| /* |
| * 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.geode.internal.admin.remote; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.geode.distributed.internal.AdminMessageType; |
| import org.apache.geode.distributed.internal.ClusterDistributionManager; |
| import org.apache.geode.distributed.internal.PooledDistributionMessage; |
| |
| /** |
| * 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 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 <code>StatListenerMessage</code> |
| * |
| * @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 |
| * |
| * |
| */ |
| public void addChange(int listenerId, double value) { |
| listenerIds[changeCount] = listenerId; |
| values[changeCount] = value; |
| changeCount++; |
| } |
| |
| @Override |
| public void process(ClusterDistributionManager dm) { |
| RemoteGfManagerAgent agent = dm.getAgent(); |
| if (agent != null) { |
| RemoteGemFireVM mgr = agent.getMemberById(this.getSender()); |
| if (mgr != null) { |
| mgr.callStatListeners(timestamp, listenerIds, values); |
| } |
| } |
| } |
| |
| @Override |
| public int getDSFID() { |
| return STAT_LISTENER_MESSAGE; |
| } |
| |
| @Override |
| public boolean sendViaUDP() { |
| 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(); |
| } |
| } |
| |
| |
| } |