Merge pull request #26321 from hashicorp/jbardin/simplify-data-lifecycle
simplify data lifecycle
This commit is contained in:
commit
915d4e4b45
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@ -73,13 +73,12 @@ func TestPlanApplyInAutomation(t *testing.T) {
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// stateResources := plan.Changes.Resources
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diffResources := plan.Changes.Resources
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if len(diffResources) != 2 {
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if len(diffResources) != 1 {
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t.Errorf("incorrect number of resources in plan")
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}
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expected := map[string]plans.Action{
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"data.template_file.test": plans.Read,
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"null_resource.test": plans.Create,
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"null_resource.test": plans.Create,
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}
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for _, r := range diffResources {
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@ -72,13 +72,12 @@ func TestPrimarySeparatePlan(t *testing.T) {
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}
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diffResources := plan.Changes.Resources
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if len(diffResources) != 2 {
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if len(diffResources) != 1 {
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t.Errorf("incorrect number of resources in plan")
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}
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expected := map[string]plans.Action{
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"data.template_file.test": plans.Read,
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"null_resource.test": plans.Create,
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"null_resource.test": plans.Create,
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}
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for _, r := range diffResources {
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@ -1879,22 +1879,11 @@ func TestContext2Plan_computedInFunction(t *testing.T) {
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diags := ctx.Validate()
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assertNoErrors(t, diags)
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state, diags := ctx.Refresh() // data resource is read in this step
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_, diags = ctx.Plan()
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assertNoErrors(t, diags)
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if !p.ReadDataSourceCalled {
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t.Fatalf("ReadDataSource was not called on provider during refresh; should've been called")
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}
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p.ReadDataSourceCalled = false // reset for next call
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t.Logf("state after refresh:\n%s", state)
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_, diags = ctx.Plan() // should do nothing with data resource in this step, since it was already read
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assertNoErrors(t, diags)
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if p.ReadDataSourceCalled {
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// there was no config change to read during plan
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t.Fatalf("ReadDataSource should not have been called")
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t.Fatalf("ReadDataSource was not called on provider during plan; should've been called")
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}
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}
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@ -5007,11 +4996,6 @@ func TestContext2Plan_createBeforeDestroy_depends_datasource(t *testing.T) {
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},
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})
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// We're skipping ctx.Refresh here, which simulates what happens when
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// running "terraform plan -refresh=false". As a result, we don't get our
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// usual opportunity to read the data source during the refresh step and
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// thus the plan call below is forced to produce a deferred read action.
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plan, diags := ctx.Plan()
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if diags.HasErrors() {
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t.Fatalf("unexpected errors: %s", diags.Err())
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@ -5052,22 +5036,6 @@ func TestContext2Plan_createBeforeDestroy_depends_datasource(t *testing.T) {
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"num": cty.StringVal("2"),
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"computed": cty.StringVal("data_id"),
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}), ric.After)
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case "data.aws_vpc.bar[0]":
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if res.Action != plans.Read {
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t.Fatalf("resource %s should be read, got %s", ric.Addr, ric.Action)
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}
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checkVals(t, objectVal(t, schema, map[string]cty.Value{
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"id": cty.StringVal("data_id"),
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"foo": cty.StringVal("0"),
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}), ric.After)
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case "data.aws_vpc.bar[1]":
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if res.Action != plans.Read {
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t.Fatalf("resource %s should be read, got %s", ric.Addr, ric.Action)
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}
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checkVals(t, objectVal(t, schema, map[string]cty.Value{
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"id": cty.StringVal("data_id"),
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"foo": cty.StringVal("1"),
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}), ric.After)
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default:
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t.Fatal("unknown instance:", i)
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}
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@ -5077,8 +5045,6 @@ func TestContext2Plan_createBeforeDestroy_depends_datasource(t *testing.T) {
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wantAddrs := map[string]struct{}{
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"aws_instance.foo[0]": struct{}{},
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"aws_instance.foo[1]": struct{}{},
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"data.aws_vpc.bar[0]": struct{}{},
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"data.aws_vpc.bar[1]": struct{}{},
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}
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if !cmp.Equal(seenAddrs, wantAddrs) {
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t.Errorf("incorrect addresses in changeset:\n%s", cmp.Diff(wantAddrs, seenAddrs))
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@ -907,9 +907,7 @@ func TestContext2Refresh_dataCount(t *testing.T) {
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t.Fatalf("refresh errors: %s", diags.Err())
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}
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checkStateString(t, s, `data.test.foo.0:
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ID =
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provider = provider["registry.terraform.io/hashicorp/test"]`)
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checkStateString(t, s, `<no state>`)
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}
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func TestContext2Refresh_dataState(t *testing.T) {
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@ -44,22 +44,6 @@ func (n *evalReadDataApply) Eval(ctx EvalContext) (interface{}, error) {
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return nil, err
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}
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// We have a change and it is complete, which means we read the data
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// source during plan and only need to store it in state.
