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.reifier;
018
019import java.util.concurrent.ScheduledExecutorService;
020
021import org.apache.camel.Expression;
022import org.apache.camel.Processor;
023import org.apache.camel.model.DelayDefinition;
024import org.apache.camel.model.ProcessorDefinition;
025import org.apache.camel.processor.Delayer;
026import org.apache.camel.spi.RouteContext;
027
028public class DelayReifier extends ExpressionReifier<DelayDefinition> {
029
030    public DelayReifier(RouteContext routeContext, ProcessorDefinition<?> definition) {
031        super(routeContext, DelayDefinition.class.cast(definition));
032    }
033
034    @Override
035    public Processor createProcessor() throws Exception {
036        Processor childProcessor = this.createChildProcessor(false);
037        Expression delay = createAbsoluteTimeDelayExpression();
038
039        boolean async = parseBoolean(definition.getAsyncDelayed(), true);
040        boolean shutdownThreadPool = willCreateNewThreadPool(definition, async);
041        ScheduledExecutorService threadPool = getConfiguredScheduledExecutorService("Delay", definition, async);
042
043        Delayer answer = new Delayer(camelContext, childProcessor, delay, threadPool, shutdownThreadPool);
044        answer.setAsyncDelayed(async);
045        answer.setCallerRunsWhenRejected(parseBoolean(definition.getCallerRunsWhenRejected(), true));
046        return answer;
047    }
048
049    private Expression createAbsoluteTimeDelayExpression() {
050        return definition.getExpression() != null ? createExpression(definition.getExpression()) : null;
051    }
052
053}