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.dataset;
018    
019    import java.util.concurrent.atomic.AtomicInteger;
020    
021    import org.apache.camel.Component;
022    import org.apache.camel.Consumer;
023    import org.apache.camel.Exchange;
024    import org.apache.camel.Message;
025    import org.apache.camel.PollingConsumer;
026    import org.apache.camel.Processor;
027    import org.apache.camel.Service;
028    import org.apache.camel.component.mock.MockEndpoint;
029    import org.apache.camel.impl.EventDrivenPollingConsumer;
030    import org.apache.camel.util.ExchangeHelper;
031    import org.apache.camel.util.ObjectHelper;
032    import org.apache.commons.logging.Log;
033    import org.apache.commons.logging.LogFactory;
034    
035    /**
036     * @version $Revision: 37863 $
037     */
038    public class DataSetEndpoint extends MockEndpoint implements Service {
039        private static final transient Log LOG = LogFactory.getLog(DataSetEndpoint.class);
040        private DataSet dataSet;
041        private AtomicInteger receivedCounter = new AtomicInteger();
042        private long produceDelay = -1;
043        private long consumeDelay = -1;
044        private long startTime;
045        private long preloadSize;
046    
047        public DataSetEndpoint(String endpointUri, Component component, DataSet dataSet) {
048            super(endpointUri, component);
049            this.dataSet = dataSet;
050        }
051    
052        public static void assertEquals(String description, Object expected, Object actual, Exchange exchange) {
053            if (!ObjectHelper.equal(expected, actual)) {
054                throw new AssertionError(description + " does not match. Expected: " + expected + " but was: " + actual + " on  " + exchange + " with headers: " + exchange.getIn().getHeaders());
055            }
056        }
057    
058        @Override
059        public PollingConsumer<Exchange> createPollingConsumer() throws Exception {
060            return new EventDrivenPollingConsumer<Exchange>(this);
061        }
062    
063        @Override
064        public Consumer<Exchange> createConsumer(Processor processor) throws Exception {
065            return new DataSetConsumer(this, processor);
066        }
067    
068        @Override
069        public void reset() {
070            super.reset();
071            receivedCounter.set(0);
072        }
073    
074        @Override
075        public int getReceivedCounter() {
076            return receivedCounter.get();
077        }
078    
079        /**
080         * Creates a message exchange for the given index in the {@link DataSet}
081         */
082        public Exchange createExchange(long messageIndex) throws Exception {
083            Exchange exchange = createExchange();
084            getDataSet().populateMessage(exchange, messageIndex);
085    
086            Message in = exchange.getIn();
087            in.setHeader(DataSet.INDEX_HEADER, messageIndex);
088    
089            return exchange;
090        }
091    
092        @Override
093        protected void waitForCompleteLatch() throws InterruptedException {
094            // TODO lets do a much better version of this!
095            long size = getDataSet().getSize();
096            size *= 4000;
097            setResultWaitTime(size);
098            super.waitForCompleteLatch();
099        }
100    
101        // Properties
102        //-------------------------------------------------------------------------
103    
104        public DataSet getDataSet() {
105            return dataSet;
106        }
107    
108        public void setDataSet(DataSet dataSet) {
109            this.dataSet = dataSet;
110        }
111    
112        public long getPreloadSize() {
113            return preloadSize;
114        }
115    
116        /**
117         * Sets how many messages should be preloaded (sent) before the route completes its initialisation
118         */
119        public void setPreloadSize(long preloadSize) {
120            this.preloadSize = preloadSize;
121        }
122    
123        public long getConsumeDelay() {
124            return consumeDelay;
125        }
126    
127        /**
128         * Allows a delay to be specified which causes consumers to pause - to simulate slow consumers
129         */
130        public void setConsumeDelay(long consumeDelay) {
131            this.consumeDelay = consumeDelay;
132        }
133    
134        public long getProduceDelay() {
135            return produceDelay;
136        }
137    
138        /**
139         * Allows a delay to be specified which causes producers to pause - to simpulate slow producers
140         */
141        public void setProduceDelay(long produceDelay) {
142            this.produceDelay = produceDelay;
143        }
144    
145        // Implementation methods
146        //-------------------------------------------------------------------------
147    
148        @Override
149        protected void performAssertions(Exchange actual) throws Exception {
150            if (startTime == 0) {
151                startTime = System.currentTimeMillis();
152            }
153            int receivedCount = receivedCounter.incrementAndGet();
154            long index = receivedCount - 1;
155            Exchange expected = createExchange(index);
156    
157            // now lets assert that they are the same
158            if (LOG.isDebugEnabled()) {
159                LOG.debug("Received message: " + index + " = " + actual);
160            }
161    
162            assertMessageExpected(index, expected, actual);
163    
164            if (consumeDelay > 0) {
165                Thread.sleep(consumeDelay);
166            }
167    
168            long group = getDataSet().getReportCount();
169            if (receivedCount % group == 0) {
170                reportProgress(actual, receivedCount);
171            }
172        }
173    
174        protected void reportProgress(Exchange actual, int receivedCount) {
175            long time = System.currentTimeMillis();
176            long elapsed = time - startTime;
177            startTime = time;
178    
179            LOG.info("Received: " + receivedCount + " messages so far. Last group took: " + elapsed + " millis");
180        }
181    
182        protected void assertMessageExpected(long index, Exchange expected, Exchange actual) throws Exception {
183            long actualCounter = ExchangeHelper.getMandatoryHeader(actual, DataSet.INDEX_HEADER, Long.class);
184            assertEquals("Header: " + DataSet.INDEX_HEADER, index, actualCounter, actual);
185    
186            getDataSet().assertMessageExpected(this, expected, actual, index);
187        }
188    
189        public void start() throws Exception {
190            long size = getDataSet().getSize();
191            expectedMessageCount((int) size);
192        }
193    
194        public void stop() throws Exception {
195        }
196    }