SpanContextFromRequest extracts a Stackdriver Trace span context from incoming requests.
func (f *HTTPFormat) SpanContextFromRequest(req *http.Request) (sc trace.SpanContext, ok bool) {
h := req.Header.Get(httpHeader)
// See https://cloud.google.com/trace/docs/faq for the header HTTPFormat.
// Return if the header is empty or missing, or if the header is unreasonably
// large, to avoid making unnecessary copies of a large string.
if h == "" || len(h) > httpHeaderMaxSize {
return trace.SpanContext{}, false
}
// Parse the trace id field.
slash := strings.Index(h, `/`)
if slash == -1 {
return trace.SpanContext{}, false
}
tid, h := h[:slash], h[slash+1:]
buf, err := hex.DecodeString(tid)
if err != nil {
return trace.SpanContext{}, false
}
copy(sc.TraceID[:], buf)
// Parse the span id field.
spanstr := h
semicolon := strings.Index(h, `;`)
if semicolon != -1 {
spanstr, h = h[:semicolon], h[semicolon+1:]
}
sid, err := strconv.ParseUint(spanstr, 10, 64)
if err != nil {
return trace.SpanContext{}, false
}
binary.BigEndian.PutUint64(sc.SpanID[:], sid)
// Parse the options field, options field is optional.
if !strings.HasPrefix(h, "o=") {
return sc, true
}
o, err := strconv.ParseUint(h[2:], 10, 64)
if err != nil {
return trace.SpanContext{}, false
}
sc.TraceOptions = trace.TraceOptions(o)
return sc, true
}
// SpanContextToRequest modifies the given request to include a Stackdriver Trace header.
func (f *HTTPFormat) SpanContextToRequest(sc trace.SpanContext, req *http.Request) {
sid := binary.BigEndian.Uint64(sc.SpanID[:])
header := fmt.Sprintf("%s/%d;o=%d", hex.EncodeToString(sc.TraceID[:]), sid, int64(sc.TraceOptions))
req.Header.Set(httpHeader, header)
}

385
vendor/github.com/zclconf/go-cty/cty/function/stdlib/datetime.go generated vendored
View File

@ -1,385 +0,0 @@
package stdlib
import (
"bufio"
"bytes"
"fmt"
"strings"
"time"
"github.com/zclconf/go-cty/cty"
"github.com/zclconf/go-cty/cty/function"
)
var FormatDateFunc = function.New(&function.Spec{
Params: []function.Parameter{
{
Name: "format",
Type: cty.String,
},
{
Name: "time",
Type: cty.String,
},
},
Type: function.StaticReturnType(cty.String),
Impl: func(args []cty.Value, retType cty.Type) (cty.Value, error) {
formatStr := args[0].AsString()
timeStr := args[1].AsString()
t, err := parseTimestamp(timeStr)
if err != nil {
return cty.DynamicVal, function.NewArgError(1, err)
}
var buf bytes.Buffer
sc := bufio.NewScanner(strings.NewReader(formatStr))
sc.Split(splitDateFormat)
const esc = '\''
for sc.Scan() {
tok := sc.Bytes()
// The leading byte signals the token type
switch {
case tok[0] == esc:
if tok[len(tok)-1] != esc || len(tok) == 1 {
return cty.DynamicVal, function.NewArgErrorf(0, "unterminated literal '")
}
if len(tok) == 2 {
// Must be a single escaped quote, ''
buf.WriteByte(esc)
} else {
// The content (until a closing esc) is printed out verbatim
// except that we must un-double any double-esc escapes in
// the middle of the string.
raw := tok[1 : len(tok)-1]
for i := 0; i < len(raw); i++ {
buf.WriteByte(raw[i])
if raw[i] == esc {
i++ // skip the escaped quote
}
}
}
case startsDateFormatVerb(tok[0]):
switch tok[0] {
case 'Y':
y := t.Year()
switch len(tok) {
case 2:
fmt.Fprintf(&buf, "%02d", y%100)
case 4:
fmt.Fprintf(&buf, "%04d", y)
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: year must either be \"YY\" or \"YYYY\"", tok)
}
case 'M':
m := t.Month()
switch len(tok) {
case 1:
fmt.Fprintf(&buf, "%d", m)
case 2:
fmt.Fprintf(&buf, "%02d", m)
case 3:
buf.WriteString(m.String()[:3])
case 4:
buf.WriteString(m.String())
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: month must be \"M\", \"MM\", \"MMM\", or \"MMMM\"", tok)
}
case 'D':
d := t.Day()
switch len(tok) {
case 1:
fmt.Fprintf(&buf, "%d", d)
case 2:
fmt.Fprintf(&buf, "%02d", d)
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: day of month must either be \"D\" or \"DD\"", tok)
}
case 'E':
d := t.Weekday()
switch len(tok) {
case 3:
buf.WriteString(d.String()[:3])
case 4:
buf.WriteString(d.String())
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: day of week must either be \"EEE\" or \"EEEE\"", tok)
}
case 'h':
h := t.Hour()
switch len(tok) {
case 1:
fmt.Fprintf(&buf, "%d", h)
case 2:
fmt.Fprintf(&buf, "%02d", h)
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: 24-hour must either be \"h\" or \"hh\"", tok)
}
case 'H':
h := t.Hour() % 12
if h == 0 {
h = 12
}
switch len(tok) {
case 1:
fmt.Fprintf(&buf, "%d", h)
case 2:
fmt.Fprintf(&buf, "%02d", h)
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: 12-hour must either be \"H\" or \"HH\"", tok)
}
case 'A', 'a':
if len(tok) != 2 {
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: must be \"%s%s\"", tok, tok[0:1], tok[0:1])
}
upper := tok[0] == 'A'
switch t.Hour() / 12 {
case 0:
if upper {
buf.WriteString("AM")
} else {
buf.WriteString("am")
}
case 1:
if upper {
buf.WriteString("PM")
} else {
buf.WriteString("pm")
}
}
case 'm':
m := t.Minute()
switch len(tok) {
case 1:
fmt.Fprintf(&buf, "%d", m)
case 2:
fmt.Fprintf(&buf, "%02d", m)
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: minute must either be \"m\" or \"mm\"", tok)
}
case 's':
s := t.Second()
switch len(tok) {
case 1:
fmt.Fprintf(&buf, "%d", s)
case 2:
fmt.Fprintf(&buf, "%02d", s)
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: second must either be \"s\" or \"ss\"", tok)
}
case 'Z':
// We'll just lean on Go's own formatter for this one, since
// the necessary information is unexported.
switch len(tok) {
case 1:
buf.WriteString(t.Format("Z07:00"))
case 3:
str := t.Format("-0700")
switch str {
case "+0000":
buf.WriteString("UTC")
default:
buf.WriteString(str)
}
case 4:
buf.WriteString(t.Format("-0700"))
case 5:
buf.WriteString(t.Format("-07:00"))
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q: timezone must be Z, ZZZZ, or ZZZZZ", tok)
}
default:
return cty.DynamicVal, function.NewArgErrorf(0, "invalid date format verb %q", tok)
}
default:
// Any other starting character indicates a literal sequence
buf.Write(tok)
}
}
return cty.StringVal(buf.String()), nil
},
})
// FormatDate reformats a timestamp given in RFC3339 syntax into another time
// syntax defined by a given format string.
//
// The format string uses letter mnemonics to represent portions of the
// timestamp, with repetition signifying length variants of each portion.
// Single quote characters ' can be used to quote sequences of literal letters
// that should not be interpreted as formatting mnemonics.
//
// The full set of supported mnemonic sequences is listed below:
//
// YY Year modulo 100 zero-padded to two digits, like "06".
// YYYY Four (or more) digit year, like "2006".
// M Month number, like "1" for January.
// MM Month number zero-padded to two digits, like "01".
// MMM English month name abbreviated to three letters, like "Jan".
// MMMM English month name unabbreviated, like "January".
// D Day of month number, like "2".
// DD Day of month number zero-padded to two digits, like "02".
// EEE English day of week name abbreviated to three letters, like "Mon".
// EEEE English day of week name unabbreviated, like "Monday".
// h 24-hour number, like "2".
// hh 24-hour number zero-padded to two digits, like "02".
// H 12-hour number, like "2".
// HH 12-hour number zero-padded to two digits, like "02".
// AA Hour AM/PM marker in uppercase, like "AM".
// aa Hour AM/PM marker in lowercase, like "am".
// m Minute within hour, like "5".
// mm Minute within hour zero-padded to two digits, like "05".
// s Second within minute, like "9".
// ss Second within minute zero-padded to two digits, like "09".
// ZZZZ Timezone offset with just sign and digit, like "-0800".
// ZZZZZ Timezone offset with colon separating hours and minutes, like "-08:00".
// Z Like ZZZZZ but with a special case "Z" for UTC.
// ZZZ Like ZZZZ but with a special case "UTC" for UTC.
//
// The format syntax is optimized mainly for generating machine-oriented
// timestamps rather than human-oriented timestamps; the English language
// portions of the output reflect the use of English names in a number of
// machine-readable date formatting standards. For presentation to humans,
// a locale-aware time formatter (not included in this package) is a better
// choice.
//
// The format syntax is not compatible with that of any other language, but
// is optimized so that patterns for common standard date formats can be
// recognized quickly even by a reader unfamiliar with the format syntax.
func FormatDate(format cty.Value, timestamp cty.Value) (cty.Value, error) {
return FormatDateFunc.Call([]cty.Value{format, timestamp})
}
func parseTimestamp(ts string) (time.Time, error) {
t, err := time.Parse(time.RFC3339, ts)
if err != nil {
switch err := err.(type) {
case *time.ParseError:
// If err is s time.ParseError then its string representation is not
// appropriate since it relies on details of Go's strange date format
// representation, which a caller of our functions is not expected
// to be familiar with.
//
// Therefore we do some light transformation to get a more suitable
// error that should make more sense to our callers. These are
// still not awesome error messages, but at least they refer to
// the timestamp portions by name rather than by Go's example
// values.
if err.LayoutElem == "" && err.ValueElem == "" && err.Message != "" {
// For some reason err.Message is populated with a ": " prefix
// by the time package.
return time.Time{}, fmt.Errorf("not a valid RFC3339 timestamp%s", err.Message)
}
var what string
switch err.LayoutElem {
case "2006":
what = "year"
case "01":
what = "month"
case "02":
what = "day of month"
case "15":
what = "hour"
case "04":
what = "minute"
case "05":
what = "second"
case "Z07:00":
what = "UTC offset"
case "T":
return time.Time{}, fmt.Errorf("not a valid RFC3339 timestamp: missing required time introducer 'T'")
case ":", "-":
if err.ValueElem == "" {
return time.Time{}, fmt.Errorf("not a valid RFC3339 timestamp: end of string where %q is expected", err.LayoutElem)
} else {
return time.Time{}, fmt.Errorf("not a valid RFC3339 timestamp: found %q where %q is expected", err.ValueElem, err.LayoutElem)
}
default:
// Should never get here, because time.RFC3339 includes only the
// above portions, but since that might change in future we'll
// be robust here.
what = "timestamp segment"
}
if err.ValueElem == "" {
return time.Time{}, fmt.Errorf("not a valid RFC3339 timestamp: end of string before %s", what)
} else {
return time.Time{}, fmt.Errorf("not a valid RFC3339 timestamp: cannot use %q as %s", err.ValueElem, what)
}
}
return time.Time{}, err
}
return t, nil
}
// splitDataFormat is a bufio.SplitFunc used to tokenize a date format.
func splitDateFormat(data []byte, atEOF bool) (advance int, token []byte, err error) {
if len(data) == 0 {
return 0, nil, nil
}
const esc = '\''
switch {
case data[0] == esc:
// If we have another quote immediately after then this is a single
// escaped escape.
if len(data) > 1 && data[1] == esc {
return 2, data[:2], nil
}
// Beginning of quoted sequence, so we will seek forward until we find
// the closing quote, ignoring escaped quotes along the way.
for i := 1; i < len(data); i++ {
if data[i] == esc {
if (i + 1) == len(data) {
// We need at least one more byte to decide if this is an
// escape or a terminator.
return 0, nil, nil
}
if data[i+1] == esc {
i++ // doubled-up quotes are an escape sequence
continue
}
// We've found the closing quote
return i + 1, data[:i+1], nil
}
}
// If we fall out here then we need more bytes to find the end,
// unless we're already at the end with an unclosed quote.
if atEOF {
return len(data), data, nil
}
return 0, nil, nil
case startsDateFormatVerb(data[0]):
rep := data[0]
for i := 1; i < len(data); i++ {
if data[i] != rep {
return i, data[:i], nil
}
}
if atEOF {
return len(data), data, nil
}
// We need more data to decide if we've found the end
return 0, nil, nil
default:
for i := 1; i < len(data); i++ {
if data[i] == esc || startsDateFormatVerb(data[i]) {
return i, data[:i], nil
}
}
// We might not actually be at the end of a literal sequence,
// but that doesn't matter since we'll concat them back together
// anyway.
return len(data), data, nil
}
}
func startsDateFormatVerb(b byte) bool {
return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z')
}

34
vendor/github.com/zclconf/go-cty/cty/msgpack/unmarshal.go generated vendored
View File

@ -138,10 +138,7 @@ func unmarshalList(dec *msgpack.Decoder, ety cty.Type, path cty.Path) (cty.Value
return cty.DynamicVal, path.NewErrorf("a list is required")
}
switch {
case length < 0:
return cty.NullVal(cty.List(ety)), nil
case length == 0:
if length == 0 {
return cty.ListValEmpty(ety), nil
}
@ -169,10 +166,7 @@ func unmarshalSet(dec *msgpack.Decoder, ety cty.Type, path cty.Path) (cty.Value,
return cty.DynamicVal, path.NewErrorf("a set is required")
}
switch {
case length < 0:
return cty.NullVal(cty.Set(ety)), nil
case length == 0:
if length == 0 {
return cty.SetValEmpty(ety), nil
}
@ -200,10 +194,7 @@ func unmarshalMap(dec *msgpack.Decoder, ety cty.Type, path cty.Path) (cty.Value,
return cty.DynamicVal, path.NewErrorf("a map is required")
}
switch {
case length < 0:
return cty.NullVal(cty.Map(ety)), nil
case length == 0:
if length == 0 {
return cty.MapValEmpty(ety), nil
}
@ -236,12 +227,7 @@ func unmarshalTuple(dec *msgpack.Decoder, etys []cty.Type, path cty.Path) (cty.V
return cty.DynamicVal, path.NewErrorf("a tuple is required")
}
switch {
case length < 0:
return cty.NullVal(cty.Tuple(etys)), nil
case length == 0:
return cty.TupleVal(nil), nil
case length != len(etys):
if length != len(etys) {
return cty.DynamicVal, path.NewErrorf("a tuple of length %d is required", len(etys))
}
@ -270,12 +256,7 @@ func unmarshalObject(dec *msgpack.Decoder, atys map[string]cty.Type, path cty.Pa
return cty.DynamicVal, path.NewErrorf("an object is required")
}
switch {
case length < 0:
return cty.NullVal(cty.Object(atys)), nil
case length == 0:
return cty.ObjectVal(nil), nil
case length != len(atys):
if length != len(atys) {
return cty.DynamicVal, path.NewErrorf("an object with %d attributes is required", len(atys))
}
@ -312,10 +293,7 @@ func unmarshalDynamic(dec *msgpack.Decoder, path cty.Path) (cty.Value, error) {
return cty.DynamicVal, path.NewError(err)
}
switch {
case length == -1:
return cty.NullVal(cty.DynamicPseudoType), nil
case length != 2:
if length != 2 {
return cty.DynamicVal, path.NewErrorf(
"dynamic value array must have exactly two elements",
)

9
vendor/github.com/zclconf/go-cty/cty/value_ops.go generated vendored
View File

@ -14,15 +14,16 @@ func (val Value) GoString() string {
return "cty.NilVal"
}
if val.IsNull() {
return fmt.Sprintf("cty.NullVal(%#v)", val.ty)
}
if val == DynamicVal { // is unknown, so must be before the IsKnown check below
if val.ty == DynamicPseudoType {
return "cty.DynamicVal"
}
if !val.IsKnown() {
return fmt.Sprintf("cty.UnknownVal(%#v)", val.ty)
}
if val.IsNull() {
return fmt.Sprintf("cty.NullVal(%#v)", val.ty)
}
// By the time we reach here we've dealt with all of the exceptions around
// unknowns and nulls, so we're guaranteed that the values are the

9
vendor/go.opencensus.io/.gitignore generated vendored Normal file
View File

@ -0,0 +1,9 @@
/.idea/
# go.opencensus.io/exporter/aws
/exporter/aws/
# Exclude vendor, use dep ensure after checkout:
/vendor/github.com/
/vendor/golang.org/
/vendor/google.golang.org/

27
vendor/go.opencensus.io/.travis.yml generated vendored Normal file
View File

@ -0,0 +1,27 @@
language: go
go:
# 1.8 is tested by AppVeyor
- 1.10.x
go_import_path: go.opencensus.io
# Don't email me the results of the test runs.
notifications:
email: false
before_script:
- GO_FILES=$(find . -iname '*.go' | grep -v /vendor/) # All the .go files, excluding vendor/ if any
- PKGS=$(go list ./... | grep -v /vendor/) # All the import paths, excluding vendor/ if any
- curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh # Install latest dep release
- go get github.com/rakyll/embedmd
script:
- embedmd -d README.md # Ensure embedded code is up-to-date
- dep ensure -v
- go build ./... # Ensure dependency updates don't break build
- if [ -n "$(gofmt -s -l $GO_FILES)" ]; then echo "gofmt the following files:"; gofmt -s -l $GO_FILES; exit 1; fi
- go vet ./...
- go test -v -race $PKGS # Run all the tests with the race detector enabled
- 'if [[ $TRAVIS_GO_VERSION = 1.8* ]]; then ! golint ./... | grep -vE "(_mock|_string|\.pb)\.go:"; fi'
- go run internal/check/version.go

1
vendor/go.opencensus.io/AUTHORS generated vendored Normal file
View File

@ -0,0 +1 @@
Google Inc.

56
vendor/go.opencensus.io/CONTRIBUTING.md generated vendored Normal file
View File

@ -0,0 +1,56 @@
# How to contribute
We'd love to accept your patches and contributions to this project. There are
just a few small guidelines you need to follow.
## Contributor License Agreement
Contributions to this project must be accompanied by a Contributor License
Agreement. You (or your employer) retain the copyright to your contribution,
this simply gives us permission to use and redistribute your contributions as
part of the project. Head over to <https://cla.developers.google.com/> to see
your current agreements on file or to sign a new one.
You generally only need to submit a CLA once, so if you've already submitted one
(even if it was for a different project), you probably don't need to do it
again.
## Code reviews
All submissions, including submissions by project members, require review. We
use GitHub pull requests for this purpose. Consult [GitHub Help] for more
information on using pull requests.
[GitHub Help]: https://help.github.com/articles/about-pull-requests/
## Instructions
Fork the repo, checkout the upstream repo to your GOPATH by:
```
$ go get -d go.opencensus.io
```
Add your fork as an origin:
```
cd $(go env GOPATH)/src/go.opencensus.io
git remote add fork git@github.com:YOUR_GITHUB_USERNAME/opencensus-go.git
```
Run tests:
```
$ go test ./...
```
Checkout a new branch, make modifications and push the branch to your fork:
```
$ git checkout -b feature
# edit files
$ git commit
$ git push fork feature
```
Open a pull request against the main opencensus-go repo.

231
vendor/go.opencensus.io/Gopkg.lock generated vendored Normal file
View File

@ -0,0 +1,231 @@
# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
[[projects]]
branch = "master"
digest = "1:eee9386329f4fcdf8d6c0def0c9771b634bdd5ba460d888aa98c17d59b37a76c"
name = "git.apache.org/thrift.git"
packages = ["lib/go/thrift"]
pruneopts = "UT"
revision = "6e67faa92827ece022380b211c2caaadd6145bf5"
source = "github.com/apache/thrift"
[[projects]]
branch = "master"
digest = "1:d6afaeed1502aa28e80a4ed0981d570ad91b2579193404256ce672ed0a609e0d"
name = "github.com/beorn7/perks"
packages = ["quantile"]
pruneopts = "UT"
revision = "3a771d992973f24aa725d07868b467d1ddfceafb"
[[projects]]
digest = "1:4c0989ca0bcd10799064318923b9bc2db6b4d6338dd75f3f2d86c3511aaaf5cf"
name = "github.com/golang/protobuf"
packages = [
"proto",
"ptypes",
"ptypes/any",
"ptypes/duration",
"ptypes/timestamp",
]
pruneopts = "UT"
revision = "aa810b61a9c79d51363740d207bb46cf8e620ed5"
version = "v1.2.0"
[[projects]]
digest = "1:ff5ebae34cfbf047d505ee150de27e60570e8c394b3b8fdbb720ff6ac71985fc"
name = "github.com/matttproud/golang_protobuf_extensions"
packages = ["pbutil"]
pruneopts = "UT"
revision = "c12348ce28de40eed0136aa2b644d0ee0650e56c"
version = "v1.0.1"
[[projects]]
digest = "1:824c8f3aa4c5f23928fa84ebbd5ed2e9443b3f0cb958a40c1f2fbed5cf5e64b1"
name = "github.com/openzipkin/zipkin-go"
packages = [
".",
"idgenerator",
"model",
"propagation",
"reporter",
"reporter/http",
]
pruneopts = "UT"
revision = "d455a5674050831c1e187644faa4046d653433c2"
version = "v0.1.1"
[[projects]]
digest = "1:d14a5f4bfecf017cb780bdde1b6483e5deb87e12c332544d2c430eda58734bcb"
name = "github.com/prometheus/client_golang"
packages = [
"prometheus",
"prometheus/promhttp",
]
pruneopts = "UT"
revision = "c5b7fccd204277076155f10851dad72b76a49317"
version = "v0.8.0"
[[projects]]
branch = "master"
digest = "1:2d5cd61daa5565187e1d96bae64dbbc6080dacf741448e9629c64fd93203b0d4"
name = "github.com/prometheus/client_model"
packages = ["go"]
pruneopts = "UT"
revision = "5c3871d89910bfb32f5fcab2aa4b9ec68e65a99f"
[[projects]]
branch = "master"
digest = "1:63b68062b8968092eb86bedc4e68894bd096ea6b24920faca8b9dcf451f54bb5"
name = "github.com/prometheus/common"
packages = [
"expfmt",
"internal/bitbucket.org/ww/goautoneg",
"model",
]
pruneopts = "UT"
revision = "c7de2306084e37d54b8be01f3541a8464345e9a5"
[[projects]]
branch = "master"
digest = "1:8c49953a1414305f2ff5465147ee576dd705487c35b15918fcd4efdc0cb7a290"
name = "github.com/prometheus/procfs"
packages = [
".",
"internal/util",
"nfs",
"xfs",
]
pruneopts = "UT"
revision = "05ee40e3a273f7245e8777337fc7b46e533a9a92"
[[projects]]
branch = "master"
digest = "1:deafe4ab271911fec7de5b693d7faae3f38796d9eb8622e2b9e7df42bb3dfea9"
name = "golang.org/x/net"
packages = [
"context",
"http/httpguts",
"http2",
"http2/hpack",
"idna",
"internal/timeseries",
"trace",
]
pruneopts = "UT"
revision = "922f4815f713f213882e8ef45e0d315b164d705c"
[[projects]]
branch = "master"
digest = "1:e0140c0c868c6e0f01c0380865194592c011fe521d6e12d78bfd33e756fe018a"
name = "golang.org/x/sync"
packages = ["semaphore"]
pruneopts = "UT"
revision = "1d60e4601c6fd243af51cc01ddf169918a5407ca"
[[projects]]
branch = "master"
digest = "1:a3f00ac457c955fe86a41e1495e8f4c54cb5399d609374c5cc26aa7d72e542c8"
name = "golang.org/x/sys"
packages = ["unix"]
pruneopts = "UT"
revision = "3b58ed4ad3395d483fc92d5d14123ce2c3581fec"
[[projects]]
digest = "1:a2ab62866c75542dd18d2b069fec854577a20211d7c0ea6ae746072a1dccdd18"
name = "golang.org/x/text"
packages = [
"collate",
"collate/build",
"internal/colltab",
"internal/gen",
"internal/tag",
"internal/triegen",
"internal/ucd",
"language",
"secure/bidirule",
"transform",
"unicode/bidi",
"unicode/cldr",
"unicode/norm",
"unicode/rangetable",
]
pruneopts = "UT"
revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
version = "v0.3.0"
[[projects]]
branch = "master"
digest = "1:c0c17c94fe8bc1ab34e7f586a4a8b788c5e1f4f9f750ff23395b8b2f5a523530"
name = "google.golang.org/api"
packages = ["support/bundler"]
pruneopts = "UT"
revision = "e21acd801f91da814261b938941d193bb036441a"
[[projects]]
branch = "master"
digest = "1:077c1c599507b3b3e9156d17d36e1e61928ee9b53a5b420f10f28ebd4a0b275c"
name = "google.golang.org/genproto"
packages = ["googleapis/rpc/status"]
pruneopts = "UT"
revision = "c66870c02cf823ceb633bcd05be3c7cda29976f4"
[[projects]]
digest = "1:3dd7996ce6bf52dec6a2f69fa43e7c4cefea1d4dfa3c8ab7a5f8a9f7434e239d"
name = "google.golang.org/grpc"
packages = [
".",
"balancer",
"balancer/base",
"balancer/roundrobin",
"codes",
"connectivity",
"credentials",
"encoding",
"encoding/proto",
"grpclog",
"internal",
"internal/backoff",
"internal/channelz",
"internal/envconfig",
"internal/grpcrand",
"internal/transport",
"keepalive",
"metadata",
"naming",
"peer",
"resolver",
"resolver/dns",
"resolver/passthrough",
"stats",
"status",
"tap",
]
pruneopts = "UT"
revision = "32fb0ac620c32ba40a4626ddf94d90d12cce3455"
version = "v1.14.0"
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
input-imports = [
"git.apache.org/thrift.git/lib/go/thrift",
"github.com/golang/protobuf/proto",
"github.com/openzipkin/zipkin-go",
"github.com/openzipkin/zipkin-go/model",
"github.com/openzipkin/zipkin-go/reporter",
"github.com/openzipkin/zipkin-go/reporter/http",
"github.com/prometheus/client_golang/prometheus",
"github.com/prometheus/client_golang/prometheus/promhttp",
"golang.org/x/net/context",
"golang.org/x/net/http2",
"google.golang.org/api/support/bundler",
"google.golang.org/grpc",
"google.golang.org/grpc/codes",
"google.golang.org/grpc/grpclog",
"google.golang.org/grpc/metadata",
"google.golang.org/grpc/stats",
"google.golang.org/grpc/status",
]
solver-name = "gps-cdcl"
solver-version = 1

