jdk/test/sun/tools/jps/JpsHelper.java - edge/openjdk - Git at Google

 /*
  * Copyright (c) 2014, 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 static jdk.testlibrary.Asserts.assertGreaterThan;
 import static jdk.testlibrary.Asserts.assertTrue;

 import java.io.BufferedWriter;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 import jdk.testlibrary.Asserts;
 import jdk.testlibrary.JDKToolLauncher;
 import jdk.testlibrary.OutputAnalyzer;
 import jdk.testlibrary.Utils;

 /**
  * The helper class for running jps utility and verifying output from it
  */
 public final class JpsHelper {

     /**
      * Helper class for handling jps arguments
      */
     public enum JpsArg {
         q,
         l,
         m,
         v,
         V;

         /**
          * Generate all possible combinations of {@link JpsArg}
          * (31 argument combinations and no arguments case)
          */
         public static List<List<JpsArg>> generateCombinations() {
             final int argCount = JpsArg.values().length;
             // If there are more than 30 args this algorithm will overflow.
             Asserts.assertLessThan(argCount, 31, "Too many args");

             List<List<JpsArg>> combinations = new ArrayList<>();
             int combinationCount = (int) Math.pow(2, argCount);
             for (int currCombo = 0; currCombo < combinationCount; ++currCombo) {
                 List<JpsArg> combination = new ArrayList<>();
                 for (int position = 0; position < argCount; ++position) {
                     int bit = 1 << position;
                     if ((bit & currCombo) != 0) {
                         combination.add(JpsArg.values()[position]);
                     }
                 }
                 combinations.add(combination);
             }
             return combinations;
         }

         /**
          *  Return combination of {@link JpsArg} as a String array
          */
         public static String[] asCmdArray(List<JpsArg> jpsArgs) {
             List<String> list = new ArrayList<>();
             for (JpsArg jpsArg : jpsArgs) {
                 list.add("-" + jpsArg.toString());
             }
             return list.toArray(new String[list.size()]);
         }

     }

     /**
      * VM arguments to start test application with
      */
     public static final String[] VM_ARGS = {"-Xmx512m", "-XX:+PrintGCDetails"};
     /**
      * VM flag to start test application with
      */
     public static final String VM_FLAG = "+DisableExplicitGC";

     private static File vmFlagsFile = null;
     private static List<String> testVmArgs = null;
     private static File manifestFile = null;

     /**
      * Create a file containing VM_FLAG in the working directory
      */
     public static File getVmFlagsFile() throws IOException {
         if (vmFlagsFile == null) {
             vmFlagsFile = new File("vmflags");
             try (BufferedWriter output = new BufferedWriter(new FileWriter(vmFlagsFile))) {
                 output.write(VM_FLAG);
             }
             vmFlagsFile.deleteOnExit();
         }
         return vmFlagsFile;
     }

     /**
      * Return a list of VM arguments
      */
     public static List<String> getVmArgs() throws IOException {
         if (testVmArgs == null) {
             testVmArgs = new ArrayList<>();
             testVmArgs.addAll(Arrays.asList(VM_ARGS));
             testVmArgs.add("-XX:Flags=" + getVmFlagsFile().getAbsolutePath());
         }
         return testVmArgs;
     }

     /**
      * Start jps utility without any arguments
      */
     public static OutputAnalyzer jps() throws Exception {
         return jps(null, null);
     }

     /**
      * Start jps utility with tool arguments
      */
     public static OutputAnalyzer jps(String... toolArgs) throws Exception {
         return jps(null, Arrays.asList(toolArgs));
     }

     /**
      * Start jps utility with VM args and tool arguments
      */
     public static OutputAnalyzer jps(List<String> vmArgs, List<String> toolArgs) throws Exception {
         JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jps");
         if (vmArgs != null) {
             for (String vmArg : vmArgs) {
                 launcher.addVMArg(vmArg);
             }
         }
         if (toolArgs != null) {
             for (String toolArg : toolArgs) {
                 launcher.addToolArg(toolArg);
             }
         }

         ProcessBuilder processBuilder = new ProcessBuilder(launcher.getCommand());
         System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
         OutputAnalyzer output = new OutputAnalyzer(processBuilder.start());
         System.out.println(output.getOutput());

         return output;
     }

     /**
      * Verify jps output contains pids and programs' name information.
      * The function will discard any lines that come before the first line with pid.
      * This can happen if the JVM outputs a warning message for some reason
      * before running jps.
      *
      * The output can look like:
      * 35536 Jps
      * 35417 Main
      * 31103 org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
      */
     public static void verifyJpsOutput(OutputAnalyzer output, String regex) throws Exception {
         output.shouldHaveExitValue(0);
         int matchedCount = output.shouldMatchByLineFrom(regex, regex);
         assertGreaterThan(matchedCount , 0, "Found no lines matching pattern: " + regex);
     }

