terraform/terraform/interpolate_test.go

965 lines
22 KiB
Go

package terraform
import (
"fmt"
"os"
"reflect"
"sync"
"testing"
"github.com/davecgh/go-spew/spew"
"github.com/hashicorp/hil"
"github.com/hashicorp/hil/ast"
"github.com/hashicorp/terraform/config"
)
func TestInterpolater_simpleVar(t *testing.T) {
i := &Interpolater{}
scope := &InterpolationScope{}
testInterpolateErr(t, i, scope, "simple")
}
func TestInterpolater_countIndex(t *testing.T) {
i := &Interpolater{}
scope := &InterpolationScope{
Path: rootModulePath,
Resource: &Resource{CountIndex: 42},
}
testInterpolate(t, i, scope, "count.index", ast.Variable{
Value: 42,
Type: ast.TypeInt,
})
}
func TestInterpolater_countIndexInWrongContext(t *testing.T) {
i := &Interpolater{}
scope := &InterpolationScope{
Path: rootModulePath,
}
n := "count.index"
v, err := config.NewInterpolatedVariable(n)
if err != nil {
t.Fatalf("err: %s", err)
}
expectedErr := fmt.Errorf("foo: count.index is only valid within resources")
_, err = i.Values(scope, map[string]config.InterpolatedVariable{
"foo": v,
})
if !reflect.DeepEqual(expectedErr, err) {
t.Fatalf("expected: %#v, got %#v", expectedErr, err)
}
}
func TestInterpolater_moduleVariable(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.web": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "bar",
},
},
},
},
&ModuleState{
Path: []string{RootModuleName, "child"},
Outputs: map[string]*OutputState{
"foo": &OutputState{
Type: "string",
Value: "bar",
},
},
},
},
}
i := &Interpolater{
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "module.child.foo", ast.Variable{
Value: "bar",
Type: ast.TypeString,
})
}
func TestInterpolater_pathCwd(t *testing.T) {
i := &Interpolater{}
scope := &InterpolationScope{}
expected, err := os.Getwd()
if err != nil {
t.Fatalf("err: %s", err)
}
testInterpolate(t, i, scope, "path.cwd", ast.Variable{
Value: expected,
Type: ast.TypeString,
})
}
func TestInterpolater_pathModule(t *testing.T) {
mod := testModule(t, "interpolate-path-module")
i := &Interpolater{
Module: mod,
}
scope := &InterpolationScope{
Path: []string{RootModuleName, "child"},
}
path := mod.Child([]string{"child"}).Config().Dir
testInterpolate(t, i, scope, "path.module", ast.Variable{
Value: path,
Type: ast.TypeString,
})
}
func TestInterpolater_pathRoot(t *testing.T) {
mod := testModule(t, "interpolate-path-module")
i := &Interpolater{
Module: mod,
}
scope := &InterpolationScope{
Path: []string{RootModuleName, "child"},
}
path := mod.Config().Dir
testInterpolate(t, i, scope, "path.root", ast.Variable{
Value: path,
Type: ast.TypeString,
})
}
func TestInterpolater_resourceVariableMap(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.web": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "bar",
Attributes: map[string]string{
"amap.%": "3",
"amap.key1": "value1",
"amap.key2": "value2",
"amap.key3": "value3",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-resource-variable"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
expected := map[string]interface{}{
"key1": "value1",
"key2": "value2",
"key3": "value3",
}
testInterpolate(t, i, scope, "aws_instance.web.amap",
interfaceToVariableSwallowError(expected))
}
func TestInterpolater_resourceVariableComplexMap(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.web": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "bar",
Attributes: map[string]string{
"amap.%": "2",
"amap.key1.#": "2",
"amap.key1.0": "hello",
"amap.key1.1": "world",
"amap.key2.#": "1",
"amap.key2.0": "foo",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-resource-variable"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
expected := map[string]interface{}{
"key1": []interface{}{"hello", "world"},
"key2": []interface{}{"foo"},
}
testInterpolate(t, i, scope, "aws_instance.web.amap",
interfaceToVariableSwallowError(expected))
}
func TestInterpolater_resourceVariable(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.web": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "bar",
Attributes: map[string]string{
"foo": "bar",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-resource-variable"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "aws_instance.web.foo", ast.Variable{
Value: "bar",
Type: ast.TypeString,
})
}
func TestInterpolater_resourceVariableMissingDuringInput(t *testing.T) {
// During the input walk, computed resource attributes may be entirely
// absent since we've not yet produced diffs that tell us what computed
// attributes to expect. In that case, interpolator tolerates it and
// indicates the value is computed.
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
// No resources at all yet, because we're still dealing
// with input and so the resources haven't been created.