36
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@ -0,0 +1,36 @@
# For v0.x.y dependencies, prefer adding a constraints of the form: version=">= 0.x.y"
# to avoid locking to a particular minor version which can cause dep to not be
# able to find a satisfying dependency graph.
[[constraint]]
branch = "master"
name = "git.apache.org/thrift.git"
source = "github.com/apache/thrift"
[[constraint]]
name = "github.com/golang/protobuf"
version = "1.0.0"
[[constraint]]
name = "github.com/openzipkin/zipkin-go"
version = ">=0.1.0"
[[constraint]]
name = "github.com/prometheus/client_golang"
version = ">=0.8.0"
[[constraint]]
branch = "master"
name = "golang.org/x/net"
[[constraint]]
branch = "master"
name = "google.golang.org/api"
[[constraint]]
name = "google.golang.org/grpc"
version = "1.11.3"
[prune]
go-tests = true
unused-packages = true

202
vendor/go.opencensus.io/LICENSE generated vendored Normal file
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@ -0,0 +1,202 @@
Apache License
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262
vendor/go.opencensus.io/README.md generated vendored Normal file
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# OpenCensus Libraries for Go
[![Build Status][travis-image]][travis-url]
[![Windows Build Status][appveyor-image]][appveyor-url]
[![GoDoc][godoc-image]][godoc-url]
[![Gitter chat][gitter-image]][gitter-url]
OpenCensus Go is a Go implementation of OpenCensus, a toolkit for
collecting application performance and behavior monitoring data.
Currently it consists of three major components: tags, stats, and tracing.
## Installation
```
$ go get -u go.opencensus.io
```
The API of this project is still evolving, see: [Deprecation Policy](#deprecation-policy).
The use of vendoring or a dependency management tool is recommended.
## Prerequisites
OpenCensus Go libraries require Go 1.8 or later.
## Getting Started
The easiest way to get started using OpenCensus in your application is to use an existing
integration with your RPC framework:
* [net/http](https://godoc.org/go.opencensus.io/plugin/ochttp)
* [gRPC](https://godoc.org/go.opencensus.io/plugin/ocgrpc)
* [database/sql](https://godoc.org/github.com/basvanbeek/ocsql)
* [Go kit](https://godoc.org/github.com/go-kit/kit/tracing/opencensus)
* [Groupcache](https://godoc.org/github.com/orijtech/groupcache)
* [Caddy webserver](https://godoc.org/github.com/orijtech/caddy)
* [MongoDB](https://godoc.org/github.com/orijtech/mongo-go-driver)
* [Redis gomodule/redigo](https://godoc.org/github.com/orijtech/redigo)
* [Redis goredis/redis](https://godoc.org/github.com/orijtech/redis)
* [Memcache](https://godoc.org/github.com/orijtech/gomemcache)
If you're a framework not listed here, you could either implement your own middleware for your
framework or use [custom stats](#stats) and [spans](#spans) directly in your application.
## Exporters
OpenCensus can export instrumentation data to various backends.
OpenCensus has exporter implementations for the following, users
can implement their own exporters by implementing the exporter interfaces
([stats](https://godoc.org/go.opencensus.io/stats/view#Exporter),
[trace](https://godoc.org/go.opencensus.io/trace#Exporter)):
* [Prometheus][exporter-prom] for stats
* [OpenZipkin][exporter-zipkin] for traces
* [Stackdriver][exporter-stackdriver] Monitoring for stats and Trace for traces
* [Jaeger][exporter-jaeger] for traces
* [AWS X-Ray][exporter-xray] for traces
* [Datadog][exporter-datadog] for stats and traces
* [Graphite][exporter-graphite] for stats
## Overview
![OpenCensus Overview](https://i.imgur.com/cf4ElHE.jpg)
In a microservices environment, a user request may go through
multiple services until there is a response. OpenCensus allows
you to instrument your services and collect diagnostics data all
through your services end-to-end.
## Tags
Tags represent propagated key-value pairs. They are propagated using `context.Context`
in the same process or can be encoded to be transmitted on the wire. Usually, this will
be handled by an integration plugin, e.g. `ocgrpc.ServerHandler` and `ocgrpc.ClientHandler`
for gRPC.
Package tag allows adding or modifying tags in the current context.
[embedmd]:# (internal/readme/tags.go new)
```go
ctx, err = tag.New(ctx,
tag.Insert(osKey, "macOS-10.12.5"),
tag.Upsert(userIDKey, "cde36753ed"),
)
if err != nil {
log.Fatal(err)
}
```
## Stats
OpenCensus is a low-overhead framework even if instrumentation is always enabled.
In order to be so, it is optimized to make recording of data points fast
and separate from the data aggregation.
OpenCensus stats collection happens in two stages:
* Definition of measures and recording of data points
* Definition of views and aggregation of the recorded data
### Recording
Measurements are data points associated with a measure.
Recording implicitly tags the set of Measurements with the tags from the
provided context:
[embedmd]:# (internal/readme/stats.go record)
```go
stats.Record(ctx, videoSize.M(102478))
```
### Views
Views are how Measures are aggregated. You can think of them as queries over the
set of recorded data points (measurements).
Views have two parts: the tags to group by and the aggregation type used.
Currently three types of aggregations are supported:
* CountAggregation is used to count the number of times a sample was recorded.
* DistributionAggregation is used to provide a histogram of the values of the samples.
* SumAggregation is used to sum up all sample values.
[embedmd]:# (internal/readme/stats.go aggs)
```go
distAgg := view.Distribution(0, 1<<32, 2<<32, 3<<32)
countAgg := view.Count()
sumAgg := view.Sum()
```
Here we create a view with the DistributionAggregation over our measure.
[embedmd]:# (internal/readme/stats.go view)
```go
if err := view.Register(&view.View{
Name: "example.com/video_size_distribution",
Description: "distribution of processed video size over time",
Measure: videoSize,
Aggregation: view.Distribution(0, 1<<32, 2<<32, 3<<32),
}); err != nil {
log.Fatalf("Failed to register view: %v", err)
}
```
Register begins collecting data for the view. Registered views' data will be
exported via the registered exporters.
## Traces
A distributed trace tracks the progression of a single user request as
it is handled by the services and processes that make up an application.
Each step is called a span in the trace. Spans include metadata about the step,
including especially the time spent in the step, called the span’s latency.
Below you see a trace and several spans underneath it.
![Traces and spans](https://i.imgur.com/7hZwRVj.png)
### Spans
Span is the unit step in a trace. Each span has a name, latency, status and
additional metadata.
Below we are starting a span for a cache read and ending it
when we are done:
[embedmd]:# (internal/readme/trace.go startend)
```go
ctx, span := trace.StartSpan(ctx, "cache.Get")
defer span.End()
// Do work to get from cache.
```
### Propagation
Spans can have parents or can be root spans if they don't have any parents.
The current span is propagated in-process and across the network to allow associating
new child spans with the parent.
In the same process, context.Context is used to propagate spans.
trace.StartSpan creates a new span as a root if the current context
doesn't contain a span. Or, it creates a child of the span that is
already in current context. The returned context can be used to keep
propagating the newly created span in the current context.
[embedmd]:# (internal/readme/trace.go startend)
```go
ctx, span := trace.StartSpan(ctx, "cache.Get")
defer span.End()
// Do work to get from cache.
```
Across the network, OpenCensus provides different propagation
methods for different protocols.
* gRPC integrations uses the OpenCensus' [binary propagation format](https://godoc.org/go.opencensus.io/trace/propagation).
* HTTP integrations uses Zipkin's [B3](https://github.com/openzipkin/b3-propagation)
by default but can be configured to use a custom propagation method by setting another
[propagation.HTTPFormat](https://godoc.org/go.opencensus.io/trace/propagation#HTTPFormat).
## Execution Tracer
With Go 1.11, OpenCensus Go will support integration with the Go execution tracer.
See [Debugging Latency in Go](https://medium.com/observability/debugging-latency-in-go-1-11-9f97a7910d68)
for an example of their mutual use.
## Profiles
OpenCensus tags can be applied as profiler labels
for users who are on Go 1.9 and above.
[embedmd]:# (internal/readme/tags.go profiler)
```go
ctx, err = tag.New(ctx,
tag.Insert(osKey, "macOS-10.12.5"),
tag.Insert(userIDKey, "fff0989878"),
)
if err != nil {
log.Fatal(err)
}
tag.Do(ctx, func(ctx context.Context) {
// Do work.
// When profiling is on, samples will be
// recorded with the key/values from the tag map.
})
```
A screenshot of the CPU profile from the program above:
![CPU profile](https://i.imgur.com/jBKjlkw.png)
## Deprecation Policy
Before version 1.0.0, the following deprecation policy will be observed:
No backwards-incompatible changes will be made except for the removal of symbols that have
been marked as *Deprecated* for at least one minor release (e.g. 0.9.0 to 0.10.0). A release
removing the *Deprecated* functionality will be made no sooner than 28 days after the first
release in which the functionality was marked *Deprecated*.
[travis-image]: https://travis-ci.org/census-instrumentation/opencensus-go.svg?branch=master
[travis-url]: https://travis-ci.org/census-instrumentation/opencensus-go
[appveyor-image]: https://ci.appveyor.com/api/projects/status/vgtt29ps1783ig38?svg=true
[appveyor-url]: https://ci.appveyor.com/project/opencensusgoteam/opencensus-go/branch/master
[godoc-image]: https://godoc.org/go.opencensus.io?status.svg
[godoc-url]: https://godoc.org/go.opencensus.io
[gitter-image]: https://badges.gitter.im/census-instrumentation/lobby.svg
[gitter-url]: https://gitter.im/census-instrumentation/lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
[new-ex]: https://godoc.org/go.opencensus.io/tag#example-NewMap
[new-replace-ex]: https://godoc.org/go.opencensus.io/tag#example-NewMap--Replace
[exporter-prom]: https://godoc.org/go.opencensus.io/exporter/prometheus
[exporter-stackdriver]: https://godoc.org/contrib.go.opencensus.io/exporter/stackdriver
[exporter-zipkin]: https://godoc.org/go.opencensus.io/exporter/zipkin
[exporter-jaeger]: https://godoc.org/go.opencensus.io/exporter/jaeger
[exporter-xray]: https://github.com/census-ecosystem/opencensus-go-exporter-aws
[exporter-datadog]: https://github.com/DataDog/opencensus-go-exporter-datadog
[exporter-graphite]: https://github.com/census-ecosystem/opencensus-go-exporter-graphite

24
vendor/go.opencensus.io/appveyor.yml generated vendored Normal file
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@ -0,0 +1,24 @@
version: "{build}"
platform: x64
clone_folder: c:\gopath\src\go.opencensus.io
environment:
GOPATH: c:\gopath
GOVERSION: 1.8
install:
- set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
- go version
- go env
build: false
deploy: false
test_script:
- cd %APPVEYOR_BUILD_FOLDER%
- gofmt -w .
- go get -v -t .\...
- go test -race -v .\...
- go vet .\...

20
vendor/go.opencensus.io/go.mod generated vendored Normal file
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@ -0,0 +1,20 @@
module go.opencensus.io
require (
git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973
github.com/golang/protobuf v1.2.0
github.com/matttproud/golang_protobuf_extensions v1.0.1
github.com/openzipkin/zipkin-go v0.1.1
github.com/prometheus/client_golang v0.8.0
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910
github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e
github.com/prometheus/procfs v0.0.0-20180725123919-05ee40e3a273
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e
golang.org/x/text v0.3.0
google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf
google.golang.org/genproto v0.0.0-20180831171423-11092d34479b
google.golang.org/grpc v1.14.0
)

21
vendor/go.opencensus.io/go.sum generated vendored Normal file
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@ -0,0 +1,21 @@
git.apache.org/thrift.git v0.0.0-20180807212849-6e67faa92827/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/openzipkin/zipkin-go v0.1.1/go.mod h1:NtoC/o8u3JlF1lSlyPNswIbeQH9bJTmOf0Erfk+hxe8=
github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/common v0.0.0-20180801064454-c7de2306084e/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
github.com/prometheus/procfs v0.0.0-20180725123919-05ee40e3a273/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
golang.org/x/net v0.0.0-20180821023952-922f4815f713/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180821140842-3b58ed4ad339/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
google.golang.org/api v0.0.0-20180818000503-e21acd801f91/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=

37
vendor/go.opencensus.io/internal/internal.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package internal // import "go.opencensus.io/internal"
import (
"fmt"
"time"
"go.opencensus.io"
)
// UserAgent is the user agent to be added to the outgoing
// requests from the exporters.
var UserAgent = fmt.Sprintf("opencensus-go [%s]", opencensus.Version())
// MonotonicEndTime returns the end time at present
// but offset from start, monotonically.
//
// The monotonic clock is used in subtractions hence
// the duration since start added back to start gives
// end as a monotonic time.
// See https://golang.org/pkg/time/#hdr-Monotonic_Clocks
func MonotonicEndTime(start time.Time) time.Time {
return start.Add(time.Now().Sub(start))
}

50
vendor/go.opencensus.io/internal/sanitize.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package internal
import (
"strings"
"unicode"
)
const labelKeySizeLimit = 100
// Sanitize returns a string that is trunacated to 100 characters if it's too
// long, and replaces non-alphanumeric characters to underscores.
func Sanitize(s string) string {
if len(s) == 0 {
return s
}
if len(s) > labelKeySizeLimit {
s = s[:labelKeySizeLimit]
}
s = strings.Map(sanitizeRune, s)
if unicode.IsDigit(rune(s[0])) {
s = "key_" + s
}
if s[0] == '_' {
s = "key" + s
}
return s
}
// converts anything that is not a letter or digit to an underscore
func sanitizeRune(r rune) rune {
if unicode.IsLetter(r) || unicode.IsDigit(r) {
return r
}
// Everything else turns into an underscore
return '_'
}

72
vendor/go.opencensus.io/internal/tagencoding/tagencoding.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Package tagencoding contains the tag encoding
// used interally by the stats collector.
package tagencoding // import "go.opencensus.io/internal/tagencoding"
type Values struct {
Buffer []byte
WriteIndex int
ReadIndex int
}
func (vb *Values) growIfRequired(expected int) {
if len(vb.Buffer)-vb.WriteIndex < expected {
tmp := make([]byte, 2*(len(vb.Buffer)+1)+expected)
copy(tmp, vb.Buffer)
vb.Buffer = tmp
}
}
func (vb *Values) WriteValue(v []byte) {
length := len(v) & 0xff
vb.growIfRequired(1 + length)
// writing length of v
vb.Buffer[vb.WriteIndex] = byte(length)
vb.WriteIndex++
if length == 0 {
// No value was encoded for this key
return
}
// writing v
copy(vb.Buffer[vb.WriteIndex:], v[:length])
vb.WriteIndex += length
}
// ReadValue is the helper method to read the values when decoding valuesBytes to a map[Key][]byte.
func (vb *Values) ReadValue() []byte {
// read length of v
length := int(vb.Buffer[vb.ReadIndex])
vb.ReadIndex++
if length == 0 {
// No value was encoded for this key
return nil
}
// read value of v
v := make([]byte, length)
endIdx := vb.ReadIndex + length
copy(v, vb.Buffer[vb.ReadIndex:endIdx])
vb.ReadIndex = endIdx
return v
}
func (vb *Values) Bytes() []byte {
return vb.Buffer[:vb.WriteIndex]
}

52
vendor/go.opencensus.io/internal/traceinternals.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package internal
import (
"time"
)
// Trace allows internal access to some trace functionality.
// TODO(#412): remove this
var Trace interface{}
var LocalSpanStoreEnabled bool
// BucketConfiguration stores the number of samples to store for span buckets
// for successful and failed spans for a particular span name.
type BucketConfiguration struct {
Name string
MaxRequestsSucceeded int
MaxRequestsErrors int
}
// PerMethodSummary is a summary of the spans stored for a single span name.
type PerMethodSummary struct {
Active int
LatencyBuckets []LatencyBucketSummary
ErrorBuckets []ErrorBucketSummary
}
// LatencyBucketSummary is a summary of a latency bucket.
type LatencyBucketSummary struct {
MinLatency, MaxLatency time.Duration
Size int
}
// ErrorBucketSummary is a summary of an error bucket.
type ErrorBucketSummary struct {
ErrorCode int32
Size int
}

21
vendor/go.opencensus.io/opencensus.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package opencensus contains Go support for OpenCensus.
package opencensus // import "go.opencensus.io"
// Version is the current release version of OpenCensus in use.
func Version() string {
return "0.17.0"
}

107
vendor/go.opencensus.io/plugin/ochttp/client.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"net/http"
"net/http/httptrace"
"go.opencensus.io/trace"
"go.opencensus.io/trace/propagation"
)
// Transport is an http.RoundTripper that instruments all outgoing requests with
// OpenCensus stats and tracing.
//
// The zero value is intended to be a useful default, but for
// now it's recommended that you explicitly set Propagation, since the default
// for this may change.
type Transport struct {
// Base may be set to wrap another http.RoundTripper that does the actual
// requests. By default http.DefaultTransport is used.
//
// If base HTTP roundtripper implements CancelRequest,
// the returned round tripper will be cancelable.
Base http.RoundTripper
// Propagation defines how traces are propagated. If unspecified, a default
// (currently B3 format) will be used.
Propagation propagation.HTTPFormat
// StartOptions are applied to the span started by this Transport around each
// request.
//
// StartOptions.SpanKind will always be set to trace.SpanKindClient
// for spans started by this transport.
StartOptions trace.StartOptions
// NameFromRequest holds the function to use for generating the span name
// from the information found in the outgoing HTTP Request. By default the
// name equals the URL Path.
FormatSpanName func(*http.Request) string
// NewClientTrace may be set to a function allowing the current *trace.Span
// to be annotated with HTTP request event information emitted by the
// httptrace package.
NewClientTrace func(*http.Request, *trace.Span) *httptrace.ClientTrace
// TODO: Implement tag propagation for HTTP.
}
// RoundTrip implements http.RoundTripper, delegating to Base and recording stats and traces for the request.
func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
rt := t.base()
if isHealthEndpoint(req.URL.Path) {
return rt.RoundTrip(req)
}
// TODO: remove excessive nesting of http.RoundTrippers here.
format := t.Propagation
if format == nil {
format = defaultFormat
}
spanNameFormatter := t.FormatSpanName
if spanNameFormatter == nil {
spanNameFormatter = spanNameFromURL
}
rt = &traceTransport{
base: rt,
format: format,
startOptions: trace.StartOptions{
Sampler: t.StartOptions.Sampler,
SpanKind: trace.SpanKindClient,
},
formatSpanName: spanNameFormatter,
newClientTrace: t.NewClientTrace,
}
rt = statsTransport{base: rt}
return rt.RoundTrip(req)
}
func (t *Transport) base() http.RoundTripper {
if t.Base != nil {
return t.Base
}
return http.DefaultTransport
}
// CancelRequest cancels an in-flight request by closing its connection.
func (t *Transport) CancelRequest(req *http.Request) {
type canceler interface {
CancelRequest(*http.Request)
}
if cr, ok := t.base().(canceler); ok {
cr.CancelRequest(req)
}
}

125
vendor/go.opencensus.io/plugin/ochttp/client_stats.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"context"
"io"
"net/http"
"strconv"
"sync"
"time"
"go.opencensus.io/stats"
"go.opencensus.io/tag"
)
// statsTransport is an http.RoundTripper that collects stats for the outgoing requests.
type statsTransport struct {
base http.RoundTripper
}
// RoundTrip implements http.RoundTripper, delegating to Base and recording stats for the request.
func (t statsTransport) RoundTrip(req *http.Request) (*http.Response, error) {
ctx, _ := tag.New(req.Context(),
tag.Upsert(Host, req.URL.Host),
tag.Upsert(Path, req.URL.Path),
tag.Upsert(Method, req.Method))
req = req.WithContext(ctx)
track := &tracker{
start: time.Now(),
ctx: ctx,
}
if req.Body == nil {
// TODO: Handle cases where ContentLength is not set.
track.reqSize = -1
} else if req.ContentLength > 0 {
track.reqSize = req.ContentLength
}
stats.Record(ctx, ClientRequestCount.M(1))
// Perform request.
resp, err := t.base.RoundTrip(req)
if err != nil {
track.statusCode = http.StatusInternalServerError
track.end()
} else {
track.statusCode = resp.StatusCode
if resp.Body == nil {
track.end()
} else {
track.body = resp.Body
resp.Body = track
}
}
return resp, err
}
// CancelRequest cancels an in-flight request by closing its connection.
func (t statsTransport) CancelRequest(req *http.Request) {
type canceler interface {
CancelRequest(*http.Request)
}
if cr, ok := t.base.(canceler); ok {
cr.CancelRequest(req)
}
}
type tracker struct {
ctx context.Context
respSize int64
reqSize int64
start time.Time
body io.ReadCloser
statusCode int
endOnce sync.Once
}
var _ io.ReadCloser = (*tracker)(nil)
func (t *tracker) end() {
t.endOnce.Do(func() {
m := []stats.Measurement{
ClientLatency.M(float64(time.Since(t.start)) / float64(time.Millisecond)),
ClientResponseBytes.M(t.respSize),
}
if t.reqSize >= 0 {
m = append(m, ClientRequestBytes.M(t.reqSize))
}
ctx, _ := tag.New(t.ctx, tag.Upsert(StatusCode, strconv.Itoa(t.statusCode)))
stats.Record(ctx, m...)
})
}
func (t *tracker) Read(b []byte) (int, error) {
n, err := t.body.Read(b)
switch err {
case nil:
t.respSize += int64(n)
return n, nil
case io.EOF:
t.end()
}
return n, err
}
func (t *tracker) Close() error {
// Invoking endSpan on Close will help catch the cases
// in which a read returned a non-nil error, we set the
// span status but didn't end the span.
t.end()
return t.body.Close()
}

19
vendor/go.opencensus.io/plugin/ochttp/doc.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package ochttp provides OpenCensus instrumentation for net/http package.
//
// For server instrumentation, see Handler. For client-side instrumentation,
// see Transport.
package ochttp // import "go.opencensus.io/plugin/ochttp"

123
vendor/go.opencensus.io/plugin/ochttp/propagation/b3/b3.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package b3 contains a propagation.HTTPFormat implementation
// for B3 propagation. See https://github.com/openzipkin/b3-propagation
// for more details.
package b3 // import "go.opencensus.io/plugin/ochttp/propagation/b3"
import (
"encoding/hex"
"net/http"
"go.opencensus.io/trace"
"go.opencensus.io/trace/propagation"
)
// B3 headers that OpenCensus understands.
const (
TraceIDHeader = "X-B3-TraceId"
SpanIDHeader = "X-B3-SpanId"
SampledHeader = "X-B3-Sampled"
)
// HTTPFormat implements propagation.HTTPFormat to propagate
// traces in HTTP headers in B3 propagation format.
// HTTPFormat skips the X-B3-ParentId and X-B3-Flags headers
// because there are additional fields not represented in the
// OpenCensus span context. Spans created from the incoming
// header will be the direct children of the client-side span.
// Similarly, reciever of the outgoing spans should use client-side
// span created by OpenCensus as the parent.
type HTTPFormat struct{}
var _ propagation.HTTPFormat = (*HTTPFormat)(nil)
// SpanContextFromRequest extracts a B3 span context from incoming requests.
func (f *HTTPFormat) SpanContextFromRequest(req *http.Request) (sc trace.SpanContext, ok bool) {
tid, ok := ParseTraceID(req.Header.Get(TraceIDHeader))
if !ok {
return trace.SpanContext{}, false
}
sid, ok := ParseSpanID(req.Header.Get(SpanIDHeader))
if !ok {
return trace.SpanContext{}, false
}
sampled, _ := ParseSampled(req.Header.Get(SampledHeader))
return trace.SpanContext{
TraceID: tid,
SpanID: sid,
TraceOptions: sampled,
}, true
}
// ParseTraceID parses the value of the X-B3-TraceId header.
func ParseTraceID(tid string) (trace.TraceID, bool) {
if tid == "" {
return trace.TraceID{}, false
}
b, err := hex.DecodeString(tid)
if err != nil {
return trace.TraceID{}, false
}
var traceID trace.TraceID
if len(b) <= 8 {
// The lower 64-bits.
start := 8 + (8 - len(b))
copy(traceID[start:], b)
} else {
start := 16 - len(b)
copy(traceID[start:], b)
}
return traceID, true
}
// ParseSpanID parses the value of the X-B3-SpanId or X-B3-ParentSpanId headers.
func ParseSpanID(sid string) (spanID trace.SpanID, ok bool) {
if sid == "" {
return trace.SpanID{}, false
}
b, err := hex.DecodeString(sid)
if err != nil {
return trace.SpanID{}, false
}
start := 8 - len(b)
copy(spanID[start:], b)
return spanID, true
}
// ParseSampled parses the value of the X-B3-Sampled header.
func ParseSampled(sampled string) (trace.TraceOptions, bool) {
switch sampled {
case "true", "1":
return trace.TraceOptions(1), true
default:
return trace.TraceOptions(0), false
}
}
// SpanContextToRequest modifies the given request to include B3 headers.
func (f *HTTPFormat) SpanContextToRequest(sc trace.SpanContext, req *http.Request) {
req.Header.Set(TraceIDHeader, hex.EncodeToString(sc.TraceID[:]))
req.Header.Set(SpanIDHeader, hex.EncodeToString(sc.SpanID[:]))
var sampled string
if sc.IsSampled() {
sampled = "1"
} else {
sampled = "0"
}
req.Header.Set(SampledHeader, sampled)
}

