001/*
002 * (C) Copyright 2013 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Florent Guillaume
018 */
019package org.nuxeo.ecm.core.work;
020
021import java.util.concurrent.ThreadPoolExecutor;
022
023import org.nuxeo.ecm.core.work.api.Work;
024import org.nuxeo.runtime.trackers.concurrent.ThreadEvent;
025
026/**
027 * A {@link WorkHolder} adapts a {@link Work} to {@link Runnable} for queuing and execution by a
028 * {@link ThreadPoolExecutor}.
029 * <p>
030 * Calls (indirectly) {@link Work#work} and {@link Work#cleanUp}.
031 *
032 * @see Work
033 * @see Work#work
034 * @see Work#cleanUp
035 * @see AbstractWork
036 * @since 5.8
037 */
038public class WorkHolder implements Runnable {
039
040    private final Work work;
041
042    public WorkHolder(Work work) {
043        this.work = work;
044    }
045
046    public static Work getWork(Runnable r) {
047        return ((WorkHolder) r).work;
048    }
049
050    @Override
051    public void run() {
052        final Thread currentThread = Thread.currentThread();
053        String name = currentThread.getName();
054        currentThread.setName(name + ":" + work.getId());
055        ThreadEvent.onEnter(this, false).send();
056        try {
057            work.run();
058        } finally {
059            currentThread.setName(name);
060            ThreadEvent.onLeave(this).send();
061        }
062    }
063
064}