org.apache.pulsar.policies.data.loadbalancer.NamespaceBundleStats Maven / Gradle / Ivy
/**
* 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.pulsar.policies.data.loadbalancer;
import java.io.Serializable;
import lombok.EqualsAndHashCode;
/**
*/
@EqualsAndHashCode
public class NamespaceBundleStats implements Comparable, Serializable {
public double msgRateIn;
public double msgThroughputIn;
public double msgRateOut;
public double msgThroughputOut;
public int consumerCount;
public int producerCount;
public long topics;
public long cacheSize;
// Consider the throughput equal if difference is less than 100 KB/s
private final static double throughputDifferenceThreshold = 1e5;
// Consider the msgRate equal if the difference is less than 100
private final static double msgRateDifferenceThreshold = 100;
// Consider the total topics/producers/consumers equal if the difference is less than 500
private final static long topicConnectionDifferenceThreshold = 500;
// Consider the cache size equal if the difference is less than 100 kb
private final static long cacheSizeDifferenceThreshold = 100000;
public NamespaceBundleStats() {
reset();
}
public void reset() {
this.msgRateIn = 0;
this.msgThroughputIn = 0;
this.msgRateOut = 0;
this.msgThroughputOut = 0;
this.consumerCount = 0;
this.producerCount = 0;
this.topics = 0;
this.cacheSize = 0;
}
// compare 2 bundles in below aspects:
// 1. Inbound bandwidth
// 2. Outbound bandwidth
// 3. Total megRate (both in and out)
// 4. Total topics and producers/consumers
// 5. Total cache size
public int compareTo(NamespaceBundleStats other) {
int result = this.compareByBandwidthIn(other);
if (result == 0) {
result = this.compareByBandwidthOut(other);
}
if (result == 0) {
result = this.compareByMsgRate(other);
}
if (result == 0) {
result = this.compareByTopicConnections(other);
}
if (result == 0) {
result = this.compareByCacheSize(other);
}
return result;
}
public int compareByMsgRate(NamespaceBundleStats other) {
double thisMsgRate = this.msgRateIn + this.msgRateOut;
double otherMsgRate = other.msgRateIn + other.msgRateOut;
if (Math.abs(thisMsgRate - otherMsgRate) > msgRateDifferenceThreshold) {
return Double.compare(thisMsgRate, otherMsgRate);
}
return 0;
}
public int compareByTopicConnections(NamespaceBundleStats other) {
long thisTopicsAndConnections = this.topics + this.consumerCount + this.producerCount;
long otherTopicsAndConnections = other.topics + other.consumerCount + other.producerCount;
if (Math.abs(thisTopicsAndConnections - otherTopicsAndConnections) > topicConnectionDifferenceThreshold) {
return Long.compare(thisTopicsAndConnections, otherTopicsAndConnections);
}
return 0;
}
public int compareByCacheSize(NamespaceBundleStats other) {
if (Math.abs(this.cacheSize - other.cacheSize) > cacheSizeDifferenceThreshold) {
return Long.compare(this.cacheSize, other.cacheSize);
}
return 0;
}
public int compareByBandwidthIn(NamespaceBundleStats other) {
if (Math.abs(this.msgThroughputIn - other.msgThroughputIn) > throughputDifferenceThreshold) {
return Double.compare(this.msgThroughputIn, other.msgThroughputIn);
}
return 0;
}
public int compareByBandwidthOut(NamespaceBundleStats other) {
if (Math.abs(this.msgThroughputOut - other.msgThroughputOut) > throughputDifferenceThreshold) {
return Double.compare(this.msgThroughputOut, other.msgThroughputOut);
}
return 0;
}
}