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Merge pull request #26810 from hashicorp/jbardin/validate-ignore-changes

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Allow null attributes to be referenced in ignore_changes
pull/26826/head
James Bardin 6 years ago committed by GitHub
parent 7e212cd02f 99db18388a
commit cb541be377
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 27 additions and 145 deletions
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44
terraform/context_validate_test.go
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@ -1752,50 +1752,6 @@ output "out" {
}
}
func TestContext2Validate_invalidIgnoreChanges(t *testing.T) {
// validate module and output depends_on
m := testModuleInline(t, map[string]string{
"main.tf": `
resource "test_instance" "a" {
lifecycle {
ignore_changes = [foo]
}
}
`,
})
p := testProvider("test")
p.GetSchemaReturn = &ProviderSchema{
ResourceTypes: map[string]*configschema.Block{
"test_instance": {
Attributes: map[string]*configschema.Attribute{
"id": {Type: cty.String, Computed: true},
"foo": {Type: cty.String, Computed: true, Optional: true},
},
},
},
}
ctx := testContext2(t, &ContextOpts{
Config: m,
Providers: map[addrs.Provider]providers.Factory{
addrs.NewDefaultProvider("test"): testProviderFuncFixed(p),
},
})
diags := ctx.Validate()
if !diags.HasErrors() {
t.Fatal("succeeded; want errors")
}
for _, d := range diags {
des := d.Description().Summary
if !strings.Contains(des, "Cannot ignore") {
t.Fatalf(`expected "Invalid depends_on reference", got %q`, des)
}
}
}
func TestContext2Validate_rpcDiagnostics(t *testing.T) {
// validate module and output depends_on
m := testModuleInline(t, map[string]string{

2
terraform/eval_refresh.go
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@ -127,6 +127,8 @@ func (n *EvalRefresh) Eval(ctx EvalContext) tfdiags.Diagnostics {
// We have no way to exempt provider using the legacy SDK from this check,
// so we can only log inconsistencies with the updated state values.
// In most cases these are not errors anyway, and represent "drift" from
// external changes which will be handled by the subsequent plan.
if errs := objchange.AssertObjectCompatible(schema, priorVal, resp.NewState); len(errs) > 0 {
var buf strings.Builder
fmt.Fprintf(&buf, "[WARN] Provider %q produced an unexpected new value for %s during refresh.", n.ProviderAddr.Provider.String(), absAddr)

69
terraform/eval_validate.go
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@ -252,10 +252,6 @@ type EvalValidateResource struct {
Config *configs.Resource
ProviderMetas map[addrs.Provider]*configs.ProviderMeta
// IgnoreWarnings means that warnings will not be passed through. This allows
// "just-in-time" passes of validation to continue execution through warnings.
IgnoreWarnings bool
// ConfigVal, if non-nil, will be updated with the value resulting from
// evaluating the given configuration body. Since validation is performed
// very early, this value is likely to contain lots of unknown values,
@ -264,12 +260,14 @@ type EvalValidateResource struct {
ConfigVal *cty.Value
}
func (n *EvalValidateResource) Validate(ctx EvalContext) error {
if n.ProviderSchema == nil || *n.ProviderSchema == nil {
return fmt.Errorf("EvalValidateResource has nil schema for %s", n.Addr)
func (n *EvalValidateResource) Validate(ctx EvalContext) tfdiags.Diagnostics {
var diags tfdiags.Diagnostics
if *n.ProviderSchema == nil {
diags = diags.Append(fmt.Errorf("EvalValidateResource has nil schema for %s", n.Addr))
return diags
}
var diags tfdiags.Diagnostics
provider := *n.Provider
cfg := *n.Config
schema := *n.ProviderSchema
@ -351,50 +349,25 @@ func (n *EvalValidateResource) Validate(ctx EvalContext) error {
Detail: fmt.Sprintf("The provider %s does not support resource type %q.", cfg.ProviderConfigAddr(), cfg.Type),
Subject: &cfg.TypeRange,
})
return diags.Err()
return diags
}
configVal, _, valDiags := ctx.EvaluateBlock(cfg.Config, schema, nil, keyData)
diags = diags.Append(valDiags)
if valDiags.HasErrors() {
return diags.Err()
return diags
}
if cfg.Managed != nil { // can be nil only in tests with poorly-configured mocks
for _, traversal := range cfg.Managed.IgnoreChanges {
// This will error out if the traversal contains an invalid
// index step. That is OK if we want users to be able to ignore
// a key that is no longer specified in the config.
// validate the ignore_changes traversals apply.
moreDiags := schema.StaticValidateTraversal(traversal)
diags = diags.Append(moreDiags)
if diags.HasErrors() {
continue
}
// first check to see if this assigned in the config
v, _ := traversal.TraverseRel(configVal)
if !v.IsNull() {
// it's assigned, so we can also assume it's not computed-only
continue
}
// We can't ignore changes that don't exist in the configuration.
// We're not checking specifically if the traversal resolves to
// a computed-only value, but we can hint to the user that it
// might also be the case.
sourceRange := traversal.SourceRange()
diags = diags.Append(&hcl.Diagnostic{
Severity: hcl.DiagError,
Summary: "Cannot ignore argument not set in the configuration",
Detail: fmt.Sprintf("The ignore_changes argument is not set in the configuration.\n" +
"The ignore_changes mechanism only applies to changes " +
"within the configuration, and must be used with " +
"arguments set in the configuration and not computed by " +
"the provider.",
),
Subject: &sourceRange,
})
return diags.Err()
// TODO: we want to notify users that they can't use
// ignore_changes for computed attributes, but we don't have an
// easy way to correlate the config value, schema and
// traversal together.
}
}
@ -419,13 +392,13 @@ func (n *EvalValidateResource) Validate(ctx EvalContext) error {
Detail: fmt.Sprintf("The provider %s does not support data source %q.", cfg.ProviderConfigAddr(), cfg.Type),
Subject: &cfg.TypeRange,
})
return diags.Err()
return diags
}
configVal, _, valDiags := ctx.EvaluateBlock(cfg.Config, schema, nil, keyData)
diags = diags.Append(valDiags)
if valDiags.HasErrors() {
return diags.Err()
return diags
}
req := providers.ValidateDataSourceConfigRequest{
@ -437,17 +410,7 @@ func (n *EvalValidateResource) Validate(ctx EvalContext) error {
diags = diags.Append(resp.Diagnostics.InConfigBody(cfg.Config))
}
if n.IgnoreWarnings {
// If we _only_ have warnings then we'll return nil.
if diags.HasErrors() {
return diags.NonFatalErr()
}
return nil
} else {
// We'll return an error if there are any diagnostics at all, even if
// some of them are warnings.
return diags.NonFatalErr()
}
return diags
}
func (n *EvalValidateResource) validateCount(ctx EvalContext, expr hcl.Expression) tfdiags.Diagnostics {

