package org.apache.maven.plugin.surefire.extensions;
   
   /*
    * 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.
   */
  
  import org.apache.maven.surefire.api.event.Event;
  import org.apache.maven.surefire.api.fork.ForkNodeArguments;
  import org.apache.maven.surefire.api.stream.AbstractStreamDecoder.Memento;
  import org.apache.maven.surefire.extensions.CloseableDaemonThread;
  import org.apache.maven.surefire.extensions.EventHandler;
  import org.apache.maven.surefire.extensions.util.CountdownCloseable;
  import org.apache.maven.surefire.stream.EventDecoder;
  
  import javax.annotation.Nonnull;
  import java.io.EOFException;
  import java.io.IOException;
  import java.io.InterruptedIOException;
  import java.nio.channels.ClosedChannelException;
  import java.nio.channels.ReadableByteChannel;
  
  /**
   *
   */
  public class EventConsumerThread extends CloseableDaemonThread
  {
      private final ReadableByteChannel channel;
      private final EventHandler<Event> eventHandler;
      private final CountdownCloseable countdownCloseable;
      private final EventDecoder decoder;
      private final ForkNodeArguments arguments;
      private volatile boolean disabled;
  
      public EventConsumerThread( @Nonnull String threadName,
                                  @Nonnull ReadableByteChannel channel,
                                  @Nonnull EventHandler<Event> eventHandler,
                                  @Nonnull CountdownCloseable countdownCloseable,
                                  @Nonnull ForkNodeArguments arguments )
      {
          super( threadName );
          decoder = new EventDecoder( channel, arguments );
          this.channel = channel;
          this.eventHandler = eventHandler;
          this.countdownCloseable = countdownCloseable;
          this.arguments = arguments;
      }
  
      @Override
      public void run()
      {
          try ( ReadableByteChannel stream = channel;
                CountdownCloseable c = countdownCloseable;
                EventDecoder eventDecoder = decoder )
          {
              Memento memento = eventDecoder.new Memento();
              do
              {
                  Event event = eventDecoder.decode( memento );
                  if ( event != null && !disabled )
                  {
                      eventHandler.handleEvent( event );
                  }
              }
              while ( true );
          }
          catch ( EOFException | ClosedChannelException e )
          {
              //
          }
          catch ( IOException e )
          {
              if ( e instanceof InterruptedIOException || e.getCause() instanceof InterruptedException )
              {
                  Thread.currentThread().interrupt();
              }
              else
              {
                  arguments.dumpStreamException( e );
              }
          }
      }
  
      @Override
      public void disable()
     {
         disabled = true;
     }
 
     @Override
     public void close() throws IOException
     {
         channel.close();
     }
 }