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.celeborn.common.network.protocol;
  
  import java.util.concurrent.Future;
  import java.util.concurrent.ScheduledExecutorService;
  
  import com.google.protobuf.ExtensionRegistry;
  
  import org.apache.celeborn.common.protocol.TransportMessages;
  import org.apache.celeborn.common.util.ThreadUtils;
  
  public class TransportMessagesHelper {
  
    private final ScheduledExecutorService transportMessagesRunner;
    private final Future<?> runTransportMessagesStaticBlockerTask;
  
    public TransportMessagesHelper() {
      transportMessagesRunner =
          ThreadUtils.newDaemonSingleThreadScheduledExecutor("transport-messages-runner");
      runTransportMessagesStaticBlockerTask =
          transportMessagesRunner.submit(
              () ->
                  // Pre-run TransportMessages static code blocks to improve performance of protobuf
                  // serialization.
                  TransportMessages.registerAllExtensions(ExtensionRegistry.newInstance()));
    }
  
    public void close() {
      runTransportMessagesStaticBlockerTask.cancel(true);
      ThreadUtils.shutdown(transportMessagesRunner);
    }
  }
  