},
},
},
}
{
i := &Interpolater{
Operation: walkInput,
Module: testModule(t, "interpolate-resource-variable"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "aws_instance.web.foo", ast.Variable{
Value: config.UnknownVariableValue,
Type: ast.TypeUnknown,
})
}
// This doesn't apply during other walks, like plan
{
i := &Interpolater{
Operation: walkPlan,
Module: testModule(t, "interpolate-resource-variable"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolateErr(t, i, scope, "aws_instance.web.foo")
}
}
func TestInterpolater_resourceVariableMulti(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.web": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "bar",
Attributes: map[string]string{
"foo": config.UnknownVariableValue,
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-resource-variable"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "aws_instance.web.*.foo", ast.Variable{
Value: config.UnknownVariableValue,
Type: ast.TypeUnknown,
})
}
// When a splat reference is made to an attribute that is a computed list,
// the result should be unknown.
func TestInterpolater_resourceVariableMultiList(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.web.0": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "bar",
Attributes: map[string]string{
"ip.#": config.UnknownVariableValue,
},
},
},
"aws_instance.web.1": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "bar",
Attributes: map[string]string{
"ip.#": "0",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-resource-variable"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "aws_instance.web.*.ip", ast.Variable{
Value: config.UnknownVariableValue,
Type: ast.TypeUnknown,
})
}
func TestInterpolater_resourceVariableMulti_interpolated(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.web.0": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "a",
Attributes: map[string]string{"foo": "a"},
},
},
"aws_instance.web.1": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "b",
Attributes: map[string]string{"foo": "b"},
},
},
},
},
},
}
i := &Interpolater{
Operation: walkApply,
Module: testModule(t, "interpolate-multi-interp"),
State: state,
StateLock: lock,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
expected := []interface{}{"a", "b"}
testInterpolate(t, i, scope, "aws_instance.web.*.foo",
interfaceToVariableSwallowError(expected))
}
func interfaceToVariableSwallowError(input interface{}) ast.Variable {
variable, _ := hil.InterfaceToVariable(input)
return variable
}
func TestInterpolator_resourceMultiAttributes(t *testing.T) {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_route53_zone.yada": {
Type: "aws_route53_zone",
Dependencies: []string{},
Primary: &InstanceState{
ID: "AAABBBCCCDDDEEE",
Attributes: map[string]string{
"name_servers.#": "4",
"name_servers.0": "ns-1334.awsdns-38.org",
"name_servers.1": "ns-1680.awsdns-18.co.uk",
"name_servers.2": "ns-498.awsdns-62.com",
"name_servers.3": "ns-601.awsdns-11.net",
"listeners.#": "1",
"listeners.0": "red",
"tags.%": "1",
"tags.Name": "reindeer",
"nothing.#": "0",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-multi-vars"),
StateLock: lock,
State: state,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
name_servers := []interface{}{
"ns-1334.awsdns-38.org",
"ns-1680.awsdns-18.co.uk",
"ns-498.awsdns-62.com",
"ns-601.awsdns-11.net",
}
// More than 1 element
testInterpolate(t, i, scope, "aws_route53_zone.yada.name_servers",
interfaceToVariableSwallowError(name_servers))
// Exactly 1 element
testInterpolate(t, i, scope, "aws_route53_zone.yada.listeners",
interfaceToVariableSwallowError([]interface{}{"red"}))
// Zero elements
testInterpolate(t, i, scope, "aws_route53_zone.yada.nothing",
interfaceToVariableSwallowError([]interface{}{}))
// Maps still need to work
testInterpolate(t, i, scope, "aws_route53_zone.yada.tags.Name", ast.Variable{
Value: "reindeer",
Type: ast.TypeString,
})
}
func TestInterpolator_resourceMultiAttributesWithResourceCount(t *testing.T) {
i := getInterpolaterFixture(t)
scope := &InterpolationScope{
Path: rootModulePath,
}
name_servers := []interface{}{
"ns-1334.awsdns-38.org",
"ns-1680.awsdns-18.co.uk",
"ns-498.awsdns-62.com",
"ns-601.awsdns-11.net",
"ns-000.awsdns-38.org",
"ns-444.awsdns-18.co.uk",
"ns-999.awsdns-62.com",
"ns-666.awsdns-11.net",
}
// More than 1 element
testInterpolate(t, i, scope, "aws_route53_zone.terra.0.name_servers",
interfaceToVariableSwallowError(name_servers[:4]))
// More than 1 element in both
testInterpolate(t, i, scope, "aws_route53_zone.terra.*.name_servers",
interfaceToVariableSwallowError([]interface{}{name_servers[:4], name_servers[4:]}))
// Exactly 1 element
testInterpolate(t, i, scope, "aws_route53_zone.terra.0.listeners",
interfaceToVariableSwallowError([]interface{}{"red"}))
// Exactly 1 element in both
testInterpolate(t, i, scope, "aws_route53_zone.terra.*.listeners",
interfaceToVariableSwallowError([]interface{}{[]interface{}{"red"}, []interface{}{"blue"}}))
// Zero elements
testInterpolate(t, i, scope, "aws_route53_zone.terra.0.nothing",
interfaceToVariableSwallowError([]interface{}{}))
// Zero + 1 element
testInterpolate(t, i, scope, "aws_route53_zone.terra.*.special",
interfaceToVariableSwallowError([]interface{}{[]interface{}{"extra"}}))
// Maps still need to work
testInterpolate(t, i, scope, "aws_route53_zone.terra.0.tags.Name", ast.Variable{
Value: "reindeer",
Type: ast.TypeString,
})
// Maps still need to work in both
testInterpolate(t, i, scope, "aws_route53_zone.terra.*.tags.Name",
interfaceToVariableSwallowError([]interface{}{"reindeer", "white-hart"}))
}
func TestInterpolator_resourceMultiAttributesComputed(t *testing.T) {
lock := new(sync.RWMutex)
// The state would never be written with an UnknownVariableValue in it, but
// it can/does exist that way in memory during the plan phase.
