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/*
* Copyright (c) 2020, 2023, 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.IOException;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
/*
* Utilities for process operations.
*/
public class ProcUtils {
/*
* Executes java program.
* After the program finishes, it returns OutputAnalyzer.
*/
public static OutputAnalyzer java(Path javaPath, Class<?> clazz,
Map<String, String> props) {
ProcessBuilder pb = createLimitedTestJavaProcessBuilder(javaPath, clazz, props);
try {
return ProcessTools.executeCommand(pb);
} catch (Throwable e) {
throw new RuntimeException("Executes java program failed!", e);
}
}
private static ProcessBuilder createLimitedTestJavaProcessBuilder(Path javaPath,
Class<?> clazz, Map<String, String> props) {
List<String> cmds = new ArrayList<>();
cmds.add(javaPath.toString());
if (props != null) {
for (Map.Entry<String, String> prop : props.entrySet()) {
cmds.add("-D" + prop.getKey() + "=" + prop.getValue());
}
}
cmds.add("-cp");
cmds.add(System.getProperty("test.class.path"));
cmds.add(clazz.getName());
ProcessBuilder pb = new ProcessBuilder(cmds);
pb.redirectErrorStream(true);
return pb;
}
/*
* Executes a shell command and return a OutputAnalyzer wrapping the process.
*/
public static OutputAnalyzer shell(String command, Map<String, String> env)
throws IOException {
Process process = shellProc(command, null, env);
return getProcessOutput(process);
}
/*
* Executes win command and return a OutputAnalyzer wrapping the process.
*/
public static OutputAnalyzer win(String command, Map<String, String> env)
throws IOException {
Process process = winProc(command, null, env);
return getProcessOutput(process);
}
/*
* Executes a shell command and return the process.
*/
public static Process shellProc(String command, Path outputPath,
Map<String, String> env) throws IOException {
String[] cmds = new String[3];
cmds[0] = "sh";
cmds[1] = "-c";
cmds[2] = command;
return startAndGetProc(cmds, outputPath, env);
}
/*
* Executes a win command and returns the process.
*/
public static Process winProc(String command, Path outputPath,
Map<String, String> env)
throws IOException {
String[] cmds = new String[3];
cmds[0] = "cmd.exe";
cmds[1] = "/C";
cmds[2] = command;
return startAndGetProc(cmds, outputPath, env);
}
/*
* Returns a OutputAnalyzer wrapping the process.
*/
private static OutputAnalyzer getProcessOutput (Process process) throws IOException {
OutputAnalyzer oa = new OutputAnalyzer(process);
try {
process.waitFor();
return oa;
} catch (InterruptedException e) {
throw new RuntimeException("Process is interrupted!", e);
}
}
/*
* Executes a command, redirects the output to a local file and returns the process.
*/
private static Process startAndGetProc(String[] cmds, Path outputPath, Map<String,
String> env) throws IOException {
System.out.println("command to run: " + Arrays.toString(cmds));
ProcessBuilder pb = new ProcessBuilder(cmds);
if (env != null) {
pb.environment().putAll(env);
}
pb.redirectErrorStream(true);
if (outputPath != null) {
pb.redirectOutput(outputPath.toFile());
}
return pb.start();
}
}
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