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/*
* Copyright (c) 2005, 2018, 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.
*
* 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.File;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.List;
import java.util.Properties;
import jdk.test.lib.thread.ProcessThread;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import com.sun.tools.attach.AgentInitializationException;
import com.sun.tools.attach.AgentLoadException;
import com.sun.tools.attach.VirtualMachine;
import com.sun.tools.attach.VirtualMachineDescriptor;
/*
* @test
* @bug 6173612 6273707 6277253 6335921 6348630 6342019 6381757
* @key intermittent
* @summary Basic unit tests for the VM attach mechanism. This test will perform
* a number of basic attach tests.
*
* @library /test/lib
* @modules java.instrument
* jdk.attach
* jdk.jartool/sun.tools.jar
*
* @run build Agent BadAgent RedefineAgent Application RedefineDummy RunnerUtil
* @run main BasicTests
*/
public class BasicTests {
/*
* The actual test is in the nested class TestMain.
* The responsibility of this class is to:
* 1. Build all needed jars.
* 2. Start the Application class in a separate process.
* 3. Find the pid and shutdown port of the running Application.
* 4. Launches the tests in nested class TestMain that will attach to the Application.
* 5. Shut down the Application.
*/
public static void main(String args[]) throws Throwable {
ProcessThread processThread = null;
try {
buildJars();
processThread = RunnerUtil.startApplication();
runTests(processThread.getPid());
} catch (Throwable t) {
System.out.println("TestBasic got unexpected exception: " + t);
t.printStackTrace();
throw t;
} finally {
// Make sure the Application process is stopped.
RunnerUtil.stopApplication(processThread);
}
}
/**
* Runs the actual tests in nested class TestMain.
* The reason for running the tests in a separate process
* is that we need to modify the class path.
*/
private static void runTests(long pid) throws Throwable {
final String sep = File.separator;
// Need to add jdk/lib/tools.jar to classpath.
String classpath =
System.getProperty("test.class.path", "");
String testClassDir = System.getProperty("test.classes", "") + sep;
// Argumenta : -classpath cp BasicTests$TestMain pid agent badagent redefineagent
String[] args = {
"-classpath",
classpath,
"BasicTests$TestMain",
Long.toString(pid),
testClassDir + "Agent.jar",
testClassDir + "BadAgent.jar",
testClassDir + "RedefineAgent.jar" };
OutputAnalyzer output = ProcessTools.executeTestJvm(args);
output.shouldHaveExitValue(0);
}
/**
* Will build all jars needed by the tests.
*/
private static void buildJars() throws Throwable {
String[] jars = {"Agent", "BadAgent", "RedefineAgent", "Application" };
for (String jar : jars) {
buildJar(jar);
}
}
/**
* Will build a jar with the given name.
* Class file and manifest must already exist.
* @param jarName Name of the jar.
*/
private static void buildJar(String jarName) throws Throwable {
String testClasses = System.getProperty("test.classes", "?");
String testSrc = System.getProperty("test.src", "?");
String jar = String.format("%s/%s.jar", testClasses, jarName);
String manifest = String.format("%s/%s.mf", testSrc, jarName.toLowerCase());
String clazz = String.format("%s.class", jarName);
// Arguments to the jar command has this format:
// "-cfm TESTCLASSES/Agent.jar TESTSRC/agent.mf -C TESTCLASSES Agent.class"
RunnerUtil.createJar("-cfm", jar, manifest, "-C", testClasses, clazz);
}
/**
* This is the actual test. It will attach to the running Application
* and perform a number of basic attach tests.
*/
public static class TestMain {
public static void main(String args[]) throws Exception {
String pid = args[0];
String agent = args[1];
String badagent = args[2];
String redefineagent = args[3];
System.out.println(" - Attaching to application ...");
VirtualMachine vm = VirtualMachine.attach(pid);
// Test 1 - read the system properties from the target VM and
// check that property is set
System.out.println(" - Test: system properties in target VM");
Properties props = vm.getSystemProperties();
String value = props.getProperty("attach.test");
if (value == null || !value.equals("true")) {
throw new RuntimeException("attach.test property not set");
}
System.out.println(" - attach.test property set as expected");
// Test 1a - read the agent properties from the target VM.
