fix: update gapic-generator-java with mock service generation fixes (googleapis#904)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 457524730

Source-Link: googleapis/googleapis@917e7f2

Source-Link: https://github.com/googleapis/googleapis-gen/commit/2497f9a069d3f6b2d6810d5a4e239cda1e7e5a39
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMjQ5N2Y5YTA2OWQzZjZiMmQ2ODEwZDVhNGUyMzljZGExZTdlNWEzOSJ9

feat: Enable REST transport for most of Java and Go clients
PiperOrigin-RevId: 456641589

Source-Link: googleapis/googleapis@8a251f5

Source-Link: https://github.com/googleapis/googleapis-gen/commit/4ca52a529cf01308d9714950edffbea3560cfbdb
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNGNhNTJhNTI5Y2YwMTMwOGQ5NzE0OTUwZWRmZmJlYTM1NjBjZmJkYiJ9

chore: Integrate new gapic-generator-java and rules_gapic
PiperOrigin-RevId: 454027580

Source-Link: googleapis/googleapis@1b22277

Source-Link: https://github.com/googleapis/googleapis-gen/commit/e04cea20d0d12eb5c3bdb360a9e72b654edcb638
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiZTA0Y2VhMjBkMGQxMmViNWMzYmRiMzYwYTllNzJiNjU0ZWRjYjYzOCJ9

chore(deps): upgrade gapic-generator-java to 2.8.0 and update gax-java to 2.18.1
PiperOrigin-RevId: 450543911

Source-Link: googleapis/googleapis@5528344

Source-Link: https://github.com/googleapis/googleapis-gen/commit/9f6775cab1958982b88967a43e5e806af0f135db
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiOWY2Nzc1Y2FiMTk1ODk4MmI4ODk2N2E0M2U1ZTgwNmFmMGYxMzVkYiJ9

fix!: BatchAnnotateImagesRequest.requests is required
PiperOrigin-RevId: 447013030

Source-Link: googleapis/googleapis@dfc9737

Source-Link: https://github.com/googleapis/googleapis-gen/commit/a904e05a8ec2c45271a0b18b65e5b43108e72fb6
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiYTkwNGUwNWE4ZWMyYzQ1MjcxYTBiMThiNjVlNWI0MzEwOGU3MmZiNiJ9

fix!: Product search related messages and enums changed in an incompatible way
fix!: NormalizedBoundingPoly message removed

PiperOrigin-RevId: 446837836

Source-Link: googleapis/googleapis@4c8ac5c

Source-Link: https://github.com/googleapis/googleapis-gen/commit/8f7398fbd79a4fb6a4ab1f6a14547852121986fd
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiOGY3Mzk4ZmJkNzlhNGZiNmE0YWIxZjZhMTQ1NDc4NTIxMjE5ODZmZCJ9

fix!: removed fields from SafeSearchAnnotation message
PiperOrigin-RevId: 446836546

Source-Link: googleapis/googleapis@ca17771

Source-Link: https://github.com/googleapis/googleapis-gen/commit/2957b3d78fc24354b30896907de135413b8e7a49
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiMjk1N2IzZDc4ZmMyNDM1NGIzMDg5NjkwN2RlMTM1NDEzYjhlN2E0OSJ9

Author: gcf-owl-bot[bot]

java-vision/google-cloud-vision/pom.xml

@@ -74,6 +74,10 @@
       <groupId>com.google.api</groupId>
       <artifactId>gax-grpc</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.api</groupId>
+      <artifactId>gax-httpjson</artifactId>
+    </dependency>
     <dependency>
       <groupId>org.threeten</groupId>
       <artifactId>threetenbp</artifactId>
@@ -128,12 +132,24 @@
       </exclusions>
     </dependency>
     <!-- Need testing utility classes for generated gRPC clients tests -->
+    <dependency>
+      <groupId>com.google.api</groupId>
+      <artifactId>gax</artifactId>
+      <classifier>testlib</classifier>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>com.google.api</groupId>
       <artifactId>gax-grpc</artifactId>
       <classifier>testlib</classifier>
       <scope>test</scope>
     </dependency>
+    <dependency>
+    <groupId>com.google.api</groupId>
+      <artifactId>gax-httpjson</artifactId>
+      <classifier>testlib</classifier>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <profiles>

