org.impalaframework.extension.event.AsynchronousEventService Maven / Gradle / Ivy

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package org.impalaframework.extension.event;

import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

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

/**
 * Extension of {@link BaseAsynchronousEventService} which uses a cached thread pool.
 * @author Phil Zoio
 */
public class AsynchronousEventService extends BaseAsynchronousEventService {

    private static final Log logger = LogFactory.getLog(AsynchronousEventService.class);
    
    private ExecutorService taskExecutorService;

    /* ******************** Life cycle methods ****************** */

    protected void doSubmitEvent(Event event) {
        super.addEventToQueue(event);
    }
    
    public void afterStart() {
        logger.info("Starting cached thread pool");
        
        taskExecutorService = Executors.newCachedThreadPool();
    }

    public void beforeStop() {
        logger.info("Stopping cached thread pool");
        
        shutdown(taskExecutorService);
    }
    
    @Override
    protected void submitEventTasks(List eventTaskList) {
        taskExecutorService.submit(new EventTaskList(eventTaskList));
    }
}