feat: Enable REST transport for most of Java and Go clients

google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersClient.java

@@ -19,6 +19,7 @@
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.gax.core.BackgroundResource;
+import com.google.api.gax.httpjson.longrunning.OperationsClient;
 import com.google.api.gax.longrunning.OperationFuture;
 import com.google.api.gax.paging.AbstractFixedSizeCollection;
 import com.google.api.gax.paging.AbstractPage;
@@ -30,7 +31,6 @@
 import com.google.cloud.gkemulticloud.v1.stub.AwsClustersStubSettings;
 import com.google.common.util.concurrent.MoreExecutors;
 import com.google.longrunning.Operation;
-import com.google.longrunning.OperationsClient;
 import com.google.protobuf.Empty;
 import com.google.protobuf.FieldMask;
 import java.io.IOException;
@@ -103,13 +103,28 @@
  * AwsClustersClient awsClustersClient = AwsClustersClient.create(awsClustersSettings);
  * }</pre>
  *
+ * <p>To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over
+ * the wire:
+ *
+ * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
+ * AwsClustersSettings awsClustersSettings =
+ *     AwsClustersSettings.newBuilder()
+ *         .setTransportChannelProvider(
+ *             AwsClustersSettings.defaultHttpJsonTransportProviderBuilder().build())
+ *         .build();
+ * AwsClustersClient awsClustersClient = AwsClustersClient.create(awsClustersSettings);
+ * }</pre>
+ *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
 @Generated("by gapic-generator-java")
 public class AwsClustersClient implements BackgroundResource {
   private final AwsClustersSettings settings;
   private final AwsClustersStub stub;
-  private final OperationsClient operationsClient;
+  private final OperationsClient httpJsonOperationsClient;
+  private final com.google.longrunning.OperationsClient operationsClient;
 
   /** Constructs an instance of AwsClustersClient with default settings. */
   public static final AwsClustersClient create() throws IOException {
@@ -140,13 +155,17 @@ public static final AwsClustersClient create(AwsClustersStub stub) {
   protected AwsClustersClient(AwsClustersSettings settings) throws IOException {
     this.settings = settings;
     this.stub = ((AwsClustersStubSettings) settings.getStubSettings()).createStub();
-    this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
+    this.operationsClient =
+        com.google.longrunning.OperationsClient.create(this.stub.getOperationsStub());
+    this.httpJsonOperationsClient = OperationsClient.create(this.stub.getHttpJsonOperationsStub());
   }
 
   protected AwsClustersClient(AwsClustersStub stub) {
     this.settings = null;
     this.stub = stub;
-    this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
+    this.operationsClient =
+        com.google.longrunning.OperationsClient.create(this.stub.getOperationsStub());
+    this.httpJsonOperationsClient = OperationsClient.create(this.stub.getHttpJsonOperationsStub());
   }
 
   public final AwsClustersSettings getSettings() {
@@ -161,10 +180,18 @@ public AwsClustersStub getStub() {
    * Returns the OperationsClient that can be used to query the status of a long-running operation
    * returned by another API method call.
    */
-  public final OperationsClient getOperationsClient() {
+  public final com.google.longrunning.OperationsClient getOperationsClient() {
     return operationsClient;
   }
 
+  /**
+   * Returns the OperationsClient that can be used to query the status of a long-running operation
+   * returned by another API method call.
+   */
+  public final OperationsClient getHttpJsonOperationsClient() {
+    return httpJsonOperationsClient;
+  }
+
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Creates a new [AwsCluster][google.cloud.gkemulticloud.v1.AwsCluster] resource on a given GCP

google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AwsClustersSettings.java

@@ -24,6 +24,7 @@
 import com.google.api.gax.core.GoogleCredentialsProvider;
 import com.google.api.gax.core.InstantiatingExecutorProvider;
 import com.google.api.gax.grpc.InstantiatingGrpcChannelProvider;
+import com.google.api.gax.httpjson.InstantiatingHttpJsonChannelProvider;
 import com.google.api.gax.rpc.ApiClientHeaderProvider;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.ClientSettings;
@@ -200,11 +201,18 @@ public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilde
     return AwsClustersStubSettings.defaultCredentialsProviderBuilder();
   }
 
-  /** Returns a builder for the default ChannelProvider for this service. */
+  /** Returns a builder for the default gRPC ChannelProvider for this service. */
   public static InstantiatingGrpcChannelProvider.Builder defaultGrpcTransportProviderBuilder() {
     return AwsClustersStubSettings.defaultGrpcTransportProviderBuilder();
   }
 
