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/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.InetAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordingFile;
import jdk.test.lib.process.OutputAnalyzer;
// This class is intended to run inside a container
public class JfrNetwork {
// use a unique hostname for container
public static final String HOST_NAME = "container-unique-8221711";
public static final String JFR_REPORTED_CONTAINER_HOSTNAME_TAG = "jfr_reported_container_hostname=";
public static void main(String[] args) throws Exception {
String event = args[0];
try (ServerSocket ss = new ServerSocket()) {
testNetworkInfo(ss, event);
}
}
private static void assertTrue(boolean expr, String msg) {
if (!expr) {
throw new RuntimeException(msg);
}
}
private static void testNetworkInfo(ServerSocket ss, String event) throws Exception {
ServerSocketListener server = new ServerSocketListener(ss);
server.start();
SocketWriter writer = new SocketWriter(ss.getLocalSocketAddress());
// setup and start the recording
String recordingPath = event + ".jfr";
log("========= Recording event: " + event);
Recording r = new Recording();
r.enable(event);
r.setDestination(Paths.get("/", "tmp", recordingPath));
r.start();
// start the socker writer thread, write some data into the socket
writer.start();
// wait for writer thread to terminate, then for server thread, then stop recording
writer.joinAndThrow();
server.joinAndThrow();
r.stop();
// analyze the recording
List<RecordedEvent> events = RecordingFile.readAllEvents(r.getDestination());
events.forEach(e -> log ("event = " + e));
assertTrue(!events.isEmpty(), "No recorded network events");
RecordedEvent e = events.get(0);
log(JFR_REPORTED_CONTAINER_HOSTNAME_TAG + e.getString("host"));
// compare IP addresses
boolean matchFound = false;
InetAddress reportedByJfr = InetAddress.getByName(e.getString("address"));
for (InetAddress ip : getLocalIp()) {
if (ip.equals(reportedByJfr)) {
matchFound = true;
break;
}
}
assertTrue(matchFound, "IP address match not found");
}
private static List<InetAddress> getLocalIp() throws Exception {
List<InetAddress> addrs = new ArrayList<>();
InetAddress localHost = InetAddress.getLocalHost();
if (!localHost.isLoopbackAddress()) {
addrs.add(localHost);
}
log("getLocalIp() returning:");
for (InetAddress addr : addrs) {
log(addr.getHostName());
log(addr.getHostAddress());
}
return addrs;
}
private static void log(String msg) {
System.out.println(msg);
}
private static class ServerSocketListener extends Thread {
Exception exception;
ServerSocket ss;
ServerSocketListener(ServerSocket socket) throws Exception {
ss = socket;
ss.setReuseAddress(true);
ss.bind(null);
log("ServerSocker Local Address: " + ss.getLocalSocketAddress());
}
public void joinAndThrow() throws Exception {
join();
if (exception != null) {
throw exception;
}
}
public void run() {
try {
try (Socket s = ss.accept(); InputStream is = s.getInputStream()) {
System.out.println("ServerSocketListener: accepted socket connection: s = " + s);
is.read();
is.read();
is.read();
}
} catch (Exception e) {
exception = e;
}
}
}
private static class SocketWriter extends Thread {
Exception exception;
private SocketAddress ssAddr;
public SocketWriter(SocketAddress sa) {
this.ssAddr = sa;
System.out.println("SocketWriter(): sa = " + sa);
}
public void joinAndThrow() throws Exception {
join();
if (exception != null) {
throw exception;
}
}
public void run() {
try (Socket s = new Socket()) {
s.connect(ssAddr);
try (OutputStream os = s.getOutputStream()) {
os.write('A');
os.write('B');
os.write('C');
}
} catch (Exception e) {
exception = e;
}
}
}
}
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