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if planned.After.IsWhollyKnown() {
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if err := ctx.Hook(func(h Hook) (HookAction, error) {
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return h.PostApply(absAddr, states.CurrentGen, planned.After, nil)
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}); err != nil {
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diags = diags.Append(err)
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}
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*n.State = &states.ResourceInstanceObject{
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Value: planned.After,
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Status: states.ObjectReady,
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}
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return nil, diags.ErrWithWarnings()
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}
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config := *n.Config
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providerSchema := *n.ProviderSchema
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schema, _ := providerSchema.SchemaForResourceAddr(n.Addr.ContainingResource())
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@ -7,7 +7,6 @@ import (
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"github.com/zclconf/go-cty/cty"
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"github.com/hashicorp/terraform/configs/configschema"
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"github.com/hashicorp/terraform/plans"
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"github.com/hashicorp/terraform/plans/objchange"
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"github.com/hashicorp/terraform/states"
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@ -102,18 +101,8 @@ func (n *evalReadDataPlan) Eval(ctx EvalContext) (interface{}, error) {
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return nil, diags.ErrWithWarnings()
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}
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// If we have a stored state we may not need to re-read the data source.
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// Check the config against the state to see if there are any difference.
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proposedVal, hasChanges := dataObjectHasChanges(schema, priorVal, configVal)
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if !hasChanges {
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log.Printf("[TRACE] evalReadDataPlan: %s no change detected, using existing state", absAddr)
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// state looks up to date, and must have been read during refresh
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return nil, diags.ErrWithWarnings()
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}
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log.Printf("[TRACE] evalReadDataPlan: %s configuration changed, planning data source", absAddr)
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// We have a complete configuration with no dependencies to wait on, so we
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// can read the data source into the state.
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newVal, readDiags := n.readDataSource(ctx, configVal)
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diags = diags.Append(readDiags)
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if diags.HasErrors() {
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@ -122,6 +111,10 @@ func (n *evalReadDataPlan) Eval(ctx EvalContext) (interface{}, error) {
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// if we have a prior value, we can check for any irregularities in the response
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if !priorVal.IsNull() {
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// While we don't propose planned changes for data sources, we can
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// generate a proposed value for comparison to ensure the data source
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// is returning a result following the rules of the provider contract.
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proposedVal := objchange.ProposedNewObject(schema, priorVal, configVal)
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if errs := objchange.AssertObjectCompatible(schema, proposedVal, newVal); len(errs) > 0 {
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// Resources have the LegacyTypeSystem field to signal when they are
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// using an SDK which may not produce precise values. While data
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@ -138,27 +131,6 @@ func (n *evalReadDataPlan) Eval(ctx EvalContext) (interface{}, error) {
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}
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}
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// We still default to read here, to indicate any changes in the plan, even
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// though this will already be written in the refreshed state.
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action := plans.Read
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if priorVal.Equals(newVal).True() {
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action = plans.NoOp
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}
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// The returned value from ReadDataSource must be non-nil and known,
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// which we store in the change. Apply will use the fact that the After
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// value is wholly kown to save the state directly, rather than reading the
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// data source again.
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*n.OutputChange = &plans.ResourceInstanceChange{
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Addr: absAddr,
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ProviderAddr: n.ProviderAddr,
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Change: plans.Change{
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Action: action,
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Before: priorVal,
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After: newVal,
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},
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}
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*n.State = &states.ResourceInstanceObject{
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Value: newVal,
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Status: states.ObjectReady,
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@ -190,97 +162,3 @@ func (n *evalReadDataPlan) forcePlanRead(ctx EvalContext) bool {
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}
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return false
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}
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// dataObjectHasChanges determines if the newly evaluated config would cause
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// any changes in the stored value, indicating that we need to re-read this
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// data source. The proposed value is returned for validation against the
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// ReadDataSource response.
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func dataObjectHasChanges(schema *configschema.Block, priorVal, configVal cty.Value) (proposedVal cty.Value, hasChanges bool) {
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if priorVal.IsNull() {
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return priorVal, true
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}
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// Applying the configuration to the stored state will allow us to detect any changes.