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_route53_zone.yada": &ResourceState{
Type: "aws_route53_zone",
Primary: &InstanceState{
ID: "z-abc123",
Attributes: map[string]string{
"name_servers.#": config.UnknownVariableValue,
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-multi-vars"),
StateLock: lock,
State: state,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "aws_route53_zone.yada.name_servers", ast.Variable{
Value: config.UnknownVariableValue,
Type: ast.TypeUnknown,
})
}
func TestInterpolator_resourceAttributeComputed(t *testing.T) {
lock := new(sync.RWMutex)
// The state would never be written with an UnknownVariableValue in it, but
// it can/does exist that way in memory during the plan phase.
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_route53_zone.yada": &ResourceState{
Type: "aws_route53_zone",
Primary: &InstanceState{
ID: "z-abc123",
Attributes: map[string]string{
"id": config.UnknownVariableValue,
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-multi-vars"),
StateLock: lock,
State: state,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "aws_route53_zone.yada.id", ast.Variable{
Value: config.UnknownVariableValue,
Type: ast.TypeUnknown,
})
}
func TestInterpolater_selfVarWithoutResource(t *testing.T) {
i := &Interpolater{}
scope := &InterpolationScope{
Path: rootModulePath,
}
v, err := config.NewInterpolatedVariable("self.name")
if err != nil {
t.Fatalf("err: %s", err)
}
_, err = i.Values(scope, map[string]config.InterpolatedVariable{"foo": v})
if err == nil {
t.Fatalf("expected err, got none")
}
}
func TestInterpolator_interpolatedListOrder(t *testing.T) {
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_route53_zone.yada": &ResourceState{
Type: "aws_route53_zone",
Dependencies: []string{},
Primary: &InstanceState{
ID: "null",
Attributes: map[string]string{
"foo.#": "12",
"foo.0": "a",
"foo.1": "b",
"foo.2": "c",
"foo.3": "d",
"foo.4": "e",
"foo.5": "f",
"foo.6": "g",
"foo.7": "h",
"foo.8": "i",
"foo.9": "j",
"foo.10": "k",
"foo.11": "l",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-multi-vars"),
StateLock: new(sync.RWMutex),
State: state,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
list := []interface{}{"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l"}
testInterpolate(t, i, scope, "aws_route53_zone.yada.foo",
interfaceToVariableSwallowError(list))
}
func getInterpolaterFixture(t *testing.T) *Interpolater {
lock := new(sync.RWMutex)
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_route53_zone.terra.0": &ResourceState{
Type: "aws_route53_zone",
Dependencies: []string{},
Primary: &InstanceState{
ID: "AAABBBCCCDDDEEE",
Attributes: map[string]string{
"name_servers.#": "4",
"name_servers.0": "ns-1334.awsdns-38.org",
"name_servers.1": "ns-1680.awsdns-18.co.uk",
"name_servers.2": "ns-498.awsdns-62.com",
"name_servers.3": "ns-601.awsdns-11.net",
"listeners.#": "1",
"listeners.0": "red",
"tags.%": "1",
"tags.Name": "reindeer",
"nothing.#": "0",
},
},
},
"aws_route53_zone.terra.1": &ResourceState{
Type: "aws_route53_zone",
Dependencies: []string{},
Primary: &InstanceState{
ID: "EEEFFFGGGHHHIII",
Attributes: map[string]string{
"name_servers.#": "4",
"name_servers.0": "ns-000.awsdns-38.org",
"name_servers.1": "ns-444.awsdns-18.co.uk",
"name_servers.2": "ns-999.awsdns-62.com",
"name_servers.3": "ns-666.awsdns-11.net",
"listeners.#": "1",
"listeners.0": "blue",
"special.#": "1",
"special.0": "extra",
"tags.%": "1",
"tags.Name": "white-hart",
"nothing.#": "0",
},
},
},
},
},
},
}
return &Interpolater{
Module: testModule(t, "interpolate-multi-vars"),
StateLock: lock,