+  /** Returns a builder for the default REST ChannelProvider for this service. */
+  @BetaApi
+  public static InstantiatingHttpJsonChannelProvider.Builder
+      defaultHttpJsonTransportProviderBuilder() {
+    return AwsClustersStubSettings.defaultHttpJsonTransportProviderBuilder();
+  }
+
   public static TransportChannelProvider defaultTransportChannelProvider() {
     return AwsClustersStubSettings.defaultTransportChannelProvider();
   }
@@ -214,11 +222,17 @@ public static ApiClientHeaderProvider.Builder defaultApiClientHeaderProviderBuil
     return AwsClustersStubSettings.defaultApiClientHeaderProviderBuilder();
   }
 
-  /** Returns a new builder for this class. */
+  /** Returns a new gRPC builder for this class. */
   public static Builder newBuilder() {
     return Builder.createDefault();
   }
 
+  /** Returns a new REST builder for this class. */
+  @BetaApi
+  public static Builder newHttpJsonBuilder() {
+    return Builder.createHttpJsonDefault();
+  }
+
   /** Returns a new builder for this class. */
   public static Builder newBuilder(ClientContext clientContext) {
     return new Builder(clientContext);
@@ -256,6 +270,11 @@ private static Builder createDefault() {
       return new Builder(AwsClustersStubSettings.newBuilder());
     }
 
+    @BetaApi
+    private static Builder createHttpJsonDefault() {
+      return new Builder(AwsClustersStubSettings.newHttpJsonBuilder());
+    }
+
     public AwsClustersStubSettings.Builder getStubSettingsBuilder() {
       return ((AwsClustersStubSettings.Builder) getStubSettings());
     }

google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersClient.java

@@ -19,6 +19,7 @@
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.gax.core.BackgroundResource;
+import com.google.api.gax.httpjson.longrunning.OperationsClient;
 import com.google.api.gax.longrunning.OperationFuture;
 import com.google.api.gax.paging.AbstractFixedSizeCollection;
 import com.google.api.gax.paging.AbstractPage;
@@ -30,7 +31,6 @@
 import com.google.cloud.gkemulticloud.v1.stub.AzureClustersStubSettings;
 import com.google.common.util.concurrent.MoreExecutors;
 import com.google.longrunning.Operation;
-import com.google.longrunning.OperationsClient;
 import com.google.protobuf.Empty;
 import com.google.protobuf.FieldMask;
 import java.io.IOException;
@@ -103,13 +103,28 @@
  * AzureClustersClient azureClustersClient = AzureClustersClient.create(azureClustersSettings);
  * }</pre>
  *
+ * <p>To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over
+ * the wire:
+ *
+ * <pre>{@code
+ * // This snippet has been automatically generated for illustrative purposes only.
+ * // It may require modifications to work in your environment.
+ * AzureClustersSettings azureClustersSettings =
+ *     AzureClustersSettings.newBuilder()
+ *         .setTransportChannelProvider(
+ *             AzureClustersSettings.defaultHttpJsonTransportProviderBuilder().build())
+ *         .build();
+ * AzureClustersClient azureClustersClient = AzureClustersClient.create(azureClustersSettings);
+ * }</pre>
+ *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
 @Generated("by gapic-generator-java")
 public class AzureClustersClient implements BackgroundResource {
   private final AzureClustersSettings settings;
   private final AzureClustersStub stub;
-  private final OperationsClient operationsClient;
+  private final OperationsClient httpJsonOperationsClient;
+  private final com.google.longrunning.OperationsClient operationsClient;
 
   /** Constructs an instance of AzureClustersClient with default settings. */
   public static final AzureClustersClient create() throws IOException {
@@ -141,13 +156,17 @@ public static final AzureClustersClient create(AzureClustersStub stub) {
   protected AzureClustersClient(AzureClustersSettings settings) throws IOException {
     this.settings = settings;
     this.stub = ((AzureClustersStubSettings) settings.getStubSettings()).createStub();
-    this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
+    this.operationsClient =
+        com.google.longrunning.OperationsClient.create(this.stub.getOperationsStub());
+    this.httpJsonOperationsClient = OperationsClient.create(this.stub.getHttpJsonOperationsStub());
   }
 
