/*
*
* Derby - Class org.apache.derbyTesting.system.mailjdbc.utils.ThreadUtils
*
* 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.derbyTesting.system.mailjdbc.utils;
/**
* This class is used to keep the threads in an ArrayList and starts them
* also checks whether the thread is alive or sleeping
*/
import java.util.ArrayList;
import org.apache.derbyTesting.system.mailjdbc.MailJdbc;
import org.apache.derbyTesting.system.mailjdbc.tasks.Backup;
import org.apache.derbyTesting.system.mailjdbc.tasks.Browse;
import org.apache.derbyTesting.system.mailjdbc.tasks.Purge;
import org.apache.derbyTesting.system.mailjdbc.tasks.Refresh;
public class ThreadUtils {
private static ArrayList userThreads = new ArrayList();
public static ThreadUtils threadutil = new ThreadUtils();
//constructor which will start the threads
public static void startThreads() {
threadutil.run();
}
public void run() {
Thread t = null;
try {
//Starting Refresh Thread
t = new Refresh("Refresh Thread");
t.start();
MailJdbc.logAct.logMsg(LogFile.INFO + "Started: " + t.getName());
userThreads.add(t);
//Starting browsing thread
t = new Browse("Browsing Thread");
t.start();
MailJdbc.logAct.logMsg(LogFile.INFO + "Started: " + t.getName());
userThreads.add(t);
//Starting Purge Thread
t = new Purge("Purging Thread");
int sleep_time = (int) 150000; //Due the cascade constriant
// This is the number that
// make sure insert attachment has been finished
Thread.sleep(sleep_time);
t.start();
MailJdbc.logAct.logMsg(LogFile.INFO + "Started: " + t.getName() + " with 150000 sleep time");
userThreads.add(t);
//Starting Backup Thread
t = new Backup("Backup Thread");
t.start();
MailJdbc.logAct.logMsg(LogFile.INFO + "Started: " + t.getName());
userThreads.add(t);
sleep_time = (int) (Math.random() * 15000);
Thread.sleep(sleep_time);
} catch (Exception e) {
MailJdbc.logAct
.logMsg(LogFile.ERROR
+ "Exception while starting the threads: "
+ e.getMessage());
}
}
public static synchronized boolean isThreadRunning(String name) {
//checks and returns true is the Refresh thread is active
if (name.equalsIgnoreCase("Refresh Thread")) {
Refresh rt = (Refresh) userThreads.get(0);
return rt.isRunning();
} else
return false;
}
public static synchronized Thread getThread(String name) {
if (name.equalsIgnoreCase("Refresh Thread")) {
return (Refresh) userThreads.get(0);
} if (name.equalsIgnoreCase("Purging Thread")) {
return (Purge) userThreads.get(2);
} else {
return null;
}
}
public ThreadUtils getInstance() {
return threadutil;
}
}