CKFVS Fix

codegen/smithy-aws-go-codegen/src/main/java/software/amazon/smithy/aws/go/codegen/customization/CloudFrontKVSSigV4a.java

@@ -0,0 +1,148 @@
+package software.amazon.smithy.aws.go.codegen.customization;
+
+import java.util.List;
+import java.util.ArrayList;
+import software.amazon.smithy.aws.go.codegen.AddAwsConfigFields;
+import software.amazon.smithy.aws.go.codegen.AwsGoDependency;
+import software.amazon.smithy.aws.go.codegen.AwsSignatureVersion4;
+import software.amazon.smithy.aws.go.codegen.AwsSignatureVersion4aUtils;
+import software.amazon.smithy.aws.traits.ServiceTrait;
+import software.amazon.smithy.aws.traits.auth.SigV4ATrait;
+import software.amazon.smithy.aws.traits.auth.SigV4Trait;
+import software.amazon.smithy.codegen.core.Symbol;
+import software.amazon.smithy.codegen.core.SymbolProvider;
+import software.amazon.smithy.go.codegen.GoDelegator;
+import software.amazon.smithy.go.codegen.GoSettings;
+import software.amazon.smithy.go.codegen.GoWriter;
+import software.amazon.smithy.go.codegen.SmithyGoDependency;
+import software.amazon.smithy.go.codegen.SymbolUtils;
+import software.amazon.smithy.go.codegen.integration.ConfigField;
+import software.amazon.smithy.go.codegen.integration.ConfigFieldResolver;
+import software.amazon.smithy.go.codegen.integration.GoIntegration;
+import software.amazon.smithy.go.codegen.integration.MiddlewareRegistrar;
+import software.amazon.smithy.go.codegen.integration.RuntimeClientPlugin;
+import software.amazon.smithy.model.Model;
+import software.amazon.smithy.model.shapes.ServiceShape;
+import software.amazon.smithy.model.traits.AuthTrait;
+import software.amazon.smithy.utils.ListUtils;
+import software.amazon.smithy.utils.SetUtils;
+
+/**
+ * This integration configures the CloudFront Key Value Store client for Signature Version 4a
+ */
+public class CloudFrontKVSSigV4a implements GoIntegration {
+    /**
+     * Return true if service is CFKVS.
+     *
+     * @param model   is the generation model.
+     * @param service is the service shape being audited.
+     */
+    private static boolean isCFKVSService(Model model, ServiceShape service) {
+        final String sdkId = service.expectTrait(ServiceTrait.class).getSdkId();
+        final String serviceId = sdkId.replace("-", "").replace(" ", "").toLowerCase();
+        return serviceId.equalsIgnoreCase("cloudfrontkeyvaluestore");
+    }
+
+    private final List<RuntimeClientPlugin> runtimeClientPlugins = new ArrayList<>();
+
+
+    @Override
+    public List<RuntimeClientPlugin> getClientPlugins() {
+        return runtimeClientPlugins;
+    }
+
+    @Override
+    public Model preprocessModel(Model model, GoSettings settings) {
+        ServiceShape service = settings.getService(model);
+        if (!isCFKVSService(model, service)) {
+            return model;
+        }
+
+        if (settings.getService(model).hasTrait(SigV4ATrait.class)) {
+            return model;
+        }
+
+        var v4a = SigV4ATrait.builder()
+                .name(service.expectTrait(SigV4Trait.class).getName())
+                .build();
+
+        return model.toBuilder()
+                .addShape(
+                        service.toBuilder()
+                                .addTrait(v4a)
+                                // FUTURE: https://github.com/aws/smithy-go/issues/493
+                                // we are keeping sigv4 at the end of this list (it will never be selected)
+                                // as a stopgap to drive codegen of payload checksum routines
+                                .addTrait(new AuthTrait(SetUtils.of(SigV4ATrait.ID, SigV4Trait.ID)))
+                                .build()
+                )
+                .build();
+    }
+
+    @Override
+    public void processFinalizedModel(GoSettings settings, Model model) {
+        if (!isCFKVSService(model, settings.getService(model))) {
+            return;
+        }
+        runtimeClientPlugins.add(
+                RuntimeClientPlugin.builder()
+                    .configFields(
+                        ListUtils.of(
+                                ConfigField.builder()
+                                        .name(AwsSignatureVersion4aUtils.V4A_SIGNER_INTERFACE_NAME)
+                                        .type(SymbolUtils.buildPackageSymbol(
+                                            AwsSignatureVersion4aUtils.V4A_SIGNER_INTERFACE_NAME)
+                                        )
+                                        .documentation("Signature Version 4a (SigV4a) Signer")
+                                        .build()
+                        )
+                    )
+                    .build());
+        runtimeClientPlugins.add(
+                RuntimeClientPlugin.builder()
+                    .servicePredicate(CloudFrontKVSSigV4a::isCFKVSService)
+                    .addConfigFieldResolver(
+                            ConfigFieldResolver.builder()
+                                    .location(ConfigFieldResolver.Location.CLIENT)
+                                    .target(ConfigFieldResolver.Target.INITIALIZATION)
+                                    .resolver(SymbolUtils.createValueSymbolBuilder(
+                                            AwsSignatureVersion4aUtils.SIGNER_RESOLVER).build())
+                                    .build())
+                    .build());
+    }
+
+    @Override
+    public void writeAdditionalFiles(
+            GoSettings settings,
+            Model model,
+            SymbolProvider symbolProvider,
+            GoDelegator goDelegator
+    ) {
+
+        if (!isCFKVSService(model, model.expectShape(settings.getService(), ServiceShape.class))) {
+            return;
+        }
+
+        ServiceShape serviceShape = settings.getService(model);
+        goDelegator.useShapeWriter(serviceShape, writer -> {
+            writerSignerInterface(writer);
+            writerConfigFieldResolver(writer, serviceShape);
+            writeNewV4ASignerFunc(writer, serviceShape);
+        });
+
+    }
+
+
+    private void writerSignerInterface(GoWriter writer) {
+        AwsSignatureVersion4aUtils.writerSignerInterface(writer);
+    }
+
+    private void writeNewV4ASignerFunc(GoWriter writer, ServiceShape serviceShape) {
+        AwsSignatureVersion4aUtils.writeNewV4ASignerFunc(writer, serviceShape);
+    }
+
+    private void writerConfigFieldResolver(GoWriter writer, ServiceShape serviceShape) {
+        AwsSignatureVersion4aUtils.writerConfigFieldResolver(writer, serviceShape);
+    }
+
+}

codegen/smithy-aws-go-codegen/src/main/java/software/amazon/smithy/aws/go/codegen/customization/auth/BackfillSigV4ATrait.java

@@ -41,6 +41,10 @@ public Model preprocessModel(Model model, GoSettings settings) {
             return model;
         }
 
+        if (settings.getService(model).hasTrait(SigV4ATrait.class)) {
+            return model;
+        }
+
         var v4a = SigV4ATrait.builder()
                 .name(service.expectTrait(SigV4Trait.class).getName())
                 .build();

codegen/smithy-aws-go-codegen/src/main/resources/META-INF/services/software.amazon.smithy.go.codegen.integration.GoIntegration

@@ -73,3 +73,4 @@ software.amazon.smithy.aws.go.codegen.customization.auth.S3ExpressAuthScheme
 software.amazon.smithy.aws.go.codegen.customization.S3BucketContext
 software.amazon.smithy.aws.go.codegen.customization.s3.ExpressDefaultChecksum
 software.amazon.smithy.aws.go.codegen.customization.auth.GlobalAnonymousOption
+software.amazon.smithy.aws.go.codegen.customization.CloudFrontKVSSigV4a

service/cloudfrontkeyvaluestore/generated.json

@@ -3,6 +3,7 @@
         "github.com/aws/aws-sdk-go-v2": "v1.4.0",
         "github.com/aws/aws-sdk-go-v2/internal/configsources": "v0.0.0-00010101000000-000000000000",
         "github.com/aws/aws-sdk-go-v2/internal/endpoints/v2": "v2.0.0-00010101000000-000000000000",
+        "github.com/aws/aws-sdk-go-v2/internal/v4a": "v0.0.0-00010101000000-000000000000",
         "github.com/aws/smithy-go": "v1.4.0",
         "github.com/google/go-cmp": "v0.5.4"
     },

service/cloudfrontkeyvaluestore/go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/aws/aws-sdk-go-v2 v1.24.1
 	github.com/aws/aws-sdk-go-v2/internal/configsources v1.2.10
 	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.5.10
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.2.10
 	github.com/aws/smithy-go v1.19.0
 	github.com/google/go-cmp v0.5.8
 )
@@ -15,3 +16,5 @@ replace github.com/aws/aws-sdk-go-v2 => ../../
 replace github.com/aws/aws-sdk-go-v2/internal/configsources => ../../internal/configsources/
 
 replace github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 => ../../internal/endpoints/v2/
+
+replace github.com/aws/aws-sdk-go-v2/internal/v4a => ../../internal/v4a/