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.http;
  
  import java.io.IOException;
  import java.security.cert.X509Certificate;
  import java.util.Queue;
  import java.util.concurrent.BlockingQueue;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.transport.TransportSupport;
  import org.apache.activemq.util.ServiceStopper;
  import org.apache.activemq.wireformat.WireFormat;
  
  /**
   * A server side HTTP based TransportChannel which processes incoming packets
   * and adds outgoing packets onto a {@link Queue} so that they can be dispatched
   * by the HTTP GET requests from the client.
   */
  public class BlockingQueueTransport extends TransportSupport {
  
      public static final long MAX_TIMEOUT = 30000L;
  
      private BlockingQueue<Object> queue;
  
      public BlockingQueueTransport(BlockingQueue<Object> channel) {
          this.queue = channel;
      }
  
      public BlockingQueue<Object> getQueue() {
          return queue;
      }
  
      @Override
      public void oneway(Object command) throws IOException {
          try {
              boolean success = queue.offer(command, MAX_TIMEOUT, TimeUnit.MILLISECONDS);
              if (!success) {
                  throw new IOException("Fail to add to BlockingQueue. Add timed out after " + MAX_TIMEOUT + "ms: size=" + queue.size());
              }
          } catch (InterruptedException e) {
              throw new IOException("Fail to add to BlockingQueue. Interrupted while waiting for space: size=" + queue.size());
          }
      }
  
      @Override
      public String getRemoteAddress() {
          return "blockingQueue_" + queue.hashCode();
      }
  
      @Override
      protected void doStart() throws Exception {
      }
  
      @Override
      protected void doStop(ServiceStopper stopper) throws Exception {
      }
  
      @Override
      public int getReceiveCounter() {
          return 0;
      }
  
      @Override
      public X509Certificate[] getPeerCertificates() {
          return null;
      }
  
      @Override
      public void setPeerCertificates(X509Certificate[] certificates) {
      }
  
      @Override
      public WireFormat getWireFormat() {
          return null;
      }
  }