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 }