001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.activemq.transport.stomp;
018    
019    import java.io.IOException;
020    
021    import org.apache.activemq.command.WireFormatInfo;
022    import org.apache.activemq.transport.AbstractInactivityMonitor;
023    import org.apache.activemq.transport.Transport;
024    import org.apache.activemq.wireformat.WireFormat;
025    import org.slf4j.Logger;
026    import org.slf4j.LoggerFactory;
027    
028    /**
029     * Used to make sure that commands are arriving periodically from the peer of
030     * the transport.
031     */
032    public class StompInactivityMonitor extends AbstractInactivityMonitor {
033    
034        private static final Logger LOG = LoggerFactory.getLogger(StompInactivityMonitor.class);
035    
036        private boolean isConfigured = false;
037    
038        public StompInactivityMonitor(Transport next, WireFormat wireFormat) {
039            super(next, wireFormat);
040        }
041    
042        public void startMonitoring() throws IOException {
043            this.isConfigured = true;
044            this.startMonitorThreads();
045        }
046    
047        @Override
048        protected void processInboundWireFormatInfo(WireFormatInfo info) throws IOException {
049        }
050    
051        @Override
052        protected void processOutboundWireFormatInfo(WireFormatInfo info) throws IOException{
053        }
054    
055        @Override
056        protected boolean configuredOk() throws IOException {
057    
058            if (!isConfigured) {
059                return false;
060            }
061    
062            LOG.debug("Stomp Inactivity Monitor read check: " + getReadCheckTime() +
063                      ", write check: " + getWriteCheckTime());
064    
065            if (this.getReadCheckTime() >= 0 && this.getWriteCheckTime() >= 0) {
066                return true;
067            }
068    
069            return false;
070        }
071    }