51
vendor/go.opencensus.io/plugin/ochttp/route.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"net/http"
"go.opencensus.io/tag"
)
// WithRouteTag returns an http.Handler that records stats with the
// http_server_route tag set to the given value.
func WithRouteTag(handler http.Handler, route string) http.Handler {
return taggedHandlerFunc(func(w http.ResponseWriter, r *http.Request) []tag.Mutator {
addRoute := []tag.Mutator{tag.Upsert(KeyServerRoute, route)}
ctx, _ := tag.New(r.Context(), addRoute...)
r = r.WithContext(ctx)
handler.ServeHTTP(w, r)
return addRoute
})
}
// taggedHandlerFunc is a http.Handler that returns tags describing the
// processing of the request. These tags will be recorded along with the
// measures in this package at the end of the request.
type taggedHandlerFunc func(w http.ResponseWriter, r *http.Request) []tag.Mutator
func (h taggedHandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request) {
tags := h(w, r)
if a, ok := r.Context().Value(addedTagsKey{}).(*addedTags); ok {
a.t = append(a.t, tags...)
}
}
type addedTagsKey struct{}
type addedTags struct {
t []tag.Mutator
}

430
vendor/go.opencensus.io/plugin/ochttp/server.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"context"
"io"
"net/http"
"strconv"
"sync"
"time"
"go.opencensus.io/stats"
"go.opencensus.io/tag"
"go.opencensus.io/trace"
"go.opencensus.io/trace/propagation"
)
// Handler is an http.Handler wrapper to instrument your HTTP server with
// OpenCensus. It supports both stats and tracing.
//
// Tracing
//
// This handler is aware of the incoming request's span, reading it from request
// headers as configured using the Propagation field.
// The extracted span can be accessed from the incoming request's
// context.
//
// span := trace.FromContext(r.Context())
//
// The server span will be automatically ended at the end of ServeHTTP.
type Handler struct {
// Propagation defines how traces are propagated. If unspecified,
// B3 propagation will be used.
Propagation propagation.HTTPFormat
// Handler is the handler used to handle the incoming request.
Handler http.Handler
// StartOptions are applied to the span started by this Handler around each
// request.
//
// StartOptions.SpanKind will always be set to trace.SpanKindServer
// for spans started by this transport.
StartOptions trace.StartOptions
// IsPublicEndpoint should be set to true for publicly accessible HTTP(S)
// servers. If true, any trace metadata set on the incoming request will
// be added as a linked trace instead of being added as a parent of the
// current trace.
IsPublicEndpoint bool
// FormatSpanName holds the function to use for generating the span name
// from the information found in the incoming HTTP Request. By default the
// name equals the URL Path.
FormatSpanName func(*http.Request) string
}
func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
var tags addedTags
r, traceEnd := h.startTrace(w, r)
defer traceEnd()
w, statsEnd := h.startStats(w, r)
defer statsEnd(&tags)
handler := h.Handler
if handler == nil {
handler = http.DefaultServeMux
}
r = r.WithContext(context.WithValue(r.Context(), addedTagsKey{}, &tags))
handler.ServeHTTP(w, r)
}
func (h *Handler) startTrace(w http.ResponseWriter, r *http.Request) (*http.Request, func()) {
if isHealthEndpoint(r.URL.Path) {
return r, func() {}
}
var name string
if h.FormatSpanName == nil {
name = spanNameFromURL(r)
} else {
name = h.FormatSpanName(r)
}
ctx := r.Context()
var span *trace.Span
sc, ok := h.extractSpanContext(r)
if ok && !h.IsPublicEndpoint {
ctx, span = trace.StartSpanWithRemoteParent(ctx, name, sc,
trace.WithSampler(h.StartOptions.Sampler),
trace.WithSpanKind(trace.SpanKindServer))
} else {
ctx, span = trace.StartSpan(ctx, name,
trace.WithSampler(h.StartOptions.Sampler),
trace.WithSpanKind(trace.SpanKindServer),
)
if ok {
span.AddLink(trace.Link{
TraceID: sc.TraceID,
SpanID: sc.SpanID,
Type: trace.LinkTypeChild,
Attributes: nil,
})
}
}
span.AddAttributes(requestAttrs(r)...)
return r.WithContext(ctx), span.End
}
func (h *Handler) extractSpanContext(r *http.Request) (trace.SpanContext, bool) {
if h.Propagation == nil {
return defaultFormat.SpanContextFromRequest(r)
}
return h.Propagation.SpanContextFromRequest(r)
}
func (h *Handler) startStats(w http.ResponseWriter, r *http.Request) (http.ResponseWriter, func(tags *addedTags)) {
ctx, _ := tag.New(r.Context(),
tag.Upsert(Host, r.URL.Host),
tag.Upsert(Path, r.URL.Path),
tag.Upsert(Method, r.Method))
track := &trackingResponseWriter{
start: time.Now(),
ctx: ctx,
writer: w,
}
if r.Body == nil {
// TODO: Handle cases where ContentLength is not set.
track.reqSize = -1
} else if r.ContentLength > 0 {
track.reqSize = r.ContentLength
}
stats.Record(ctx, ServerRequestCount.M(1))
return track.wrappedResponseWriter(), track.end
}
type trackingResponseWriter struct {
ctx context.Context
reqSize int64
respSize int64
start time.Time
statusCode int
statusLine string
endOnce sync.Once
writer http.ResponseWriter
}
// Compile time assertion for ResponseWriter interface
var _ http.ResponseWriter = (*trackingResponseWriter)(nil)
var logTagsErrorOnce sync.Once
func (t *trackingResponseWriter) end(tags *addedTags) {
t.endOnce.Do(func() {
if t.statusCode == 0 {
t.statusCode = 200
}
span := trace.FromContext(t.ctx)
span.SetStatus(TraceStatus(t.statusCode, t.statusLine))
m := []stats.Measurement{
ServerLatency.M(float64(time.Since(t.start)) / float64(time.Millisecond)),
ServerResponseBytes.M(t.respSize),
}
if t.reqSize >= 0 {
m = append(m, ServerRequestBytes.M(t.reqSize))
}
allTags := make([]tag.Mutator, len(tags.t)+1)
allTags[0] = tag.Upsert(StatusCode, strconv.Itoa(t.statusCode))
copy(allTags[1:], tags.t)
ctx, _ := tag.New(t.ctx, allTags...)
stats.Record(ctx, m...)
})
}
func (t *trackingResponseWriter) Header() http.Header {
return t.writer.Header()
}
func (t *trackingResponseWriter) Write(data []byte) (int, error) {
n, err := t.writer.Write(data)
t.respSize += int64(n)
return n, err
}
func (t *trackingResponseWriter) WriteHeader(statusCode int) {
t.writer.WriteHeader(statusCode)
t.statusCode = statusCode
t.statusLine = http.StatusText(t.statusCode)
}
// wrappedResponseWriter returns a wrapped version of the original
// ResponseWriter and only implements the same combination of additional
// interfaces as the original.
// This implementation is based on https://github.com/felixge/httpsnoop.
func (t *trackingResponseWriter) wrappedResponseWriter() http.ResponseWriter {
var (
hj, i0 = t.writer.(http.Hijacker)
cn, i1 = t.writer.(http.CloseNotifier)
pu, i2 = t.writer.(http.Pusher)
fl, i3 = t.writer.(http.Flusher)
rf, i4 = t.writer.(io.ReaderFrom)
)
switch {
case !i0 && !i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
}{t}
case !i0 && !i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
io.ReaderFrom
}{t, rf}
case !i0 && !i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.Flusher
}{t, fl}
case !i0 && !i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
http.Flusher
io.ReaderFrom
}{t, fl, rf}
case !i0 && !i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
http.Pusher
}{t, pu}
case !i0 && !i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
http.Pusher
io.ReaderFrom
}{t, pu, rf}
case !i0 && !i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.Pusher
http.Flusher
}{t, pu, fl}
case !i0 && !i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
http.Pusher
http.Flusher
io.ReaderFrom
}{t, pu, fl, rf}
case !i0 && i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
http.CloseNotifier
}{t, cn}
case !i0 && i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
http.CloseNotifier
io.ReaderFrom
}{t, cn, rf}
case !i0 && i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.CloseNotifier
http.Flusher
}{t, cn, fl}
case !i0 && i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
http.CloseNotifier
http.Flusher
io.ReaderFrom
}{t, cn, fl, rf}
case !i0 && i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
http.CloseNotifier
http.Pusher
}{t, cn, pu}
case !i0 && i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
http.CloseNotifier
http.Pusher
io.ReaderFrom
}{t, cn, pu, rf}
case !i0 && i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.CloseNotifier
http.Pusher
http.Flusher
}{t, cn, pu, fl}
case !i0 && i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
http.CloseNotifier
http.Pusher
http.Flusher
io.ReaderFrom
}{t, cn, pu, fl, rf}
case i0 && !i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
}{t, hj}
case i0 && !i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
io.ReaderFrom
}{t, hj, rf}
case i0 && !i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
http.Flusher
}{t, hj, fl}
case i0 && !i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
http.Flusher
io.ReaderFrom
}{t, hj, fl, rf}
case i0 && !i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
http.Pusher
}{t, hj, pu}
case i0 && !i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
http.Pusher
io.ReaderFrom
}{t, hj, pu, rf}
case i0 && !i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
http.Pusher
http.Flusher
}{t, hj, pu, fl}
case i0 && !i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
http.Pusher
http.Flusher
io.ReaderFrom
}{t, hj, pu, fl, rf}
case i0 && i1 && !i2 && !i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
}{t, hj, cn}
case i0 && i1 && !i2 && !i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
io.ReaderFrom
}{t, hj, cn, rf}
case i0 && i1 && !i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
http.Flusher
}{t, hj, cn, fl}
case i0 && i1 && !i2 && i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
http.Flusher
io.ReaderFrom
}{t, hj, cn, fl, rf}
case i0 && i1 && i2 && !i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
http.Pusher
}{t, hj, cn, pu}
case i0 && i1 && i2 && !i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
http.Pusher
io.ReaderFrom
}{t, hj, cn, pu, rf}
case i0 && i1 && i2 && i3 && !i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
http.Pusher
http.Flusher
}{t, hj, cn, pu, fl}
case i0 && i1 && i2 && i3 && i4:
return struct {
http.ResponseWriter
http.Hijacker
http.CloseNotifier
http.Pusher
http.Flusher
io.ReaderFrom
}{t, hj, cn, pu, fl, rf}
default:
return struct {
http.ResponseWriter
}{t}
}
}

167
vendor/go.opencensus.io/plugin/ochttp/span_annotating_client_trace.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"crypto/tls"
"net/http"
"net/http/httptrace"
"strings"
"go.opencensus.io/trace"
)
type spanAnnotator struct {
sp *trace.Span
}
// TODO: Remove NewSpanAnnotator at the next release.
// Deprecated: Use NewSpanAnnotatingClientTrace instead
func NewSpanAnnotator(r *http.Request, s *trace.Span) *httptrace.ClientTrace {
return NewSpanAnnotatingClientTrace(r, s)
}
// NewSpanAnnotatingClientTrace returns a httptrace.ClientTrace which annotates
// all emitted httptrace events on the provided Span.
func NewSpanAnnotatingClientTrace(_ *http.Request, s *trace.Span) *httptrace.ClientTrace {
sa := spanAnnotator{sp: s}
return &httptrace.ClientTrace{
GetConn: sa.getConn,
GotConn: sa.gotConn,
PutIdleConn: sa.putIdleConn,
GotFirstResponseByte: sa.gotFirstResponseByte,
Got100Continue: sa.got100Continue,
DNSStart: sa.dnsStart,
DNSDone: sa.dnsDone,
ConnectStart: sa.connectStart,
ConnectDone: sa.connectDone,
TLSHandshakeStart: sa.tlsHandshakeStart,
TLSHandshakeDone: sa.tlsHandshakeDone,
WroteHeaders: sa.wroteHeaders,
Wait100Continue: sa.wait100Continue,
WroteRequest: sa.wroteRequest,
}
}
func (s spanAnnotator) getConn(hostPort string) {
attrs := []trace.Attribute{
trace.StringAttribute("httptrace.get_connection.host_port", hostPort),
}
s.sp.Annotate(attrs, "GetConn")
}
func (s spanAnnotator) gotConn(info httptrace.GotConnInfo) {
attrs := []trace.Attribute{
trace.BoolAttribute("httptrace.got_connection.reused", info.Reused),
trace.BoolAttribute("httptrace.got_connection.was_idle", info.WasIdle),
}
if info.WasIdle {
attrs = append(attrs,
trace.StringAttribute("httptrace.got_connection.idle_time", info.IdleTime.String()))
}
s.sp.Annotate(attrs, "GotConn")
}
// PutIdleConn implements a httptrace.ClientTrace hook
func (s spanAnnotator) putIdleConn(err error) {
var attrs []trace.Attribute
if err != nil {
attrs = append(attrs,
trace.StringAttribute("httptrace.put_idle_connection.error", err.Error()))
}
s.sp.Annotate(attrs, "PutIdleConn")
}
func (s spanAnnotator) gotFirstResponseByte() {
s.sp.Annotate(nil, "GotFirstResponseByte")
}
func (s spanAnnotator) got100Continue() {
s.sp.Annotate(nil, "Got100Continue")
}
func (s spanAnnotator) dnsStart(info httptrace.DNSStartInfo) {
attrs := []trace.Attribute{
trace.StringAttribute("httptrace.dns_start.host", info.Host),
}
s.sp.Annotate(attrs, "DNSStart")
}
func (s spanAnnotator) dnsDone(info httptrace.DNSDoneInfo) {
var addrs []string
for _, addr := range info.Addrs {
addrs = append(addrs, addr.String())
}
attrs := []trace.Attribute{
trace.StringAttribute("httptrace.dns_done.addrs", strings.Join(addrs, " , ")),
}
if info.Err != nil {
attrs = append(attrs,
trace.StringAttribute("httptrace.dns_done.error", info.Err.Error()))
}
s.sp.Annotate(attrs, "DNSDone")
}
func (s spanAnnotator) connectStart(network, addr string) {
attrs := []trace.Attribute{
trace.StringAttribute("httptrace.connect_start.network", network),
trace.StringAttribute("httptrace.connect_start.addr", addr),
}
s.sp.Annotate(attrs, "ConnectStart")
}
func (s spanAnnotator) connectDone(network, addr string, err error) {
attrs := []trace.Attribute{
trace.StringAttribute("httptrace.connect_done.network", network),
trace.StringAttribute("httptrace.connect_done.addr", addr),
}
if err != nil {
attrs = append(attrs,
trace.StringAttribute("httptrace.connect_done.error", err.Error()))
}
s.sp.Annotate(attrs, "ConnectDone")
}
func (s spanAnnotator) tlsHandshakeStart() {
s.sp.Annotate(nil, "TLSHandshakeStart")
}
func (s spanAnnotator) tlsHandshakeDone(_ tls.ConnectionState, err error) {
var attrs []trace.Attribute
if err != nil {
attrs = append(attrs,
trace.StringAttribute("httptrace.tls_handshake_done.error", err.Error()))
}
s.sp.Annotate(attrs, "TLSHandshakeDone")
}
func (s spanAnnotator) wroteHeaders() {
s.sp.Annotate(nil, "WroteHeaders")
}
func (s spanAnnotator) wait100Continue() {
s.sp.Annotate(nil, "Wait100Continue")
}
func (s spanAnnotator) wroteRequest(info httptrace.WroteRequestInfo) {
var attrs []trace.Attribute
if info.Err != nil {
attrs = append(attrs,
trace.StringAttribute("httptrace.wrote_request.error", info.Err.Error()))
}
s.sp.Annotate(attrs, "WroteRequest")
}

186
vendor/go.opencensus.io/plugin/ochttp/stats.go generated vendored Normal file
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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"go.opencensus.io/stats"
"go.opencensus.io/stats/view"
"go.opencensus.io/tag"
)
// The following client HTTP measures are supported for use in custom views.
var (
ClientRequestCount = stats.Int64("opencensus.io/http/client/request_count", "Number of HTTP requests started", stats.UnitDimensionless)
ClientRequestBytes = stats.Int64("opencensus.io/http/client/request_bytes", "HTTP request body size if set as ContentLength (uncompressed)", stats.UnitBytes)
ClientResponseBytes = stats.Int64("opencensus.io/http/client/response_bytes", "HTTP response body size (uncompressed)", stats.UnitBytes)
ClientLatency = stats.Float64("opencensus.io/http/client/latency", "End-to-end latency", stats.UnitMilliseconds)
)
// The following server HTTP measures are supported for use in custom views:
var (
ServerRequestCount = stats.Int64("opencensus.io/http/server/request_count", "Number of HTTP requests started", stats.UnitDimensionless)
ServerRequestBytes = stats.Int64("opencensus.io/http/server/request_bytes", "HTTP request body size if set as ContentLength (uncompressed)", stats.UnitBytes)
ServerResponseBytes = stats.Int64("opencensus.io/http/server/response_bytes", "HTTP response body size (uncompressed)", stats.UnitBytes)
ServerLatency = stats.Float64("opencensus.io/http/server/latency", "End-to-end latency", stats.UnitMilliseconds)
)
// The following tags are applied to stats recorded by this package. Host, Path
// and Method are applied to all measures. StatusCode is not applied to
// ClientRequestCount or ServerRequestCount, since it is recorded before the status is known.
var (
// Host is the value of the HTTP Host header.
//
// The value of this tag can be controlled by the HTTP client, so you need
// to watch out for potentially generating high-cardinality labels in your
// metrics backend if you use this tag in views.
Host, _ = tag.NewKey("http.host")
// StatusCode is the numeric HTTP response status code,
// or "error" if a transport error occurred and no status code was read.
StatusCode, _ = tag.NewKey("http.status")
// Path is the URL path (not including query string) in the request.
//
// The value of this tag can be controlled by the HTTP client, so you need
// to watch out for potentially generating high-cardinality labels in your
// metrics backend if you use this tag in views.
Path, _ = tag.NewKey("http.path")
// Method is the HTTP method of the request, capitalized (GET, POST, etc.).
Method, _ = tag.NewKey("http.method")
// KeyServerRoute is a low cardinality string representing the logical
// handler of the request. This is usually the pattern registered on the a
// ServeMux (or similar string).
KeyServerRoute, _ = tag.NewKey("http_server_route")
)
// Default distributions used by views in this package.
var (
DefaultSizeDistribution = view.Distribution(0, 1024, 2048, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216, 67108864, 268435456, 1073741824, 4294967296)
DefaultLatencyDistribution = view.Distribution(0, 1, 2, 3, 4, 5, 6, 8, 10, 13, 16, 20, 25, 30, 40, 50, 65, 80, 100, 130, 160, 200, 250, 300, 400, 500, 650, 800, 1000, 2000, 5000, 10000, 20000, 50000, 100000)
)
// Package ochttp provides some convenience views.
// You need to register the views for data to actually be collected.
var (
ClientRequestCountView = &view.View{
Name: "opencensus.io/http/client/request_count",
Description: "Count of HTTP requests started",
Measure: ClientRequestCount,
Aggregation: view.Count(),
}
ClientRequestBytesView = &view.View{
Name: "opencensus.io/http/client/request_bytes",
Description: "Size distribution of HTTP request body",
Measure: ClientRequestBytes,
Aggregation: DefaultSizeDistribution,
}
ClientResponseBytesView = &view.View{
Name: "opencensus.io/http/client/response_bytes",
Description: "Size distribution of HTTP response body",
Measure: ClientResponseBytes,
Aggregation: DefaultSizeDistribution,
}
ClientLatencyView = &view.View{
Name: "opencensus.io/http/client/latency",
Description: "Latency distribution of HTTP requests",
Measure: ClientLatency,
Aggregation: DefaultLatencyDistribution,
}
ClientRequestCountByMethod = &view.View{
Name: "opencensus.io/http/client/request_count_by_method",
Description: "Client request count by HTTP method",
TagKeys: []tag.Key{Method},
Measure: ClientRequestCount,
Aggregation: view.Count(),
}
ClientResponseCountByStatusCode = &view.View{
Name: "opencensus.io/http/client/response_count_by_status_code",
Description: "Client response count by status code",
TagKeys: []tag.Key{StatusCode},
Measure: ClientLatency,
Aggregation: view.Count(),
}
ServerRequestCountView = &view.View{
Name: "opencensus.io/http/server/request_count",
Description: "Count of HTTP requests started",
Measure: ServerRequestCount,
Aggregation: view.Count(),
}
ServerRequestBytesView = &view.View{
Name: "opencensus.io/http/server/request_bytes",
Description: "Size distribution of HTTP request body",
Measure: ServerRequestBytes,
Aggregation: DefaultSizeDistribution,
}
ServerResponseBytesView = &view.View{
Name: "opencensus.io/http/server/response_bytes",
Description: "Size distribution of HTTP response body",
Measure: ServerResponseBytes,
Aggregation: DefaultSizeDistribution,
}
ServerLatencyView = &view.View{
Name: "opencensus.io/http/server/latency",
Description: "Latency distribution of HTTP requests",
Measure: ServerLatency,
Aggregation: DefaultLatencyDistribution,
}
ServerRequestCountByMethod = &view.View{
Name: "opencensus.io/http/server/request_count_by_method",
Description: "Server request count by HTTP method",
TagKeys: []tag.Key{Method},
Measure: ServerRequestCount,
Aggregation: view.Count(),
}
ServerResponseCountByStatusCode = &view.View{
Name: "opencensus.io/http/server/response_count_by_status_code",
Description: "Server response count by status code",
TagKeys: []tag.Key{StatusCode},
Measure: ServerLatency,
Aggregation: view.Count(),
}
)
// DefaultClientViews are the default client views provided by this package.
var DefaultClientViews = []*view.View{
ClientRequestCountView,
ClientRequestBytesView,
ClientResponseBytesView,
ClientLatencyView,
ClientRequestCountByMethod,
ClientResponseCountByStatusCode,
}
// DefaultServerViews are the default server views provided by this package.
var DefaultServerViews = []*view.View{
ServerRequestCountView,
ServerRequestBytesView,
ServerResponseBytesView,
ServerLatencyView,
ServerRequestCountByMethod,
ServerResponseCountByStatusCode,
}

