scouter.agent.BackJobs Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* Licensed 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 scouter.agent;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import scouter.util.ThreadUtil;
public class BackJobs extends Thread {
private static BackJobs instance = null;
public final static synchronized BackJobs getInstance() {
if (instance == null) {
instance = new BackJobs();
instance.setDaemon(true);
instance.setName(ThreadUtil.getName(instance));
instance.start();
}
return instance;
}
protected BackJobs() {
}
public class JobW {
Runnable job;
long lastExTime;
int interval;
public JobW(Runnable job, int interval) {
this.job = job;
this.interval = interval;
}
}
private Map jobs = new HashMap();
/**
* 반복적으로 실행할 잡을 등록한다.
* @param id
* @param interval - 1000보다 작으면 1000 이 적용된다.
* @param job
*/
public void put(String id, int interval, Runnable job) {
jobs.put(id, new JobW(job, interval));
}
public void remove(String id) {
jobs.remove(id);
}
public void shutdown() {
running = false;
}
private boolean running = true;
public void run() {
while (running) {
ThreadUtil.sleep(1000);
try {
process();
} catch (Throwable t) {
Logger.println("A109", t);
}
}
}
private void process() {
Iterator> itr = jobs.entrySet().iterator();
while (itr.hasNext()) {
Map.Entry j = itr.next();
JobW jobw = j.getValue();
long now = System.currentTimeMillis();
if (now >= jobw.lastExTime + jobw.interval) {
jobw.lastExTime = now;
try {
jobw.job.run();
} catch (Exception e) {
Logger.println("A110", j.getKey() + ":" + e);
}
}
}
}
}