Examples of org.zeroturnaround.exec.ProcessExecutor

org.zeroturnaround.exec.ProcessExecutor
Helper for executing sub processes.
It's implemented as a wrapper of {@link ProcessBuilder} complementing it with additional features such as:
- Handling process streams (copied from Commons Exec library).
- Destroying process on VM exit (copied from Commons Exec library).
- Checking process exit code.
- Setting a timeout for running the process and automatically stopping it in case of timeout.
- Either waiting for the process to finish ( {@link #execute()}) or returning a {@link Future} ({@link #start()}.
- Reading the process output stream into a buffer ( {@link #readOutput(boolean)}, {@link ProcessResult}).
The default configuration for executing a process is following:
- Process is not automatically destroyed on VM exit.
- Error stream is redirected to its output stream. Use {@link #redirectErrorStream(boolean)} to override it.
- Output stream is pumped to a {@link NullOutputStream}, Use {@link #streams(ExecuteStreamHandler)}, {@link #redirectOutput(OutputStream)}, or any of the redirectOutputAs* methods.to override it.
- Any exit code is allowed. Use {@link #exitValues(Integer)} to override it.
- In case of timeout or cancellation {@link Process#destroy()} is invoked.

    System.exit(0);
  }


  public void run() {
    try {
      new ProcessExecutor("java", "-cp", "target/test-classes", WriterLoop.class.getName()).destroyOnExit().start();
      Thread.sleep(SLEEP_AFTER_START);
    }
    catch (Exception e) {
      e.printStackTrace();
    }

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public class WriterLoopStarterBeforeExit {


  private static final long SLEEP_AFTER_START = 2000;


  public static void main(String[] args) throws Exception {
    new ProcessExecutor("java", "-cp", "target/test-classes", WriterLoop.class.getName()).destroyOnExit().start();
    Thread.sleep(SLEEP_AFTER_START);
    // Cause the launched process to be destroyed
    System.exit(0);
  }

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  private void testDestroyOnExit(Class<?> starter, boolean fileIsAlwaysCreated) throws Exception {
    File file = WriterLoop.getFile();
    if (file.exists())
      FileUtils.forceDelete(file);
    new ProcessExecutor("java", "-cp", SystemUtils.JAVA_CLASS_PATH, starter.getName()).redirectOutputAsInfo().execute();
    // After WriterLoopStarter has finished we expect that WriterLoop is also finished - no-one is updating the file
    if (fileIsAlwaysCreated || file.exists()) {
      checkFileStaysTheSame(file);
      FileUtils.forceDelete(file);
    }

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                runAssertionCheckScript());
    }


    private int runAssertionCheckScript() throws Exception {
        assertTrue(wordAssertScript.exists());
        return new ProcessExecutor()
                .command(Arrays.asList("cmd", "/C", String.format("\"%s\"", wordAssertScript.getAbsolutePath())))
                .redirectOutput(Slf4jStream.of(LOGGER).asInfo())
                .redirectError(Slf4jStream.of(LOGGER).asInfo())
                .timeout(1L, TimeUnit.MINUTES)
                .exitValueAny()

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                .getExitValue();
    }


    public void kill() throws Exception {
        assertTrue(wordShutdownScript.exists());
        new ProcessExecutor()
                .command(Arrays.asList("cmd", "/C", String.format("\"%s\"", wordShutdownScript.getAbsolutePath())))
                .redirectOutput(Slf4jStream.of(LOGGER).asInfo())
                .redirectError(Slf4jStream.of(LOGGER).asInfo())
                .timeout(1L, TimeUnit.MINUTES)
                .exitValueAny()

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                download(new URL("http://media.mongodb.org/zips.json"), file);
            }
        }
        DBCollection zips = getDb().getCollection("zips");
        if (zips.count() == 0) {
            new ProcessExecutor().command(MONGO_IMPORT,
                                          "--db", getDb().getName(),
                                          "--collection", "zipcodes",
                                          "--file", file.getAbsolutePath())
                                 .redirectError(System.err)
                                 .execute();

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