POC Option 1B: Specialized REST Upload Stub #13919
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| /* | ||
| * Copyright 2026 Google LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License 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. | ||
| */ | ||
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| package com.google.showcase.v1beta1.stub; | ||
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| import com.google.api.core.BetaApi; | ||
| import com.google.api.gax.core.BackgroundResource; | ||
| import com.google.api.gax.core.BackgroundResourceAggregation; | ||
| import com.google.api.gax.httpjson.ApiMethodDescriptor; | ||
| import com.google.api.gax.httpjson.HttpJsonCallSettings; | ||
| import com.google.api.gax.httpjson.HttpJsonCallableFactory; | ||
| import com.google.api.gax.httpjson.ProtoMessageRequestFormatter; | ||
| import com.google.api.gax.httpjson.ProtoMessageResponseParser; | ||
| import com.google.api.gax.rpc.ClientContext; | ||
| import com.google.api.gax.rpc.ResumableUploadCallable; | ||
| import com.google.showcase.v1beta1.EchoRequest; | ||
| import com.google.showcase.v1beta1.EchoResponse; | ||
| import java.io.IOException; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.concurrent.TimeUnit; | ||
| import javax.annotation.Generated; | ||
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| // AUTO-GENERATED DOCUMENTATION AND CLASS. | ||
| /** | ||
| * REST stub implementation for resumable uploads in the Echo service API. | ||
| * | ||
| * <p>This stub contains only the Scotty resumable upload RPCs and is meant to be instantiated | ||
| * inside both the standard gRPC and HTTP/JSON stubs without incurring the overhead of | ||
| * loading all standard RPC callables. | ||
| */ | ||
| @BetaApi | ||
| @Generated("by gapic-generator-java") | ||
| public class HttpJsonEchoResumableUploadStub extends EchoStub { | ||
| private static final ApiMethodDescriptor<EchoRequest, EchoResponse> | ||
| echoResumableUploadMethodDescriptor = | ||
| ApiMethodDescriptor.<EchoRequest, EchoResponse>newBuilder() | ||
| .setFullMethodName("google.showcase.v1beta1.Echo/EchoResumableUpload") | ||
| .setHttpMethod("POST") | ||
| .setType(ApiMethodDescriptor.MethodType.UNARY) | ||
| .setRequestFormatter( | ||
| ProtoMessageRequestFormatter.<EchoRequest>newBuilder() | ||
| .setPath("/v1beta1/echo:resumable", request -> new HashMap<>()) | ||
| .build()) | ||
| .setResponseParser( | ||
| ProtoMessageResponseParser.<EchoResponse>newBuilder() | ||
| .setDefaultInstance(EchoResponse.getDefaultInstance()) | ||
| .build()) | ||
| .build(); | ||
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| private final ResumableUploadCallable<EchoRequest, EchoResponse> resumableUploadCallable; | ||
| private final BackgroundResource backgroundResources; | ||
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| public static final HttpJsonEchoResumableUploadStub create( | ||
| EchoStubSettings settings, ClientContext clientContext) throws IOException { | ||
| return new HttpJsonEchoResumableUploadStub(settings, clientContext); | ||
| } | ||
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| protected HttpJsonEchoResumableUploadStub(EchoStubSettings settings, ClientContext clientContext) | ||
| throws IOException { | ||
| this.backgroundResources = | ||
| new BackgroundResourceAggregation( | ||
| Collections.singletonList(clientContext.getTransportChannel())); | ||
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| HttpJsonCallSettings<EchoRequest, EchoResponse> resumableUploadTransportSettings = | ||
| HttpJsonCallSettings.<EchoRequest, EchoResponse>newBuilder() | ||
| .setMethodDescriptor(echoResumableUploadMethodDescriptor) | ||
| .build(); | ||
| this.resumableUploadCallable = | ||
| HttpJsonCallableFactory.createResumableUploadCallable( | ||
| resumableUploadTransportSettings, clientContext); | ||
| } | ||
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| @Override | ||
| public ResumableUploadCallable<EchoRequest, EchoResponse> resumableUploadCallable() { | ||
| return resumableUploadCallable; | ||
| } | ||
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| @Override | ||
| public final void close() { | ||
| try { | ||
| backgroundResources.close(); | ||
| } catch (RuntimeException e) { | ||
| throw e; | ||
| } catch (Exception e) { | ||
| throw new IllegalStateException("Failed to close resource", e); | ||
| } | ||
| } | ||
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| @Override | ||
| public void shutdown() { | ||
| backgroundResources.shutdown(); | ||
| } | ||
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| @Override | ||
| public boolean isShutdown() { | ||
| return backgroundResources.isShutdown(); | ||
| } | ||
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| @Override | ||
| public boolean isTerminated() { | ||
| return backgroundResources.isTerminated(); | ||
| } | ||
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| @Override | ||
| public void shutdownNow() { | ||
| backgroundResources.shutdownNow(); | ||
| } | ||
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| @Override | ||
| public boolean awaitTermination(long duration, TimeUnit unit) throws InterruptedException { | ||
| return backgroundResources.awaitTermination(duration, unit); | ||
| } | ||
| } |
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GrpcEchoStubonly initializesuploadStubifclientContext.getCredentials() != null, whereasHttpJsonEchoStubinitializes it unconditionally. This prevents using resumable uploads in local testing or emulator environments where credentials are null. We should initializeuploadStubunconditionally.