228
vendor/go.opencensus.io/plugin/ochttp/trace.go generated vendored Normal file
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@ -0,0 +1,228 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"io"
"net/http"
"net/http/httptrace"
"go.opencensus.io/plugin/ochttp/propagation/b3"
"go.opencensus.io/trace"
"go.opencensus.io/trace/propagation"
)
// TODO(jbd): Add godoc examples.
var defaultFormat propagation.HTTPFormat = &b3.HTTPFormat{}
// Attributes recorded on the span for the requests.
// Only trace exporters will need them.
const (
HostAttribute = "http.host"
MethodAttribute = "http.method"
PathAttribute = "http.path"
UserAgentAttribute = "http.user_agent"
StatusCodeAttribute = "http.status_code"
)
type traceTransport struct {
base http.RoundTripper
startOptions trace.StartOptions
format propagation.HTTPFormat
formatSpanName func(*http.Request) string
newClientTrace func(*http.Request, *trace.Span) *httptrace.ClientTrace
}
// TODO(jbd): Add message events for request and response size.
// RoundTrip creates a trace.Span and inserts it into the outgoing request's headers.
// The created span can follow a parent span, if a parent is presented in
// the request's context.
func (t *traceTransport) RoundTrip(req *http.Request) (*http.Response, error) {
name := t.formatSpanName(req)
// TODO(jbd): Discuss whether we want to prefix
// outgoing requests with Sent.
ctx, span := trace.StartSpan(req.Context(), name,
trace.WithSampler(t.startOptions.Sampler),
trace.WithSpanKind(trace.SpanKindClient))
if t.newClientTrace != nil {
req = req.WithContext(httptrace.WithClientTrace(ctx, t.newClientTrace(req, span)))
} else {
req = req.WithContext(ctx)
}
if t.format != nil {
// SpanContextToRequest will modify its Request argument, which is
// contrary to the contract for http.RoundTripper, so we need to
// pass it a copy of the Request.
// However, the Request struct itself was already copied by
// the WithContext calls above and so we just need to copy the header.
header := make(http.Header)
for k, v := range req.Header {
header[k] = v
}
req.Header = header
t.format.SpanContextToRequest(span.SpanContext(), req)
}
span.AddAttributes(requestAttrs(req)...)
resp, err := t.base.RoundTrip(req)
if err != nil {
span.SetStatus(trace.Status{Code: trace.StatusCodeUnknown, Message: err.Error()})
span.End()
return resp, err
}
span.AddAttributes(responseAttrs(resp)...)
span.SetStatus(TraceStatus(resp.StatusCode, resp.Status))
// span.End() will be invoked after
// a read from resp.Body returns io.EOF or when
// resp.Body.Close() is invoked.
resp.Body = &bodyTracker{rc: resp.Body, span: span}
return resp, err
}
// bodyTracker wraps a response.Body and invokes
// trace.EndSpan on encountering io.EOF on reading
// the body of the original response.
type bodyTracker struct {
rc io.ReadCloser
span *trace.Span
}
var _ io.ReadCloser = (*bodyTracker)(nil)
func (bt *bodyTracker) Read(b []byte) (int, error) {
n, err := bt.rc.Read(b)
switch err {
case nil:
return n, nil
case io.EOF:
bt.span.End()
default:
// For all other errors, set the span status
bt.span.SetStatus(trace.Status{
// Code 2 is the error code for Internal server error.
Code: 2,
Message: err.Error(),
})
}
return n, err
}
func (bt *bodyTracker) Close() error {
// Invoking endSpan on Close will help catch the cases
// in which a read returned a non-nil error, we set the
// span status but didn't end the span.
bt.span.End()
return bt.rc.Close()
}
// CancelRequest cancels an in-flight request by closing its connection.
func (t *traceTransport) CancelRequest(req *http.Request) {
type canceler interface {
CancelRequest(*http.Request)
}
if cr, ok := t.base.(canceler); ok {
cr.CancelRequest(req)
}
}
func spanNameFromURL(req *http.Request) string {
return req.URL.Path
}
func requestAttrs(r *http.Request) []trace.Attribute {
return []trace.Attribute{
trace.StringAttribute(PathAttribute, r.URL.Path),
trace.StringAttribute(HostAttribute, r.URL.Host),
trace.StringAttribute(MethodAttribute, r.Method),
trace.StringAttribute(UserAgentAttribute, r.UserAgent()),
}
}
func responseAttrs(resp *http.Response) []trace.Attribute {
return []trace.Attribute{
trace.Int64Attribute(StatusCodeAttribute, int64(resp.StatusCode)),
}
}
// TraceStatus is a utility to convert the HTTP status code to a trace.Status that
// represents the outcome as closely as possible.
func TraceStatus(httpStatusCode int, statusLine string) trace.Status {
var code int32
if httpStatusCode < 200 || httpStatusCode >= 400 {
code = trace.StatusCodeUnknown
}
switch httpStatusCode {
case 499:
code = trace.StatusCodeCancelled
case http.StatusBadRequest:
code = trace.StatusCodeInvalidArgument
case http.StatusGatewayTimeout:
code = trace.StatusCodeDeadlineExceeded
case http.StatusNotFound:
code = trace.StatusCodeNotFound
case http.StatusForbidden:
code = trace.StatusCodePermissionDenied
case http.StatusUnauthorized: // 401 is actually unauthenticated.
code = trace.StatusCodeUnauthenticated
case http.StatusTooManyRequests:
code = trace.StatusCodeResourceExhausted
case http.StatusNotImplemented:
code = trace.StatusCodeUnimplemented
case http.StatusServiceUnavailable:
code = trace.StatusCodeUnavailable
case http.StatusOK:
code = trace.StatusCodeOK
}
return trace.Status{Code: code, Message: codeToStr[code]}
}
var codeToStr = map[int32]string{
trace.StatusCodeOK: `OK`,
trace.StatusCodeCancelled: `CANCELLED`,
trace.StatusCodeUnknown: `UNKNOWN`,
trace.StatusCodeInvalidArgument: `INVALID_ARGUMENT`,
trace.StatusCodeDeadlineExceeded: `DEADLINE_EXCEEDED`,
trace.StatusCodeNotFound: `NOT_FOUND`,
trace.StatusCodeAlreadyExists: `ALREADY_EXISTS`,
trace.StatusCodePermissionDenied: `PERMISSION_DENIED`,
trace.StatusCodeResourceExhausted: `RESOURCE_EXHAUSTED`,
trace.StatusCodeFailedPrecondition: `FAILED_PRECONDITION`,
trace.StatusCodeAborted: `ABORTED`,
trace.StatusCodeOutOfRange: `OUT_OF_RANGE`,
trace.StatusCodeUnimplemented: `UNIMPLEMENTED`,
trace.StatusCodeInternal: `INTERNAL`,
trace.StatusCodeUnavailable: `UNAVAILABLE`,
trace.StatusCodeDataLoss: `DATA_LOSS`,
trace.StatusCodeUnauthenticated: `UNAUTHENTICATED`,
}
func isHealthEndpoint(path string) bool {
// Health checking is pretty frequent and
// traces collected for health endpoints
// can be extremely noisy and expensive.
// Disable canonical health checking endpoints
// like /healthz and /_ah/health for now.
if path == "/healthz" || path == "/_ah/health" {
return true
}
return false
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
/*
Package stats contains support for OpenCensus stats recording.
OpenCensus allows users to create typed measures, record measurements,
aggregate the collected data, and export the aggregated data.
Measures
A measure represents a type of metric to be tracked and recorded.
For example, latency, request Mb/s, and response Mb/s are measures
to collect from a server.
Each measure needs to be registered before being used. Measure
constructors such as Int64 and Float64 automatically
register the measure by the given name. Each registered measure needs
to be unique by name. Measures also have a description and a unit.
Libraries can define and export measures for their end users to
create views and collect instrumentation data.
Recording measurements
Measurement is a data point to be collected for a measure. For example,
for a latency (ms) measure, 100 is a measurement that represents a 100ms
latency event. Users collect data points on the existing measures with
the current context. Tags from the current context are recorded with the
measurements if they are any.
Recorded measurements are dropped immediately if user is not aggregating
them via views. Users don't necessarily need to conditionally enable/disable
recording to reduce cost. Recording of measurements is cheap.
Libraries can always record measurements, and end-users can later decide
on which measurements they want to collect by registering views. This allows
libraries to turn on the instrumentation by default.
*/
package stats // import "go.opencensus.io/stats"
// TODO(acetechnologist): Add a link to the language independent OpenCensus
// spec when it is available.

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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package internal
import (
"go.opencensus.io/tag"
)
// DefaultRecorder will be called for each Record call.
var DefaultRecorder func(*tag.Map, interface{})
// SubscriptionReporter reports when a view subscribed with a measure.
var SubscriptionReporter func(measure string)

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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package internal // import "go.opencensus.io/stats/internal"
const (
MaxNameLength = 255
)
func IsPrintable(str string) bool {
for _, r := range str {
if !(r >= ' ' && r <= '~') {
return false
}
}
return true
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package stats
import (
"sync"
"sync/atomic"
)
// Measure represents a single numeric value to be tracked and recorded.
// For example, latency, request bytes, and response bytes could be measures
// to collect from a server.
//
// Measures by themselves have no outside effects. In order to be exported,
// the measure needs to be used in a View. If no Views are defined over a
// measure, there is very little cost in recording it.
type Measure interface {
// Name returns the name of this measure.
//
// Measure names are globally unique (among all libraries linked into your program).
// We recommend prefixing the measure name with a domain name relevant to your
// project or application.
//
// Measure names are never sent over the wire or exported to backends.
// They are only used to create Views.
Name() string
// Description returns the human-readable description of this measure.
Description() string
// Unit returns the units for the values this measure takes on.
//
// Units are encoded according to the case-sensitive abbreviations from the
// Unified Code for Units of Measure: http://unitsofmeasure.org/ucum.html
Unit() string
}
// measureDescriptor is the untyped descriptor associated with each measure.
// Int64Measure and Float64Measure wrap measureDescriptor to provide typed
// recording APIs.
// Two Measures with the same name will have the same measureDescriptor.
type measureDescriptor struct {
subs int32 // access atomically
name string
description string
unit string
}
func (m *measureDescriptor) subscribe() {
atomic.StoreInt32(&m.subs, 1)
}
func (m *measureDescriptor) subscribed() bool {
return atomic.LoadInt32(&m.subs) == 1
}
var (
mu sync.RWMutex
measures = make(map[string]*measureDescriptor)
)
func registerMeasureHandle(name, desc, unit string) *measureDescriptor {
mu.Lock()
defer mu.Unlock()
if stored, ok := measures[name]; ok {
return stored
}
m := &measureDescriptor{
name: name,
description: desc,
unit: unit,
}
measures[name] = m
return m
}
// Measurement is the numeric value measured when recording stats. Each measure
// provides methods to create measurements of their kind. For example, Int64Measure
// provides M to convert an int64 into a measurement.
type Measurement struct {
v float64
m Measure
}
// Value returns the value of the Measurement as a float64.
func (m Measurement) Value() float64 {
return m.v
}
// Measure returns the Measure from which this Measurement was created.
func (m Measurement) Measure() Measure {
return m.m
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package stats
// Float64Measure is a measure for float64 values.
type Float64Measure struct {
md *measureDescriptor
}
// Name returns the name of the measure.
func (m *Float64Measure) Name() string {
return m.md.name
}
// Description returns the description of the measure.
func (m *Float64Measure) Description() string {
return m.md.description
}
// Unit returns the unit of the measure.
func (m *Float64Measure) Unit() string {
return m.md.unit
}
// M creates a new float64 measurement.
// Use Record to record measurements.
func (m *Float64Measure) M(v float64) Measurement {
if !m.md.subscribed() {
return Measurement{}
}
return Measurement{m: m, v: v}
}
// Float64 creates a new measure for float64 values.
//
// See the documentation for interface Measure for more guidance on the
// parameters of this function.
func Float64(name, description, unit string) *Float64Measure {
mi := registerMeasureHandle(name, description, unit)
return &Float64Measure{mi}
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package stats
// Int64Measure is a measure for int64 values.
type Int64Measure struct {
md *measureDescriptor
}
// Name returns the name of the measure.
func (m *Int64Measure) Name() string {
return m.md.name
}
// Description returns the description of the measure.
func (m *Int64Measure) Description() string {
return m.md.description
}
// Unit returns the unit of the measure.
func (m *Int64Measure) Unit() string {
return m.md.unit
}
// M creates a new int64 measurement.
// Use Record to record measurements.
func (m *Int64Measure) M(v int64) Measurement {
if !m.md.subscribed() {
return Measurement{}
}
return Measurement{m: m, v: float64(v)}
}
// Int64 creates a new measure for int64 values.
//
// See the documentation for interface Measure for more guidance on the
// parameters of this function.
func Int64(name, description, unit string) *Int64Measure {
mi := registerMeasureHandle(name, description, unit)
return &Int64Measure{mi}
}

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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package stats
import (
"context"
"go.opencensus.io/stats/internal"
"go.opencensus.io/tag"
)
func init() {
internal.SubscriptionReporter = func(measure string) {
mu.Lock()
measures[measure].subscribe()
mu.Unlock()
}
}
// Record records one or multiple measurements with the same tags at once.
// If there are any tags in the context, measurements will be tagged with them.
func Record(ctx context.Context, ms ...Measurement) {
if len(ms) == 0 {
return
}
var record bool
for _, m := range ms {
if (m != Measurement{}) {
record = true
break
}
}
if !record {
return
}
if internal.DefaultRecorder != nil {
internal.DefaultRecorder(tag.FromContext(ctx), ms)
}
}

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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package stats
// Units are encoded according to the case-sensitive abbreviations from the
// Unified Code for Units of Measure: http://unitsofmeasure.org/ucum.html
const (
UnitNone = "1" // Deprecated: Use UnitDimensionless.
UnitDimensionless = "1"
UnitBytes = "By"
UnitMilliseconds = "ms"
)

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package view
// AggType represents the type of aggregation function used on a View.
type AggType int
// All available aggregation types.
const (
AggTypeNone AggType = iota // no aggregation; reserved for future use.
AggTypeCount // the count aggregation, see Count.
AggTypeSum // the sum aggregation, see Sum.
AggTypeDistribution // the distribution aggregation, see Distribution.
AggTypeLastValue // the last value aggregation, see LastValue.
)
func (t AggType) String() string {
return aggTypeName[t]
}
var aggTypeName = map[AggType]string{
AggTypeNone: "None",
AggTypeCount: "Count",
AggTypeSum: "Sum",
AggTypeDistribution: "Distribution",
AggTypeLastValue: "LastValue",
}
// Aggregation represents a data aggregation method. Use one of the functions:
// Count, Sum, or Distribution to construct an Aggregation.
type Aggregation struct {
Type AggType // Type is the AggType of this Aggregation.
Buckets []float64 // Buckets are the bucket endpoints if this Aggregation represents a distribution, see Distribution.
newData func() AggregationData
}
var (
aggCount = &Aggregation{
Type: AggTypeCount,
newData: func() AggregationData {
return &CountData{}
},
}
aggSum = &Aggregation{
Type: AggTypeSum,
newData: func() AggregationData {
return &SumData{}
},
}
)
// Count indicates that data collected and aggregated
// with this method will be turned into a count value.
// For example, total number of accepted requests can be
// aggregated by using Count.
func Count() *Aggregation {
return aggCount
}
// Sum indicates that data collected and aggregated
// with this method will be summed up.
// For example, accumulated request bytes can be aggregated by using
// Sum.
func Sum() *Aggregation {
return aggSum
}
// Distribution indicates that the desired aggregation is
// a histogram distribution.
//
// An distribution aggregation may contain a histogram of the values in the
// population. The bucket boundaries for that histogram are described
// by the bounds. This defines len(bounds)+1 buckets.
//
// If len(bounds) >= 2 then the boundaries for bucket index i are:
//
// [-infinity, bounds[i]) for i = 0
// [bounds[i-1], bounds[i]) for 0 < i < length
// [bounds[i-1], +infinity) for i = length
//
// If len(bounds) is 0 then there is no histogram associated with the
// distribution. There will be a single bucket with boundaries
// (-infinity, +infinity).
//
// If len(bounds) is 1 then there is no finite buckets, and that single
// element is the common boundary of the overflow and underflow buckets.
func Distribution(bounds ...float64) *Aggregation {
return &Aggregation{
Type: AggTypeDistribution,
Buckets: bounds,
newData: func() AggregationData {
return newDistributionData(bounds)
},
}
}
// LastValue only reports the last value recorded using this
// aggregation. All other measurements will be dropped.
func LastValue() *Aggregation {
return &Aggregation{
Type: AggTypeLastValue,
newData: func() AggregationData {
return &LastValueData{}
},
}
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package view
import (
"math"
)
// AggregationData represents an aggregated value from a collection.
// They are reported on the view data during exporting.
// Mosts users won't directly access aggregration data.
type AggregationData interface {
isAggregationData() bool
addSample(v float64)
clone() AggregationData
equal(other AggregationData) bool
}
const epsilon = 1e-9
// CountData is the aggregated data for the Count aggregation.
// A count aggregation processes data and counts the recordings.
//
// Most users won't directly access count data.
type CountData struct {
Value int64
}
func (a *CountData) isAggregationData() bool { return true }
func (a *CountData) addSample(v float64) {
a.Value = a.Value + 1
}
func (a *CountData) clone() AggregationData {
return &CountData{Value: a.Value}
}
func (a *CountData) equal(other AggregationData) bool {
a2, ok := other.(*CountData)
if !ok {
return false
}
return a.Value == a2.Value
}
// SumData is the aggregated data for the Sum aggregation.
// A sum aggregation processes data and sums up the recordings.
//
// Most users won't directly access sum data.
type SumData struct {
Value float64
}
func (a *SumData) isAggregationData() bool { return true }
func (a *SumData) addSample(f float64) {
a.Value += f
}
func (a *SumData) clone() AggregationData {
return &SumData{Value: a.Value}
}
func (a *SumData) equal(other AggregationData) bool {
a2, ok := other.(*SumData)
if !ok {
return false
}
return math.Pow(a.Value-a2.Value, 2) < epsilon
}
// DistributionData is the aggregated data for the
// Distribution aggregation.
//
// Most users won't directly access distribution data.
type DistributionData struct {
Count int64 // number of data points aggregated
Min float64 // minimum value in the distribution
Max float64 // max value in the distribution
Mean float64 // mean of the distribution
SumOfSquaredDev float64 // sum of the squared deviation from the mean
CountPerBucket []int64 // number of occurrences per bucket
bounds []float64 // histogram distribution of the values
}
func newDistributionData(bounds []float64) *DistributionData {
return &DistributionData{
CountPerBucket: make([]int64, len(bounds)+1),
bounds: bounds,
Min: math.MaxFloat64,
Max: math.SmallestNonzeroFloat64,
}
}
// Sum returns the sum of all samples collected.
func (a *DistributionData) Sum() float64 { return a.Mean * float64(a.Count) }
func (a *DistributionData) variance() float64 {
if a.Count <= 1 {
return 0
}
return a.SumOfSquaredDev / float64(a.Count-1)
}
func (a *DistributionData) isAggregationData() bool { return true }
func (a *DistributionData) addSample(f float64) {
if f < a.Min {
a.Min = f
}
if f > a.Max {
a.Max = f
}
a.Count++
a.incrementBucketCount(f)
if a.Count == 1 {
a.Mean = f
return
}
oldMean := a.Mean
a.Mean = a.Mean + (f-a.Mean)/float64(a.Count)
a.SumOfSquaredDev = a.SumOfSquaredDev + (f-oldMean)*(f-a.Mean)
}
func (a *DistributionData) incrementBucketCount(f float64) {
if len(a.bounds) == 0 {
a.CountPerBucket[0]++
return
}
for i, b := range a.bounds {
if f < b {
a.CountPerBucket[i]++
return
}
}
a.CountPerBucket[len(a.bounds)]++
}
func (a *DistributionData) clone() AggregationData {
counts := make([]int64, len(a.CountPerBucket))
copy(counts, a.CountPerBucket)
c := *a
c.CountPerBucket = counts
return &c
}
func (a *DistributionData) equal(other AggregationData) bool {
a2, ok := other.(*DistributionData)
if !ok {
return false
}
if a2 == nil {
return false
}
if len(a.CountPerBucket) != len(a2.CountPerBucket) {
return false
}
for i := range a.CountPerBucket {
if a.CountPerBucket[i] != a2.CountPerBucket[i] {
return false
}
}
return a.Count == a2.Count && a.Min == a2.Min && a.Max == a2.Max && math.Pow(a.Mean-a2.Mean, 2) < epsilon && math.Pow(a.variance()-a2.variance(), 2) < epsilon
}
// LastValueData returns the last value recorded for LastValue aggregation.
type LastValueData struct {
Value float64
}
func (l *LastValueData) isAggregationData() bool {
return true
}
func (l *LastValueData) addSample(v float64) {
l.Value = v
}
func (l *LastValueData) clone() AggregationData {
return &LastValueData{l.Value}
}
func (l *LastValueData) equal(other AggregationData) bool {
a2, ok := other.(*LastValueData)
if !ok {
return false
}
return l.Value == a2.Value
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package view
import (
"sort"
"go.opencensus.io/internal/tagencoding"
"go.opencensus.io/tag"
)
type collector struct {
// signatures holds the aggregations values for each unique tag signature
// (values for all keys) to its aggregator.
signatures map[string]AggregationData
// Aggregation is the description of the aggregation to perform for this
// view.
a *Aggregation
}
func (c *collector) addSample(s string, v float64) {
aggregator, ok := c.signatures[s]
if !ok {
aggregator = c.a.newData()
c.signatures[s] = aggregator
}
aggregator.addSample(v)
}
// collectRows returns a snapshot of the collected Row values.
func (c *collector) collectedRows(keys []tag.Key) []*Row {
rows := make([]*Row, 0, len(c.signatures))
for sig, aggregator := range c.signatures {
tags := decodeTags([]byte(sig), keys)
row := &Row{Tags: tags, Data: aggregator.clone()}
rows = append(rows, row)
}
return rows
}
func (c *collector) clearRows() {
c.signatures = make(map[string]AggregationData)
}
// encodeWithKeys encodes the map by using values
// only associated with the keys provided.
func encodeWithKeys(m *tag.Map, keys []tag.Key) []byte {
vb := &tagencoding.Values{
Buffer: make([]byte, len(keys)),
}
for _, k := range keys {
v, _ := m.Value(k)
vb.WriteValue([]byte(v))
}
return vb.Bytes()
}
// decodeTags decodes tags from the buffer and
// orders them by the keys.
func decodeTags(buf []byte, keys []tag.Key) []tag.Tag {
vb := &tagencoding.Values{Buffer: buf}
var tags []tag.Tag
for _, k := range keys {
v := vb.ReadValue()
if v != nil {
tags = append(tags, tag.Tag{Key: k, Value: string(v)})
}
}
vb.ReadIndex = 0
sort.Slice(tags, func(i, j int) bool { return tags[i].Key.Name() < tags[j].Key.Name() })
return tags
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
/*
Package view contains support for collecting and exposing aggregates over stats.
In order to collect measurements, views need to be defined and registered.
A view allows recorded measurements to be filtered and aggregated over a time window.
All recorded measurements can be filtered by a list of tags.
OpenCensus provides several aggregation methods: count, distribution and sum.
Count aggregation only counts the number of measurement points. Distribution
aggregation provides statistical summary of the aggregated data. Sum distribution
sums up the measurement points. Aggregations are cumulative.
Users can dynamically create and delete views.
Libraries can export their own views and claim the view names
by registering them themselves.
Exporting
Collected and aggregated data can be exported to a metric collection
backend by registering its exporter.
Multiple exporters can be registered to upload the data to various
different backends. Users need to unregister the exporters once they
no longer are needed.
*/
package view // import "go.opencensus.io/stats/view"
// TODO(acetechnologist): Add a link to the language independent OpenCensus
// spec when it is available.

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vendor/go.opencensus.io/stats/view/export.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package view
import "sync"
var (
exportersMu sync.RWMutex // guards exporters
exporters = make(map[Exporter]struct{})
)
// Exporter exports the collected records as view data.
//
// The ExportView method should return quickly; if an
// Exporter takes a significant amount of time to
// process a Data, that work should be done on another goroutine.
//
// It is safe to assume that ExportView will not be called concurrently from
// multiple goroutines.
//
// The Data should not be modified.
type Exporter interface {
ExportView(viewData *Data)
}
// RegisterExporter registers an exporter.
// Collected data will be reported via all the
// registered exporters. Once you no longer
// want data to be exported, invoke UnregisterExporter
// with the previously registered exporter.
//
// Binaries can register exporters, libraries shouldn't register exporters.
func RegisterExporter(e Exporter) {
exportersMu.Lock()
defer exportersMu.Unlock()
exporters[e] = struct{}{}
}
// UnregisterExporter unregisters an exporter.
func UnregisterExporter(e Exporter) {
exportersMu.Lock()
defer exportersMu.Unlock()
delete(exporters, e)
}

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vendor/go.opencensus.io/stats/view/view.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package view
import (
"bytes"
"fmt"
"reflect"
"sort"
"sync/atomic"
"time"
"go.opencensus.io/stats"
"go.opencensus.io/stats/internal"
"go.opencensus.io/tag"
)
// View allows users to aggregate the recorded stats.Measurements.
// Views need to be passed to the Register function to be before data will be
// collected and sent to Exporters.
type View struct {
Name string // Name of View. Must be unique. If unset, will default to the name of the Measure.
Description string // Description is a human-readable description for this view.
// TagKeys are the tag keys describing the grouping of this view.
// A single Row will be produced for each combination of associated tag values.
TagKeys []tag.Key
// Measure is a stats.Measure to aggregate in this view.
Measure stats.Measure
// Aggregation is the aggregation function tp apply to the set of Measurements.
Aggregation *Aggregation
}
// WithName returns a copy of the View with a new name. This is useful for
// renaming views to cope with limitations placed on metric names by various
// backends.
func (v *View) WithName(name string) *View {
vNew := *v
vNew.Name = name
return &vNew
}
// same compares two views and returns true if they represent the same aggregation.
func (v *View) same(other *View) bool {
if v == other {
return true
}
if v == nil {
return false
}
return reflect.DeepEqual(v.Aggregation, other.Aggregation) &&
v.Measure.Name() == other.Measure.Name()
}
// canonicalize canonicalizes v by setting explicit
// defaults for Name and Description and sorting the TagKeys
func (v *View) canonicalize() error {
if v.Measure == nil {
return fmt.Errorf("cannot register view %q: measure not set", v.Name)
}
if v.Aggregation == nil {
return fmt.Errorf("cannot register view %q: aggregation not set", v.Name)
}
if v.Name == "" {
v.Name = v.Measure.Name()
}
if v.Description == "" {
v.Description = v.Measure.Description()
}
if err := checkViewName(v.Name); err != nil {
return err
}
sort.Slice(v.TagKeys, func(i, j int) bool {
return v.TagKeys[i].Name() < v.TagKeys[j].Name()
})
return nil
}
// viewInternal is the internal representation of a View.
type viewInternal struct {
view *View // view is the canonicalized View definition associated with this view.
subscribed uint32 // 1 if someone is subscribed and data need to be exported, use atomic to access
collector *collector
}
func newViewInternal(v *View) (*viewInternal, error) {
return &viewInternal{
view: v,
collector: &collector{make(map[string]AggregationData), v.Aggregation},
}, nil
}
func (v *viewInternal) subscribe() {
atomic.StoreUint32(&v.subscribed, 1)
}
func (v *viewInternal) unsubscribe() {
atomic.StoreUint32(&v.subscribed, 0)
}
// isSubscribed returns true if the view is exporting
// data by subscription.
func (v *viewInternal) isSubscribed() bool {
return atomic.LoadUint32(&v.subscribed) == 1
}
func (v *viewInternal) clearRows() {
v.collector.clearRows()
}
func (v *viewInternal) collectedRows() []*Row {
return v.collector.collectedRows(v.view.TagKeys)
}
func (v *viewInternal) addSample(m *tag.Map, val float64) {
if !v.isSubscribed() {
return
}
sig := string(encodeWithKeys(m, v.view.TagKeys))
v.collector.addSample(sig, val)
}
// A Data is a set of rows about usage of the single measure associated
// with the given view. Each row is specific to a unique set of tags.
type Data struct {
View *View
Start, End time.Time
Rows []*Row
}
// Row is the collected value for a specific set of key value pairs a.k.a tags.
type Row struct {
Tags []tag.Tag
Data AggregationData
}
func (r *Row) String() string {
var buffer bytes.Buffer
buffer.WriteString("{ ")
buffer.WriteString("{ ")
for _, t := range r.Tags {
buffer.WriteString(fmt.Sprintf("{%v %v}", t.Key.Name(), t.Value))
}
buffer.WriteString(" }")
buffer.WriteString(fmt.Sprintf("%v", r.Data))
buffer.WriteString(" }")
return buffer.String()
}
// Equal returns true if both rows are equal. Tags are expected to be ordered
// by the key name. Even both rows have the same tags but the tags appear in
// different orders it will return false.
func (r *Row) Equal(other *Row) bool {
if r == other {
return true
}
return reflect.DeepEqual(r.Tags, other.Tags) && r.Data.equal(other.Data)
}
func checkViewName(name string) error {
if len(name) > internal.MaxNameLength {
return fmt.Errorf("view name cannot be larger than %v", internal.MaxNameLength)
}
if !internal.IsPrintable(name) {
return fmt.Errorf("view name needs to be an ASCII string")
}
return nil
}