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proposedVal = objchange.ProposedNewObject(schema, priorVal, configVal)
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if !configVal.IsWhollyKnown() {
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// Config should have been known here, but handle it the same as ProposedNewObject
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return proposedVal, true
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}
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// Normalize the prior value so we can correctly compare the two even if
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// the prior value came through the legacy SDK.
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priorVal = createEmptyBlocks(schema, priorVal)
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return proposedVal, proposedVal.Equals(priorVal).False()
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}
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// createEmptyBlocks will fill in null TypeList or TypeSet blocks with Empty
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// values. Our decoder will always decode blocks as empty containers, but the
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// legacy SDK may replace those will null values. Normalizing these values
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// allows us to correctly compare the ProposedNewObject value in
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// dataObjectyHasChanges.
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func createEmptyBlocks(schema *configschema.Block, val cty.Value) cty.Value {
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if val.IsNull() || !val.IsKnown() {
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return val
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}
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if !val.Type().IsObjectType() {
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panic(fmt.Sprintf("unexpected type %#v\n", val.Type()))
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}
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// if there are no blocks, don't bother recreating the cty.Value
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if len(schema.BlockTypes) == 0 {
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return val
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}
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objMap := val.AsValueMap()
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for name, blockType := range schema.BlockTypes {
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block, ok := objMap[name]
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if !ok {
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continue
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}
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// helper to build the recursive block values
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nextBlocks := func() []cty.Value {
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// this is only called once we know this is a non-null List or Set
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// with a length > 0
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newVals := make([]cty.Value, 0, block.LengthInt())
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for it := block.ElementIterator(); it.Next(); {
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_, val := it.Element()
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newVals = append(newVals, createEmptyBlocks(&blockType.Block, val))
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}
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return newVals
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}
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// Blocks are always decoded as empty containers, but the legacy
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// SDK may return null when they are empty.
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switch blockType.Nesting {
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// We are only concerned with block types that can come from the legacy
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// sdk, which means TypeList or TypeSet.
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case configschema.NestingList:
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ety := block.Type().ElementType()
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switch {
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case block.IsNull():
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objMap[name] = cty.ListValEmpty(ety)
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case block.LengthInt() == 0:
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continue
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default:
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objMap[name] = cty.ListVal(nextBlocks())
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}
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case configschema.NestingSet:
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ety := block.Type().ElementType()
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switch {
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case block.IsNull():
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objMap[name] = cty.SetValEmpty(ety)
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case block.LengthInt() == 0:
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continue
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default:
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objMap[name] = cty.SetVal(nextBlocks())
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}
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}
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}
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return cty.ObjectVal(objMap)
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}
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@ -1,371 +0,0 @@
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package terraform
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import (
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"testing"
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"github.com/hashicorp/terraform/configs/configschema"
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"github.com/zclconf/go-cty/cty"
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)
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func TestReadDataCreateEmptyBlocks(t *testing.T) {
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setSchema := &configschema.Block{
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BlockTypes: map[string]*configschema.NestedBlock{
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"set": {
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Nesting: configschema.NestingSet,
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Block: configschema.Block{
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Attributes: map[string]*configschema.Attribute{
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"attr": {
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Type: cty.String,
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Optional: true,
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},
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},
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},
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},
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},
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}
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nestedSetSchema := &configschema.Block{
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BlockTypes: map[string]*configschema.NestedBlock{
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"set": {
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Nesting: configschema.NestingSet,
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Block: configschema.Block{
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BlockTypes: map[string]*configschema.NestedBlock{
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"nested-set": {
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Nesting: configschema.NestingSet,
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Block: configschema.Block{
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Attributes: map[string]*configschema.Attribute{
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"attr": {
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Type: cty.String,
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Optional: true,
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},
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},
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},
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},
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},
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},
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},
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},
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}
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listSchema := &configschema.Block{
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BlockTypes: map[string]*configschema.NestedBlock{
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"list": {
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Nesting: configschema.NestingList,
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Block: configschema.Block{
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Attributes: map[string]*configschema.Attribute{
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"attr": {
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Type: cty.String,
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Optional: true,
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},
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},
