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.camel.impl;
018    
019    import org.apache.camel.Consumer;
020    import org.apache.camel.Endpoint;
021    import org.apache.camel.PollingConsumerPollStrategy;
022    import org.apache.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    
025    /**
026     * A default implementation that just logs a <tt>WARN</tt> level log in case of rollback.
027     *
028     * @version $Revision: 794965 $
029     */
030    public class DefaultPollingConsumerPollStrategy implements PollingConsumerPollStrategy {
031    
032        protected final transient Log log = LogFactory.getLog(getClass());
033    
034        public void begin(Consumer consumer, Endpoint endpoint) {
035            // noop
036        }
037    
038        public void commit(Consumer consumer, Endpoint endpoint) {
039            // noop
040        }
041    
042        public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception {
043            log.warn("Consumer " + consumer +  " could not poll endpoint: " + endpoint.getEndpointUri() + " caused by: " + e.getMessage(), e);
044            // we do not want to retry
045            return false;
046        }
047    
048    }