remove google.golang.org/cloud
It's not used, and wasn't the correct import path
This commit is contained in:
parent
bf1bac3a76
commit
4e1b146ac2
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@ -1,202 +0,0 @@
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|||
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Apache License
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@ -1,327 +0,0 @@
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|||
// Copyright 2014 Google Inc. All Rights Reserved.
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//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
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// you may not use this file except in compliance with the License.
|
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// You may obtain a copy of the License at
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//
|
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
|
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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||||
|
||||
// Package metadata provides access to Google Compute Engine (GCE)
|
||||
// metadata and API service accounts.
|
||||
//
|
||||
// This package is a wrapper around the GCE metadata service,
|
||||
// as documented at https://developers.google.com/compute/docs/metadata.
|
||||
package metadata // import "google.golang.org/cloud/compute/metadata"
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||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"os"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"google.golang.org/cloud/internal"
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||||
)
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||||
|
||||
type cachedValue struct {
|
||||
k string
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||||
trim bool
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||||
mu sync.Mutex
|
||||
v string
|
||||
}
|
||||
|
||||
var (
|
||||
projID = &cachedValue{k: "project/project-id", trim: true}
|
||||
projNum = &cachedValue{k: "project/numeric-project-id", trim: true}
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||||
instID = &cachedValue{k: "instance/id", trim: true}
|
||||
)
|
||||
|
||||
var metaClient = &http.Client{
|
||||
Transport: &internal.Transport{
|
||||
Base: &http.Transport{
|
||||
Dial: (&net.Dialer{
|
||||
Timeout: 750 * time.Millisecond,
|
||||
KeepAlive: 30 * time.Second,
|
||||
}).Dial,
|
||||
ResponseHeaderTimeout: 750 * time.Millisecond,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
// NotDefinedError is returned when requested metadata is not defined.
|
||||
//
|
||||
// The underlying string is the suffix after "/computeMetadata/v1/".
|
||||
//
|
||||
// This error is not returned if the value is defined to be the empty
|
||||
// string.
|
||||
type NotDefinedError string
|
||||
|
||||
func (suffix NotDefinedError) Error() string {
|
||||
return fmt.Sprintf("metadata: GCE metadata %q not defined", string(suffix))
|
||||
}
|
||||
|
||||
// Get returns a value from the metadata service.
|
||||
// The suffix is appended to "http://${GCE_METADATA_HOST}/computeMetadata/v1/".
|
||||
//
|
||||
// If the GCE_METADATA_HOST environment variable is not defined, a default of
|
||||
// 169.254.169.254 will be used instead.
|
||||
//
|
||||
// If the requested metadata is not defined, the returned error will
|
||||
// be of type NotDefinedError.
|
||||
func Get(suffix string) (string, error) {
|
||||
val, _, err := getETag(suffix)
|
||||
return val, err
|
||||
}
|
||||
|
||||
// getETag returns a value from the metadata service as well as the associated
|
||||
// ETag. This func is otherwise equivalent to Get.
|
||||
func getETag(suffix string) (value, etag string, err error) {
|
||||
// Using a fixed IP makes it very difficult to spoof the metadata service in
|
||||
// a container, which is an important use-case for local testing of cloud
|
||||
// deployments. To enable spoofing of the metadata service, the environment
|
||||
// variable GCE_METADATA_HOST is first inspected to decide where metadata
|
||||
// requests shall go.
|
||||
host := os.Getenv("GCE_METADATA_HOST")
|
||||
if host == "" {
|
||||
// Using 169.254.169.254 instead of "metadata" here because Go
|
||||
// binaries built with the "netgo" tag and without cgo won't
|
||||
// know the search suffix for "metadata" is
|
||||
// ".google.internal", and this IP address is documented as
|
||||
// being stable anyway.