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},
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},
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},
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}
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|
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nestedListSchema := &configschema.Block{
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BlockTypes: map[string]*configschema.NestedBlock{
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"list": {
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Nesting: configschema.NestingList,
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Block: configschema.Block{
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BlockTypes: map[string]*configschema.NestedBlock{
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"nested-list": {
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Nesting: configschema.NestingList,
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Block: configschema.Block{
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Attributes: map[string]*configschema.Attribute{
|
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"attr": {
|
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Type: cty.String,
|
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Optional: true,
|
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},
|
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},
|
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},
|
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},
|
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},
|
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},
|
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},
|
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},
|
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}
|
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|
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singleSchema := &configschema.Block{
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BlockTypes: map[string]*configschema.NestedBlock{
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"single": {
|
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Nesting: configschema.NestingSingle,
|
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Block: configschema.Block{
|
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Attributes: map[string]*configschema.Attribute{
|
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"attr": {
|
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Type: cty.String,
|
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Optional: true,
|
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},
|
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},
|
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},
|
||||
},
|
||||
},
|
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}
|
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|
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for _, tc := range []struct {
|
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name string
|
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schema *configschema.Block
|
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val cty.Value
|
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expect cty.Value
|
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}{
|
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{
|
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"set-block",
|
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setSchema,
|
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cty.ObjectVal(map[string]cty.Value{
|
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"set": cty.SetVal([]cty.Value{
|
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cty.ObjectVal(map[string]cty.Value{
|
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"attr": cty.StringVal("ok"),
|
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}),
|
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}),
|
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}),
|
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cty.ObjectVal(map[string]cty.Value{
|
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"set": cty.SetVal([]cty.Value{
|
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cty.ObjectVal(map[string]cty.Value{
|
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"attr": cty.StringVal("ok"),
|
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}),
|
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}),
|
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}),
|
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},
|
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{
|
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"set-block-empty",
|
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setSchema,
|
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cty.ObjectVal(map[string]cty.Value{
|
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"set": cty.SetValEmpty(
|
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cty.Object(map[string]cty.Type{
|
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"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
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cty.ObjectVal(map[string]cty.Value{
|
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"set": cty.SetValEmpty(
|
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cty.Object(map[string]cty.Type{
|
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"attr": cty.String,
|
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}),
|
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),
|
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}),
|
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},
|
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{
|
||||
"set-block-null",
|
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setSchema,
|
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cty.ObjectVal(map[string]cty.Value{
|
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"set": cty.NullVal(cty.Set(
|
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cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
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}),
|
||||
)),
|
||||
}),
|
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cty.ObjectVal(map[string]cty.Value{
|
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"set": cty.SetValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
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}),
|
||||
),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"list-block",
|
||||
listSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
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"list": cty.ListVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"attr": cty.StringVal("ok"),
|
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}),
|
||||
}),
|
||||
}),
|
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cty.ObjectVal(map[string]cty.Value{
|
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"list": cty.ListVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"attr": cty.StringVal("ok"),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"list-block-empty",
|
||||
listSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.ListValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.ListValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"list-block-null",
|
||||
listSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.NullVal(cty.List(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
)),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.ListValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"nested-set-block",
|
||||
nestedSetSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"attr": cty.StringVal("ok"),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"attr": cty.StringVal("ok"),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"nested-set-block-empty",
|
||||
nestedSetSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-set": cty.SetValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-set": cty.SetValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"nested-set-block-null",
|
||||
nestedSetSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-set": cty.NullVal(cty.Set(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
)),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"set": cty.SetVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-set": cty.SetValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"nested-list-block-empty",
|
||||
nestedListSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.ListVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-list": cty.ListValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.ListVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-list": cty.ListValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"nested-list-block-null",
|
||||
nestedListSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.ListVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-list": cty.NullVal(cty.List(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
)),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"list": cty.ListVal([]cty.Value{
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"nested-list": cty.ListValEmpty(
|
||||
cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
}),
|
||||
),
|
||||
}),
|
||||
}),
|
||||
}),
|
||||
},
|
||||
{
|
||||
"single-block-null",
|
||||
singleSchema,
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"single": cty.NullVal(cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
})),
|
||||
}),
|
||||
cty.ObjectVal(map[string]cty.Value{
|
||||
"single": cty.NullVal(cty.Object(map[string]cty.Type{
|
||||
"attr": cty.String,
|
||||
})),
|
||||
}),
|
||||
},
|
||||
} {
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
val := createEmptyBlocks(tc.schema, tc.val)
|
||||
if !tc.expect.Equals(val).True() {
|
||||
t.Fatalf("\nexpected: %#v\ngot : %#v\n", tc.expect, val)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue