Add customizations hook

codegen/smithy-ruby-codegen-test/build.gradle.kts

@@ -146,22 +146,29 @@ tasks.register("generate-smithy-build") {
     }
 }
 
-
 tasks.register<Copy>("copyWhiteLabelGem") {
+    val src = "$buildDir/smithyprojections/smithy-ruby-codegen-test/white-label/ruby-codegen"
+    val dest = "$buildDir/../../projections/"
+    val customizations = "white_label/lib/white_label/customizations.rb"
     mustRunAfter("copyIntegrationSpecs")
-    from("$buildDir/smithyprojections/smithy-ruby-codegen-test/white-label/ruby-codegen")
-    into("$buildDir/../../projections/")
+    from(src) {
+        if (file(dest + customizations).exists()) {
+            exclude(customizations)
+        }
+    }
+    into(dest)
 }
 
 tasks.register<Copy>("copyRpcv2CborGem") {
-    mustRunAfter("copyIntegrationSpecs")
-    from("$buildDir/smithyprojections/smithy-ruby-codegen-test/rpcv2cbor/ruby-codegen")
-    into("$buildDir/../../projections/")
-}
-
-tasks.register<Delete>("cleanProjections") {
-    delete("$buildDir/../../projections/white_label/")
-    delete("$buildDir/../../projections/rpcv2_cbor/")
+    val src = "$buildDir/smithyprojections/smithy-ruby-codegen-test/rpcv2cbor/ruby-codegen"
+    val dest = "$buildDir/../../projections/"
+    val customizations = "rpcv2_cbor/lib/rpcv2_cbor/customizations.rb"
+    from(src) {
+        if (file(dest + customizations).exists()) {
+            exclude(customizations)
+        }
+    }
+    into(dest)
 }
 
 tasks.register<Copy>("copyIntegrationSpecs") {
@@ -176,14 +183,13 @@ tasks.create<SmithyBuild>("buildSdk") {
 }.dependsOn(tasks["generate-smithy-build"])
 
 tasks["build"]
-        .dependsOn(
-                // tasks["cleanProjections"],
-                tasks["buildSdk"])
+        .dependsOn(tasks["buildSdk"])
         .finalizedBy(
                 tasks["copyIntegrationSpecs"],
                 tasks["copyWhiteLabelGem"],
                 tasks["copyRpcv2CborGem"]
         )
+
 java.sourceSets["main"].java {
     srcDirs("model", "src/main/smithy")
 }

codegen/smithy-ruby-codegen-test/integration-specs/customizations_spec.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require_relative 'spec_helper'
+
+module WhiteLabel
+  describe Customization do
+    describe '#customization?' do
+      it 'exists and returns true' do
+        expect(Customization.customization?).to eq(true)
+      end
+    end
+  end
+end

codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/DirectedRubyCodegen.java

@@ -40,6 +40,7 @@
 import software.amazon.smithy.ruby.codegen.generators.AuthGenerator;
 import software.amazon.smithy.ruby.codegen.generators.ClientGenerator;
 import software.amazon.smithy.ruby.codegen.generators.ConfigGenerator;
+import software.amazon.smithy.ruby.codegen.generators.CustomizationsGenerator;
 import software.amazon.smithy.ruby.codegen.generators.EndpointGenerator;
 import software.amazon.smithy.ruby.codegen.generators.EventStreamGenerator;
 import software.amazon.smithy.ruby.codegen.generators.GemspecGenerator;
@@ -182,6 +183,9 @@ public void generateService(GenerateServiceDirective<GenerationContext, RubySett
         GlobalConfigPluginGenerator globalConfigPluginGenerator = new GlobalConfigPluginGenerator(directive);
         globalConfigPluginGenerator.render();
 
+        CustomizationsGenerator customizationsGenerator = new CustomizationsGenerator(directive);
+        customizationsGenerator.render();
+
         MiddlewareGenerator middlewareGenerator = new MiddlewareGenerator(directive, middlewareBuilder);
         middlewareGenerator.render();
 

codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/generators/CustomizationsGenerator.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package software.amazon.smithy.ruby.codegen.generators;
+
+import java.util.logging.Logger;
+import software.amazon.smithy.codegen.core.directed.ContextualDirective;
+import software.amazon.smithy.ruby.codegen.GenerationContext;
+import software.amazon.smithy.ruby.codegen.RubySettings;
+import software.amazon.smithy.utils.SmithyInternalApi;
+
+@SmithyInternalApi
+public class CustomizationsGenerator extends RubyGeneratorBase {
+    private static final Logger LOGGER =
+            Logger.getLogger(CustomizationsGenerator.class.getName());
+
+    public CustomizationsGenerator(ContextualDirective<GenerationContext, RubySettings> directive) {
+        super(directive);
+    }
+
+    @Override
+    protected String getModule() {
+        return "Customizations";
+    }
+
+    public void render() {
+        write(writer -> {
+            writer
+                    .write("# frozen_string_literal: true")
+                    .write("");
+        });
+        LOGGER.fine("Wrote customizations to " + rbFile());
+    }
+}

codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/generators/ModuleGenerator.java

@@ -32,7 +32,7 @@ public class ModuleGenerator {
             Logger.getLogger(ModuleGenerator.class.getName());
 
     private static final String[] DEFAULT_REQUIRES = {
-        "auth", "builders", "client", "config", "errors", "endpoint", "middleware",
+        "auth", "builders", "client", "config", "customizations", "errors", "endpoint", "middleware",
         "paginators", "params", "parsers", "stubs", "telemetry", "types", "validators", "waiters"
     };
 

hearth/spec/hearth/middleware/endpoint_spec.rb

@@ -59,7 +59,7 @@ class TestEndpointInput
         end
         let(:params) { double }
 
-        before(:each) do
+        before do
           expect(param_builder).to receive(:build)
             .with({ config1: config1,
                     config2: config2 }, input, context).and_return(params)