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Java idiomatic client for Stackdriver Trace.
There is a newer version: 2.54.0
/*
 * Copyright 2024 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.
 */

package com.google.cloud.trace.v2.stub;

import com.google.api.gax.core.BackgroundResource;
import com.google.api.gax.core.BackgroundResourceAggregation;
import com.google.api.gax.grpc.GrpcCallSettings;
import com.google.api.gax.grpc.GrpcStubCallableFactory;
import com.google.api.gax.rpc.ClientContext;
import com.google.api.gax.rpc.RequestParamsBuilder;
import com.google.api.gax.rpc.UnaryCallable;
import com.google.devtools.cloudtrace.v2.BatchWriteSpansRequest;
import com.google.devtools.cloudtrace.v2.Span;
import com.google.longrunning.stub.GrpcOperationsStub;
import com.google.protobuf.Empty;
import io.grpc.MethodDescriptor;
import io.grpc.protobuf.ProtoUtils;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import javax.annotation.Generated;

// AUTO-GENERATED DOCUMENTATION AND CLASS.
/**
 * gRPC stub implementation for the TraceService service API.
 *
 * This class is for advanced usage and reflects the underlying API directly.
 */
@Generated("by gapic-generator-java")
public class GrpcTraceServiceStub extends TraceServiceStub {
  private static final MethodDescriptor
      batchWriteSpansMethodDescriptor =
          MethodDescriptor.newBuilder()
              .setType(MethodDescriptor.MethodType.UNARY)
              .setFullMethodName("google.devtools.cloudtrace.v2.TraceService/BatchWriteSpans")
              .setRequestMarshaller(
                  ProtoUtils.marshaller(BatchWriteSpansRequest.getDefaultInstance()))
              .setResponseMarshaller(ProtoUtils.marshaller(Empty.getDefaultInstance()))
              .build();

  private static final MethodDescriptor createSpanMethodDescriptor =
      MethodDescriptor.newBuilder()
          .setType(MethodDescriptor.MethodType.UNARY)
          .setFullMethodName("google.devtools.cloudtrace.v2.TraceService/CreateSpan")
          .setRequestMarshaller(ProtoUtils.marshaller(Span.getDefaultInstance()))
          .setResponseMarshaller(ProtoUtils.marshaller(Span.getDefaultInstance()))
          .build();

  private final UnaryCallable batchWriteSpansCallable;
  private final UnaryCallable createSpanCallable;

  private final BackgroundResource backgroundResources;
  private final GrpcOperationsStub operationsStub;
  private final GrpcStubCallableFactory callableFactory;

  public static final GrpcTraceServiceStub create(TraceServiceStubSettings settings)
      throws IOException {
    return new GrpcTraceServiceStub(settings, ClientContext.create(settings));
  }

  public static final GrpcTraceServiceStub create(ClientContext clientContext) throws IOException {
    return new GrpcTraceServiceStub(TraceServiceStubSettings.newBuilder().build(), clientContext);
  }

  public static final GrpcTraceServiceStub create(
      ClientContext clientContext, GrpcStubCallableFactory callableFactory) throws IOException {
    return new GrpcTraceServiceStub(
        TraceServiceStubSettings.newBuilder().build(), clientContext, callableFactory);
  }

  /**
   * Constructs an instance of GrpcTraceServiceStub, using the given settings. This is protected so
   * that it is easy to make a subclass, but otherwise, the static factory methods should be
   * preferred.
   */
  protected GrpcTraceServiceStub(TraceServiceStubSettings settings, ClientContext clientContext)
      throws IOException {
    this(settings, clientContext, new GrpcTraceServiceCallableFactory());
  }

  /**
   * Constructs an instance of GrpcTraceServiceStub, using the given settings. This is protected so
   * that it is easy to make a subclass, but otherwise, the static factory methods should be
   * preferred.
   */
  protected GrpcTraceServiceStub(
      TraceServiceStubSettings settings,
      ClientContext clientContext,
      GrpcStubCallableFactory callableFactory)
      throws IOException {
    this.callableFactory = callableFactory;
    this.operationsStub = GrpcOperationsStub.create(clientContext, callableFactory);

    GrpcCallSettings batchWriteSpansTransportSettings =
        GrpcCallSettings.newBuilder()
            .setMethodDescriptor(batchWriteSpansMethodDescriptor)
            .setParamsExtractor(
                request -> {
                  RequestParamsBuilder builder = RequestParamsBuilder.create();
                  builder.add("name", String.valueOf(request.getName()));
                  return builder.build();
                })
            .build();
    GrpcCallSettings createSpanTransportSettings =
        GrpcCallSettings.newBuilder()
            .setMethodDescriptor(createSpanMethodDescriptor)
            .setParamsExtractor(
                request -> {
                  RequestParamsBuilder builder = RequestParamsBuilder.create();
                  builder.add("name", String.valueOf(request.getName()));
                  return builder.build();
                })
            .build();

    this.batchWriteSpansCallable =
        callableFactory.createUnaryCallable(
            batchWriteSpansTransportSettings, settings.batchWriteSpansSettings(), clientContext);
    this.createSpanCallable =
        callableFactory.createUnaryCallable(
            createSpanTransportSettings, settings.createSpanSettings(), clientContext);

    this.backgroundResources =
        new BackgroundResourceAggregation(clientContext.getBackgroundResources());
  }

  public GrpcOperationsStub getOperationsStub() {
    return operationsStub;
  }

  @Override
  public UnaryCallable batchWriteSpansCallable() {
    return batchWriteSpansCallable;
  }

  @Override
  public UnaryCallable createSpanCallable() {
    return createSpanCallable;
  }

  @Override
  public final void close() {
    try {
      backgroundResources.close();
    } catch (RuntimeException e) {
      throw e;
    } catch (Exception e) {
      throw new IllegalStateException("Failed to close resource", e);
    }
  }

  @Override
  public void shutdown() {
    backgroundResources.shutdown();
  }

  @Override
  public boolean isShutdown() {
    return backgroundResources.isShutdown();
  }

  @Override
  public boolean isTerminated() {
    return backgroundResources.isTerminated();
  }

  @Override
  public void shutdownNow() {
    backgroundResources.shutdownNow();
  }

  @Override
  public boolean awaitTermination(long duration, TimeUnit unit) throws InterruptedException {
    return backgroundResources.awaitTermination(duration, unit);
  }
}