     /**
      * Compare jps output with a content in a file line by line
      */
     public static void verifyOutputAgainstFile(OutputAnalyzer output) throws IOException {
         String testSrc = System.getProperty("test.src", "?");
         File file = new File(testSrc, "usage.out");
         List<String> fileOutput = Utils.fileAsList(file);
         List<String> outputAsLines = output.asLines();
         assertTrue(outputAsLines.containsAll(fileOutput),
                 "The ouput should contain all content of " + file.getAbsolutePath());
     }

     private static File getManifest(String className) throws IOException {
         if (manifestFile == null) {
             manifestFile = new File(className + ".mf");
             try (BufferedWriter output = new BufferedWriter(new FileWriter(manifestFile))) {
                 output.write("Main-Class: " + className + Utils.NEW_LINE);
             }
         }
         return manifestFile;
     }

     /**
      * Build a jar of test classes in runtime
      */
     public static File buildJar(String className) throws Exception {
         File jar = new File(className + ".jar");

         List<String> jarArgs = new ArrayList<>();
         jarArgs.add("-cfm");
         jarArgs.add(jar.getAbsolutePath());
         File manifestFile = getManifest(className);
         jarArgs.add(manifestFile.getAbsolutePath());
         String testClassPath = System.getProperty("test.class.path", "?");
         for (String path : testClassPath.split(File.pathSeparator)) {
             jarArgs.add("-C");
             jarArgs.add(path);
             jarArgs.add(".");
         }

         System.out.println("Running jar " + jarArgs.toString());
         sun.tools.jar.Main jarTool = new sun.tools.jar.Main(System.out, System.err, "jar");
         if (!jarTool.run(jarArgs.toArray(new String[jarArgs.size()]))) {
             throw new Exception("jar failed: args=" + jarArgs.toString());
         }

         manifestFile.delete();
         jar.deleteOnExit();

         return jar;
     }

 }
	/*
	* Copyright (c) 2014, 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 static jdk.testlibrary.Asserts.assertGreaterThan;
	import static jdk.testlibrary.Asserts.assertTrue;

	import java.io.BufferedWriter;
	import java.io.File;
	import java.io.FileWriter;
	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	import jdk.testlibrary.Asserts;
	import jdk.testlibrary.JDKToolLauncher;
	import jdk.testlibrary.OutputAnalyzer;
	import jdk.testlibrary.Utils;

	/**
	* The helper class for running jps utility and verifying output from it
	*/
	public final class JpsHelper {

	/**
	* Helper class for handling jps arguments
	*/
	public enum JpsArg {
	q,
	l,
	m,
	v,
	V;

	/**
	* Generate all possible combinations of {@link JpsArg}
	* (31 argument combinations and no arguments case)
	*/
	public static List<List<JpsArg>> generateCombinations() {
	final int argCount = JpsArg.values().length;
	// If there are more than 30 args this algorithm will overflow.
	Asserts.assertLessThan(argCount, 31, "Too many args");

	List<List<JpsArg>> combinations = new ArrayList<>();
	int combinationCount = (int) Math.pow(2, argCount);
	for (int currCombo = 0; currCombo < combinationCount; ++currCombo) {
	List<JpsArg> combination = new ArrayList<>();
	for (int position = 0; position < argCount; ++position) {
	int bit = 1 << position;
	if ((bit & currCombo) != 0) {
	combination.add(JpsArg.values()[position]);
	}
	}
	combinations.add(combination);
	}
	return combinations;
	}

	/**
	* Return combination of {@link JpsArg} as a String array
	*/
	public static String[] asCmdArray(List<JpsArg> jpsArgs) {
	List<String> list = new ArrayList<>();
	for (JpsArg jpsArg : jpsArgs) {
	list.add("-" + jpsArg.toString());
	}
	return list.toArray(new String[list.size()]);
	}

	}

	/**
	* VM arguments to start test application with
	*/
	public static final String[] VM_ARGS = {"-Xmx512m", "-XX:+PrintGCDetails"};
	/**
	* VM flag to start test application with
	*/
	public static final String VM_FLAG = "+DisableExplicitGC";

	private static File vmFlagsFile = null;
	private static List<String> testVmArgs = null;
	private static File manifestFile = null;