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vendor/go.opencensus.io/stats/view/worker.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package view
import (
"fmt"
"time"
"go.opencensus.io/stats"
"go.opencensus.io/stats/internal"
"go.opencensus.io/tag"
)
func init() {
defaultWorker = newWorker()
go defaultWorker.start()
internal.DefaultRecorder = record
}
type measureRef struct {
measure string
views map[*viewInternal]struct{}
}
type worker struct {
measures map[string]*measureRef
views map[string]*viewInternal
startTimes map[*viewInternal]time.Time
timer *time.Ticker
c chan command
quit, done chan bool
}
var defaultWorker *worker
var defaultReportingDuration = 10 * time.Second
// Find returns a registered view associated with this name.
// If no registered view is found, nil is returned.
func Find(name string) (v *View) {
req := &getViewByNameReq{
name: name,
c: make(chan *getViewByNameResp),
}
defaultWorker.c <- req
resp := <-req.c
return resp.v
}
// Register begins collecting data for the given views.
// Once a view is registered, it reports data to the registered exporters.
func Register(views ...*View) error {
for _, v := range views {
if err := v.canonicalize(); err != nil {
return err
}
}
req := &registerViewReq{
views: views,
err: make(chan error),
}
defaultWorker.c <- req
return <-req.err
}
// Unregister the given views. Data will not longer be exported for these views
// after Unregister returns.
// It is not necessary to unregister from views you expect to collect for the
// duration of your program execution.
func Unregister(views ...*View) {
names := make([]string, len(views))
for i := range views {
names[i] = views[i].Name
}
req := &unregisterFromViewReq{
views: names,
done: make(chan struct{}),
}
defaultWorker.c <- req
<-req.done
}
// RetrieveData gets a snapshot of the data collected for the the view registered
// with the given name. It is intended for testing only.
func RetrieveData(viewName string) ([]*Row, error) {
req := &retrieveDataReq{
now: time.Now(),
v: viewName,
c: make(chan *retrieveDataResp),
}
defaultWorker.c <- req
resp := <-req.c
return resp.rows, resp.err
}
func record(tags *tag.Map, ms interface{}) {
req := &recordReq{
tm: tags,
ms: ms.([]stats.Measurement),
}
defaultWorker.c <- req
}
// SetReportingPeriod sets the interval between reporting aggregated views in
// the program. If duration is less than or equal to zero, it enables the
// default behavior.
//
// Note: each exporter makes different promises about what the lowest supported
// duration is. For example, the Stackdriver exporter recommends a value no
// lower than 1 minute. Consult each exporter per your needs.
func SetReportingPeriod(d time.Duration) {
// TODO(acetechnologist): ensure that the duration d is more than a certain
// value. e.g. 1s
req := &setReportingPeriodReq{
d: d,
c: make(chan bool),
}
defaultWorker.c <- req
<-req.c // don't return until the timer is set to the new duration.
}
func newWorker() *worker {
return &worker{
measures: make(map[string]*measureRef),
views: make(map[string]*viewInternal),
startTimes: make(map[*viewInternal]time.Time),
timer: time.NewTicker(defaultReportingDuration),
c: make(chan command, 1024),
quit: make(chan bool),
done: make(chan bool),
}
}
func (w *worker) start() {
for {
select {
case cmd := <-w.c:
cmd.handleCommand(w)
case <-w.timer.C:
w.reportUsage(time.Now())
case <-w.quit:
w.timer.Stop()
close(w.c)
w.done <- true
return
}
}
}
func (w *worker) stop() {
w.quit <- true
<-w.done
}
func (w *worker) getMeasureRef(name string) *measureRef {
if mr, ok := w.measures[name]; ok {
return mr
}
mr := &measureRef{
measure: name,
views: make(map[*viewInternal]struct{}),
}
w.measures[name] = mr
return mr
}
func (w *worker) tryRegisterView(v *View) (*viewInternal, error) {
vi, err := newViewInternal(v)
if err != nil {
return nil, err
}
if x, ok := w.views[vi.view.Name]; ok {
if !x.view.same(vi.view) {
return nil, fmt.Errorf("cannot register view %q; a different view with the same name is already registered", v.Name)
}
// the view is already registered so there is nothing to do and the
// command is considered successful.
return x, nil
}
w.views[vi.view.Name] = vi
ref := w.getMeasureRef(vi.view.Measure.Name())
ref.views[vi] = struct{}{}
return vi, nil
}
func (w *worker) reportView(v *viewInternal, now time.Time) {
if !v.isSubscribed() {
return
}
rows := v.collectedRows()
_, ok := w.startTimes[v]
if !ok {
w.startTimes[v] = now
}
viewData := &Data{
View: v.view,
Start: w.startTimes[v],
End: time.Now(),
Rows: rows,
}
exportersMu.Lock()
for e := range exporters {
e.ExportView(viewData)
}
exportersMu.Unlock()
}
func (w *worker) reportUsage(now time.Time) {
for _, v := range w.views {
w.reportView(v, now)
}
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package view
import (
"errors"
"fmt"
"strings"
"time"
"go.opencensus.io/stats"
"go.opencensus.io/stats/internal"
"go.opencensus.io/tag"
)
type command interface {
handleCommand(w *worker)
}
// getViewByNameReq is the command to get a view given its name.
type getViewByNameReq struct {
name string
c chan *getViewByNameResp
}
type getViewByNameResp struct {
v *View
}
func (cmd *getViewByNameReq) handleCommand(w *worker) {
v := w.views[cmd.name]
if v == nil {
cmd.c <- &getViewByNameResp{nil}
return
}
cmd.c <- &getViewByNameResp{v.view}
}
// registerViewReq is the command to register a view.
type registerViewReq struct {
views []*View
err chan error
}
func (cmd *registerViewReq) handleCommand(w *worker) {
var errstr []string
for _, view := range cmd.views {
vi, err := w.tryRegisterView(view)
if err != nil {
errstr = append(errstr, fmt.Sprintf("%s: %v", view.Name, err))
continue
}
internal.SubscriptionReporter(view.Measure.Name())
vi.subscribe()
}
if len(errstr) > 0 {
cmd.err <- errors.New(strings.Join(errstr, "\n"))
} else {
cmd.err <- nil
}
}
// unregisterFromViewReq is the command to unregister to a view. Has no
// impact on the data collection for client that are pulling data from the
// library.
type unregisterFromViewReq struct {
views []string
done chan struct{}
}
func (cmd *unregisterFromViewReq) handleCommand(w *worker) {
for _, name := range cmd.views {
vi, ok := w.views[name]
if !ok {
continue
}
// Report pending data for this view before removing it.
w.reportView(vi, time.Now())
vi.unsubscribe()
if !vi.isSubscribed() {
// this was the last subscription and view is not collecting anymore.
// The collected data can be cleared.
vi.clearRows()
}
delete(w.views, name)
}
cmd.done <- struct{}{}
}
// retrieveDataReq is the command to retrieve data for a view.
type retrieveDataReq struct {
now time.Time
v string
c chan *retrieveDataResp
}
type retrieveDataResp struct {
rows []*Row
err error
}
func (cmd *retrieveDataReq) handleCommand(w *worker) {
vi, ok := w.views[cmd.v]
if !ok {
cmd.c <- &retrieveDataResp{
nil,
fmt.Errorf("cannot retrieve data; view %q is not registered", cmd.v),
}
return
}
if !vi.isSubscribed() {
cmd.c <- &retrieveDataResp{
nil,
fmt.Errorf("cannot retrieve data; view %q has no subscriptions or collection is not forcibly started", cmd.v),
}
return
}
cmd.c <- &retrieveDataResp{
vi.collectedRows(),
nil,
}
}
// recordReq is the command to record data related to multiple measures
// at once.
type recordReq struct {
tm *tag.Map
ms []stats.Measurement
}
func (cmd *recordReq) handleCommand(w *worker) {
for _, m := range cmd.ms {
if (m == stats.Measurement{}) { // not registered
continue
}
ref := w.getMeasureRef(m.Measure().Name())
for v := range ref.views {
v.addSample(cmd.tm, m.Value())
}
}
}
// setReportingPeriodReq is the command to modify the duration between
// reporting the collected data to the registered clients.
type setReportingPeriodReq struct {
d time.Duration
c chan bool
}
func (cmd *setReportingPeriodReq) handleCommand(w *worker) {
w.timer.Stop()
if cmd.d <= 0 {
w.timer = time.NewTicker(defaultReportingDuration)
} else {
w.timer = time.NewTicker(cmd.d)
}
cmd.c <- true
}

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vendor/go.opencensus.io/tag/context.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package tag
import "context"
// FromContext returns the tag map stored in the context.
func FromContext(ctx context.Context) *Map {
// The returned tag map shouldn't be mutated.
ts := ctx.Value(mapCtxKey)
if ts == nil {
return nil
}
return ts.(*Map)
}
// NewContext creates a new context with the given tag map.
// To propagate a tag map to downstream methods and downstream RPCs, add a tag map
// to the current context. NewContext will return a copy of the current context,
// and put the tag map into the returned one.
// If there is already a tag map in the current context, it will be replaced with m.
func NewContext(ctx context.Context, m *Map) context.Context {
return context.WithValue(ctx, mapCtxKey, m)
}
type ctxKey struct{}
var mapCtxKey = ctxKey{}

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vendor/go.opencensus.io/tag/doc.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
/*
Package tag contains OpenCensus tags.
Tags are key-value pairs. Tags provide additional cardinality to
the OpenCensus instrumentation data.
Tags can be propagated on the wire and in the same
process via context.Context. Encode and Decode should be
used to represent tags into their binary propagation form.
*/
package tag // import "go.opencensus.io/tag"

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vendor/go.opencensus.io/tag/key.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package tag
// Key represents a tag key.
type Key struct {
name string
}
// NewKey creates or retrieves a string key identified by name.
// Calling NewKey consequently with the same name returns the same key.
func NewKey(name string) (Key, error) {
if !checkKeyName(name) {
return Key{}, errInvalidKeyName
}
return Key{name: name}, nil
}
// Name returns the name of the key.
func (k Key) Name() string {
return k.name
}

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vendor/go.opencensus.io/tag/map.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package tag
import (
"bytes"
"context"
"fmt"
"sort"
)
// Tag is a key value pair that can be propagated on wire.
type Tag struct {
Key Key
Value string
}
// Map is a map of tags. Use New to create a context containing
// a new Map.
type Map struct {
m map[Key]string
}
// Value returns the value for the key if a value for the key exists.
func (m *Map) Value(k Key) (string, bool) {
if m == nil {
return "", false
}
v, ok := m.m[k]
return v, ok
}
func (m *Map) String() string {
if m == nil {
return "nil"
}
keys := make([]Key, 0, len(m.m))
for k := range m.m {
keys = append(keys, k)
}
sort.Slice(keys, func(i, j int) bool { return keys[i].Name() < keys[j].Name() })
var buffer bytes.Buffer
buffer.WriteString("{ ")
for _, k := range keys {
buffer.WriteString(fmt.Sprintf("{%v %v}", k.name, m.m[k]))
}
buffer.WriteString(" }")
return buffer.String()
}
func (m *Map) insert(k Key, v string) {
if _, ok := m.m[k]; ok {
return
}
m.m[k] = v
}
func (m *Map) update(k Key, v string) {
if _, ok := m.m[k]; ok {
m.m[k] = v
}
}
func (m *Map) upsert(k Key, v string) {
m.m[k] = v
}
func (m *Map) delete(k Key) {
delete(m.m, k)
}
func newMap() *Map {
return &Map{m: make(map[Key]string)}
}
// Mutator modifies a tag map.
type Mutator interface {
Mutate(t *Map) (*Map, error)
}
// Insert returns a mutator that inserts a
// value associated with k. If k already exists in the tag map,
// mutator doesn't update the value.
func Insert(k Key, v string) Mutator {
return &mutator{
fn: func(m *Map) (*Map, error) {
if !checkValue(v) {
return nil, errInvalidValue
}
m.insert(k, v)
return m, nil
},
}
}
// Update returns a mutator that updates the
// value of the tag associated with k with v. If k doesn't
// exists in the tag map, the mutator doesn't insert the value.
func Update(k Key, v string) Mutator {
return &mutator{
fn: func(m *Map) (*Map, error) {
if !checkValue(v) {
return nil, errInvalidValue
}
m.update(k, v)
return m, nil
},
}
}
// Upsert returns a mutator that upserts the
// value of the tag associated with k with v. It inserts the
// value if k doesn't exist already. It mutates the value
// if k already exists.
func Upsert(k Key, v string) Mutator {
return &mutator{
fn: func(m *Map) (*Map, error) {
if !checkValue(v) {
return nil, errInvalidValue
}
m.upsert(k, v)
return m, nil
},
}
}
// Delete returns a mutator that deletes
// the value associated with k.
func Delete(k Key) Mutator {
return &mutator{
fn: func(m *Map) (*Map, error) {
m.delete(k)
return m, nil
},
}
}
// New returns a new context that contains a tag map
// originated from the incoming context and modified
// with the provided mutators.
func New(ctx context.Context, mutator ...Mutator) (context.Context, error) {
m := newMap()
orig := FromContext(ctx)
if orig != nil {
for k, v := range orig.m {
if !checkKeyName(k.Name()) {
return ctx, fmt.Errorf("key:%q: %v", k, errInvalidKeyName)
}
if !checkValue(v) {
return ctx, fmt.Errorf("key:%q value:%q: %v", k.Name(), v, errInvalidValue)
}
m.insert(k, v)
}
}
var err error
for _, mod := range mutator {
m, err = mod.Mutate(m)
if err != nil {
return ctx, err
}
}
return NewContext(ctx, m), nil
}
// Do is similar to pprof.Do: a convenience for installing the tags
// from the context as Go profiler labels. This allows you to
// correlated runtime profiling with stats.
//
// It converts the key/values from the given map to Go profiler labels
// and calls pprof.Do.
//
// Do is going to do nothing if your Go version is below 1.9.
func Do(ctx context.Context, f func(ctx context.Context)) {
do(ctx, f)
}
type mutator struct {
fn func(t *Map) (*Map, error)
}
func (m *mutator) Mutate(t *Map) (*Map, error) {
return m.fn(t)
}

234
vendor/go.opencensus.io/tag/map_codec.go generated vendored Normal file
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@ -0,0 +1,234 @@
// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package tag
import (
"encoding/binary"
"fmt"
)
// KeyType defines the types of keys allowed. Currently only keyTypeString is
// supported.
type keyType byte
const (
keyTypeString keyType = iota
keyTypeInt64
keyTypeTrue
keyTypeFalse
tagsVersionID = byte(0)
)
type encoderGRPC struct {
buf []byte
writeIdx, readIdx int
}
// writeKeyString writes the fieldID '0' followed by the key string and value
// string.
func (eg *encoderGRPC) writeTagString(k, v string) {
eg.writeByte(byte(keyTypeString))
eg.writeStringWithVarintLen(k)
eg.writeStringWithVarintLen(v)
}
func (eg *encoderGRPC) writeTagUint64(k string, i uint64) {
eg.writeByte(byte(keyTypeInt64))
eg.writeStringWithVarintLen(k)
eg.writeUint64(i)
}
func (eg *encoderGRPC) writeTagTrue(k string) {
eg.writeByte(byte(keyTypeTrue))
eg.writeStringWithVarintLen(k)
}
func (eg *encoderGRPC) writeTagFalse(k string) {
eg.writeByte(byte(keyTypeFalse))
eg.writeStringWithVarintLen(k)
}
func (eg *encoderGRPC) writeBytesWithVarintLen(bytes []byte) {
length := len(bytes)
eg.growIfRequired(binary.MaxVarintLen64 + length)
eg.writeIdx += binary.PutUvarint(eg.buf[eg.writeIdx:], uint64(length))
copy(eg.buf[eg.writeIdx:], bytes)
eg.writeIdx += length
}
func (eg *encoderGRPC) writeStringWithVarintLen(s string) {
length := len(s)
eg.growIfRequired(binary.MaxVarintLen64 + length)
eg.writeIdx += binary.PutUvarint(eg.buf[eg.writeIdx:], uint64(length))
copy(eg.buf[eg.writeIdx:], s)
eg.writeIdx += length
}
func (eg *encoderGRPC) writeByte(v byte) {
eg.growIfRequired(1)
eg.buf[eg.writeIdx] = v
eg.writeIdx++
}
func (eg *encoderGRPC) writeUint32(i uint32) {
eg.growIfRequired(4)
binary.LittleEndian.PutUint32(eg.buf[eg.writeIdx:], i)
eg.writeIdx += 4
}
func (eg *encoderGRPC) writeUint64(i uint64) {
eg.growIfRequired(8)
binary.LittleEndian.PutUint64(eg.buf[eg.writeIdx:], i)
eg.writeIdx += 8
}
func (eg *encoderGRPC) readByte() byte {
b := eg.buf[eg.readIdx]
eg.readIdx++
return b
}
func (eg *encoderGRPC) readUint32() uint32 {
i := binary.LittleEndian.Uint32(eg.buf[eg.readIdx:])
eg.readIdx += 4
return i
}
func (eg *encoderGRPC) readUint64() uint64 {
i := binary.LittleEndian.Uint64(eg.buf[eg.readIdx:])
eg.readIdx += 8
return i
}
func (eg *encoderGRPC) readBytesWithVarintLen() ([]byte, error) {
if eg.readEnded() {
return nil, fmt.Errorf("unexpected end while readBytesWithVarintLen '%x' starting at idx '%v'", eg.buf, eg.readIdx)
}
length, valueStart := binary.Uvarint(eg.buf[eg.readIdx:])
if valueStart <= 0 {
return nil, fmt.Errorf("unexpected end while readBytesWithVarintLen '%x' starting at idx '%v'", eg.buf, eg.readIdx)
}
valueStart += eg.readIdx
valueEnd := valueStart + int(length)
if valueEnd > len(eg.buf) {
return nil, fmt.Errorf("malformed encoding: length:%v, upper:%v, maxLength:%v", length, valueEnd, len(eg.buf))
}
eg.readIdx = valueEnd
return eg.buf[valueStart:valueEnd], nil
}
func (eg *encoderGRPC) readStringWithVarintLen() (string, error) {
bytes, err := eg.readBytesWithVarintLen()
if err != nil {
return "", err
}
return string(bytes), nil
}
func (eg *encoderGRPC) growIfRequired(expected int) {
if len(eg.buf)-eg.writeIdx < expected {
tmp := make([]byte, 2*(len(eg.buf)+1)+expected)
copy(tmp, eg.buf)
eg.buf = tmp
}
}
func (eg *encoderGRPC) readEnded() bool {
return eg.readIdx >= len(eg.buf)
}
func (eg *encoderGRPC) bytes() []byte {
return eg.buf[:eg.writeIdx]
}
// Encode encodes the tag map into a []byte. It is useful to propagate
// the tag maps on wire in binary format.
func Encode(m *Map) []byte {
eg := &encoderGRPC{
buf: make([]byte, len(m.m)),
}
eg.writeByte(byte(tagsVersionID))
for k, v := range m.m {
eg.writeByte(byte(keyTypeString))
eg.writeStringWithVarintLen(k.name)
eg.writeBytesWithVarintLen([]byte(v))
}
return eg.bytes()
}
// Decode decodes the given []byte into a tag map.
func Decode(bytes []byte) (*Map, error) {
ts := newMap()
err := DecodeEach(bytes, ts.upsert)
if err != nil {
// no partial failures
return nil, err
}
return ts, nil
}
// DecodeEach decodes the given serialized tag map, calling handler for each
// tag key and value decoded.
func DecodeEach(bytes []byte, fn func(key Key, val string)) error {
eg := &encoderGRPC{
buf: bytes,
}
if len(eg.buf) == 0 {
return nil
}
version := eg.readByte()
if version > tagsVersionID {
return fmt.Errorf("cannot decode: unsupported version: %q; supports only up to: %q", version, tagsVersionID)
}
for !eg.readEnded() {
typ := keyType(eg.readByte())
if typ != keyTypeString {
return fmt.Errorf("cannot decode: invalid key type: %q", typ)
}
k, err := eg.readBytesWithVarintLen()
if err != nil {
return err
}
v, err := eg.readBytesWithVarintLen()
if err != nil {
return err
}
key, err := NewKey(string(k))
if err != nil {
return err
}
val := string(v)
if !checkValue(val) {
return errInvalidValue
}
fn(key, val)
if err != nil {
return err
}
}
return nil
}

29
vendor/google.golang.org/grpc/health/grpc_health_v1/health.proto → vendor/go.opencensus.io/tag/profile_19.go generated vendored
View File

@ -1,4 +1,4 @@
// Copyright 2017 gRPC authors.
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
@ -12,23 +12,20 @@
// See the License for the specific language governing permissions and
// limitations under the License.
syntax = "proto3";
// +build go1.9
package grpc.health.v1;
package tag
message HealthCheckRequest {
string service = 1;
}
import (
"context"
"runtime/pprof"
)
message HealthCheckResponse {
enum ServingStatus {
UNKNOWN = 0;
SERVING = 1;
NOT_SERVING = 2;
func do(ctx context.Context, f func(ctx context.Context)) {
m := FromContext(ctx)
keyvals := make([]string, 0, 2*len(m.m))
for k, v := range m.m {
keyvals = append(keyvals, k.Name(), v)
}
ServingStatus status = 1;
}
service Health{
rpc Check(HealthCheckRequest) returns (HealthCheckResponse);
pprof.Do(ctx, pprof.Labels(keyvals...), f)
}

23
vendor/go.opencensus.io/tag/profile_not19.go generated vendored Normal file
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@ -0,0 +1,23 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !go1.9
package tag
import "context"
func do(ctx context.Context, f func(ctx context.Context)) {
f(ctx)
}

56
vendor/go.opencensus.io/tag/validate.go generated vendored Normal file
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@ -0,0 +1,56 @@
// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package tag
import "errors"
const (
maxKeyLength = 255
// valid are restricted to US-ASCII subset (range 0x20 (' ') to 0x7e ('~')).
validKeyValueMin = 32
validKeyValueMax = 126
)
var (
errInvalidKeyName = errors.New("invalid key name: only ASCII characters accepted; max length must be 255 characters")
errInvalidValue = errors.New("invalid value: only ASCII characters accepted; max length must be 255 characters")
)
func checkKeyName(name string) bool {
if len(name) == 0 {
return false
}
if len(name) > maxKeyLength {
return false
}
return isASCII(name)
}
func isASCII(s string) bool {
for _, c := range s {
if (c < validKeyValueMin) || (c > validKeyValueMax) {
return false
}
}
return true
}
func checkValue(v string) bool {
if len(v) > maxKeyLength {
return false
}
return isASCII(v)
}

114
vendor/go.opencensus.io/trace/basetypes.go generated vendored Normal file
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@ -0,0 +1,114 @@
// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
import (
"fmt"
"time"
)
type (
// TraceID is a 16-byte identifier for a set of spans.
TraceID [16]byte
// SpanID is an 8-byte identifier for a single span.
SpanID [8]byte
)
func (t TraceID) String() string {
return fmt.Sprintf("%02x", t[:])
}
func (s SpanID) String() string {
return fmt.Sprintf("%02x", s[:])
}
// Annotation represents a text annotation with a set of attributes and a timestamp.
type Annotation struct {
Time time.Time
Message string
Attributes map[string]interface{}
}
// Attribute represents a key-value pair on a span, link or annotation.
// Construct with one of: BoolAttribute, Int64Attribute, or StringAttribute.
type Attribute struct {
key string
value interface{}
}
// BoolAttribute returns a bool-valued attribute.
func BoolAttribute(key string, value bool) Attribute {
return Attribute{key: key, value: value}
}
// Int64Attribute returns an int64-valued attribute.
func Int64Attribute(key string, value int64) Attribute {
return Attribute{key: key, value: value}
}
// StringAttribute returns a string-valued attribute.
func StringAttribute(key string, value string) Attribute {
return Attribute{key: key, value: value}
}
// LinkType specifies the relationship between the span that had the link
// added, and the linked span.
type LinkType int32
// LinkType values.
const (
LinkTypeUnspecified LinkType = iota // The relationship of the two spans is unknown.
LinkTypeChild // The current span is a child of the linked span.
LinkTypeParent // The current span is the parent of the linked span.
)
// Link represents a reference from one span to another span.
type Link struct {
TraceID TraceID
SpanID SpanID
Type LinkType
// Attributes is a set of attributes on the link.
Attributes map[string]interface{}
}
// MessageEventType specifies the type of message event.
type MessageEventType int32
// MessageEventType values.
const (
MessageEventTypeUnspecified MessageEventType = iota // Unknown event type.
MessageEventTypeSent // Indicates a sent RPC message.
MessageEventTypeRecv // Indicates a received RPC message.
)
// MessageEvent represents an event describing a message sent or received on the network.
type MessageEvent struct {
Time time.Time
EventType MessageEventType
MessageID int64
UncompressedByteSize int64
CompressedByteSize int64
}
// Status is the status of a Span.
type Status struct {
// Code is a status code. Zero indicates success.
//
// If Code will be propagated to Google APIs, it ideally should be a value from
// https://github.com/googleapis/googleapis/blob/master/google/rpc/code.proto .
Code int32
Message string
}

48
vendor/go.opencensus.io/trace/config.go generated vendored Normal file
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@ -0,0 +1,48 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
import (
"sync"
"go.opencensus.io/trace/internal"
)
// Config represents the global tracing configuration.
type Config struct {
// DefaultSampler is the default sampler used when creating new spans.
DefaultSampler Sampler
// IDGenerator is for internal use only.
IDGenerator internal.IDGenerator
}
var configWriteMu sync.Mutex
// ApplyConfig applies changes to the global tracing configuration.
//
// Fields not provided in the given config are going to be preserved.
func ApplyConfig(cfg Config) {
configWriteMu.Lock()
defer configWriteMu.Unlock()
c := *config.Load().(*Config)
if cfg.DefaultSampler != nil {
c.DefaultSampler = cfg.DefaultSampler
}
if cfg.IDGenerator != nil {
c.IDGenerator = cfg.IDGenerator
}
config.Store(&c)
}

