/*
* Copyright ( c ) 2014 , 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 com.sun.tools.attach.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Properties;
import java.util.List;
import java.io.File;
import jdk.test.lib.thread .ProcessThread;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
/*
* @ test
* @ bug 8033104
* @ summary Test to make sure attach and jvmstat works correctly when java . io . tmpdir is set
*
* @ library / test / lib
* @ modules jdk . attach
* jdk . jartool / sun . tools . jar
*
* @ run build Application RunnerUtil
* @ run main / timeout = 200 TempDirTest
*/
/*
* This test runs with an extra long timeout since it takes a really long time with - Xcomp
* when starting many processes .
*/
public class TempDirTest {
private static long startTime;
public static void main(String args[]) throws Throwable {
startTime = System.currentTimeMillis();
Path clientTmpDir = Files.createTempDirectory("TempDirTest-client" );
clientTmpDir.toFile().deleteOnExit();
Path targetTmpDir = Files.createTempDirectory("TempDirTest-target" );
targetTmpDir.toFile().deleteOnExit();
// run the test with all possible combinations of setting java.io.tmpdir
runExperiment(null , null );
runExperiment(clientTmpDir, null );
runExperiment(clientTmpDir, targetTmpDir);
runExperiment(null , targetTmpDir);
}
private static int counter = 0 ;
/*
* The actual test is in the nested class TestMain .
* The responsibility of this class is to :
* 1 . Start the Application class in a separate process .
* 2 . Find the pid and shutdown port of the running Application .
* 3 . Launches the tests in nested class TestMain that will attach to the Application .
* 4 . Shut down the Application .
*/
public static void runExperiment(Path clientTmpDir, Path targetTmpDir) throws Throwable {
System.out.print("### Running tests with overridden tmpdir for" );
System.out.print(" client: " + (clientTmpDir == null ? "no" : "yes" ));
System.out.print(" target: " + (targetTmpDir == null ? "no" : "yes" ));
System.out.println(" ###" );
long elapsedTime = (System.currentTimeMillis() - startTime) / 1000 ;
System.out.println("Started after " + elapsedTime + "s" );
final String pidFile = "TempDirTest.Application.pid-" + counter++;
ProcessThread processThread = null ;
try {
String[] tmpDirArg = null ;
if (targetTmpDir != null ) {
tmpDirArg = new String[] {"-Djava.io.tmpdir=" + targetTmpDir};
}
processThread = RunnerUtil.startApplication(tmpDirArg);
launchTests(processThread.getPid(), clientTmpDir);
} catch (Throwable t) {
System.out.println("TempDirTest got unexpected exception: " + t);
t.printStackTrace();
throw t;
} finally {
// Make sure the Application process is stopped.
RunnerUtil.stopApplication(processThread);
}
elapsedTime = (System.currentTimeMillis() - startTime) / 1000 ;
System.out.println("Completed after " + elapsedTime + "s" );
}
/**
* 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 and
* the - Djava . io . tmpdir property .
*/
private static void launchTests(long pid, Path clientTmpDir) throws Throwable {
final String sep = File.separator;
String classpath =
System.getProperty("test.class.path" , "" );
String[] tmpDirArg = null ;
if (clientTmpDir != null ) {
tmpDirArg = new String [] {"-Djava.io.tmpdir=" + clientTmpDir};
}
// Arguments : [-Djava.io.tmpdir=] -classpath cp TempDirTest$TestMain pid
String[] args = RunnerUtil.concat(
tmpDirArg,
new String[] {
"-classpath" ,
classpath,
"TempDirTest$TestMain" ,
Long .toString(pid) });
OutputAnalyzer output = ProcessTools.executeTestJvm(args);
output.shouldHaveExitValue(0 );
}
/**
* 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 ];
// Test 1 - 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 2 - try to attach and verify connection
System.out.println(" - Attaching to application ..." );
VirtualMachine vm = VirtualMachine.attach(pid);
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" );
}
}
}
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