   protected AzureClustersClient(AzureClustersStub stub) {
     this.settings = null;
     this.stub = stub;
-    this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
+    this.operationsClient =
+        com.google.longrunning.OperationsClient.create(this.stub.getOperationsStub());
+    this.httpJsonOperationsClient = OperationsClient.create(this.stub.getHttpJsonOperationsStub());
   }
 
   public final AzureClustersSettings getSettings() {
@@ -162,10 +181,18 @@ public AzureClustersStub getStub() {
    * Returns the OperationsClient that can be used to query the status of a long-running operation
    * returned by another API method call.
    */
-  public final OperationsClient getOperationsClient() {
+  public final com.google.longrunning.OperationsClient getOperationsClient() {
     return operationsClient;
   }
 
+  /**
+   * Returns the OperationsClient that can be used to query the status of a long-running operation
+   * returned by another API method call.
+   */
+  public final OperationsClient getHttpJsonOperationsClient() {
+    return httpJsonOperationsClient;
+  }
+
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Creates a new [AzureClient][google.cloud.gkemulticloud.v1.AzureClient] resource on a given

google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/AzureClustersSettings.java

@@ -25,6 +25,7 @@
 import com.google.api.gax.core.GoogleCredentialsProvider;
 import com.google.api.gax.core.InstantiatingExecutorProvider;
 import com.google.api.gax.grpc.InstantiatingGrpcChannelProvider;
+import com.google.api.gax.httpjson.InstantiatingHttpJsonChannelProvider;
 import com.google.api.gax.rpc.ApiClientHeaderProvider;
 import com.google.api.gax.rpc.ClientContext;
 import com.google.api.gax.rpc.ClientSettings;
@@ -236,11 +237,18 @@ public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilde
     return AzureClustersStubSettings.defaultCredentialsProviderBuilder();
   }
 
-  /** Returns a builder for the default ChannelProvider for this service. */
+  /** Returns a builder for the default gRPC ChannelProvider for this service. */
   public static InstantiatingGrpcChannelProvider.Builder defaultGrpcTransportProviderBuilder() {
     return AzureClustersStubSettings.defaultGrpcTransportProviderBuilder();
   }
 
+  /** Returns a builder for the default REST ChannelProvider for this service. */
+  @BetaApi
+  public static InstantiatingHttpJsonChannelProvider.Builder
+      defaultHttpJsonTransportProviderBuilder() {
+    return AzureClustersStubSettings.defaultHttpJsonTransportProviderBuilder();
+  }
+
   public static TransportChannelProvider defaultTransportChannelProvider() {
     return AzureClustersStubSettings.defaultTransportChannelProvider();
   }
@@ -250,11 +258,17 @@ public static ApiClientHeaderProvider.Builder defaultApiClientHeaderProviderBuil
     return AzureClustersStubSettings.defaultApiClientHeaderProviderBuilder();
   }
 
-  /** Returns a new builder for this class. */
+  /** Returns a new gRPC builder for this class. */
   public static Builder newBuilder() {
     return Builder.createDefault();
   }
 
+  /** Returns a new REST builder for this class. */
+  @BetaApi
+  public static Builder newHttpJsonBuilder() {
+    return Builder.createHttpJsonDefault();
+  }
+
   /** Returns a new builder for this class. */
   public static Builder newBuilder(ClientContext clientContext) {
     return new Builder(clientContext);
@@ -292,6 +306,11 @@ private static Builder createDefault() {
       return new Builder(AzureClustersStubSettings.newBuilder());
     }
 
+    @BetaApi
+    private static Builder createHttpJsonDefault() {
+      return new Builder(AzureClustersStubSettings.newHttpJsonBuilder());
+    }
+
     public AzureClustersStubSettings.Builder getStubSettingsBuilder() {
       return ((AzureClustersStubSettings.Builder) getStubSettings());
     }

google-cloud-gke-multi-cloud/src/main/java/com/google/cloud/gkemulticloud/v1/stub/AwsClustersStub.java

@@ -56,7 +56,11 @@
 public abstract class AwsClustersStub implements BackgroundResource {
 
   public OperationsStub getOperationsStub() {
-    throw new UnsupportedOperationException("Not implemented: getOperationsStub()");
+    return null;
+  }
+
+  public com.google.api.gax.httpjson.longrunning.stub.OperationsStub getHttpJsonOperationsStub() {
+    return null;
   }
 
   public OperationCallable<CreateAwsClusterRequest, AwsCluster, OperationMetadata>