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.sdk.fn.server;
  
  import java.io.IOException;
  import java.util.List;
  import java.util.concurrent.atomic.AtomicInteger;
  import org.apache.beam.model.pipeline.v1.Endpoints.ApiServiceDescriptor;
  import org.apache.beam.vendor.grpc.v1p69p0.io.grpc.BindableService;
  import org.apache.beam.vendor.grpc.v1p69p0.io.grpc.Server;
  import org.apache.beam.vendor.grpc.v1p69p0.io.grpc.ServerInterceptors;
  import org.apache.beam.vendor.grpc.v1p69p0.io.grpc.inprocess.InProcessServerBuilder;
  
  /**
   * A {@link ServerFactory} which creates {@link Server servers} with the {@link
   * InProcessServerBuilder}.
   */
  public class InProcessServerFactory extends ServerFactory {
    private static final AtomicInteger serviceNameUniqifier = new AtomicInteger();
  
    public static InProcessServerFactory create() {
      return new InProcessServerFactory();
    }
  
    private InProcessServerFactory() {}
  
    @Override
    public Server allocateAddressAndCreate(
        List<BindableService> services, ApiServiceDescriptor.Builder builder) throws IOException {
      String name = String.format("InProcessServer_%s", serviceNameUniqifier.getAndIncrement());
      builder.setUrl(name);
      InProcessServerBuilder serverBuilder = InProcessServerBuilder.forName(name);
      services.stream()
          .forEach(
              service ->
                  serverBuilder.addService(
                      ServerInterceptors.intercept(
                          service, GrpcContextHeaderAccessorProvider.interceptor())));
      return serverBuilder.build().start();
    }
  
    @Override
    public Server create(List<BindableService> services, ApiServiceDescriptor serviceDescriptor)
        throws IOException {
      InProcessServerBuilder builder = InProcessServerBuilder.forName(serviceDescriptor.getUrl());
      services.stream()
          .forEach(
              service ->
                  builder.addService(
                      ServerInterceptors.intercept(
                          service, GrpcContextHeaderAccessorProvider.interceptor())));
      return builder.build().start();
    }
  }
  