57
terraform/eval_validate_test.go
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@ -238,45 +238,6 @@ func TestEvalValidateResource_warningsAndErrorsPassedThrough(t *testing.T) {
}
}
func TestEvalValidateResource_ignoreWarnings(t *testing.T) {
mp := simpleMockProvider()
mp.ValidateResourceTypeConfigFn = func(req providers.ValidateResourceTypeConfigRequest) providers.ValidateResourceTypeConfigResponse {
var diags tfdiags.Diagnostics
diags = diags.Append(tfdiags.SimpleWarning("warn"))
return providers.ValidateResourceTypeConfigResponse{
Diagnostics: diags,
}
}
p := providers.Interface(mp)
rc := &configs.Resource{
Mode: addrs.ManagedResourceMode,
Type: "test_object",
Name: "foo",
Config: configs.SynthBody("", map[string]cty.Value{}),
}
node := &EvalValidateResource{
Addr: addrs.Resource{
Mode: addrs.ManagedResourceMode,
Type: "test-object",
Name: "foo",
},
Provider: &p,
Config: rc,
ProviderSchema: &mp.GetSchemaReturn,
IgnoreWarnings: true,
}
ctx := &MockEvalContext{}
ctx.installSimpleEval()
err := node.Validate(ctx)
if err != nil {
t.Fatalf("Expected no error, got: %s", err)
}
}
func TestEvalValidateResource_invalidDependsOn(t *testing.T) {
mp := simpleMockProvider()
mp.ValidateResourceTypeConfigFn = func(req providers.ValidateResourceTypeConfigRequest) providers.ValidateResourceTypeConfigResponse {
@ -323,9 +284,9 @@ func TestEvalValidateResource_invalidDependsOn(t *testing.T) {
ctx := &MockEvalContext{}
ctx.installSimpleEval()
err := node.Validate(ctx)
if err != nil {
t.Fatalf("error for supposedly-valid config: %s", err)
diags := node.Validate(ctx)
if diags.HasErrors() {
t.Fatalf("error for supposedly-valid config: %s", diags.ErrWithWarnings())
}
// Now we'll make it invalid by adding additional traversal steps at
@ -344,11 +305,11 @@ func TestEvalValidateResource_invalidDependsOn(t *testing.T) {
},
})
err = node.Validate(ctx)
if err == nil {
diags = node.Validate(ctx)
if !diags.HasErrors() {
t.Fatal("no error for invalid depends_on")
}
if got, want := err.Error(), "Invalid depends_on reference"; !strings.Contains(got, want) {
if got, want := diags.Err().Error(), "Invalid depends_on reference"; !strings.Contains(got, want) {
t.Fatalf("wrong error\ngot: %s\nwant: Message containing %q", got, want)
}
@ -360,11 +321,11 @@ func TestEvalValidateResource_invalidDependsOn(t *testing.T) {
},
})
err = node.Validate(ctx)
if err == nil {
diags = node.Validate(ctx)
if !diags.HasErrors() {
t.Fatal("no error for invalid depends_on")
}
if got, want := err.Error(), "Invalid depends_on reference"; !strings.Contains(got, want) {
if got, want := diags.Err().Error(), "Invalid depends_on reference"; !strings.Contains(got, want) {
t.Fatalf("wrong error\ngot: %s\nwant: Message containing %q", got, want)
}
}

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