java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorClient.java

@@ -18,13 +18,13 @@
 
 import com.google.api.core.BetaApi;
 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.rpc.OperationCallable;
 import com.google.api.gax.rpc.UnaryCallable;
 import com.google.cloud.vision.v1.stub.ImageAnnotatorStub;
 import com.google.cloud.vision.v1.stub.ImageAnnotatorStubSettings;
 import com.google.longrunning.Operation;
-import com.google.longrunning.OperationsClient;
 import java.io.IOException;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
@@ -96,13 +96,28 @@
  * ImageAnnotatorClient imageAnnotatorClient = ImageAnnotatorClient.create(imageAnnotatorSettings);
  * }</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.
+ * ImageAnnotatorSettings imageAnnotatorSettings =
+ *     ImageAnnotatorSettings.newBuilder()
+ *         .setTransportChannelProvider(
+ *             ImageAnnotatorSettings.defaultHttpJsonTransportProviderBuilder().build())
+ *         .build();
+ * ImageAnnotatorClient imageAnnotatorClient = ImageAnnotatorClient.create(imageAnnotatorSettings);
+ * }</pre>
+ *
  * <p>Please refer to the GitHub repository's samples for more quickstart code snippets.
  */
 @Generated("by gapic-generator-java")
 public class ImageAnnotatorClient implements BackgroundResource {
   private final ImageAnnotatorSettings settings;
   private final ImageAnnotatorStub stub;
-  private final OperationsClient operationsClient;
+  private final OperationsClient httpJsonOperationsClient;
+  private final com.google.longrunning.OperationsClient operationsClient;
 
   /** Constructs an instance of ImageAnnotatorClient with default settings. */
   public static final ImageAnnotatorClient create() throws IOException {
@@ -122,7 +137,6 @@ public static final ImageAnnotatorClient create(ImageAnnotatorSettings settings)
    * Constructs an instance of ImageAnnotatorClient, using the given stub for making calls. This is
    * for advanced usage - prefer using create(ImageAnnotatorSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final ImageAnnotatorClient create(ImageAnnotatorStub stub) {
     return new ImageAnnotatorClient(stub);
   }
@@ -135,21 +149,23 @@ public static final ImageAnnotatorClient create(ImageAnnotatorStub stub) {
   protected ImageAnnotatorClient(ImageAnnotatorSettings settings) throws IOException {
     this.settings = settings;
     this.stub = ((ImageAnnotatorStubSettings) 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());
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected ImageAnnotatorClient(ImageAnnotatorStub 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 ImageAnnotatorSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public ImageAnnotatorStub getStub() {
     return stub;
   }
@@ -158,10 +174,19 @@ public ImageAnnotatorStub 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.
+   */
+  @BetaApi
+  public final OperationsClient getHttpJsonOperationsClient() {
+    return httpJsonOperationsClient;
+  }
+
   // AUTO-GENERATED DOCUMENTATION AND METHOD.
   /**
    * Run image detection and annotation for a batch of images.

java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorSettings.java

@@ -21,6 +21,7 @@
 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;
@@ -135,11 +136,18 @@ public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilde
     return ImageAnnotatorStubSettings.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 ImageAnnotatorStubSettings.defaultGrpcTransportProviderBuilder();
   }
 
+  /** Returns a builder for the default REST ChannelProvider for this service. */
+  @BetaApi
+  public static InstantiatingHttpJsonChannelProvider.Builder
+      defaultHttpJsonTransportProviderBuilder() {
+    return ImageAnnotatorStubSettings.defaultHttpJsonTransportProviderBuilder();
+  }
+
   public static TransportChannelProvider defaultTransportChannelProvider() {
     return ImageAnnotatorStubSettings.defaultTransportChannelProvider();
   }
@@ -149,11 +157,17 @@ public static ApiClientHeaderProvider.Builder defaultApiClientHeaderProviderBuil
     return ImageAnnotatorStubSettings.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);
@@ -191,6 +205,11 @@ private static Builder createDefault() {
       return new Builder(ImageAnnotatorStubSettings.newBuilder());
     }
 
+    @BetaApi
+    private static Builder createHttpJsonDefault() {
+      return new Builder(ImageAnnotatorStubSettings.newHttpJsonBuilder());
+    }
+
     public ImageAnnotatorStubSettings.Builder getStubSettingsBuilder() {
       return ((ImageAnnotatorStubSettings.Builder) getStubSettings());
     }