org.apache.synapse.commons.throttle.core.ThrottleContextCleanupTask.java Source code

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Here is the source code for org.apache.synapse.commons.throttle.core.ThrottleContextCleanupTask.java

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/*
*  Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*  WSO2 Inc. 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.synapse.commons.throttle.core;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;

/**
 * This task is responsible for cleanup callers which has expired along with hazelcast shared params
 *
 */
public class ThrottleContextCleanupTask {

    private static final Log log = LogFactory.getLog(ThrottleContextCleanupTask.class);

    private static final String THROTTLE_CONTEXT_CLEANUP_TASK_FREQUENCY = "throttling.context.cleanup.frequency";
    private List<ThrottleContext> throttleContexts = new ArrayList<ThrottleContext>();

    public ThrottleContextCleanupTask() {

        ScheduledExecutorService executor = Executors.newScheduledThreadPool(1, new ThreadFactory() {

            public Thread newThread(Runnable r) {
                Thread t = new Thread(r);
                t.setName("Throttle Cleanup Task");
                return t;
            }
        });

        String throttleFrequency = System.getProperty(THROTTLE_CONTEXT_CLEANUP_TASK_FREQUENCY);
        if (throttleFrequency == null) {
            throttleFrequency = "3600000";
        }

        if (log.isDebugEnabled()) {
            log.debug("Throttling Cleanup Task Frequency set to " + throttleFrequency);
        }

        executor.scheduleAtFixedRate(new CleanupTask(), Integer.parseInt(throttleFrequency),
                Integer.parseInt(throttleFrequency), TimeUnit.MILLISECONDS);

    }

    public void addThrottleContext(ThrottleContext throttleContext) {
        throttleContexts.add(throttleContext);
    }

    private class CleanupTask implements Runnable {

        public void run() {
            if (log.isDebugEnabled()) {
                log.debug("Running the cleanup task");
            }
            for (ThrottleContext throttleContext : throttleContexts) {
                throttleContext.cleanupCallers(System.currentTimeMillis());
            }
        }
    }

}