/*
* 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.distributed;
import java.io.PrintStream;
import java.util.Properties;
import static org.apache.geode.distributed.ConfigurationProperties.*;
/**
* This program is used to measure the amount of time it takes to connect and re-connect to a
* {@link DistributedSystem}.
*/
public class DistributedSystemConnectPerf {
private static final PrintStream out = System.out;
private static final PrintStream err = System.err;
private static void usage(String s) {
err.println("\n** " + s + "\n");
err.println("usage: java DistributedSystemConnectPerf " + "[options] port iterations");
err.println(" port Port on which locator runs");
err.println(" iterations Number of times to " + "connect/disconnect");
err.println("Where options are:");
err.println(" -wait time Time (in milliseconds) connection " + "is open");
err.println("");
err.println("This program measures the amount of time it takes "
+ "to connect/disconnect to a DistributedSystem");
err.println("");
System.exit(1);
}
public static void main(String[] args) throws Exception {
int port = -1;
int iterations = -1;
int wait = 0;
for (int i = 0; i < args.length; i++) {
if (args[i].equals("-wait")) {
if (++i >= args.length) {
usage("Missing wait time");
} else {
try {
wait = Integer.parseInt(args[i]);
} catch (NumberFormatException ex) {
usage("Malformed wait time: " + args[i]);
}
}
} else if (port == -1) {
try {
port = Integer.parseInt(args[i]);
} catch (NumberFormatException ex) {
usage("Malformed port: " + args[i]);
}
} else if (iterations == -1) {
try {
iterations = Integer.parseInt(args[i]);
} catch (NumberFormatException ex) {
usage("Malformed iterations: " + args[i]);
}
} else {
usage("Extraneous command line: " + args[i]);
}
}
if (port == -1) {
usage("Missing port");
} else if (iterations == -1) {
usage("Missing iterations");
}
System.setProperty("DistributionManager.VERBOSE", "true");
Properties props = new Properties();
props.setProperty(MCAST_PORT, "0");
props.setProperty(LOG_LEVEL, "info");
props.setProperty(LOCATORS, "localhost[" + port + "]");
long totalConnect = 0;
long totalDisconnect = 0;
for (int i = 0; i < iterations; i++) {
long start = System.currentTimeMillis();
DistributedSystem system = DistributedSystem.connect(props);
long delta = System.currentTimeMillis() - start;
totalConnect += delta;
out.println("** Connected to DistributedSystem " + "(took " + delta + " ms)");
Thread.sleep(wait);
start = System.currentTimeMillis();
system.disconnect();
delta = System.currentTimeMillis() - start;
totalDisconnect += delta;
out.println("** Disconnected from DistributedSystem " + "(took " + delta + " ms)");
}
out.println("** Average connect time took: " + (totalConnect / iterations) + " ms");
out.println("** Average disconnect time took: " + (totalDisconnect / iterations) + " ms");
System.exit(0);
}
}