|
||||
host = "169.254.169.254"
|
||||
}
|
||||
url := "http://" + host + "/computeMetadata/v1/" + suffix
|
||||
req, _ := http.NewRequest("GET", url, nil)
|
||||
req.Header.Set("Metadata-Flavor", "Google")
|
||||
res, err := metaClient.Do(req)
|
||||
if err != nil {
|
||||
return "", "", err
|
||||
}
|
||||
defer res.Body.Close()
|
||||
if res.StatusCode == http.StatusNotFound {
|
||||
return "", "", NotDefinedError(suffix)
|
||||
}
|
||||
if res.StatusCode != 200 {
|
||||
return "", "", fmt.Errorf("status code %d trying to fetch %s", res.StatusCode, url)
|
||||
}
|
||||
all, err := ioutil.ReadAll(res.Body)
|
||||
if err != nil {
|
||||
return "", "", err
|
||||
}
|
||||
return string(all), res.Header.Get("Etag"), nil
|
||||
}
|
||||
|
||||
func getTrimmed(suffix string) (s string, err error) {
|
||||
s, err = Get(suffix)
|
||||
s = strings.TrimSpace(s)
|
||||
return
|
||||
}
|
||||
|
||||
func (c *cachedValue) get() (v string, err error) {
|
||||
defer c.mu.Unlock()
|
||||
c.mu.Lock()
|
||||
if c.v != "" {
|
||||
return c.v, nil
|
||||
}
|
||||
if c.trim {
|
||||
v, err = getTrimmed(c.k)
|
||||
} else {
|
||||
v, err = Get(c.k)
|
||||
}
|
||||
if err == nil {
|
||||
c.v = v
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
var onGCE struct {
|
||||
sync.Mutex
|
||||
set bool
|
||||
v bool
|
||||
}
|
||||
|
||||
// OnGCE reports whether this process is running on Google Compute Engine.
|
||||
func OnGCE() bool {
|
||||
defer onGCE.Unlock()
|
||||
onGCE.Lock()
|
||||
if onGCE.set {
|
||||
return onGCE.v
|
||||
}
|
||||
onGCE.set = true
|
||||
|
||||
// We use the DNS name of the metadata service here instead of the IP address
|
||||
// because we expect that to fail faster in the not-on-GCE case.
|
||||
res, err := metaClient.Get("http://metadata.google.internal")
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
onGCE.v = res.Header.Get("Metadata-Flavor") == "Google"
|
||||
return onGCE.v
|
||||
}
|
||||
|
||||
// Subscribe subscribes to a value from the metadata service.
|
||||
// The suffix is appended to "http://${GCE_METADATA_HOST}/computeMetadata/v1/".
|
||||
//
|
||||
// Subscribe calls fn with the latest metadata value indicated by the provided
|
||||
// suffix. If the metadata value is deleted, fn is called with the empty string
|
||||
// and ok false. Subscribe blocks until fn returns a non-nil error or the value
|
||||
// is deleted. Subscribe returns the error value returned from the last call to
|
||||
// fn, which may be nil when ok == false.
|
||||
func Subscribe(suffix string, fn func(v string, ok bool) error) error {
|
||||
const failedSubscribeSleep = time.Second * 5
|
||||
|
||||
// First check to see if the metadata value exists at all.
|
||||
val, lastETag, err := getETag(suffix)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := fn(val, true); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
ok := true
|
||||
suffix += "?wait_for_change=true&last_etag="
|
||||
for {
|
||||
val, etag, err := getETag(suffix + url.QueryEscape(lastETag))
|
||||
if err != nil {
|
||||
if _, deleted := err.(NotDefinedError); !deleted {
|
||||
time.Sleep(failedSubscribeSleep)
|
||||
continue // Retry on other errors.
|
||||
}
|
||||
ok = false
|
||||
}
|
||||
lastETag = etag
|
||||
|
||||
if err := fn(val, ok); err != nil || !ok {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ProjectID returns the current instance's project ID string.
|
||||
func ProjectID() (string, error) { return projID.get() }
|
||||
|
||||
// NumericProjectID returns the current instance's numeric project ID.
|
||||
func NumericProjectID() (string, error) { return projNum.get() }
|
||||
|
||||
// InternalIP returns the instance's primary internal IP address.
|
||||
func InternalIP() (string, error) {
|
||||
return getTrimmed("instance/network-interfaces/0/ip")
|
||||
}
|
||||
|
||||
// ExternalIP returns the instance's primary external (public) IP address.
|
||||
func ExternalIP() (string, error) {
|
||||
return getTrimmed("instance/network-interfaces/0/access-configs/0/external-ip")
|
||||
}
|
||||
|
||||
// Hostname returns the instance's hostname. This will be of the form
|
||||
// "<instanceID>.c.<projID>.internal".
|
||||
func Hostname() (string, error) {
|
||||
return getTrimmed("instance/hostname")
|
||||
}
|
||||
|
||||
// InstanceTags returns the list of user-defined instance tags,
|
||||
// assigned when initially creating a GCE instance.
