/*
* 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.hadoop.jmx;
import static org.junit.Assert.*;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.http.HttpServer;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestJMXJsonServlet {
private static final Log LOG = LogFactory.getLog(TestJMXJsonServlet.class);
private static HttpServer server;
private static URL baseUrl;
private String readOutput(URL url) throws IOException {
StringBuilder out = new StringBuilder();
InputStream in = url.openConnection().getInputStream();
byte[] buffer = new byte[64 * 1024];
int len = in.read(buffer);
while (len > 0) {
out.append(new String(buffer, 0, len));
len = in.read(buffer);
}
return out.toString();
}
@BeforeClass public static void setup() throws Exception {
new File(System.getProperty("build.webapps", "build/webapps") + "/test"
).mkdirs();
server = new HttpServer("test", "0.0.0.0", 0, true);
server.start();
int port = server.getPort();
baseUrl = new URL("http://localhost:" + port + "/");
}
@AfterClass public static void cleanup() throws Exception {
server.stop();
}
public static void assertReFind(String re, String value) {
Pattern p = Pattern.compile(re);
Matcher m = p.matcher(value);
assertTrue("'"+p+"' does not match "+value, m.find());
}
@Test public void testQury() throws Exception {
String result = readOutput(new URL(baseUrl, "/jmx?qry=java.lang:type=Runtime"));
LOG.info("/jmx?qry=java.lang:type=Runtime RESULT: "+result);
assertReFind("\"name\"\\s*:\\s*\"java.lang:type=Runtime\"", result);
assertReFind("\"modelerType\"", result);
result = readOutput(new URL(baseUrl, "/jmx?qry=java.lang:type=Memory"));
LOG.info("/jmx?qry=java.lang:type=Memory RESULT: "+result);
assertReFind("\"name\"\\s*:\\s*\"java.lang:type=Memory\"", result);
assertReFind("\"modelerType\"", result);
result = readOutput(new URL(baseUrl, "/jmx"));
LOG.info("/jmx RESULT: "+result);
assertReFind("\"name\"\\s*:\\s*\"java.lang:type=Memory\"", result);
}
}