53
vendor/go.opencensus.io/trace/doc.go generated vendored Normal file
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@ -0,0 +1,53 @@
// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package trace contains support for OpenCensus distributed tracing.
The following assumes a basic familiarity with OpenCensus concepts.
See http://opencensus.io
Exporting Traces
To export collected tracing data, register at least one exporter. You can use
one of the provided exporters or write your own.
trace.RegisterExporter(exporter)
By default, traces will be sampled relatively rarely. To change the sampling
frequency for your entire program, call ApplyConfig. Use a ProbabilitySampler
to sample a subset of traces, or use AlwaysSample to collect a trace on every run:
trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
Be careful about using trace.AlwaysSample in a production application with
significant traffic: a new trace will be started and exported for every request.
Adding Spans to a Trace
A trace consists of a tree of spans. In Go, the current span is carried in a
context.Context.
It is common to want to capture all the activity of a function call in a span. For
this to work, the function must take a context.Context as a parameter. Add these two
lines to the top of the function:
ctx, span := trace.StartSpan(ctx, "example.com/Run")
defer span.End()
StartSpan will create a new top-level span if the context
doesn't contain another span, otherwise it will create a child span.
*/
package trace // import "go.opencensus.io/trace"

90
vendor/go.opencensus.io/trace/export.go generated vendored Normal file
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@ -0,0 +1,90 @@
// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
import (
"sync"
"sync/atomic"
"time"
)
// Exporter is a type for functions that receive sampled trace spans.
//
// The ExportSpan method should be safe for concurrent use and should return
// quickly; if an Exporter takes a significant amount of time to process a
// SpanData, that work should be done on another goroutine.
//
// The SpanData should not be modified, but a pointer to it can be kept.
type Exporter interface {
ExportSpan(s *SpanData)
}
type exportersMap map[Exporter]struct{}
var (
exporterMu sync.Mutex
exporters atomic.Value
)
// RegisterExporter adds to the list of Exporters that will receive sampled
// trace spans.
//
// Binaries can register exporters, libraries shouldn't register exporters.
func RegisterExporter(e Exporter) {
exporterMu.Lock()
new := make(exportersMap)
if old, ok := exporters.Load().(exportersMap); ok {
for k, v := range old {
new[k] = v
}
}
new[e] = struct{}{}
exporters.Store(new)
exporterMu.Unlock()
}
// UnregisterExporter removes from the list of Exporters the Exporter that was
// registered with the given name.
func UnregisterExporter(e Exporter) {
exporterMu.Lock()
new := make(exportersMap)
if old, ok := exporters.Load().(exportersMap); ok {
for k, v := range old {
new[k] = v
}
}
delete(new, e)
exporters.Store(new)
exporterMu.Unlock()
}
// SpanData contains all the information collected by a Span.
type SpanData struct {
SpanContext
ParentSpanID SpanID
SpanKind int
Name string
StartTime time.Time
// The wall clock time of EndTime will be adjusted to always be offset
// from StartTime by the duration of the span.
EndTime time.Time
// The values of Attributes each have type string, bool, or int64.
Attributes map[string]interface{}
Annotations []Annotation
MessageEvents []MessageEvent
Status
Links []Link
HasRemoteParent bool
}

21
vendor/go.opencensus.io/trace/internal/internal.go generated vendored Normal file
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@ -0,0 +1,21 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package internal provides trace internals.
package internal
type IDGenerator interface {
NewTraceID() [16]byte
NewSpanID() [8]byte
}

108
vendor/go.opencensus.io/trace/propagation/propagation.go generated vendored Normal file
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@ -0,0 +1,108 @@
// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package propagation implements the binary trace context format.
package propagation // import "go.opencensus.io/trace/propagation"
// TODO: link to external spec document.
// BinaryFormat format:
//
// Binary value: <version_id><version_format>
// version_id: 1 byte representing the version id.
//
// For version_id = 0:
//
// version_format: <field><field>
// field_format: <field_id><field_format>
//
// Fields:
//
// TraceId: (field_id = 0, len = 16, default = "0000000000000000") - 16-byte array representing the trace_id.
// SpanId: (field_id = 1, len = 8, default = "00000000") - 8-byte array representing the span_id.
// TraceOptions: (field_id = 2, len = 1, default = "0") - 1-byte array representing the trace_options.
//
// Fields MUST be encoded using the field id order (smaller to higher).
//
// Valid value example:
//
// {0, 0, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 1, 97,
// 98, 99, 100, 101, 102, 103, 104, 2, 1}
//
// version_id = 0;
// trace_id = {64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79}
// span_id = {97, 98, 99, 100, 101, 102, 103, 104};
// trace_options = {1};
import (
"net/http"
"go.opencensus.io/trace"
)
// Binary returns the binary format representation of a SpanContext.
//
// If sc is the zero value, Binary returns nil.
func Binary(sc trace.SpanContext) []byte {
if sc == (trace.SpanContext{}) {
return nil
}
var b [29]byte
copy(b[2:18], sc.TraceID[:])
b[18] = 1
copy(b[19:27], sc.SpanID[:])
b[27] = 2
b[28] = uint8(sc.TraceOptions)
return b[:]
}
// FromBinary returns the SpanContext represented by b.
//
// If b has an unsupported version ID or contains no TraceID, FromBinary
// returns with ok==false.
func FromBinary(b []byte) (sc trace.SpanContext, ok bool) {
if len(b) == 0 || b[0] != 0 {
return trace.SpanContext{}, false
}
b = b[1:]
if len(b) >= 17 && b[0] == 0 {
copy(sc.TraceID[:], b[1:17])
b = b[17:]
} else {
return trace.SpanContext{}, false
}
if len(b) >= 9 && b[0] == 1 {
copy(sc.SpanID[:], b[1:9])
b = b[9:]
}
if len(b) >= 2 && b[0] == 2 {
sc.TraceOptions = trace.TraceOptions(b[1])
}
return sc, true
}
// HTTPFormat implementations propagate span contexts
// in HTTP requests.
//
// SpanContextFromRequest extracts a span context from incoming
// requests.
//
// SpanContextToRequest modifies the given request to include the given
// span context.
type HTTPFormat interface {
SpanContextFromRequest(req *http.Request) (sc trace.SpanContext, ok bool)
SpanContextToRequest(sc trace.SpanContext, req *http.Request)
}
// TODO(jbd): Find a more representative but short name for HTTPFormat.

75
vendor/go.opencensus.io/trace/sampling.go generated vendored Normal file
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@ -0,0 +1,75 @@
// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
import (
"encoding/binary"
)
const defaultSamplingProbability = 1e-4
// Sampler decides whether a trace should be sampled and exported.
type Sampler func(SamplingParameters) SamplingDecision
// SamplingParameters contains the values passed to a Sampler.
type SamplingParameters struct {
ParentContext SpanContext
TraceID TraceID
SpanID SpanID
Name string
HasRemoteParent bool
}
// SamplingDecision is the value returned by a Sampler.
type SamplingDecision struct {
Sample bool
}
// ProbabilitySampler returns a Sampler that samples a given fraction of traces.
//
// It also samples spans whose parents are sampled.
func ProbabilitySampler(fraction float64) Sampler {
if !(fraction >= 0) {
fraction = 0
} else if fraction >= 1 {
return AlwaysSample()
}
traceIDUpperBound := uint64(fraction * (1 << 63))
return Sampler(func(p SamplingParameters) SamplingDecision {
if p.ParentContext.IsSampled() {
return SamplingDecision{Sample: true}
}
x := binary.BigEndian.Uint64(p.TraceID[0:8]) >> 1
return SamplingDecision{Sample: x < traceIDUpperBound}
})
}
// AlwaysSample returns a Sampler that samples every trace.
// Be careful about using this sampler in a production application with
// significant traffic: a new trace will be started and exported for every
// request.
func AlwaysSample() Sampler {
return func(p SamplingParameters) SamplingDecision {
return SamplingDecision{Sample: true}
}
}
// NeverSample returns a Sampler that samples no traces.
func NeverSample() Sampler {
return func(p SamplingParameters) SamplingDecision {
return SamplingDecision{Sample: false}
}
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
import (
"time"
)
// samplePeriod is the minimum time between accepting spans in a single bucket.
const samplePeriod = time.Second
// defaultLatencies contains the default latency bucket bounds.
// TODO: consider defaults, make configurable
var defaultLatencies = [...]time.Duration{
10 * time.Microsecond,
100 * time.Microsecond,
time.Millisecond,
10 * time.Millisecond,
100 * time.Millisecond,
time.Second,
10 * time.Second,
time.Minute,
}
// bucket is a container for a set of spans for a particular error code or latency range.
type bucket struct {
nextTime time.Time // next time we can accept a span
buffer []*SpanData // circular buffer of spans
nextIndex int // location next SpanData should be placed in buffer
overflow bool // whether the circular buffer has wrapped around
}
func makeBucket(bufferSize int) bucket {
return bucket{
buffer: make([]*SpanData, bufferSize),
}
}
// add adds a span to the bucket, if nextTime has been reached.
func (b *bucket) add(s *SpanData) {
if s.EndTime.Before(b.nextTime) {
return
}
if len(b.buffer) == 0 {
return
}
b.nextTime = s.EndTime.Add(samplePeriod)
b.buffer[b.nextIndex] = s
b.nextIndex++
if b.nextIndex == len(b.buffer) {
b.nextIndex = 0
b.overflow = true
}
}
// size returns the number of spans in the bucket.
func (b *bucket) size() int {
if b.overflow {
return len(b.buffer)
}
return b.nextIndex
}
// span returns the ith span in the bucket.
func (b *bucket) span(i int) *SpanData {
if !b.overflow {
return b.buffer[i]
}
if i < len(b.buffer)-b.nextIndex {
return b.buffer[b.nextIndex+i]
}
return b.buffer[b.nextIndex+i-len(b.buffer)]
}
// resize changes the size of the bucket to n, keeping up to n existing spans.
func (b *bucket) resize(n int) {
cur := b.size()
newBuffer := make([]*SpanData, n)
if cur < n {
for i := 0; i < cur; i++ {
newBuffer[i] = b.span(i)
}
b.buffer = newBuffer
b.nextIndex = cur
b.overflow = false
return
}
for i := 0; i < n; i++ {
newBuffer[i] = b.span(i + cur - n)
}
b.buffer = newBuffer
b.nextIndex = 0
b.overflow = true
}
// latencyBucket returns the appropriate bucket number for a given latency.
func latencyBucket(latency time.Duration) int {
i := 0
for i < len(defaultLatencies) && latency >= defaultLatencies[i] {
i++
}
return i
}
// latencyBucketBounds returns the lower and upper bounds for a latency bucket
// number.
//
// The lower bound is inclusive, the upper bound is exclusive (except for the
// last bucket.)
func latencyBucketBounds(index int) (lower time.Duration, upper time.Duration) {
if index == 0 {
return 0, defaultLatencies[index]
}
if index == len(defaultLatencies) {
return defaultLatencies[index-1], 1<<63 - 1
}
return defaultLatencies[index-1], defaultLatencies[index]
}

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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
import (
"sync"
"time"
"go.opencensus.io/internal"
)
const (
maxBucketSize = 100000
defaultBucketSize = 10
)
var (
ssmu sync.RWMutex // protects spanStores
spanStores = make(map[string]*spanStore)
)
// This exists purely to avoid exposing internal methods used by z-Pages externally.
type internalOnly struct{}
func init() {
//TODO(#412): remove
internal.Trace = &internalOnly{}
}
// ReportActiveSpans returns the active spans for the given name.
func (i internalOnly) ReportActiveSpans(name string) []*SpanData {
s := spanStoreForName(name)
if s == nil {
return nil
}
var out []*SpanData
s.mu.Lock()
defer s.mu.Unlock()
for span := range s.active {
out = append(out, span.makeSpanData())
}
return out
}
// ReportSpansByError returns a sample of error spans.
//
// If code is nonzero, only spans with that status code are returned.
func (i internalOnly) ReportSpansByError(name string, code int32) []*SpanData {
s := spanStoreForName(name)
if s == nil {
return nil
}
var out []*SpanData
s.mu.Lock()
defer s.mu.Unlock()
if code != 0 {
if b, ok := s.errors[code]; ok {
for _, sd := range b.buffer {
if sd == nil {
break
}
out = append(out, sd)
}
}
} else {
for _, b := range s.errors {
for _, sd := range b.buffer {
if sd == nil {
break
}
out = append(out, sd)
}
}
}
return out
}
// ConfigureBucketSizes sets the number of spans to keep per latency and error
// bucket for different span names.
func (i internalOnly) ConfigureBucketSizes(bcs []internal.BucketConfiguration) {
for _, bc := range bcs {
latencyBucketSize := bc.MaxRequestsSucceeded
if latencyBucketSize < 0 {
latencyBucketSize = 0
}
if latencyBucketSize > maxBucketSize {
latencyBucketSize = maxBucketSize
}
errorBucketSize := bc.MaxRequestsErrors
if errorBucketSize < 0 {
errorBucketSize = 0
}
if errorBucketSize > maxBucketSize {
errorBucketSize = maxBucketSize
}
spanStoreSetSize(bc.Name, latencyBucketSize, errorBucketSize)
}
}
// ReportSpansPerMethod returns a summary of what spans are being stored for each span name.
func (i internalOnly) ReportSpansPerMethod() map[string]internal.PerMethodSummary {
out := make(map[string]internal.PerMethodSummary)
ssmu.RLock()
defer ssmu.RUnlock()
for name, s := range spanStores {
s.mu.Lock()
p := internal.PerMethodSummary{
Active: len(s.active),
}
for code, b := range s.errors {
p.ErrorBuckets = append(p.ErrorBuckets, internal.ErrorBucketSummary{
ErrorCode: code,
Size: b.size(),
})
}
for i, b := range s.latency {
min, max := latencyBucketBounds(i)
p.LatencyBuckets = append(p.LatencyBuckets, internal.LatencyBucketSummary{
MinLatency: min,
MaxLatency: max,
Size: b.size(),
})
}
s.mu.Unlock()
out[name] = p
}
return out
}
// ReportSpansByLatency returns a sample of successful spans.
//
// minLatency is the minimum latency of spans to be returned.
// maxLatency, if nonzero, is the maximum latency of spans to be returned.
func (i internalOnly) ReportSpansByLatency(name string, minLatency, maxLatency time.Duration) []*SpanData {
s := spanStoreForName(name)
if s == nil {
return nil
}
var out []*SpanData
s.mu.Lock()
defer s.mu.Unlock()
for i, b := range s.latency {
min, max := latencyBucketBounds(i)
if i+1 != len(s.latency) && max <= minLatency {
continue
}
if maxLatency != 0 && maxLatency < min {
continue
}
for _, sd := range b.buffer {
if sd == nil {
break
}
if minLatency != 0 || maxLatency != 0 {
d := sd.EndTime.Sub(sd.StartTime)
if d < minLatency {
continue
}
if maxLatency != 0 && d > maxLatency {
continue
}
}
out = append(out, sd)
}
}
return out
}
// spanStore keeps track of spans stored for a particular span name.
//
// It contains all active spans; a sample of spans for failed requests,
// categorized by error code; and a sample of spans for successful requests,
// bucketed by latency.
type spanStore struct {
mu sync.Mutex // protects everything below.
active map[*Span]struct{}
errors map[int32]*bucket
latency []bucket
maxSpansPerErrorBucket int
}
// newSpanStore creates a span store.
func newSpanStore(name string, latencyBucketSize int, errorBucketSize int) *spanStore {
s := &spanStore{
active: make(map[*Span]struct{}),
latency: make([]bucket, len(defaultLatencies)+1),
maxSpansPerErrorBucket: errorBucketSize,
}
for i := range s.latency {
s.latency[i] = makeBucket(latencyBucketSize)
}
return s
}
// spanStoreForName returns the spanStore for the given name.
//
// It returns nil if it doesn't exist.
func spanStoreForName(name string) *spanStore {
var s *spanStore
ssmu.RLock()
s, _ = spanStores[name]
ssmu.RUnlock()
return s
}
// spanStoreForNameCreateIfNew returns the spanStore for the given name.
//
// It creates it if it didn't exist.
func spanStoreForNameCreateIfNew(name string) *spanStore {
ssmu.RLock()
s, ok := spanStores[name]
ssmu.RUnlock()
if ok {
return s
}
ssmu.Lock()
defer ssmu.Unlock()
s, ok = spanStores[name]
if ok {
return s
}
s = newSpanStore(name, defaultBucketSize, defaultBucketSize)
spanStores[name] = s
return s
}
// spanStoreSetSize resizes the spanStore for the given name.
//
// It creates it if it didn't exist.
func spanStoreSetSize(name string, latencyBucketSize int, errorBucketSize int) {
ssmu.RLock()
s, ok := spanStores[name]
ssmu.RUnlock()
if ok {
s.resize(latencyBucketSize, errorBucketSize)
return
}
ssmu.Lock()
defer ssmu.Unlock()
s, ok = spanStores[name]
if ok {
s.resize(latencyBucketSize, errorBucketSize)
return
}
s = newSpanStore(name, latencyBucketSize, errorBucketSize)
spanStores[name] = s
}
func (s *spanStore) resize(latencyBucketSize int, errorBucketSize int) {
s.mu.Lock()
for i := range s.latency {
s.latency[i].resize(latencyBucketSize)
}
for _, b := range s.errors {
b.resize(errorBucketSize)
}
s.maxSpansPerErrorBucket = errorBucketSize
s.mu.Unlock()
}
// add adds a span to the active bucket of the spanStore.
func (s *spanStore) add(span *Span) {
s.mu.Lock()
s.active[span] = struct{}{}
s.mu.Unlock()
}
// finished removes a span from the active set, and adds a corresponding
// SpanData to a latency or error bucket.
func (s *spanStore) finished(span *Span, sd *SpanData) {
latency := sd.EndTime.Sub(sd.StartTime)
if latency < 0 {
latency = 0
}
code := sd.Status.Code
s.mu.Lock()
delete(s.active, span)
if code == 0 {
s.latency[latencyBucket(latency)].add(sd)
} else {
if s.errors == nil {
s.errors = make(map[int32]*bucket)
}
if b := s.errors[code]; b != nil {
b.add(sd)
} else {
b := makeBucket(s.maxSpansPerErrorBucket)
s.errors[code] = &b
b.add(sd)
}
}
s.mu.Unlock()
}

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// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
// Status codes for use with Span.SetStatus. These correspond to the status
// codes used by gRPC defined here: https://github.com/googleapis/googleapis/blob/master/google/rpc/code.proto
const (
StatusCodeOK = 0
StatusCodeCancelled = 1
StatusCodeUnknown = 2
StatusCodeInvalidArgument = 3
StatusCodeDeadlineExceeded = 4
StatusCodeNotFound = 5
StatusCodeAlreadyExists = 6
StatusCodePermissionDenied = 7
StatusCodeResourceExhausted = 8
StatusCodeFailedPrecondition = 9
StatusCodeAborted = 10
StatusCodeOutOfRange = 11
StatusCodeUnimplemented = 12
StatusCodeInternal = 13
StatusCodeUnavailable = 14
StatusCodeDataLoss = 15
StatusCodeUnauthenticated = 16
)

513
vendor/go.opencensus.io/trace/trace.go generated vendored Normal file
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// Copyright 2017, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package trace
import (
"context"
crand "crypto/rand"
"encoding/binary"
"fmt"
"math/rand"
"sync"
"sync/atomic"
"time"
"go.opencensus.io/internal"
"go.opencensus.io/trace/tracestate"
)
// Span represents a span of a trace. It has an associated SpanContext, and
// stores data accumulated while the span is active.
//
// Ideally users should interact with Spans by calling the functions in this
// package that take a Context parameter.
type Span struct {
// data contains information recorded about the span.
//
// It will be non-nil if we are exporting the span or recording events for it.
// Otherwise, data is nil, and the Span is simply a carrier for the
// SpanContext, so that the trace ID is propagated.
data *SpanData
mu sync.Mutex // protects the contents of *data (but not the pointer value.)
spanContext SpanContext
// spanStore is the spanStore this span belongs to, if any, otherwise it is nil.
*spanStore
endOnce sync.Once
executionTracerTaskEnd func() // ends the execution tracer span
}
// IsRecordingEvents returns true if events are being recorded for this span.
// Use this check to avoid computing expensive annotations when they will never
// be used.
func (s *Span) IsRecordingEvents() bool {
if s == nil {
return false
}
return s.data != nil
}
// TraceOptions contains options associated with a trace span.
type TraceOptions uint32
// IsSampled returns true if the span will be exported.
func (sc SpanContext) IsSampled() bool {
return sc.TraceOptions.IsSampled()
}
// setIsSampled sets the TraceOptions bit that determines whether the span will be exported.
func (sc *SpanContext) setIsSampled(sampled bool) {
if sampled {
sc.TraceOptions |= 1
} else {
sc.TraceOptions &= ^TraceOptions(1)
}
}
// IsSampled returns true if the span will be exported.
func (t TraceOptions) IsSampled() bool {
return t&1 == 1
}
// SpanContext contains the state that must propagate across process boundaries.
//
// SpanContext is not an implementation of context.Context.
// TODO: add reference to external Census docs for SpanContext.
type SpanContext struct {
TraceID TraceID
SpanID SpanID
TraceOptions TraceOptions
Tracestate *tracestate.Tracestate
}
type contextKey struct{}
// FromContext returns the Span stored in a context, or nil if there isn't one.
func FromContext(ctx context.Context) *Span {
s, _ := ctx.Value(contextKey{}).(*Span)
return s
}
// NewContext returns a new context with the given Span attached.
func NewContext(parent context.Context, s *Span) context.Context {
return context.WithValue(parent, contextKey{}, s)
}
// All available span kinds. Span kind must be either one of these values.
const (
SpanKindUnspecified = iota
SpanKindServer
SpanKindClient
)
// StartOptions contains options concerning how a span is started.
type StartOptions struct {
// Sampler to consult for this Span. If provided, it is always consulted.
//
// If not provided, then the behavior differs based on whether
// the parent of this Span is remote, local, or there is no parent.
// In the case of a remote parent or no parent, the
// default sampler (see Config) will be consulted. Otherwise,
// when there is a non-remote parent, no new sampling decision will be made:
// we will preserve the sampling of the parent.
Sampler Sampler
// SpanKind represents the kind of a span. If none is set,
// SpanKindUnspecified is used.
SpanKind int
}
// StartOption apply changes to StartOptions.
type StartOption func(*StartOptions)
// WithSpanKind makes new spans to be created with the given kind.
func WithSpanKind(spanKind int) StartOption {
return func(o *StartOptions) {
o.SpanKind = spanKind
}
}
// WithSampler makes new spans to be be created with a custom sampler.
// Otherwise, the global sampler is used.
func WithSampler(sampler Sampler) StartOption {
return func(o *StartOptions) {
o.Sampler = sampler
}
}
// StartSpan starts a new child span of the current span in the context. If
// there is no span in the context, creates a new trace and span.
//
// Returned context contains the newly created span. You can use it to
// propagate the returned span in process.
func StartSpan(ctx context.Context, name string, o ...StartOption) (context.Context, *Span) {
var opts StartOptions
var parent SpanContext
if p := FromContext(ctx); p != nil {
parent = p.spanContext
}
for _, op := range o {
op(&opts)
}
span := startSpanInternal(name, parent != SpanContext{}, parent, false, opts)
ctx, end := startExecutionTracerTask(ctx, name)
span.executionTracerTaskEnd = end
return NewContext(ctx, span), span
}
// StartSpanWithRemoteParent starts a new child span of the span from the given parent.
//
// If the incoming context contains a parent, it ignores. StartSpanWithRemoteParent is
// preferred for cases where the parent is propagated via an incoming request.
//
// Returned context contains the newly created span. You can use it to
// propagate the returned span in process.
func StartSpanWithRemoteParent(ctx context.Context, name string, parent SpanContext, o ...StartOption) (context.Context, *Span) {
var opts StartOptions
for _, op := range o {
op(&opts)
}
span := startSpanInternal(name, parent != SpanContext{}, parent, true, opts)
ctx, end := startExecutionTracerTask(ctx, name)
span.executionTracerTaskEnd = end
return NewContext(ctx, span), span
}
func startSpanInternal(name string, hasParent bool, parent SpanContext, remoteParent bool, o StartOptions) *Span {
span := &Span{}
span.spanContext = parent
cfg := config.Load().(*Config)
if !hasParent {
span.spanContext.TraceID = cfg.IDGenerator.NewTraceID()
}
span.spanContext.SpanID = cfg.IDGenerator.NewSpanID()
sampler := cfg.DefaultSampler
if !hasParent || remoteParent || o.Sampler != nil {
// If this span is the child of a local span and no Sampler is set in the
// options, keep the parent's TraceOptions.
//
// Otherwise, consult the Sampler in the options if it is non-nil, otherwise
// the default sampler.
if o.Sampler != nil {
sampler = o.Sampler
}
span.spanContext.setIsSampled(sampler(SamplingParameters{
ParentContext: parent,
TraceID: span.spanContext.TraceID,
SpanID: span.spanContext.SpanID,
Name: name,
HasRemoteParent: remoteParent}).Sample)
}
if !internal.LocalSpanStoreEnabled && !span.spanContext.IsSampled() {
return span
}
span.data = &SpanData{
SpanContext: span.spanContext,
StartTime: time.Now(),
SpanKind: o.SpanKind,
Name: name,
HasRemoteParent: remoteParent,
}
if hasParent {
span.data.ParentSpanID = parent.SpanID
}
if internal.LocalSpanStoreEnabled {
var ss *spanStore
ss = spanStoreForNameCreateIfNew(name)
if ss != nil {
span.spanStore = ss
ss.add(span)
}
}
return span
}
// End ends the span.
func (s *Span) End() {
if !s.IsRecordingEvents() {
return
}
s.endOnce.Do(func() {
if s.executionTracerTaskEnd != nil {
s.executionTracerTaskEnd()
}
exp, _ := exporters.Load().(exportersMap)
mustExport := s.spanContext.IsSampled() && len(exp) > 0
if s.spanStore != nil || mustExport {
sd := s.makeSpanData()
sd.EndTime = internal.MonotonicEndTime(sd.StartTime)
if s.spanStore != nil {
s.spanStore.finished(s, sd)
}
if mustExport {
for e := range exp {
e.ExportSpan(sd)
}
}
}
})
}
// makeSpanData produces a SpanData representing the current state of the Span.
// It requires that s.data is non-nil.
func (s *Span) makeSpanData() *SpanData {
var sd SpanData
s.mu.Lock()
sd = *s.data
if s.data.Attributes != nil {
sd.Attributes = make(map[string]interface{})
for k, v := range s.data.Attributes {
sd.Attributes[k] = v
}
}
s.mu.Unlock()
return &sd
}
// SpanContext returns the SpanContext of the span.
func (s *Span) SpanContext() SpanContext {
if s == nil {
return SpanContext{}
}
return s.spanContext
}
// SetName sets the name of the span, if it is recording events.
func (s *Span) SetName(name string) {
if !s.IsRecordingEvents() {
return
}
s.mu.Lock()
s.data.Name = name
s.mu.Unlock()
}
// SetStatus sets the status of the span, if it is recording events.
func (s *Span) SetStatus(status Status) {
if !s.IsRecordingEvents() {
return
}
s.mu.Lock()
s.data.Status = status
s.mu.Unlock()
}
// AddAttributes sets attributes in the span.
//
// Existing attributes whose keys appear in the attributes parameter are overwritten.
func (s *Span) AddAttributes(attributes ...Attribute) {
if !s.IsRecordingEvents() {
return
}
s.mu.Lock()
if s.data.Attributes == nil {
s.data.Attributes = make(map[string]interface{})
}
copyAttributes(s.data.Attributes, attributes)
s.mu.Unlock()
}
// copyAttributes copies a slice of Attributes into a map.
func copyAttributes(m map[string]interface{}, attributes []Attribute) {
for _, a := range attributes {
m[a.key] = a.value
}
}
func (s *Span) lazyPrintfInternal(attributes []Attribute, format string, a ...interface{}) {
now := time.Now()
msg := fmt.Sprintf(format, a...)
var m map[string]interface{}
s.mu.Lock()
if len(attributes) != 0 {
m = make(map[string]interface{})
copyAttributes(m, attributes)
}
s.data.Annotations = append(s.data.Annotations, Annotation{
Time: now,
Message: msg,
Attributes: m,
})
s.mu.Unlock()
}
func (s *Span) printStringInternal(attributes []Attribute, str string) {
now := time.Now()
var a map[string]interface{}
s.mu.Lock()
if len(attributes) != 0 {
a = make(map[string]interface{})
copyAttributes(a, attributes)
}
s.data.Annotations = append(s.data.Annotations, Annotation{
Time: now,
Message: str,
Attributes: a,
})
s.mu.Unlock()
}
// Annotate adds an annotation with attributes.
// Attributes can be nil.
func (s *Span) Annotate(attributes []Attribute, str string) {
if !s.IsRecordingEvents() {
return
}
s.printStringInternal(attributes, str)
}
// Annotatef adds an annotation with attributes.
func (s *Span) Annotatef(attributes []Attribute, format string, a ...interface{}) {
if !s.IsRecordingEvents() {
return
}
s.lazyPrintfInternal(attributes, format, a...)
}
// AddMessageSendEvent adds a message send event to the span.
//
// messageID is an identifier for the message, which is recommended to be
// unique in this span and the same between the send event and the receive
// event (this allows to identify a message between the sender and receiver).
// For example, this could be a sequence id.
func (s *Span) AddMessageSendEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
if !s.IsRecordingEvents() {
return
}
now := time.Now()
s.mu.Lock()
s.data.MessageEvents = append(s.data.MessageEvents, MessageEvent{
Time: now,
EventType: MessageEventTypeSent,
MessageID: messageID,
UncompressedByteSize: uncompressedByteSize,
CompressedByteSize: compressedByteSize,
})
s.mu.Unlock()
}
// AddMessageReceiveEvent adds a message receive event to the span.
//
// messageID is an identifier for the message, which is recommended to be
// unique in this span and the same between the send event and the receive
// event (this allows to identify a message between the sender and receiver).
// For example, this could be a sequence id.
func (s *Span) AddMessageReceiveEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
if !s.IsRecordingEvents() {
return
}
now := time.Now()
s.mu.Lock()
s.data.MessageEvents = append(s.data.MessageEvents, MessageEvent{
Time: now,
EventType: MessageEventTypeRecv,
MessageID: messageID,
UncompressedByteSize: uncompressedByteSize,
CompressedByteSize: compressedByteSize,
})
s.mu.Unlock()
}
// AddLink adds a link to the span.
func (s *Span) AddLink(l Link) {
if !s.IsRecordingEvents() {
return
}
s.mu.Lock()
s.data.Links = append(s.data.Links, l)
s.mu.Unlock()
}
func (s *Span) String() string {
if s == nil {
return "<nil>"
}
if s.data == nil {
return fmt.Sprintf("span %s", s.spanContext.SpanID)
}
s.mu.Lock()
str := fmt.Sprintf("span %s %q", s.spanContext.SpanID, s.data.Name)
s.mu.Unlock()
return str
}
var config atomic.Value // access atomically
func init() {
gen := &defaultIDGenerator{}
// initialize traceID and spanID generators.
var rngSeed int64
for _, p := range []interface{}{
&rngSeed, &gen.traceIDAdd, &gen.nextSpanID, &gen.spanIDInc,
} {
binary.Read(crand.Reader, binary.LittleEndian, p)
}
gen.traceIDRand = rand.New(rand.NewSource(rngSeed))
gen.spanIDInc |= 1
config.Store(&Config{
DefaultSampler: ProbabilitySampler(defaultSamplingProbability),
IDGenerator: gen,
})
}
type defaultIDGenerator struct {
sync.Mutex
// Please keep these as the first fields
// so that these 8 byte fields will be aligned on addresses
// divisible by 8, on both 32-bit and 64-bit machines when
// performing atomic increments and accesses.
// See:
// * https://github.com/census-instrumentation/opencensus-go/issues/587
// * https://github.com/census-instrumentation/opencensus-go/issues/865
// * https://golang.org/pkg/sync/atomic/#pkg-note-BUG
nextSpanID uint64
spanIDInc uint64
traceIDAdd [2]uint64
traceIDRand *rand.Rand
}
// NewSpanID returns a non-zero span ID from a randomly-chosen sequence.
func (gen *defaultIDGenerator) NewSpanID() [8]byte {
var id uint64
for id == 0 {
id = atomic.AddUint64(&gen.nextSpanID, gen.spanIDInc)
}
var sid [8]byte
binary.LittleEndian.PutUint64(sid[:], id)
return sid
}
// NewTraceID returns a non-zero trace ID from a randomly-chosen sequence.
// mu should be held while this function is called.
func (gen *defaultIDGenerator) NewTraceID() [16]byte {
var tid [16]byte
// Construct the trace ID from two outputs of traceIDRand, with a constant
// added to each half for additional entropy.
gen.Lock()
binary.LittleEndian.PutUint64(tid[0:8], gen.traceIDRand.Uint64()+gen.traceIDAdd[0])
binary.LittleEndian.PutUint64(tid[8:16], gen.traceIDRand.Uint64()+gen.traceIDAdd[1])
gen.Unlock()
return tid
}