	/**
	* Create a file containing VM_FLAG in the working directory
	*/
	public static File getVmFlagsFile() throws IOException {
	if (vmFlagsFile == null) {
	vmFlagsFile = new File("vmflags");
	try (BufferedWriter output = new BufferedWriter(new FileWriter(vmFlagsFile))) {
	output.write(VM_FLAG);
	}
	vmFlagsFile.deleteOnExit();
	}
	return vmFlagsFile;
	}

	/**
	* Return a list of VM arguments
	*/
	public static List<String> getVmArgs() throws IOException {
	if (testVmArgs == null) {
	testVmArgs = new ArrayList<>();
	testVmArgs.addAll(Arrays.asList(VM_ARGS));
	testVmArgs.add("-XX:Flags=" + getVmFlagsFile().getAbsolutePath());
	}
	return testVmArgs;
	}

	/**
	* Start jps utility without any arguments
	*/
	public static OutputAnalyzer jps() throws Exception {
	return jps(null, null);
	}

	/**
	* Start jps utility with tool arguments
	*/
	public static OutputAnalyzer jps(String... toolArgs) throws Exception {
	return jps(null, Arrays.asList(toolArgs));
	}

	/**
	* Start jps utility with VM args and tool arguments
	*/
	public static OutputAnalyzer jps(List<String> vmArgs, List<String> toolArgs) throws Exception {
	JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jps");
	if (vmArgs != null) {
	for (String vmArg : vmArgs) {
	launcher.addVMArg(vmArg);
	}
	}
	if (toolArgs != null) {
	for (String toolArg : toolArgs) {
	launcher.addToolArg(toolArg);
	}
	}

	ProcessBuilder processBuilder = new ProcessBuilder(launcher.getCommand());
	System.out.println(Arrays.toString(processBuilder.command().toArray()).replace(",", ""));
	OutputAnalyzer output = new OutputAnalyzer(processBuilder.start());
	System.out.println(output.getOutput());

	return output;
	}

	/**
	* Verify jps output contains pids and programs' name information.
	* The function will discard any lines that come before the first line with pid.
	* This can happen if the JVM outputs a warning message for some reason
	* before running jps.
	*
	* The output can look like:
	* 35536 Jps
	* 35417 Main
	* 31103 org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
	*/
	public static void verifyJpsOutput(OutputAnalyzer output, String regex) throws Exception {
	output.shouldHaveExitValue(0);
	int matchedCount = output.shouldMatchByLineFrom(regex, regex);
	assertGreaterThan(matchedCount , 0, "Found no lines matching pattern: " + regex);
	}

	/**
	* Compare jps output with a content in a file line by line
	*/
	public static void verifyOutputAgainstFile(OutputAnalyzer output) throws IOException {
	String testSrc = System.getProperty("test.src", "?");
	File file = new File(testSrc, "usage.out");
	List<String> fileOutput = Utils.fileAsList(file);
	List<String> outputAsLines = output.asLines();
	assertTrue(outputAsLines.containsAll(fileOutput),
	"The ouput should contain all content of " + file.getAbsolutePath());
	}

	private static File getManifest(String className) throws IOException {
	if (manifestFile == null) {
	manifestFile = new File(className + ".mf");
	try (BufferedWriter output = new BufferedWriter(new FileWriter(manifestFile))) {
	output.write("Main-Class: " + className + Utils.NEW_LINE);
	}
	}
	return manifestFile;
	}

	/**
	* Build a jar of test classes in runtime
	*/
	public static File buildJar(String className) throws Exception {
	File jar = new File(className + ".jar");

	List<String> jarArgs = new ArrayList<>();
	jarArgs.add("-cfm");
	jarArgs.add(jar.getAbsolutePath());
	File manifestFile = getManifest(className);
	jarArgs.add(manifestFile.getAbsolutePath());
	String testClassPath = System.getProperty("test.class.path", "?");
	for (String path : testClassPath.split(File.pathSeparator)) {
	jarArgs.add("-C");
	jarArgs.add(path);
	jarArgs.add(".");
	}

	System.out.println("Running jar " + jarArgs.toString());
	sun.tools.jar.Main jarTool = new sun.tools.jar.Main(System.out, System.err, "jar");
	if (!jarTool.run(jarArgs.toArray(new String[jarArgs.size()]))) {
	throw new Exception("jar failed: args=" + jarArgs.toString());
	}

	manifestFile.delete();
	jar.deleteOnExit();

	return jar;
	}

	}