// By default, the agent property contains "sun.java.command",
// "sun.jvm.flags", and "sun.jvm.args".
// Just sanity check - make sure not empty.
System.out.println(" - Test: agent properties in target VM");
props = vm.getAgentProperties();
if (props == null || props.size() == 0) {
throw new RuntimeException("Agent properties is empty");
}
System.out.println(" - agent properties non-empty as expected");
// Test 2 - attempt to load an agent that does not exist
System.out.println(" - Test: Load an agent that does not exist");
try {
vm.loadAgent("SilverBullet.jar");
} catch (AgentLoadException x) {
System.out.println(" - AgentLoadException thrown as expected!");
}
// Test 3 - load an "bad" agent (agentmain throws an exception)
System.out.println(" - Test: Load a bad agent");
System.out.println("INFO: This test will cause error messages "
+ "to appear in the application log about SilverBullet.jar "
+ "not being found and an agent failing to start.");
try {
vm.loadAgent(badagent);
throw new RuntimeException(
"AgentInitializationException not thrown as expected!");
} catch (AgentInitializationException x) {
System.out.println(
" - AgentInitializationException thrown as expected!");
}
// Test 4 - detach from the VM and attempt a load (should throw IOE)
System.out.println(" - Test: Detach from VM");
System.out.println("INFO: This test will cause error messages "
+ "to appear in the application log about a BadAgent including "
+ "a RuntimeException and an InvocationTargetException.");
vm.detach();
try {
vm.loadAgent(agent);
throw new RuntimeException("loadAgent did not throw an exception!!");
} catch (IOException ioe) {
System.out.println(" - IOException as expected");
}
// Test 5 - functional "end-to-end" test.
// Create a listener socket. Load Agent.jar into the target VM passing
// it the port number of our listener. When agent loads it should connect
// back to the tool.
System.out.println(" - Re-attaching to application ...");
vm = VirtualMachine.attach(pid);
System.out.println(" - Test: End-to-end connection with agent");
ServerSocket ss = new ServerSocket(0);
int port = ss.getLocalPort();
System.out.println(" - Loading Agent.jar into target VM ...");
vm.loadAgent(agent, Integer.toString(port));
System.out.println(" - Waiting for agent to connect back to tool ...");
Socket s = ss.accept();
System.out.println(" - Connected to agent.");
// Test 5b - functional "end-to-end" test.
// Now with an agent that does redefine.
System.out.println(" - Re-attaching to application ...");
vm = VirtualMachine.attach(pid);
System.out.println(" - Test: End-to-end connection with RedefineAgent");
ServerSocket ss2 = new ServerSocket(0);
int port2 = ss2.getLocalPort();
System.out.println(" - Loading RedefineAgent.jar into target VM ...");
vm.loadAgent(redefineagent, Integer.toString(port2));
System.out.println(" - Waiting for RedefineAgent to connect back to tool ...");
Socket s2 = ss2.accept();
System.out.println(" - Connected to RedefineAgent.");
// Test 6 - list method should list the target VM
System.out.println(" - Test: VirtualMachine.list");
List<VirtualMachineDescriptor> l = VirtualMachine.list();
boolean found = false;
for (VirtualMachineDescriptor vmd: l) {
if (vmd.id().equals(pid)) {
found = true;
break;
}
}
if (found) {
System.out.println(" - " + pid + " found.");
} else {
throw new RuntimeException(pid + " not found in VM list");
}
// test 7 - basic hashCode/equals tests
System.out.println(" - Test: hashCode/equals");
VirtualMachine vm1 = VirtualMachine.attach(pid);
VirtualMachine vm2 = VirtualMachine.attach(pid);
if (!vm1.equals(vm2)) {
throw new RuntimeException("virtual machines are not equal");
}
if (vm.hashCode() != vm.hashCode()) {
throw new RuntimeException("virtual machine hashCodes not equal");
}
System.out.println(" - hashCode/equals okay");
// ---
System.out.println(" - Cleaning up...");
s.close();
ss.close();
s2.close();
ss2.close();
}
}
}
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