/*
* 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.counters;
import org.apache.streams.local.builders.LocalStreamBuilder;
import org.apache.streams.util.ComponentUtils;
import net.jcip.annotations.GuardedBy;
import net.jcip.annotations.ThreadSafe;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.atomic.AtomicLong;
/**
*
*/
@ThreadSafe
public class StreamsTaskCounter implements StreamsTaskCounterMXBean {
public static final String NAME_TEMPLATE = "org.apache.streams.local:type=StreamsTaskCounter,name=%s,identifier=%s,startedAt=%s";
private static final Logger LOGGER = LoggerFactory.getLogger(StreamsTaskCounter.class);
private AtomicLong emitted;
private AtomicLong received;
private AtomicLong errors;
private AtomicLong totalTime;
@GuardedBy("this")
private volatile long maxTime;
/**
*
* @param id
*/
public StreamsTaskCounter(String id) {
this(id, LocalStreamBuilder.DEFAULT_STREAM_IDENTIFIER, -1);
}
/**
*
* @param id
*/
public StreamsTaskCounter(String id, String streamId, long startedAt) {
this.emitted = new AtomicLong(0);
this.received = new AtomicLong(0);
this.errors = new AtomicLong(0);
this.totalTime = new AtomicLong(0);
this.maxTime = -1;
ComponentUtils.registerLocalMBean(String.format(NAME_TEMPLATE, id, streamId, startedAt), this);
}
/**
* Increment emitted count
*/
public void incrementEmittedCount() {
this.incrementEmittedCount(1);
}
/**
* Increment emitted count
* @param delta
*/
public void incrementEmittedCount(long delta) {
this.emitted.addAndGet(delta);
}
/**
* Increment error count
*/
public void incrementErrorCount() {
this.incrementErrorCount(1);
}
/**
* Increment error count
* @param delta
*/
public void incrementErrorCount(long delta) {
this.errors.addAndGet(delta);
}
/**
* Increment received count
*/
public void incrementReceivedCount() {
this.incrementReceivedCount(1);
}
/**
* Increment received count
* @param delta
*/
public void incrementReceivedCount(long delta) {
this.received.addAndGet(delta);
}
/**
* Add the time it takes to process a single datum in milliseconds
* @param processTime
*/
public void addTime(long processTime) {
synchronized (this) {
if(processTime > this.maxTime) {
this.maxTime = processTime;
}
}
this.totalTime.addAndGet(processTime);
}
@Override
public double getErrorRate() {
if(this.received.get() == 0) {
return 0.0;
}
return (double) this.errors.get() / (double) this.received.get();
}
@Override
public long getNumEmitted() {
return this.emitted.get();
}
@Override
public long getNumReceived() {
return this.received.get();
}
@Override
public long getNumUnhandledErrors() {
return this.errors.get();
}
@Override
public double getAvgTime() {
long rec = this.received.get();
long emit = this.emitted.get();
if(rec == 0 && emit == 0 ) {
return 0.0;
} else if( rec == 0) { //provider instance
return this.totalTime.get() / (double) emit;
} else {
return this.totalTime.get() / ((double) this.received.get() - this.errors.get());
}
}
@Override
public long getMaxTime() {
return this.maxTime;
}
}