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.activemq.transport.ws.jetty11;
  
  import java.io.IOException;
  import java.time.Duration;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.transport.stomp.Stomp;
  import org.apache.activemq.transport.stomp.StompFrame;
  import org.apache.activemq.transport.ws.AbstractStompSocket;
  import org.apache.activemq.util.IOExceptionSupport;
  import org.eclipse.jetty.websocket.api.Session;
  import org.eclipse.jetty.websocket.api.WebSocketListener;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Implements web socket and mediates between servlet and the broker
   */
  public class StompSocket extends AbstractStompSocket implements WebSocketListener {
  
      private static final Logger LOG = LoggerFactory.getLogger(StompSocket.class);
  
      private final int ORDERLY_CLOSE_TIMEOUT = 10;
  
      private Session session;
  
      public StompSocket(String remoteAddress) {
          super(remoteAddress);
      }
  
      @Override
      public void sendToStomp(StompFrame command) throws IOException {
          try {
              //timeout after a period of time so we don't wait forever and hold the protocol lock
              // FIXME: convert to timeout async get(getDefaultSendTimeOut(), TimeUnit.SECONDS)
              session.getRemote().sendString(getWireFormat().marshalToString(command));
          } catch (Exception e) {
              throw IOExceptionSupport.create(e);
          }
      }
  
      @Override
      public void handleStopped() throws IOException {
          if (session != null && session.isOpen()) {
              session.close();
          }
      }
  
      //----- WebSocketListener event callbacks --------------------------------//
  
      @Override
      public void onWebSocketBinary(byte[] arg0, int arg1, int arg2) {
      }
  
      @Override
      public void onWebSocketClose(int arg0, String arg1) {
          try {
              if (protocolLock.tryLock() || protocolLock.tryLock(ORDERLY_CLOSE_TIMEOUT, TimeUnit.SECONDS)) {
                  LOG.debug("Stomp WebSocket closed: code[{}] message[{}]", arg0, arg1);
                  protocolConverter.onStompCommand(new StompFrame(Stomp.Commands.DISCONNECT));
              }
          } catch (Exception e) {
              LOG.debug("Failed to close STOMP WebSocket cleanly", e);
          } finally {
              if (protocolLock.isHeldByCurrentThread()) {
                  protocolLock.unlock();
              }
          }
      }
  
      @Override
      public void onWebSocketConnect(Session session) {
          this.session = session;
          this.session.setIdleTimeout(Duration.ZERO);
      }
  
      @Override
      public void onWebSocketError(Throwable arg0) {
      }
  
      @Override
      public void onWebSocketText(String data) {
          processStompFrame(data);
      }
  
      private static int getDefaultSendTimeOut() {
          return Integer.getInteger("org.apache.activemq.transport.ws.StompSocket.sendTimeout", 30);
      }
  }
  