32
vendor/go.opencensus.io/trace/trace_go11.go generated vendored Normal file
View File

@ -0,0 +1,32 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build go1.11
package trace
import (
"context"
t "runtime/trace"
)
func startExecutionTracerTask(ctx context.Context, name string) (context.Context, func()) {
if !t.IsEnabled() {
// Avoid additional overhead if
// runtime/trace is not enabled.
return ctx, func() {}
}
nctx, task := t.NewTask(ctx, name)
return nctx, task.End
}

25
vendor/go.opencensus.io/trace/trace_nongo11.go generated vendored Normal file
View File

@ -0,0 +1,25 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !go1.11
package trace
import (
"context"
)
func startExecutionTracerTask(ctx context.Context, name string) (context.Context, func()) {
return ctx, func() {}
}

145
vendor/go.opencensus.io/trace/tracestate/tracestate.go generated vendored Normal file
View File

@ -0,0 +1,145 @@
// Copyright 2018, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package tracestate
import (
"fmt"
"regexp"
)
const (
keyMaxSize = 256
valueMaxSize = 256
maxKeyValuePairs = 32
)
const (
keyWithoutVendorFormat = `[a-z][_0-9a-z\-\*\/]{0,255}`
keyWithVendorFormat = `[a-z][_0-9a-z\-\*\/]{0,240}@[a-z][_0-9a-z\-\*\/]{0,13}`
keyFormat = `(` + keyWithoutVendorFormat + `)|(` + keyWithVendorFormat + `)`
valueFormat = `[\x20-\x2b\x2d-\x3c\x3e-\x7e]{0,255}[\x21-\x2b\x2d-\x3c\x3e-\x7e]`
)
var keyValidationRegExp = regexp.MustCompile(`^(` + keyFormat + `)$`)
var valueValidationRegExp = regexp.MustCompile(`^(` + valueFormat + `)$`)
// Tracestate represents tracing-system specific context in a list of key-value pairs. Tracestate allows different
// vendors propagate additional information and inter-operate with their legacy Id formats.
type Tracestate struct {
entries []Entry
}
// Entry represents one key-value pair in a list of key-value pair of Tracestate.
type Entry struct {
// Key is an opaque string up to 256 characters printable. It MUST begin with a lowercase letter,
// and can only contain lowercase letters a-z, digits 0-9, underscores _, dashes -, asterisks *, and
// forward slashes /.
Key string
// Value is an opaque string up to 256 characters printable ASCII RFC0020 characters (i.e., the
// range 0x20 to 0x7E) except comma , and =.
Value string
}
// Entries returns a slice of Entry.
func (ts *Tracestate) Entries() []Entry {
if ts == nil {
return nil
}
return ts.entries
}
func (ts *Tracestate) remove(key string) *Entry {
for index, entry := range ts.entries {
if entry.Key == key {
ts.entries = append(ts.entries[:index], ts.entries[index+1:]...)
return &entry
}
}
return nil
}
func (ts *Tracestate) add(entries []Entry) error {
for _, entry := range entries {
ts.remove(entry.Key)
}
if len(ts.entries)+len(entries) > maxKeyValuePairs {
return fmt.Errorf("adding %d key-value pairs to current %d pairs exceeds the limit of %d",
len(entries), len(ts.entries), maxKeyValuePairs)
}
ts.entries = append(entries, ts.entries...)
return nil
}
func isValid(entry Entry) bool {
return keyValidationRegExp.MatchString(entry.Key) &&
valueValidationRegExp.MatchString(entry.Value)
}
func containsDuplicateKey(entries ...Entry) (string, bool) {
keyMap := make(map[string]int)
for _, entry := range entries {
if _, ok := keyMap[entry.Key]; ok {
return entry.Key, true
}
keyMap[entry.Key] = 1
}
return "", false
}
func areEntriesValid(entries ...Entry) (*Entry, bool) {
for _, entry := range entries {
if !isValid(entry) {
return &entry, false
}
}
return nil, true
}
// New creates a Tracestate object from a parent and/or entries (key-value pair).
// Entries from the parent are copied if present. The entries passed to this function
// are inserted in front of those copied from the parent. If an entry copied from the
// parent contains the same key as one of the entry in entries then the entry copied
// from the parent is removed. See add func.
//
// An error is returned with nil Tracestate if
// 1. one or more entry in entries is invalid.
// 2. two or more entries in the input entries have the same key.
// 3. the number of entries combined from the parent and the input entries exceeds maxKeyValuePairs.
// (duplicate entry is counted only once).
func New(parent *Tracestate, entries ...Entry) (*Tracestate, error) {
if parent == nil && len(entries) == 0 {
return nil, nil
}
if entry, ok := areEntriesValid(entries...); !ok {
return nil, fmt.Errorf("key-value pair {%s, %s} is invalid", entry.Key, entry.Value)
}
if key, duplicate := containsDuplicateKey(entries...); duplicate {
return nil, fmt.Errorf("contains duplicate keys (%s)", key)
}
tracestate := Tracestate{}
if parent != nil && len(parent.entries) > 0 {
tracestate.entries = append([]Entry{}, parent.entries...)
}
err := tracestate.add(entries)
if err != nil {
return nil, err
}
return &tracestate, nil
}

52
vendor/golang.org/x/crypto/openpgp/keys.go generated vendored
View File

@ -333,6 +333,7 @@ func ReadEntity(packets *packet.Reader) (*Entity, error) {
return nil, errors.StructuralError("primary key cannot be used for signatures")
}
var current *Identity
var revocations []*packet.Signature
EachPacket:
for {
@ -348,7 +349,7 @@ EachPacket:
// Make a new Identity object, that we might wind up throwing away.
// We'll only add it if we get a valid self-signature over this
// userID.
current := new(Identity)
current = new(Identity)
current.Name = pkt.Id
current.UserId = pkt
@ -383,9 +384,11 @@ EachPacket:
// TODO: RFC4880 5.2.1 permits signatures
// directly on keys (eg. to bind additional
// revocation keys).
} else if current == nil {
return nil, errors.StructuralError("signature packet found before user id packet")
} else {
current.Signatures = append(current.Signatures, pkt)
}
// Else, ignoring the signature as it does not follow anything
// we would know to attach it to.
case *packet.PrivateKey:
if pkt.IsSubkey == false {
packets.Unread(p)
@ -430,45 +433,26 @@ func addSubkey(e *Entity, packets *packet.Reader, pub *packet.PublicKey, priv *p
var subKey Subkey
subKey.PublicKey = pub
subKey.PrivateKey = priv
for {
p, err := packets.Next()
if err == io.EOF {
break
} else if err != nil {
return io.ErrUnexpectedEOF
}
if err != nil {
return errors.StructuralError("subkey signature invalid: " + err.Error())
}
sig, ok := p.(*packet.Signature)
var ok bool
subKey.Sig, ok = p.(*packet.Signature)
if !ok {
packets.Unread(p)
break
}
if sig.SigType != packet.SigTypeSubkeyBinding && sig.SigType != packet.SigTypeSubkeyRevocation {
return errors.StructuralError("subkey signature with wrong type")
}
if err := e.PrimaryKey.VerifyKeySignature(subKey.PublicKey, sig); err != nil {
return errors.StructuralError("subkey signature invalid: " + err.Error())
}
switch sig.SigType {
case packet.SigTypeSubkeyRevocation:
subKey.Sig = sig
case packet.SigTypeSubkeyBinding:
if subKey.Sig == nil {
subKey.Sig = sig
}
}
}
if subKey.Sig == nil {
return errors.StructuralError("subkey packet not followed by signature")
}
if subKey.Sig.SigType != packet.SigTypeSubkeyBinding && subKey.Sig.SigType != packet.SigTypeSubkeyRevocation {
return errors.StructuralError("subkey signature with wrong type")
}
err = e.PrimaryKey.VerifyKeySignature(subKey.PublicKey, subKey.Sig)
if err != nil {
return errors.StructuralError("subkey signature invalid: " + err.Error())
}
e.Subkeys = append(e.Subkeys, subKey)
return nil
}

4
vendor/golang.org/x/crypto/ssh/keys.go generated vendored
View File

@ -903,8 +903,8 @@ func ParseDSAPrivateKey(der []byte) (*dsa.PrivateKey, error) {
// Implemented based on the documentation at
// https://github.com/openssh/openssh-portable/blob/master/PROTOCOL.key
func parseOpenSSHPrivateKey(key []byte) (crypto.PrivateKey, error) {
const magic = "openssh-key-v1\x00"
if len(key) < len(magic) || string(key[:len(magic)]) != magic {
magic := append([]byte("openssh-key-v1"), 0)
if !bytes.Equal(magic, key[0:len(magic)]) {
return nil, errors.New("ssh: invalid openssh private key format")
}
remaining := key[len(magic):]

10
vendor/golang.org/x/net/html/const.go generated vendored
View File

@ -97,16 +97,8 @@ func isSpecialElement(element *Node) bool {
switch element.Namespace {
case "", "html":
return isSpecialElementMap[element.Data]
case "math":
switch element.Data {
case "mi", "mo", "mn", "ms", "mtext", "annotation-xml":
return true
}
case "svg":
switch element.Data {
case "foreignObject", "desc", "title":
return true
}
return element.Data == "foreignObject"
}
return false
}

12
vendor/golang.org/x/net/html/parse.go generated vendored
View File

@ -470,10 +470,6 @@ func (p *parser) resetInsertionMode() {
case a.Table:
p.im = inTableIM
case a.Template:
// TODO: remove this divergence from the HTML5 spec.
if n.Namespace != "" {
continue
}
p.im = p.templateStack.top()
case a.Head:
// TODO: remove this divergence from the HTML5 spec.
@ -988,14 +984,6 @@ func inBodyIM(p *parser) bool {
p.acknowledgeSelfClosingTag()
p.popUntil(buttonScope, a.P)
p.parseImpliedToken(StartTagToken, a.Form, a.Form.String())
if p.form == nil {
// NOTE: The 'isindex' element has been removed,
// and the 'template' element has not been designed to be
// collaborative with the index element.
//
// Ignore the token.
return true
}
if action != "" {
p.form.Attr = []Attribute{{Key: "action", Val: action}}
}

5
vendor/golang.org/x/oauth2/CONTRIBUTING.md generated vendored
View File

@ -4,7 +4,6 @@ Go is an open source project.
It is the work of hundreds of contributors. We appreciate your help!
## Filing issues
When [filing an issue](https://github.com/golang/oauth2/issues), make sure to answer these five questions:
@ -23,9 +22,5 @@ The gophers there will answer or ask you to file an issue if you've tripped over
Please read the [Contribution Guidelines](https://golang.org/doc/contribute.html)
before sending patches.
**We do not accept GitHub pull requests**
(we use [Gerrit](https://code.google.com/p/gerrit/) instead for code review).
Unless otherwise noted, the Go source files are distributed under
the BSD-style license found in the LICENSE file.

25
vendor/golang.org/x/oauth2/client_appengine.go generated vendored
View File

@ -1,25 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build appengine
// App Engine hooks.
package oauth2
import (
"net/http"
"golang.org/x/net/context"
"golang.org/x/oauth2/internal"
"google.golang.org/appengine/urlfetch"
)
func init() {
internal.RegisterContextClientFunc(contextClientAppEngine)
}
func contextClientAppEngine(ctx context.Context) (*http.Client, error) {
return urlfetch.Client(ctx), nil
}

68
vendor/golang.org/x/oauth2/google/default.go generated vendored
View File

@ -18,20 +18,6 @@ import (
"golang.org/x/oauth2"
)
// DefaultCredentials holds "Application Default Credentials".
// For more details, see:
// https://developers.google.com/accounts/docs/application-default-credentials
type DefaultCredentials struct {
ProjectID string // may be empty
TokenSource oauth2.TokenSource
// JSON contains the raw bytes from a JSON credentials file.
// This field may be nil if authentication is provided by the
// environment and not with a credentials file, e.g. when code is
// running on Google Cloud Platform.
JSON []byte
}
// DefaultClient returns an HTTP Client that uses the
// DefaultTokenSource to obtain authentication credentials.
func DefaultClient(ctx context.Context, scope ...string) (*http.Client, error) {
@ -53,25 +39,12 @@ func DefaultTokenSource(ctx context.Context, scope ...string) (oauth2.TokenSourc
return creds.TokenSource, nil
}
// FindDefaultCredentials searches for "Application Default Credentials".
//
// It looks for credentials in the following places,
// preferring the first location found:
//
// 1. A JSON file whose path is specified by the
// GOOGLE_APPLICATION_CREDENTIALS environment variable.
// 2. A JSON file in a location known to the gcloud command-line tool.
// On Windows, this is %APPDATA%/gcloud/application_default_credentials.json.
// On other systems, $HOME/.config/gcloud/application_default_credentials.json.
// 3. On Google App Engine it uses the appengine.AccessToken function.
// 4. On Google Compute Engine and Google App Engine Managed VMs, it fetches
// credentials from the metadata server.
// (In this final case any provided scopes are ignored.)
func FindDefaultCredentials(ctx context.Context, scope ...string) (*DefaultCredentials, error) {
// Common implementation for FindDefaultCredentials.
func findDefaultCredentials(ctx context.Context, scopes []string) (*DefaultCredentials, error) {
// First, try the environment variable.
const envVar = "GOOGLE_APPLICATION_CREDENTIALS"
if filename := os.Getenv(envVar); filename != "" {
creds, err := readCredentialsFile(ctx, filename, scope)
creds, err := readCredentialsFile(ctx, filename, scopes)
if err != nil {
return nil, fmt.Errorf("google: error getting credentials using %v environment variable: %v", envVar, err)
}
@ -80,7 +53,7 @@ func FindDefaultCredentials(ctx context.Context, scope ...string) (*DefaultCrede
// Second, try a well-known file.
filename := wellKnownFile()
if creds, err := readCredentialsFile(ctx, filename, scope); err == nil {
if creds, err := readCredentialsFile(ctx, filename, scopes); err == nil {
return creds, nil
} else if !os.IsNotExist(err) {
return nil, fmt.Errorf("google: error getting credentials using well-known file (%v): %v", filename, err)
@ -90,7 +63,7 @@ func FindDefaultCredentials(ctx context.Context, scope ...string) (*DefaultCrede
if appengineTokenFunc != nil && !appengineFlex {
return &DefaultCredentials{
ProjectID: appengineAppIDFunc(ctx),
TokenSource: AppEngineTokenSource(ctx, scope...),
TokenSource: AppEngineTokenSource(ctx, scopes...),
}, nil
}
@ -108,6 +81,23 @@ func FindDefaultCredentials(ctx context.Context, scope ...string) (*DefaultCrede
return nil, fmt.Errorf("google: could not find default credentials. See %v for more information.", url)
}
// Common implementation for CredentialsFromJSON.
func credentialsFromJSON(ctx context.Context, jsonData []byte, scopes []string) (*DefaultCredentials, error) {
var f credentialsFile
if err := json.Unmarshal(jsonData, &f); err != nil {
return nil, err
}
ts, err := f.tokenSource(ctx, append([]string(nil), scopes...))
if err != nil {
return nil, err
}
return &DefaultCredentials{
ProjectID: f.ProjectID,
TokenSource: ts,
JSON: jsonData,
}, nil
}
func wellKnownFile() string {
const f = "application_default_credentials.json"
if runtime.GOOS == "windows" {
@ -121,17 +111,5 @@ func readCredentialsFile(ctx context.Context, filename string, scopes []string)
if err != nil {
return nil, err
}
var f credentialsFile
if err := json.Unmarshal(b, &f); err != nil {
return nil, err
}
ts, err := f.tokenSource(ctx, append([]string(nil), scopes...))
if err != nil {
return nil, err
}
return &DefaultCredentials{
ProjectID: f.ProjectID,
TokenSource: ts,
JSON: b,
}, nil
return CredentialsFromJSON(ctx, b, scopes...)
}

42
vendor/golang.org/x/oauth2/google/doc_go19.go generated vendored Normal file
View File

@ -0,0 +1,42 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.9
// Package google provides support for making OAuth2 authorized and authenticated
// HTTP requests to Google APIs. It supports the Web server flow, client-side
// credentials, service accounts, Google Compute Engine service accounts, and Google
// App Engine service accounts.
//
// A brief overview of the package follows. For more information, please read
// https://developers.google.com/accounts/docs/OAuth2
// and
// https://developers.google.com/accounts/docs/application-default-credentials.
//
// OAuth2 Configs
//
// Two functions in this package return golang.org/x/oauth2.Config values from Google credential
// data. Google supports two JSON formats for OAuth2 credentials: one is handled by ConfigFromJSON,
// the other by JWTConfigFromJSON. The returned Config can be used to obtain a TokenSource or
// create an http.Client.
//
//
// Credentials
//
// The Credentials type represents Google credentials, including Application Default
// Credentials.
//
// Use FindDefaultCredentials to obtain Application Default Credentials.
// FindDefaultCredentials looks in some well-known places for a credentials file, and
// will call AppEngineTokenSource or ComputeTokenSource as needed.
//
// DefaultClient and DefaultTokenSource are convenience methods. They first call FindDefaultCredentials,
// then use the credentials to construct an http.Client or an oauth2.TokenSource.
//
// Use CredentialsFromJSON to obtain credentials from either of the two JSON formats
// described in OAuth2 Configs, above. The TokenSource in the returned value is the
// same as the one obtained from the oauth2.Config returned from ConfigFromJSON or
// JWTConfigFromJSON, but the Credentials may contain additional information
// that is useful is some circumstances.
package google // import "golang.org/x/oauth2/google"

43
vendor/golang.org/x/oauth2/google/doc_not_go19.go generated vendored Normal file
View File

@ -0,0 +1,43 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.9
// Package google provides support for making OAuth2 authorized and authenticated
// HTTP requests to Google APIs. It supports the Web server flow, client-side
// credentials, service accounts, Google Compute Engine service accounts, and Google
// App Engine service accounts.
//
// A brief overview of the package follows. For more information, please read
// https://developers.google.com/accounts/docs/OAuth2
// and
// https://developers.google.com/accounts/docs/application-default-credentials.
//
// OAuth2 Configs
//
// Two functions in this package return golang.org/x/oauth2.Config values from Google credential
// data. Google supports two JSON formats for OAuth2 credentials: one is handled by ConfigFromJSON,
// the other by JWTConfigFromJSON. The returned Config can be used to obtain a TokenSource or
// create an http.Client.
//
//
// Credentials
//
// The DefaultCredentials type represents Google Application Default Credentials, as
// well as other forms of credential.
//
// Use FindDefaultCredentials to obtain Application Default Credentials.
// FindDefaultCredentials looks in some well-known places for a credentials file, and
// will call AppEngineTokenSource or ComputeTokenSource as needed.
//
// DefaultClient and DefaultTokenSource are convenience methods. They first call FindDefaultCredentials,
// then use the credentials to construct an http.Client or an oauth2.TokenSource.
//
// Use CredentialsFromJSON to obtain credentials from either of the two JSON
// formats described in OAuth2 Configs, above. (The DefaultCredentials returned may
// not be "Application Default Credentials".) The TokenSource in the returned value
// is the same as the one obtained from the oauth2.Config returned from
// ConfigFromJSON or JWTConfigFromJSON, but the DefaultCredentials may contain
// additional information that is useful is some circumstances.
package google // import "golang.org/x/oauth2/google"