State: state,
}
}
func TestInterpolator_nestedMapsAndLists(t *testing.T) {
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_route53_zone.yada": &ResourceState{
Type: "aws_route53_zone",
Dependencies: []string{},
Primary: &InstanceState{
ID: "null",
Attributes: map[string]string{
"list_of_map.#": "2",
"list_of_map.0.%": "1",
"list_of_map.0.a": "1",
"list_of_map.1.%": "1",
"list_of_map.1.b": "2",
"map_of_list.%": "2",
"map_of_list.list2.#": "1",
"map_of_list.list2.0": "b",
"map_of_list.list1.#": "1",
"map_of_list.list1.0": "a",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-multi-vars"),
StateLock: new(sync.RWMutex),
State: state,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
listOfMap := []interface{}{
map[string]interface{}{"a": "1"},
map[string]interface{}{"b": "2"},
}
mapOfList := map[string]interface{}{
"list1": []interface{}{"a"},
"list2": []interface{}{"b"},
}
testInterpolate(t, i, scope, "aws_route53_zone.yada.list_of_map",
interfaceToVariableSwallowError(listOfMap))
testInterpolate(t, i, scope, `aws_route53_zone.yada.map_of_list`,
interfaceToVariableSwallowError(mapOfList))
}
func TestInterpolator_sets(t *testing.T) {
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_route53_zone.yada": &ResourceState{
Type: "aws_network_interface",
Dependencies: []string{},
Primary: &InstanceState{
ID: "null",
Attributes: map[string]string{
"private_ips.#": "1",
"private_ips.3977356764": "10.42.16.179",
},
},
},
},
},
},
}
i := &Interpolater{
Module: testModule(t, "interpolate-multi-vars"),
StateLock: new(sync.RWMutex),
State: state,
}
scope := &InterpolationScope{
Path: rootModulePath,
}
set := []interface{}{"10.42.16.179"}
testInterpolate(t, i, scope, "aws_route53_zone.yada.private_ips",
interfaceToVariableSwallowError(set))
}
// When a splat reference is made to a resource that is unknown, we should
// return an empty list rather than panicking.
func TestInterpolater_resourceUnknownVariableList(t *testing.T) {
i := &Interpolater{
Module: testModule(t, "plan-computed-data-resource"),
State: NewState(), // state,
StateLock: new(sync.RWMutex),
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "aws_vpc.bar.*.foo",
interfaceToVariableSwallowError([]interface{}{}))
}
func TestInterpolater_terraformEnv(t *testing.T) {
i := &Interpolater{
Meta: &ContextMeta{Env: "foo"},
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolate(t, i, scope, "terraform.env", ast.Variable{
Value: "foo",
Type: ast.TypeString,
})
}
func TestInterpolater_terraformInvalid(t *testing.T) {
i := &Interpolater{
Meta: &ContextMeta{Env: "foo"},
}
scope := &InterpolationScope{
Path: rootModulePath,
}
testInterpolateErr(t, i, scope, "terraform.nope")
}
func testInterpolate(
t *testing.T, i *Interpolater,
scope *InterpolationScope,
n string, expectedVar ast.Variable) {
v, err := config.NewInterpolatedVariable(n)
if err != nil {
t.Fatalf("err: %s", err)
}
actual, err := i.Values(scope, map[string]config.InterpolatedVariable{
"foo": v,
})
if err != nil {
t.Fatalf("err: %s", err)
}
expected := map[string]ast.Variable{
"foo": expectedVar,
}
if !reflect.DeepEqual(actual, expected) {
spew.Config.DisableMethods = true
t.Fatalf("%q:\n\n actual: %#v\nexpected: %#v\n\n%s\n\n%s\n\n", n, actual, expected,
spew.Sdump(actual), spew.Sdump(expected))
}
}
func testInterpolateErr(
t *testing.T, i *Interpolater,
scope *InterpolationScope,
n string) {
v, err := config.NewInterpolatedVariable(n)
if err != nil {
t.Fatalf("err: %s", err)
}
_, err = i.Values(scope, map[string]config.InterpolatedVariable{
"foo": v,
})
if err == nil {
t.Fatalf("%q: succeeded, but wanted error", n)
}
}