|
||||
func InstanceTags() ([]string, error) {
|
||||
var s []string
|
||||
j, err := Get("instance/tags")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := json.NewDecoder(strings.NewReader(j)).Decode(&s); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// InstanceID returns the current VM's numeric instance ID.
|
||||
func InstanceID() (string, error) {
|
||||
return instID.get()
|
||||
}
|
||||
|
||||
// InstanceName returns the current VM's instance ID string.
|
||||
func InstanceName() (string, error) {
|
||||
host, err := Hostname()
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
return strings.Split(host, ".")[0], nil
|
||||
}
|
||||
|
||||
// Zone returns the current VM's zone, such as "us-central1-b".
|
||||
func Zone() (string, error) {
|
||||
zone, err := getTrimmed("instance/zone")
|
||||
// zone is of the form "projects/<projNum>/zones/<zoneName>".
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
return zone[strings.LastIndex(zone, "/")+1:], nil
|
||||
}
|
||||
|
||||
// InstanceAttributes returns the list of user-defined attributes,
|
||||
// assigned when initially creating a GCE VM instance. The value of an
|
||||
// attribute can be obtained with InstanceAttributeValue.
|
||||
func InstanceAttributes() ([]string, error) { return lines("instance/attributes/") }
|
||||
|
||||
// ProjectAttributes returns the list of user-defined attributes
|
||||
// applying to the project as a whole, not just this VM. The value of
|
||||
// an attribute can be obtained with ProjectAttributeValue.
|
||||
func ProjectAttributes() ([]string, error) { return lines("project/attributes/") }
|
||||
|
||||
func lines(suffix string) ([]string, error) {
|
||||
j, err := Get(suffix)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
s := strings.Split(strings.TrimSpace(j), "\n")
|
||||
for i := range s {
|
||||
s[i] = strings.TrimSpace(s[i])
|
||||
}
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// InstanceAttributeValue returns the value of the provided VM
|
||||
// instance attribute.
|
||||
//
|
||||
// If the requested attribute is not defined, the returned error will
|
||||
// be of type NotDefinedError.
|
||||
//
|
||||
// InstanceAttributeValue may return ("", nil) if the attribute was
|
||||
// defined to be the empty string.
|
||||
func InstanceAttributeValue(attr string) (string, error) {
|
||||
return Get("instance/attributes/" + attr)
|
||||
}
|
||||
|
||||
// ProjectAttributeValue returns the value of the provided
|
||||
// project attribute.
|
||||
//
|
||||
// If the requested attribute is not defined, the returned error will
|
||||
// be of type NotDefinedError.
|
||||
//
|
||||
// ProjectAttributeValue may return ("", nil) if the attribute was
|
||||
// defined to be the empty string.
|
||||
func ProjectAttributeValue(attr string) (string, error) {
|
||||
return Get("project/attributes/" + attr)
|
||||
}
|
||||
|
||||
// Scopes returns the service account scopes for the given account.
|
||||
// The account may be empty or the string "default" to use the instance's
|
||||
// main account.
|
||||
func Scopes(serviceAccount string) ([]string, error) {
|
||||
if serviceAccount == "" {
|
||||
serviceAccount = "default"
|
||||
}
|
||||
return lines("instance/service-accounts/" + serviceAccount + "/scopes")
|
||||
}
|
|
@ -1,128 +0,0 @@
|
|||
// Copyright 2014 Google Inc. All Rights Reserved.
|
||||
//
|
||||
// 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 support for the cloud packages.
|
||||
//
|
||||
// Users should not import this package directly.
|
||||
package internal
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net/http"
|
||||
"sync"
|
||||
|
||||
"golang.org/x/net/context"
|
||||
)
|
||||
|
||||
type contextKey struct{}
|
||||
|
||||
func WithContext(parent context.Context, projID string, c *http.Client) context.Context {
|
||||
if c == nil {
|
||||
panic("nil *http.Client passed to WithContext")
|
||||
}
|
||||
if projID == "" {
|
||||
panic("empty project ID passed to WithContext")
|
||||
}
|
||||
return context.WithValue(parent, contextKey{}, &cloudContext{
|
||||
ProjectID: projID,
|
||||
HTTPClient: c,
|
||||
})
|
||||
}
|
||||
|
||||
const userAgent = "gcloud-golang/0.1"
|
||||
|
||||
type cloudContext struct {
|
||||
ProjectID string
|
||||
HTTPClient *http.Client
|
||||
|
||||
mu sync.Mutex // guards svc
|
||||
svc map[string]interface{} // e.g. "storage" => *rawStorage.Service
|
||||
}
|
||||
|
||||
// Service returns the result of the fill function if it's never been
|
||||
// called before for the given name (which is assumed to be an API
|
||||
// service name, like "datastore"). If it has already been cached, the fill
|
||||
// func is not run.
