content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   *
   *     http://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 org.apache.beam.runners.fnexecution.provisioning;
  
  import static org.apache.beam.model.fnexecution.v1.ProvisionApi.GetProvisionInfoResponse;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  import org.apache.beam.model.fnexecution.v1.ProvisionApi;
  import org.apache.beam.model.fnexecution.v1.ProvisionApi.ProvisionInfo;
  import org.apache.beam.model.fnexecution.v1.ProvisionServiceGrpc;
  import org.apache.beam.model.fnexecution.v1.ProvisionServiceGrpc.ProvisionServiceImplBase;
  import org.apache.beam.model.pipeline.v1.RunnerApi;
  import org.apache.beam.sdk.fn.server.FnService;
  import org.apache.beam.sdk.fn.server.HeaderAccessor;
  import org.apache.beam.vendor.grpc.v1p69p0.io.grpc.stub.StreamObserver;
  
  /**
   * A {@link ProvisionServiceImplBase provision service} that returns a static response to all calls.
   */
  @SuppressWarnings({
    "nullness" // TODO(https://github.com/apache/beam/issues/20497)
  })
  public class StaticGrpcProvisionService extends ProvisionServiceGrpc.ProvisionServiceImplBase
      implements FnService {
    public static StaticGrpcProvisionService create(
        ProvisionInfo info, HeaderAccessor headerAccessor) {
      return new StaticGrpcProvisionService(info, headerAccessor);
    }
  
    private final ProvisionInfo info;
  
    private final HeaderAccessor headerAccessor;
  
    private static final Map<String, RunnerApi.Environment> environments = new ConcurrentHashMap<>();
  
    private StaticGrpcProvisionService(ProvisionInfo info, HeaderAccessor headerAccessor) {
      this.info = info;
      this.headerAccessor = headerAccessor;
    }
  
    @Override
    public void getProvisionInfo(
        ProvisionApi.GetProvisionInfoRequest request,
        StreamObserver<GetProvisionInfoResponse> responseObserver) {
      if (!environments.containsKey(headerAccessor.getSdkWorkerId())) {
        // TODO(https://github.com/apache/beam/issues/20253): Remove once the JRH is gone.
        responseObserver.onNext(GetProvisionInfoResponse.newBuilder().setInfo(info).build());
        responseObserver.onCompleted();
        return;
      }
  
      responseObserver.onNext(
          GetProvisionInfoResponse.newBuilder()
              .setInfo(
                  info.toBuilder()
                      .addAllDependencies(
                          environments.get(headerAccessor.getSdkWorkerId()).getDependenciesList()))
              .build());
      responseObserver.onCompleted();
    }
  
    @Override
    public void close() throws Exception {}
  
    public void registerEnvironment(String workerId, RunnerApi.Environment environment) {
      environments.put(workerId, environment);
    }
  }
  