camel-k-runtime-cron/src/main/java/org/apache/camel/k/cron/CronTimerContextCustomizer.java

/*
 * 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.k.cron;

import org.apache.camel.CamelContext;
import org.apache.camel.Endpoint;
import org.apache.camel.component.timer.TimerEndpoint;
import org.apache.camel.k.ContextCustomizer;
import org.apache.camel.support.LifecycleStrategySupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CronTimerContextCustomizer implements ContextCustomizer {

    public CronTimerContextCustomizer() {
    }

    @Override
    public void apply(CamelContext camelContext) {
        camelContext.addLifecycleStrategy(new CronTimerLifecycleStrategy());
        camelContext.addRoutePolicyFactory(new CronRoutePolicyFactory());
    }

    static class CronTimerLifecycleStrategy extends LifecycleStrategySupport {

        private static final Logger LOG = LoggerFactory.getLogger(CronTimerLifecycleStrategy.class);

        @Override
        public void onEndpointAdd(Endpoint endpoint) {
            if (endpoint instanceof TimerEndpoint) {
                LOG.info("Cron policy is configuring the timer endpoint to startup immediately");
                TimerEndpoint te = (TimerEndpoint)endpoint;
                te.setDelay(0);
                te.setPeriod(1);
                te.setRepeatCount(1);
                te.setTime(null);
                te.setFixedRate(false);
                te.setPattern(null);
            }
        }
    }
}