Merge pull request #24896 from bendrucker/validate-ignore-empty-provider

validate: ignore providers with no configuration

backend/local/backend_refresh_test.go

@@ -135,6 +135,52 @@ func TestLocal_refreshValidate(t *testing.T) {
 	}
 	<-run.Done()
 
+	checkState(t, b.StateOutPath, `
+test_instance.foo:
+  ID = yes
+  provider = provider["registry.terraform.io/hashicorp/test"]
+	`)
+}
+
+func TestLocal_refreshValidateProviderConfigured(t *testing.T) {
+	b, cleanup := TestLocal(t)
+	defer cleanup()
+
+	schema := &terraform.ProviderSchema{
+		Provider: &configschema.Block{
+			Attributes: map[string]*configschema.Attribute{
+				"value": {Type: cty.String, Optional: true},
+			},
+		},
+		ResourceTypes: map[string]*configschema.Block{
+			"test_instance": {
+				Attributes: map[string]*configschema.Attribute{
+					"id":  {Type: cty.String, Computed: true},
+					"ami": {Type: cty.String, Optional: true},
+				},
+			},
+		},
+	}
+
+	p := TestLocalProvider(t, b, "test", schema)
+	testStateFile(t, b.StatePath, testRefreshState())
+	p.ReadResourceFn = nil
+	p.ReadResourceResponse = providers.ReadResourceResponse{NewState: cty.ObjectVal(map[string]cty.Value{
+		"id": cty.StringVal("yes"),
+	})}
+
+	// Enable validation
+	b.OpValidation = true
+
+	op, configCleanup := testOperationRefresh(t, "./testdata/refresh-provider-config")
+	defer configCleanup()
+
+	run, err := b.Operation(context.Background(), op)
+	if err != nil {
+		t.Fatalf("bad: %s", err)
+	}
+	<-run.Done()
+
 	if !p.PrepareProviderConfigCalled {
 		t.Fatal("Prepare provider config should be called")
 	}

backend/local/testdata/refresh-provider-config/main.tf

@@ -0,0 +1,7 @@
+resource "test_instance" "foo" {
+    ami = "bar"
+}
+
+provider "test" {
+    value = "foo"
+}

terraform/context_validate_test.go

@@ -595,8 +595,8 @@ func TestContext2Validate_providerConfig_bad(t *testing.T) {
 	}
 }
 
-func TestContext2Validate_providerConfig_badEmpty(t *testing.T) {
+func TestContext2Validate_providerConfig_skippedEmpty(t *testing.T) {
-	m := testModule(t, "validate-bad-pc-empty")
+	m := testModule(t, "validate-skipped-pc-empty")
 	p := testProvider("aws")
 	p.GetSchemaReturn = &ProviderSchema{
 		Provider: &configschema.Block{
@@ -619,12 +619,12 @@ func TestContext2Validate_providerConfig_badEmpty(t *testing.T) {
 	})
 
 	p.PrepareProviderConfigResponse = providers.PrepareProviderConfigResponse{
-		Diagnostics: tfdiags.Diagnostics{}.Append(fmt.Errorf("bad")),
+		Diagnostics: tfdiags.Diagnostics{}.Append(fmt.Errorf("should not be called")),
 	}
 
 	diags := c.Validate()
-	if !diags.HasErrors() {
+	if diags.HasErrors() {
-		t.Fatalf("succeeded; want error")
+		t.Fatalf("unexpected error: %s", diags.Err())
 	}
 }
 

terraform/node_provider.go

@@ -48,6 +48,14 @@ func (n *NodeApplyableProvider) ValidateProvider(ctx EvalContext, provider provi
 
 	configBody := buildProviderConfig(ctx, n.Addr, n.ProviderConfig())
 
