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/*
*
* 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.qpid.example.jmxexample;
import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import javax.net.ssl.SSLException;
/**
* Connects to a server and queries all info for Queues
* Includes _tmp queues thus covering queues underlying topic subscriptions
*/
public class QueueInformation {
private static long previousTimePoint = 0l;
private static Map<String, Long> previousRMC = new HashMap<String, Long>();
private static Map<String, Long> previousMC = new HashMap<String, Long>();
/**
* Params:
* 0: host, e.g. eqd-myserver.mydomain.com
* 1: port, e.g. 8999
* 2: vhost e.g. dev-only
* 3: username, e.g. guest
* 4: pwd, e.g. guest
* 5: loop pause, no value indicates one-off, any other value is millisecs
*/
public static void main(String[] args) throws Exception {
if (args.length < 5) {
System.out.println("Usage: ");
System.out.println("<host> <port> <vhost> <username> <pwd> <loop pause time in millisecs>");
return;
}
String host = args[0];
int port = Integer.parseInt(args[1]);
String vhost = args[2];
String usr = args[3];
String pwd = args[4];
long pause = args.length == 6 ? Long.parseLong(args[5]) : -1l;
getDetails(30000, host, port, vhost, usr, pwd, pause, true);
previousTimePoint = System.currentTimeMillis();
if (pause > 0) {
while (true) {
Thread.currentThread().sleep(pause);
getDetails(30000, host, port, vhost, usr, pwd, pause, false);
previousTimePoint = System.currentTimeMillis();
}
}
}
private static void getDetails(int timeout, String host, int port, String vhost, String username, String password, long pause, boolean printHeader) throws Exception {
JMXConnector con = getJMXConnection(timeout, host, port, username, password);
MBeanServerConnection mbsc = con.getMBeanServerConnection();
// Gets all Queues names
Set<ObjectName> names = mbsc.queryNames(new ObjectName("org.apache.qpid:type=VirtualHost.Queue,*"), null);
// Print header
if (names.size() > 0 && printHeader) {
System.out.print("Time,");
MBeanAttributeInfo[] attInfo = ((MBeanInfo) mbsc.getMBeanInfo((ObjectName) names.toArray()[0])).getAttributes();
for (int i = 0; attInfo.length > i; i++) {
System.out.print(attInfo[i].getName() + ",");
}
// Include update rate calculations
if (pause > 0) {
System.out.print("Consumption rate,");
System.out.print("Buildup rate");
}
System.out.print("\n");
}
// Traverse objects and print data on a row basis
for (ObjectName object : names) {
MBeanAttributeInfo[] attInfo = ((MBeanInfo) mbsc.getMBeanInfo(object)).getAttributes();
if (object.getCanonicalKeyPropertyListString().indexOf("VirtualHost=" + vhost) >= 0) {
String name = object.getKeyProperty("name");
// Include the "ping" queue
if (name.equals("ping")) {
System.out.print(Calendar.getInstance().getTime().toString().substring(11, 19) + ",");
for (int i = 0; attInfo.length > i; i++) {
System.out.print(mbsc.getAttribute(object, attInfo[i].getName()) + ",");
}
System.out.print("\n");
// Include the "tmp_*" queues
} else if (name.indexOf("tmp") >= 0) {
System.out.print(Calendar.getInstance().getTime().toString().substring(11, 19) + ",");
for (int i = 0; attInfo.length > i; i++) {
System.out.print(mbsc.getAttribute(object, attInfo[i].getName()) + ",");
}
// Output consumption rate calc
if (pause > 0) {
double timeDelta = (System.currentTimeMillis() - previousTimePoint) / 1000.0f;
long rmc2 = (Long) mbsc.getAttribute(object, "ReceivedMessageCount");
long mc2 = (Integer) mbsc.getAttribute(object, "MessageCount");
long rmc1 = 0l;
if (previousRMC.get(name) != null) {
rmc1 = previousRMC.get(name);
}
long mc1 = 0l;
if (previousMC.get(name) != null) {
mc1 = previousMC.get(name);
}
if (rmc1 > 0) {
double consumptionRate = ((rmc2 - rmc1) - (mc2 - mc1)) / timeDelta;
System.out.print(consumptionRate);
System.out.print(",");
double buildupRate = (mc2 - mc1) / timeDelta;
System.out.print(buildupRate);
} else {
System.out.print("null");
}
previousRMC.put(name, rmc2);
previousMC.put(name, mc2);
}
System.out.print("\n");
}
}
}
}
private static JMXConnector getJMXConnection(int timeout, String host, int port, String username, String password) throws SSLException, IOException, Exception {
//Open JMX connection
JMXServiceURL jmxUrl = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + host + ":" + port + "/jmxrmi");
Map<String, Object> env = new HashMap<String, Object>();
env.put(JMXConnector.CREDENTIALS, new String[]{username, password});
JMXConnector con = JMXConnectorFactory.connect(jmxUrl, env);
return con;
}
}
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