Add AuthSchemeProvider marker interface

This is needed for setting authSchemeProvider client configuration option.

Author: gosar

codegen/src/main/java/software/amazon/awssdk/codegen/poet/authscheme/AuthSchemeProviderSpec.java

@@ -27,6 +27,7 @@
 import software.amazon.awssdk.codegen.model.intermediate.IntermediateModel;
 import software.amazon.awssdk.codegen.poet.ClassSpec;
 import software.amazon.awssdk.codegen.poet.PoetUtils;
+import software.amazon.awssdk.http.auth.spi.AuthSchemeProvider;
 import software.amazon.awssdk.http.auth.spi.HttpAuthOption;
 
 public class AuthSchemeProviderSpec implements ClassSpec {
@@ -46,7 +47,7 @@ public ClassName className() {
     @Override
     public TypeSpec poetSpec() {
         return PoetUtils.createInterfaceBuilder(className())
-                        // .addSuperinterface(EndpointProvider.class) // TODO: reviewer: do we want a marker interface?
+                        .addSuperinterface(AuthSchemeProvider.class)
                         .addModifiers(Modifier.PUBLIC)
                         .addAnnotation(SdkPublicApi.class)
                         .addJavadoc(interfaceJavadoc())

codegen/src/test/resources/software/amazon/awssdk/codegen/poet/authscheme/auth-scheme-provider.java

@@ -4,17 +4,17 @@
 import java.util.function.Consumer;
 import software.amazon.awssdk.annotations.Generated;
 import software.amazon.awssdk.annotations.SdkPublicApi;
+import software.amazon.awssdk.http.auth.spi.AuthSchemeProvider;
 import software.amazon.awssdk.http.auth.spi.HttpAuthOption;
 import software.amazon.awssdk.services.query.authscheme.internal.DefaultQueryAuthSchemeProvider;
 
-
 /**
  * An auth scheme provider for Query. The auth scheme provider takes a set of parameters using
  * {@link QueryAuthSchemeParams}, and resolves a list of {@link HttpAuthOption} based on the given parameters.
  */
 @Generated("software.amazon.awssdk:codegen")
 @SdkPublicApi
-public interface QueryAuthSchemeProvider {
+public interface QueryAuthSchemeProvider extends AuthSchemeProvider {
     /**
      * Resolve the auth schemes based on the given set of parameters.
      */

core/http-auth-spi/src/main/java/software/amazon/awssdk/http/auth/spi/AuthSchemeProvider.java

@@ -0,0 +1,26 @@
+/*
+ * 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.awssdk.http.auth.spi;
+
+import software.amazon.awssdk.annotations.SdkPublicApi;
+
+/**
+ * A marker interface for an auth scheme provider. An auth scheme provider takes as input a set of service-specific parameters,
+ * and resolves a list of {@link HttpAuthOption} based on the given parameters.
+ */
+@SdkPublicApi
+public interface AuthSchemeProvider {
+}