+	// if a provider config is empty (only an alias), return early and don't continue
+	// validation. validate doesn't need to fully configure the provider itself, so
+	// skipping a provider with an implied configuration won't prevent other validation from completing.
+	_, noConfigDiags := configBody.Content(&hcl.BodySchema{})
+	if !noConfigDiags.HasErrors() {
+		return nil
+	}
+
 	resp := provider.GetSchema()
 	diags = diags.Append(resp.Diagnostics)
 	if diags.HasErrors() {
@@ -64,19 +72,7 @@ func (n *NodeApplyableProvider) ValidateProvider(ctx EvalContext, provider provi
 
 	configVal, _, evalDiags := ctx.EvaluateBlock(configBody, configSchema, nil, EvalDataForNoInstanceKey)
 	if evalDiags.HasErrors() {
-		if n.Config == nil {
+		return diags.Append(evalDiags)
-			// If there isn't an explicit "provider" block in the configuration,
-			// this error message won't be very clear. Add some detail to the
-			// error message in this case.
-			diags = diags.Append(tfdiags.Sourceless(
-				tfdiags.Error,
-				"Invalid provider configuration",
-				fmt.Sprintf(providerConfigErr, evalDiags.Err(), n.Addr.Provider),
-			))
-			return diags
-		} else {
-			return diags.Append(evalDiags)
-		}
 	}
 	diags = diags.Append(evalDiags)
 

terraform/node_provider_test.go

@@ -196,6 +196,40 @@ func TestNodeApplyableProviderExecute_sensitiveValidate(t *testing.T) {
 	}
 }
 
+func TestNodeApplyableProviderExecute_emptyValidate(t *testing.T) {
+	config := &configs.Provider{
+		Name:   "foo",
+		Config: configs.SynthBody("", map[string]cty.Value{}),
+	}
+	provider := mockProviderWithConfigSchema(&configschema.Block{
+		Attributes: map[string]*configschema.Attribute{
+			"test_string": {
+				Type:     cty.String,
+				Required: true,
+			},
+		},
+	})
+	providerAddr := addrs.AbsProviderConfig{
+		Module:   addrs.RootModule,
+		Provider: addrs.NewDefaultProvider("foo"),
+	}
+
+	n := &NodeApplyableProvider{&NodeAbstractProvider{
+		Addr:   providerAddr,
+		Config: config,
+	}}
+
+	ctx := &MockEvalContext{ProviderProvider: provider}
+	ctx.installSimpleEval()
+	if err := n.Execute(ctx, walkValidate); err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	if ctx.ConfigureProviderCalled {
+		t.Fatal("should not be called")
+	}
+}
+
 func TestNodeApplyableProvider_Validate(t *testing.T) {
 	provider := &MockProvider{
 		GetSchemaReturn: &ProviderSchema{
@@ -233,7 +267,28 @@ func TestNodeApplyableProvider_Validate(t *testing.T) {
 		}
 	})
 
-	t.Run("missing required config", func(t *testing.T) {
+	t.Run("invalid", func(t *testing.T) {
+		config := &configs.Provider{
+			Name: "test",
+			Config: configs.SynthBody("", map[string]cty.Value{
+				"region": cty.MapValEmpty(cty.String),
+			}),
+		}
+
+		node := NodeApplyableProvider{
+			NodeAbstractProvider: &NodeAbstractProvider{
+				Addr:   mustProviderConfig(`provider["registry.terraform.io/hashicorp/aws"]`),
+				Config: config,
+			},
+		}
+
+		diags := node.ValidateProvider(ctx, provider)
+		if !diags.HasErrors() {
+			t.Error("missing expected error with invalid config")
+		}
+	})
+
+	t.Run("empty config", func(t *testing.T) {
 		node := NodeApplyableProvider{
 			NodeAbstractProvider: &NodeAbstractProvider{
 				Addr: mustProviderConfig(`provider["registry.terraform.io/hashicorp/aws"]`),
@@ -241,8 +296,8 @@ func TestNodeApplyableProvider_Validate(t *testing.T) {
 		}
 
 		diags := node.ValidateProvider(ctx, provider)
-		if !diags.HasErrors() {
+		if diags.HasErrors() {
-			t.Error("missing expected error with invalid config")
+			t.Errorf("unexpected error with empty config: %s", diags.Err())
 		}
 	})
 }