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/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* 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. See accompanying
* LICENSE file.
*/
package com.gemstone.gemfire.internal.admin.remote;
import com.gemstone.gemfire.distributed.internal.*;
//import com.gemstone.gemfire.*;
//import com.gemstone.gemfire.internal.*;
//import com.gemstone.gemfire.internal.admin.*;
import java.io.*;
//import java.util.*;
/**
* A message that is sent to a particular console distribution manager
* when changes have been detected that will be of interest to
* registered stat listeners.
*/
public final class StatListenerMessage extends PooledDistributionMessage
implements AdminMessageType {
//instance variables
private long timestamp;
private int changeCount;
private transient int[] listenerIds;
private transient double[] values;
/**
* Creates a new StatListenerMessage
*
* @param timestamp
* The time at which the statistics were sampled
* @param maxChanges
* The number of statistics that are reported in the message
*/
public static StatListenerMessage create(long timestamp, int maxChanges){
StatListenerMessage m = new StatListenerMessage();
m.timestamp = timestamp;
m.changeCount = 0;
m.listenerIds = new int[maxChanges];
m.values = new double[maxChanges];
return m;
}
/**
* Notes that the value of a given statistics has changed
*
* @param listenerId
*
*/
public void addChange(int listenerId, double value) {
listenerIds[changeCount] = listenerId;
values[changeCount] = value;
changeCount++;
}
@Override
public void process(DistributionManager dm) {
RemoteGfManagerAgent agent = dm.getAgent();
if (agent != null) {
RemoteGemFireVM mgr =
agent.getMemberById(this.getSender());
if (mgr != null) {
mgr.callStatListeners(timestamp, listenerIds, values);
}
}
}
public int getDSFID() {
return STAT_LISTENER_MESSAGE;
}
@Override
public boolean sendViaJGroups() {
return true;
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
out.writeLong(this.timestamp);
out.writeInt(this.changeCount);
for (int i = 0; i < this.changeCount; i++) {
out.writeInt(this.listenerIds[i]);
out.writeDouble(this.values[i]);
}
}
@Override
public void fromData(DataInput in) throws IOException,
ClassNotFoundException {
super.fromData(in);
this.timestamp = in.readLong();
this.changeCount = in.readInt();
this.listenerIds = new int[this.changeCount];
this.values = new double[this.changeCount];
for (int i = 0; i < this.changeCount; i++) {
this.listenerIds[i] = in.readInt();
this.values[i] = in.readDouble();
}
}
}