|
||||
// It's safe for concurrent use by multiple goroutines.
|
||||
func Service(ctx context.Context, name string, fill func(*http.Client) interface{}) interface{} {
|
||||
return cc(ctx).service(name, fill)
|
||||
}
|
||||
|
||||
func (c *cloudContext) service(name string, fill func(*http.Client) interface{}) interface{} {
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
|
||||
if c.svc == nil {
|
||||
c.svc = make(map[string]interface{})
|
||||
} else if v, ok := c.svc[name]; ok {
|
||||
return v
|
||||
}
|
||||
v := fill(c.HTTPClient)
|
||||
c.svc[name] = v
|
||||
return v
|
||||
}
|
||||
|
||||
// Transport is an http.RoundTripper that appends
|
||||
// Google Cloud client's user-agent to the original
|
||||
// request's user-agent header.
|
||||
type Transport struct {
|
||||
// Base is the actual http.RoundTripper
|
||||
// requests will use. It must not be nil.
|
||||
Base http.RoundTripper
|
||||
}
|
||||
|
||||
// RoundTrip appends a user-agent to the existing user-agent
|
||||
// header and delegates the request to the base http.RoundTripper.
|
||||
func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
|
||||
req = cloneRequest(req)
|
||||
ua := req.Header.Get("User-Agent")
|
||||
if ua == "" {
|
||||
ua = userAgent
|
||||
} else {
|
||||
ua = fmt.Sprintf("%s %s", ua, userAgent)
|
||||
}
|
||||
req.Header.Set("User-Agent", ua)
|
||||
return t.Base.RoundTrip(req)
|
||||
}
|
||||
|
||||
// cloneRequest returns a clone of the provided *http.Request.
|
||||
// The clone is a shallow copy of the struct and its Header map.
|
||||
func cloneRequest(r *http.Request) *http.Request {
|
||||
// shallow copy of the struct
|
||||
r2 := new(http.Request)
|
||||
*r2 = *r
|
||||
// deep copy of the Header
|
||||
r2.Header = make(http.Header)
|
||||
for k, s := range r.Header {
|
||||
r2.Header[k] = s
|
||||
}
|
||||
return r2
|
||||
}
|
||||
|
||||
func ProjID(ctx context.Context) string {
|
||||
return cc(ctx).ProjectID
|
||||
}
|
||||
|
||||
func HTTPClient(ctx context.Context) *http.Client {
|
||||
return cc(ctx).HTTPClient
|
||||
}
|
||||
|
||||
// cc returns the internal *cloudContext (cc) state for a context.Context.
|
||||
// It panics if the user did it wrong.
|
||||
func cc(ctx context.Context) *cloudContext {
|
||||
if c, ok := ctx.Value(contextKey{}).(*cloudContext); ok {
|
||||
return c
|
||||
}
|
||||
panic("invalid context.Context type; it should be created with cloud.NewContext")
|
||||
}
|
|
@ -2754,16 +2754,6 @@
|
|||
"path": "google.golang.org/appengine/internal/remote_api",
|
||||
"revision": "b667a5000b082e49c6c6d16867d376a12e9490cd"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "QneJE5GLhQlbsB03OMBxxHI8w18=",
|
||||
"path": "google.golang.org/cloud/compute/metadata",
|
||||
"revision": "fb10e8da373d97f6ba5e648299a10b3b91f14cd5"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "U7dGDNwEHORvJFMoNSXErKE7ITg=",
|
||||
"path": "google.golang.org/cloud/internal",
|
||||
"revision": "fb10e8da373d97f6ba5e648299a10b3b91f14cd5"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "v0plVTBSyu5TvzfwHWNBe5/eZZo=",
|
||||
"comment": "v1.8.5",
|
||||
|
|
Loading…
Reference in New Issue