/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.util;
import java.util.regex.PatternSyntaxException;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.PollingConsumer;
import org.apache.camel.Processor;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Some helper methods for working with {@link Endpoint} instances
*
* @version $Revision: 771248 $
*/
public final class EndpointHelper {
private static final transient Log LOG = LogFactory.getLog(EndpointHelper.class);
private EndpointHelper() {
//Utility Class
}
/**
* Creates a {@link PollingConsumer} and polls all pending messages on the endpoint
* and invokes the given {@link Processor} to process each {@link Exchange} and then closes
* down the consumer and throws any exceptions thrown.
*/
public static void pollEndpoint(Endpoint endpoint, Processor processor, long timeout) throws Exception {
PollingConsumer consumer = endpoint.createPollingConsumer();
try {
consumer.start();
while (true) {
Exchange exchange = consumer.receive(timeout);
if (exchange == null) {
break;
} else {
processor.process(exchange);
}
}
} finally {
try {
consumer.stop();
} catch (Exception e) {
LOG.warn("Failed to stop PollingConsumer: " + e, e);
}
}
}
/**
* Creates a {@link PollingConsumer} and polls all pending messages on the
* endpoint and invokes the given {@link Processor} to process each
* {@link Exchange} and then closes down the consumer and throws any
* exceptions thrown.
*/
public static void pollEndpoint(Endpoint endpoint, Processor processor) throws Exception {
pollEndpoint(endpoint, processor, 1000L);
}
/**
* Matches the endpoint with the given pattern.
* <p/>
* The match rules are applied in this order:
* <ul>
* <li>excact match, returns true</li>
* <li>wildcard match (pattern ends with a * and the uri starts with the pattern), returns true</li>
* <li>regular expression match, returns true</li>
* <li>otherwise returns false</li>
* </ul>
*
* @param uri the endpoint uri
* @param pattern a pattern to match
* @return <tt>true</tt> if match, <tt>false</tt> otherwise.
*/
public static boolean matchEndpoint(String uri, String pattern) {
if (uri.equals(pattern)) {
// excact match
return true;
}
// we have wildcard support in that hence you can match with: file* to match any file endpoints
if (pattern.endsWith("*") && uri.startsWith(pattern.substring(0, pattern.length() - 1))) {
return true;
}
// match by regular expression
try {
if (uri.matches(pattern)) {
return true;
}
} catch (PatternSyntaxException e) {
// ignore
}
// no match
return false;
}
}