Source Code Cross Referenced for ThreadManagerService.java in  » Portal » stringbeans-3.5 » com » nabhinc » ws » service » thread » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » stringbeans 3.5 » com.nabhinc.ws.service.thread 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  The ASF licenses this file to You
004:         * under the Apache License, Version 2.0 (the "License"); you may not
005:         * 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.  For additional information regarding
015:         * copyright in this work, please see the NOTICE file in the top level
016:         * directory of this distribution.
017:         * 
018:         * Modified for Nabh
019:         */
020:        package com.nabhinc.ws.service.thread;
021:
022:        import EDU.oswego.cs.dl.util.concurrent.BoundedBuffer;
023:        import EDU.oswego.cs.dl.util.concurrent.DirectExecutor;
024:        import EDU.oswego.cs.dl.util.concurrent.PooledExecutor;
025:        import EDU.oswego.cs.dl.util.concurrent.ThreadFactory;
026:
027:        import java.util.Date;
028:        import java.util.Timer;
029:        import java.util.TimerTask;
030:
031:        import com.nabhinc.util.DateUtil;
032:        import com.nabhinc.ws.service.core.BaseJavaWebService;
033:
034:        public class ThreadManagerService extends BaseJavaWebService {
035:            public static final long MIN_RATE_INTERVAL_MINS = 1;
036:            private PooledExecutor backgroundExecutor;
037:            private DirectExecutor nodelayExecutor;
038:            private Timer scheduler;
039:
040:            public ThreadManagerService() {
041:                backgroundExecutor = new PooledExecutor(new BoundedBuffer(10),
042:                        25);
043:                backgroundExecutor.setMinimumPoolSize(4);
044:                backgroundExecutor.setKeepAliveTime(1000 * 60 * 5);
045:                backgroundExecutor.waitWhenBlocked();
046:                backgroundExecutor.createThreads(9);
047:
048:                backgroundExecutor.setThreadFactory(new ThreadFactory() {
049:                    public Thread newThread(Runnable command) {
050:                        Thread t = new Thread(command);
051:                        t.setDaemon(false);
052:                        t.setName("Background Execution Threads");
053:                        t.setPriority(Thread.NORM_PRIORITY);
054:
055:                        return t;
056:                    }
057:                });
058:
059:                nodelayExecutor = new DirectExecutor();
060:                scheduler = new Timer(true);
061:            }
062:
063:            public void executeInBackground(Runnable runnable)
064:                    throws InterruptedException {
065:                backgroundExecutor.execute(runnable);
066:            }
067:
068:            public void executeInForeground(Runnable runnable)
069:                    throws InterruptedException {
070:                nodelayExecutor.execute(runnable);
071:            }
072:
073:            public void scheduleDailyTimerTask(TimerTask task) {
074:                scheduler.scheduleAtFixedRate(task, DateUtil
075:                        .getEndOfDay(new Date()), DateUtil.millisInDay);
076:            }
077:
078:            public void scheduleHourlyTimerTask(TimerTask task) {
079:                scheduler.scheduleAtFixedRate(task, new Date(), 60 * 60 * 1000);
080:            }
081:
082:            public void scheduleFixedRateTimerTask(TimerTask task,
083:                    long delayMins, long periodMins) {
084:                if (periodMins < MIN_RATE_INTERVAL_MINS) {
085:                    throw new IllegalArgumentException("Period (" + periodMins
086:                            + ") shorter than minimum allowed ("
087:                            + MIN_RATE_INTERVAL_MINS + ")");
088:                }
089:                scheduler.scheduleAtFixedRate(task, delayMins * 60 * 1000,
090:                        periodMins * 60 * 1000);
091:            }
092:
093:            public void destroy() {
094:                backgroundExecutor
095:                        .shutdownAfterProcessingCurrentlyQueuedTasks();
096:                scheduler.cancel();
097:            }
098:
099:            public void release() {
100:            }
101:
102:        }
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