57
vendor/golang.org/x/oauth2/google/go19.go generated vendored Normal file
View File

@ -0,0 +1,57 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.9
package google
import (
"golang.org/x/net/context"
"golang.org/x/oauth2"
)
// Credentials holds Google credentials, including "Application Default Credentials".
// For more details, see:
// https://developers.google.com/accounts/docs/application-default-credentials
type Credentials struct {
ProjectID string // may be empty
TokenSource oauth2.TokenSource
// JSON contains the raw bytes from a JSON credentials file.
// This field may be nil if authentication is provided by the
// environment and not with a credentials file, e.g. when code is
// running on Google Cloud Platform.
JSON []byte
}
// DefaultCredentials is the old name of Credentials.
//
// Deprecated: use Credentials instead.
type DefaultCredentials = Credentials
// FindDefaultCredentials searches for "Application Default Credentials".
//
// It looks for credentials in the following places,
// preferring the first location found:
//
// 1. A JSON file whose path is specified by the
// GOOGLE_APPLICATION_CREDENTIALS environment variable.
// 2. A JSON file in a location known to the gcloud command-line tool.
// On Windows, this is %APPDATA%/gcloud/application_default_credentials.json.
// On other systems, $HOME/.config/gcloud/application_default_credentials.json.
// 3. On Google App Engine it uses the appengine.AccessToken function.
// 4. On Google Compute Engine and Google App Engine Managed VMs, it fetches
// credentials from the metadata server.
// (In this final case any provided scopes are ignored.)
func FindDefaultCredentials(ctx context.Context, scopes ...string) (*Credentials, error) {
return findDefaultCredentials(ctx, scopes)
}
// CredentialsFromJSON obtains Google credentials from a JSON value. The JSON can
// represent either a Google Developers Console client_credentials.json file (as in
// ConfigFromJSON) or a Google Developers service account key file (as in
// JWTConfigFromJSON).
func CredentialsFromJSON(ctx context.Context, jsonData []byte, scopes ...string) (*Credentials, error) {
return credentialsFromJSON(ctx, jsonData, scopes)
}

12
vendor/golang.org/x/oauth2/google/google.go generated vendored
View File

@ -2,17 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package google provides support for making OAuth2 authorized and
// authenticated HTTP requests to Google APIs.
// It supports the Web server flow, client-side credentials, service accounts,
// Google Compute Engine service accounts, and Google App Engine service
// accounts.
//
// For more information, please read
// https://developers.google.com/accounts/docs/OAuth2
// and
// https://developers.google.com/accounts/docs/application-default-credentials.
package google // import "golang.org/x/oauth2/google"
package google
import (
"encoding/json"

54
vendor/golang.org/x/oauth2/google/not_go19.go generated vendored Normal file
View File

@ -0,0 +1,54 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.9
package google
import (
"golang.org/x/net/context"
"golang.org/x/oauth2"
)
// DefaultCredentials holds Google credentials, including "Application Default Credentials".
// For more details, see:
// https://developers.google.com/accounts/docs/application-default-credentials
type DefaultCredentials struct {
ProjectID string // may be empty
TokenSource oauth2.TokenSource
// JSON contains the raw bytes from a JSON credentials file.
// This field may be nil if authentication is provided by the
// environment and not with a credentials file, e.g. when code is
// running on Google Cloud Platform.
JSON []byte
}
// FindDefaultCredentials searches for "Application Default Credentials".
//
// It looks for credentials in the following places,
// preferring the first location found:
//
// 1. A JSON file whose path is specified by the
// GOOGLE_APPLICATION_CREDENTIALS environment variable.
// 2. A JSON file in a location known to the gcloud command-line tool.
// On Windows, this is %APPDATA%/gcloud/application_default_credentials.json.
// On other systems, $HOME/.config/gcloud/application_default_credentials.json.
// 3. On Google App Engine it uses the appengine.AccessToken function.
// 4. On Google Compute Engine and Google App Engine Managed VMs, it fetches
// credentials from the metadata server.
// (In this final case any provided scopes are ignored.)
func FindDefaultCredentials(ctx context.Context, scopes ...string) (*DefaultCredentials, error) {
return findDefaultCredentials(ctx, scopes)
}
// CredentialsFromJSON obtains Google credentials from a JSON value. The JSON can
// represent either a Google Developers Console client_credentials.json file (as in
// ConfigFromJSON) or a Google Developers service account key file (as in
// JWTConfigFromJSON).
//
// Note: despite the name, the returned credentials may not be Application Default Credentials.
func CredentialsFromJSON(ctx context.Context, jsonData []byte, scopes ...string) (*DefaultCredentials, error) {
return credentialsFromJSON(ctx, jsonData, scopes)
}

33
vendor/golang.org/x/oauth2/google/sdk.go generated vendored
View File

@ -5,9 +5,11 @@
package google
import (
"bufio"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"os"
"os/user"
@ -18,7 +20,6 @@ import (
"golang.org/x/net/context"
"golang.org/x/oauth2"
"golang.org/x/oauth2/internal"
)
type sdkCredentials struct {
@ -76,7 +77,7 @@ func NewSDKConfig(account string) (*SDKConfig, error) {
return nil, fmt.Errorf("oauth2/google: failed to load SDK properties: %v", err)
}
defer f.Close()
ini, err := internal.ParseINI(f)
ini, err := parseINI(f)
if err != nil {
return nil, fmt.Errorf("oauth2/google: failed to parse SDK properties %q: %v", propertiesPath, err)
}
@ -146,6 +147,34 @@ func (c *SDKConfig) Scopes() []string {
return c.conf.Scopes
}
func parseINI(ini io.Reader) (map[string]map[string]string, error) {
result := map[string]map[string]string{
"": {}, // root section
}
scanner := bufio.NewScanner(ini)
currentSection := ""
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if strings.HasPrefix(line, ";") {
// comment.
continue
}
if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
currentSection = strings.TrimSpace(line[1 : len(line)-1])
result[currentSection] = map[string]string{}
continue
}
parts := strings.SplitN(line, "=", 2)
if len(parts) == 2 && parts[0] != "" {
result[currentSection][strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
}
}
if err := scanner.Err(); err != nil {
return nil, fmt.Errorf("error scanning ini: %v", err)
}
return result, nil
}
// sdkConfigPath tries to guess where the gcloud config is located.
// It can be overridden during tests.
var sdkConfigPath = func() (string, error) {

13
vendor/golang.org/x/oauth2/internal/client_appengine.go generated vendored Normal file
View File

@ -0,0 +1,13 @@
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build appengine
package internal
import "google.golang.org/appengine/urlfetch"
func init() {
appengineClientHook = urlfetch.Client
}

38
vendor/golang.org/x/oauth2/internal/oauth2.go generated vendored
View File

@ -5,14 +5,11 @@
package internal
import (
"bufio"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"errors"
"fmt"
"io"
"strings"
)
// ParseKey converts the binary contents of a private key file
@ -38,38 +35,3 @@ func ParseKey(key []byte) (*rsa.PrivateKey, error) {
}
return parsed, nil
}
func ParseINI(ini io.Reader) (map[string]map[string]string, error) {
result := map[string]map[string]string{
"": {}, // root section
}
scanner := bufio.NewScanner(ini)
currentSection := ""
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
if strings.HasPrefix(line, ";") {
// comment.
continue
}
if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
currentSection = strings.TrimSpace(line[1 : len(line)-1])
result[currentSection] = map[string]string{}
continue
}
parts := strings.SplitN(line, "=", 2)
if len(parts) == 2 && parts[0] != "" {
result[currentSection][strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
}
}
if err := scanner.Err(); err != nil {
return nil, fmt.Errorf("error scanning ini: %v", err)
}
return result, nil
}
func CondVal(v string) []string {
if v == "" {
return nil
}
return []string{v}
}

38
vendor/golang.org/x/oauth2/internal/token.go generated vendored
View File

@ -6,6 +6,7 @@ package internal
import (
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
@ -20,7 +21,7 @@ import (
"golang.org/x/net/context/ctxhttp"
)
// Token represents the crendentials used to authorize
// Token represents the credentials used to authorize
// the requests to access protected resources on the OAuth 2.0
// provider's backend.
//
@ -100,12 +101,15 @@ var brokenAuthHeaderProviders = []string{
"https://api.pushbullet.com/",
"https://api.soundcloud.com/",
"https://api.twitch.tv/",
"https://id.twitch.tv/",
"https://app.box.com/",
"https://api.box.com/",
"https://connect.stripe.com/",
"https://graph.facebook.com", // see https://github.com/golang/oauth2/issues/214
"https://login.mailchimp.com/",
"https://login.microsoftonline.com/",
"https://login.salesforce.com/",
"https://login.windows.net",
"https://login.live.com/",
"https://oauth.sandbox.trainingpeaks.com/",
"https://oauth.trainingpeaks.com/",
"https://oauth.vk.com/",
@ -122,10 +126,17 @@ var brokenAuthHeaderProviders = []string{
"https://api.patreon.com/",
"https://sandbox.codeswholesale.com/oauth/token",
"https://api.sipgate.com/v1/authorization/oauth",
"https://api.medium.com/v1/tokens",
"https://log.finalsurge.com/oauth/token",
"https://multisport.todaysplan.com.au/rest/oauth/access_token",
"https://whats.todaysplan.com.au/rest/oauth/access_token",
"https://stackoverflow.com/oauth/access_token",
"https://account.health.nokia.com",
}
// brokenAuthHeaderDomains lists broken providers that issue dynamic endpoints.
var brokenAuthHeaderDomains = []string{
".auth0.com",
".force.com",
".myshopify.com",
".okta.com",
@ -168,10 +179,6 @@ func providerAuthHeaderWorks(tokenURL string) bool {
}
func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string, v url.Values) (*Token, error) {
hc, err := ContextClient(ctx)
if err != nil {
return nil, err
}
bustedAuth := !providerAuthHeaderWorks(tokenURL)
if bustedAuth {
if clientID != "" {
@ -189,7 +196,7 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
if !bustedAuth {
req.SetBasicAuth(url.QueryEscape(clientID), url.QueryEscape(clientSecret))
}
r, err := ctxhttp.Do(ctx, hc, req)
r, err := ctxhttp.Do(ctx, ContextClient(ctx), req)
if err != nil {
return nil, err
}
@ -199,7 +206,10 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
}
if code := r.StatusCode; code < 200 || code > 299 {
return nil, fmt.Errorf("oauth2: cannot fetch token: %v\nResponse: %s", r.Status, body)
return nil, &RetrieveError{
Response: r,
Body: body,
}
}
var token *Token
@ -246,5 +256,17 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
if token.RefreshToken == "" {
token.RefreshToken = v.Get("refresh_token")
}
if token.AccessToken == "" {
return token, errors.New("oauth2: server response missing access_token")
}
return token, nil
}
type RetrieveError struct {
Response *http.Response
Body []byte
}
func (r *RetrieveError) Error() string {
return fmt.Sprintf("oauth2: cannot fetch token: %v\nResponse: %s", r.Response.Status, r.Body)
}

46
vendor/golang.org/x/oauth2/internal/transport.go generated vendored
View File

@ -19,50 +19,16 @@ var HTTPClient ContextKey
// because nobody else can create a ContextKey, being unexported.
type ContextKey struct{}
// ContextClientFunc is a func which tries to return an *http.Client
// given a Context value. If it returns an error, the search stops
// with that error. If it returns (nil, nil), the search continues
// down the list of registered funcs.
type ContextClientFunc func(context.Context) (*http.Client, error)
var appengineClientHook func(context.Context) *http.Client
var contextClientFuncs []ContextClientFunc
func RegisterContextClientFunc(fn ContextClientFunc) {
contextClientFuncs = append(contextClientFuncs, fn)
}
func ContextClient(ctx context.Context) (*http.Client, error) {
func ContextClient(ctx context.Context) *http.Client {
if ctx != nil {
if hc, ok := ctx.Value(HTTPClient).(*http.Client); ok {
return hc, nil
return hc
}
}
for _, fn := range contextClientFuncs {
c, err := fn(ctx)
if err != nil {
return nil, err
if appengineClientHook != nil {
return appengineClientHook(ctx)
}
if c != nil {
return c, nil
}
}
return http.DefaultClient, nil
}
func ContextTransport(ctx context.Context) http.RoundTripper {
hc, err := ContextClient(ctx)
// This is a rare error case (somebody using nil on App Engine).
if err != nil {
return ErrorTransport{err}
}
return hc.Transport
}
// ErrorTransport returns the specified error on RoundTrip.
// This RoundTripper should be used in rare error cases where
// error handling can be postponed to response handling time.
type ErrorTransport struct{ Err error }
func (t ErrorTransport) RoundTrip(*http.Request) (*http.Response, error) {
return nil, t.Err
return http.DefaultClient
}

5
vendor/golang.org/x/oauth2/jwt/jwt.go generated vendored
View File

@ -124,7 +124,10 @@ func (js jwtSource) Token() (*oauth2.Token, error) {
return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
}
if c := resp.StatusCode; c < 200 || c > 299 {
return nil, fmt.Errorf("oauth2: cannot fetch token: %v\nResponse: %s", resp.Status, body)
return nil, &oauth2.RetrieveError{
Response: resp,
Body: body,
}
}
// tokenRes is the JSON response body.
var tokenRes struct {

54
vendor/golang.org/x/oauth2/oauth2.go generated vendored
View File

@ -3,7 +3,8 @@
// license that can be found in the LICENSE file.
// Package oauth2 provides support for making
// OAuth2 authorized and authenticated HTTP requests.
// OAuth2 authorized and authenticated HTTP requests,
// as specified in RFC 6749.
// It can additionally grant authorization with Bearer JWT.
package oauth2 // import "golang.org/x/oauth2"
@ -117,21 +118,30 @@ func SetAuthURLParam(key, value string) AuthCodeOption {
// that asks for permissions for the required scopes explicitly.
//
// State is a token to protect the user from CSRF attacks. You must
// always provide a non-zero string and validate that it matches the
// always provide a non-empty string and validate that it matches the
// the state query parameter on your redirect callback.
// See http://tools.ietf.org/html/rfc6749#section-10.12 for more info.
//
// Opts may include AccessTypeOnline or AccessTypeOffline, as well
// as ApprovalForce.
// It can also be used to pass the PKCE challange.
// See https://www.oauth.com/oauth2-servers/pkce/ for more info.
func (c *Config) AuthCodeURL(state string, opts ...AuthCodeOption) string {
var buf bytes.Buffer
buf.WriteString(c.Endpoint.AuthURL)
v := url.Values{
"response_type": {"code"},
"client_id": {c.ClientID},
"redirect_uri": internal.CondVal(c.RedirectURL),
"scope": internal.CondVal(strings.Join(c.Scopes, " ")),
"state": internal.CondVal(state),
}
if c.RedirectURL != "" {
v.Set("redirect_uri", c.RedirectURL)
}
if len(c.Scopes) > 0 {
v.Set("scope", strings.Join(c.Scopes, " "))
}
if state != "" {
// TODO(light): Docs say never to omit state; don't allow empty.
v.Set("state", state)
}
for _, opt := range opts {
opt.setValue(v)
@ -157,12 +167,15 @@ func (c *Config) AuthCodeURL(state string, opts ...AuthCodeOption) string {
// The HTTP client to use is derived from the context.
// If nil, http.DefaultClient is used.
func (c *Config) PasswordCredentialsToken(ctx context.Context, username, password string) (*Token, error) {
return retrieveToken(ctx, c, url.Values{
v := url.Values{
"grant_type": {"password"},
"username": {username},
"password": {password},
"scope": internal.CondVal(strings.Join(c.Scopes, " ")),
})
}
if len(c.Scopes) > 0 {
v.Set("scope", strings.Join(c.Scopes, " "))
}
return retrieveToken(ctx, c, v)
}
// Exchange converts an authorization code into a token.
@ -175,12 +188,21 @@ func (c *Config) PasswordCredentialsToken(ctx context.Context, username, passwor
//
// The code will be in the *http.Request.FormValue("code"). Before
// calling Exchange, be sure to validate FormValue("state").
func (c *Config) Exchange(ctx context.Context, code string) (*Token, error) {
return retrieveToken(ctx, c, url.Values{
//
// Opts may include the PKCE verifier code if previously used in AuthCodeURL.
// See https://www.oauth.com/oauth2-servers/pkce/ for more info.
func (c *Config) Exchange(ctx context.Context, code string, opts ...AuthCodeOption) (*Token, error) {
v := url.Values{
"grant_type": {"authorization_code"},
"code": {code},
"redirect_uri": internal.CondVal(c.RedirectURL),
})
}
if c.RedirectURL != "" {
v.Set("redirect_uri", c.RedirectURL)
}
for _, opt := range opts {
opt.setValue(v)
}
return retrieveToken(ctx, c, v)
}
// Client returns an HTTP client using the provided token.
@ -300,15 +322,11 @@ var HTTPClient internal.ContextKey
// packages.
func NewClient(ctx context.Context, src TokenSource) *http.Client {
if src == nil {
c, err := internal.ContextClient(ctx)
if err != nil {
return &http.Client{Transport: internal.ErrorTransport{Err: err}}
}
return c
return internal.ContextClient(ctx)
}
return &http.Client{
Transport: &Transport{
Base: internal.ContextTransport(ctx),
Base: internal.ContextClient(ctx).Transport,
Source: ReuseTokenSource(nil, src),
},
}

21
vendor/golang.org/x/oauth2/token.go generated vendored
View File

@ -5,6 +5,7 @@
package oauth2
import (
"fmt"
"net/http"
"net/url"
"strconv"
@ -20,7 +21,7 @@ import (
// expirations due to client-server time mismatches.
const expiryDelta = 10 * time.Second
// Token represents the crendentials used to authorize
// Token represents the credentials used to authorize
// the requests to access protected resources on the OAuth 2.0
// provider's backend.
//
@ -123,7 +124,7 @@ func (t *Token) expired() bool {
if t.Expiry.IsZero() {
return false
}
return t.Expiry.Add(-expiryDelta).Before(time.Now())
return t.Expiry.Round(0).Add(-expiryDelta).Before(time.Now())
}
// Valid reports whether t is non-nil, has an AccessToken, and is not expired.
@ -152,7 +153,23 @@ func tokenFromInternal(t *internal.Token) *Token {
func retrieveToken(ctx context.Context, c *Config, v url.Values) (*Token, error) {
tk, err := internal.RetrieveToken(ctx, c.ClientID, c.ClientSecret, c.Endpoint.TokenURL, v)
if err != nil {
if rErr, ok := err.(*internal.RetrieveError); ok {
return nil, (*RetrieveError)(rErr)
}
return nil, err
}
return tokenFromInternal(tk), nil
}
// RetrieveError is the error returned when the token endpoint returns a
// non-2XX HTTP status code.
type RetrieveError struct {
Response *http.Response
// Body is the body that was consumed by reading Response.Body.
// It may be truncated.
Body []byte
}
func (r *RetrieveError) Error() string {
return fmt.Sprintf("oauth2: cannot fetch token: %v\nResponse: %s", r.Response.Status, r.Body)
}

16
vendor/golang.org/x/oauth2/transport.go generated vendored
View File

@ -31,9 +31,17 @@ type Transport struct {
}
// RoundTrip authorizes and authenticates the request with an
// access token. If no token exists or token is expired,
// tries to refresh/fetch a new token.
// access token from Transport's Source.
func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
reqBodyClosed := false
if req.Body != nil {
defer func() {
if !reqBodyClosed {
req.Body.Close()
}
}()
}
if t.Source == nil {
return nil, errors.New("oauth2: Transport's Source is nil")
}
@ -46,6 +54,10 @@ func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
token.SetAuthHeader(req2)
t.setModReq(req, req2)
res, err := t.base().RoundTrip(req2)
// req.Body is assumed to have been closed by the base RoundTripper.
reqBodyClosed = true
if err != nil {
t.setModReq(req, nil)
return nil, err

12
vendor/golang.org/x/sys/unix/dev_aix_ppc.go generated vendored
View File

@ -6,7 +6,17 @@
// +build ppc
// Functions to access/create device major and minor numbers matching the
// encoding used by AIX.
// encoding used by the Linux kernel and glibc.
//
// The information below is extracted and adapted from bits/sysmacros.h in the
// glibc sources:
//
// dev_t in glibc is 64-bit, with 32-bit major and minor numbers. glibc's
// default encoding is MMMM Mmmm mmmM MMmm, where M is a hex digit of the major
// number and m is a hex digit of the minor number. This is backward compatible
// with legacy systems where dev_t is 16 bits wide, encoded as MMmm. It is also
// backward compatible with the Linux kernel, which for some architectures uses
// 32-bit dev_t, encoded as mmmM MMmm.
package unix

12
vendor/golang.org/x/sys/unix/dev_aix_ppc64.go generated vendored
View File

@ -6,7 +6,17 @@
// +build ppc64
// Functions to access/create device major and minor numbers matching the
// encoding used AIX.
// encoding used by the Linux kernel and glibc.
//
// The information below is extracted and adapted from bits/sysmacros.h in the
// glibc sources:
//
// dev_t in glibc is 64-bit, with 32-bit major and minor numbers. glibc's
// default encoding is MMMM Mmmm mmmM MMmm, where M is a hex digit of the major
// number and m is a hex digit of the minor number. This is backward compatible
// with legacy systems where dev_t is 16 bits wide, encoded as MMmm. It is also
// backward compatible with the Linux kernel, which for some architectures uses
// 32-bit dev_t, encoded as mmmM MMmm.
package unix

2
vendor/golang.org/x/sys/unix/ioctl.go generated vendored
View File

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
package unix

21
vendor/golang.org/x/sys/unix/mkerrors.sh generated vendored
View File

@ -46,7 +46,6 @@ includes_AIX='
#include <sys/stropts.h>
#include <sys/mman.h>
#include <sys/poll.h>
#include <sys/termio.h>
#include <termios.h>
#include <fcntl.h>
@ -87,7 +86,6 @@ includes_DragonFly='
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#include <net/bpf.h>
@ -195,7 +193,6 @@ struct ltchars {
#include <linux/fs.h>
#include <linux/keyctl.h>
#include <linux/magic.h>
#include <linux/memfd.h>
#include <linux/netfilter/nfnetlink.h>
#include <linux/netlink.h>
#include <linux/net_namespace.h>
@ -217,7 +214,6 @@ struct ltchars {
#include <linux/watchdog.h>
#include <linux/hdreg.h>
#include <linux/rtc.h>
#include <linux/if_xdp.h>
#include <mtd/ubi-user.h>
#include <net/route.h>
#include <asm/termbits.h>
@ -248,16 +244,6 @@ struct ltchars {
#define FS_KEY_DESC_PREFIX "fscrypt:"
#define FS_KEY_DESC_PREFIX_SIZE 8
#define FS_MAX_KEY_SIZE 64
// XDP socket constants do not appear to be picked up otherwise.
// Copied from samples/bpf/xdpsock_user.c.
#ifndef SOL_XDP
#define SOL_XDP 283
#endif
#ifndef AF_XDP
#define AF_XDP 44
#endif
'
includes_NetBSD='
@ -266,7 +252,6 @@ includes_NetBSD='
#include <sys/event.h>
#include <sys/extattr.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
@ -292,7 +277,6 @@ includes_OpenBSD='
#include <sys/param.h>
#include <sys/event.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/stat.h>
@ -394,7 +378,6 @@ ccflags="$@"
$2 ~ /^EXTATTR_NAMESPACE_NAMES/ ||
$2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next}
$2 !~ /^ECCAPBITS/ &&
$2 !~ /^ETH_/ &&
$2 !~ /^EPROC_/ &&
$2 !~ /^EQUIV_/ &&
@ -430,7 +413,7 @@ ccflags="$@"
$2 ~ /^TC[IO](ON|OFF)$/ ||
$2 ~ /^IN_/ ||
$2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|MFD|T?PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|T?PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
$2 ~ /^TP_STATUS_/ ||
$2 ~ /^FALLOC_/ ||
$2 == "ICMPV6_FILTER" ||
@ -441,7 +424,6 @@ ccflags="$@"
$2 ~ /^KERN_(HOSTNAME|OS(RELEASE|TYPE)|VERSION)$/ ||
$2 ~ /^HW_MACHINE$/ ||
$2 ~ /^SYSCTL_VERS/ ||
$2 !~ "MNT_BITS" &&
$2 ~ /^(MS|MNT|UMOUNT)_/ ||
$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
$2 ~ /^(O|F|E?FD|NAME|S|PTRACE|PT)_/ ||
@ -492,7 +474,6 @@ ccflags="$@"
$2 ~ /^FSOPT_/ ||
$2 ~ /^WDIOC_/ ||
$2 ~ /^NFN/ ||
$2 ~ /^XDP_/ ||
$2 ~ /^(HDIO|WIN|SMART)_/ ||
$2 !~ "WMESGLEN" &&
$2 ~ /^W[A-Z0-9]+$/ ||

6
vendor/golang.org/x/sys/unix/syscall_aix.go generated vendored
View File

@ -345,11 +345,11 @@ func IoctlSetInt(fd int, req uint, value int) error {
return ioctl(fd, req, uintptr(value))
}
func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
func IoctlSetWinsize(fd int, req uint, value *Winsize) error {
return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
}
func ioctlSetTermios(fd int, req uint, value *Termios) error {
func IoctlSetTermios(fd int, req uint, value *Termios) error {
return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
}
@ -419,10 +419,8 @@ func Flock(fd int, how int) (err error) {
//sysnb Getsid(pid int) (sid int, err error)
//sysnb Kill(pid int, sig syscall.Signal) (err error)
//sys Klogctl(typ int, buf []byte) (n int, err error) = syslog
//sys Mkdir(dirfd int, path string, mode uint32) (err error)
//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
//sys Mkfifo(path string, mode uint32) (err error)
//sys Mknod(path string, mode uint32, dev int) (err error)
//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys Open(path string, mode int, perm uint32) (fd int, err error) = open64

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