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.component.feed;
018    
019    import java.io.IOException;
020    
021    import org.apache.camel.Exchange;
022    import org.apache.camel.Processor;
023    import org.apache.camel.impl.ScheduledPollConsumer;
024    
025    /**
026     * Base class for consuming feeds.
027     */
028    public abstract class FeedPollingConsumer extends ScheduledPollConsumer {
029        public static final long DEFAULT_CONSUMER_DELAY = 60 * 1000L;
030        protected final FeedEndpoint endpoint;
031    
032        public FeedPollingConsumer(FeedEndpoint endpoint, Processor processor) {
033            super(endpoint, processor);
034            this.endpoint = endpoint;
035        }
036    
037        protected void poll() throws Exception {
038            Exchange exchange = endpoint.createExchange(createFeed());
039            getProcessor().process(exchange);
040        }
041    
042        protected abstract Object createFeed() throws Exception;
043    
044    }