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 */
017package org.apache.camel.component.stub;
018
019import org.apache.camel.AsyncCallback;
020import org.apache.camel.Exchange;
021import org.apache.camel.ExchangePattern;
022import org.apache.camel.WaitForTaskToComplete;
023import org.apache.camel.component.seda.QueueReference;
024import org.apache.camel.component.seda.SedaEndpoint;
025import org.apache.camel.component.seda.SedaProducer;
026
027public class StubProducer extends SedaProducer {
028
029    public StubProducer(SedaEndpoint endpoint, WaitForTaskToComplete waitForTaskToComplete, long timeout, boolean blockWhenFull, long offerTimeout) {
030        super(endpoint, waitForTaskToComplete, timeout, blockWhenFull, offerTimeout);
031    }
032
033    @Override
034    public StubEndpoint getEndpoint() {
035        return (StubEndpoint) super.getEndpoint();
036    }
037
038    @Override
039    public boolean process(Exchange exchange, AsyncCallback callback) {
040        AsyncCallback cb = callback;
041
042        QueueReference queueReference = getEndpoint().getQueueReference();
043        boolean empty = queueReference == null || !queueReference.hasConsumers();
044
045        // if no consumers then use InOnly mode
046        final ExchangePattern pattern = exchange.getPattern();
047        if (empty && pattern != ExchangePattern.InOnly) {
048            exchange.setPattern(ExchangePattern.InOnly);
049            cb = doneSync -> {
050                // and restore the old pattern after processing
051                exchange.setPattern(pattern);
052                callback.done(doneSync);
053            };
054        }
055
056        return super.process(exchange, cb);
057    }
058    
059}