/*
* 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
*
* 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.streams.local.tasks;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryUsage;
import java.util.concurrent.Executor;
@Deprecated
public class LocalStreamProcessMonitorThread implements StatusCounterMonitorRunnable
{
private static final Logger LOGGER = LoggerFactory.getLogger(LocalStreamProcessMonitorThread.class);
private Executor executor;
private int seconds;
private boolean run = true;
public LocalStreamProcessMonitorThread(Executor executor, int delayInSeconds) {
this.executor = executor;
this.seconds = delayInSeconds;
}
@Override
public void shutdown(){
this.run = false;
}
@Override
public boolean isRunning() {
return this.run;
}
@Override
public void run()
{
while(run){
/**
*
* Note:
* Quick class and method to let us see what is going on with the JVM. We need to make sure
* that everything is running with as little memory as possible. If we are generating a heap
* overflow, this will be very apparent by the information shown here.
*/
MemoryUsage memoryUsage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
String maxMemory = memoryUsage.getMax() == Long.MAX_VALUE ? "NO_LIMIT" :
humanReadableByteCount(memoryUsage.getMax(), true);
String usedMemory = humanReadableByteCount(memoryUsage.getUsed(), true);
LOGGER.debug("[monitor] Used Memory: {}, Max: {}",
usedMemory,
maxMemory);
try
{
Thread.sleep(seconds*1000);
}
catch (InterruptedException e)
{ }
}
}
public String humanReadableByteCount(long bytes, boolean si) {
int unit = si ? 1000 : 1024;
if (bytes < unit) return bytes + " B";
int exp = (int) (Math.log(bytes) / Math.log(unit));
String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp-1) + (si ? "" : "i");
return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
}
}