Examples of org.apache.commons.exec.DefaultExecutor

org.apache.commons.exec.DefaultExecutor
The default class to start a subprocess. The implementation allows to
- set a current working directory for the subprocess
- provide a set of environment variables passed to the subprocess
- capture the subprocess output of stdout and stderr using an ExecuteStreamHandler
- kill long-running processes using an ExecuteWatchdog
- define a set of expected exit values
- terminate any started processes when the main process is terminating using a ProcessDestroyer
The following example shows the basic usage:
```
 Executor exec = new DefaultExecutor(); CommandLine cl = new CommandLine("ls -l"); int exitvalue = exec.execute(cl); 
```

    @Test
    public void testIndexHtmlIsValid() throws ExecuteException, IOException {
        CommandLine cmdLine = CommandLine.parse("tidy");
        cmdLine.addArguments(new String[] {"-output", "/dev/null", "-quiet"});
        cmdLine.addArgument(file.getAbsolutePath());
        DefaultExecutor executor = new DefaultExecutor();
        int exitValue = executor.execute(cmdLine);
        assertEquals(0, exitValue);
    }

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      cl.addArguments(clojureArgs, false);
    }


    getLog().debug("Command line: " + cl.toString());


    Executor exec = new DefaultExecutor();
    Map<String, String> env = new HashMap<String, String>(System.getenv());
//        env.put("path", ";");
//        env.put("path", System.getProperty("java.home"));


    ExecuteStreamHandler handler = new PumpStreamHandler(System.out, System.err, System.in);
    exec.setStreamHandler(handler);
    exec.setWorkingDirectory(getWorkingDirectory());
    ShutdownHookProcessDestroyer destroyer = new ShutdownHookProcessDestroyer();
    exec.setProcessDestroyer(destroyer);


    int status;
    try {
      status = exec.execute(cl, env);
    } catch (ExecuteException e) {
      status = e.getExitValue();
    } catch (IOException e) {
      status = 1;
    }

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public class ExecWorkItemHandler implements WorkItemHandler {


  public void executeWorkItem(WorkItem workItem, WorkItemManager manager) {
    String command = (String) workItem.getParameter("Command");
    CommandLine commandLine = CommandLine.parse(command);
    DefaultExecutor executor = new DefaultExecutor();
    try {
      executor.execute(commandLine);
      manager.completeWorkItem(workItem.getId(), null);
    } catch (Throwable t) {
      t.printStackTrace();
      manager.abortWorkItem(workItem.getId());
    }

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                }
            }


            CommandLine commandLine = getExecutablePath( enviro, workingDirectory );


            Executor exec = new DefaultExecutor();


            String[] args = new String[commandArguments.size()];
            for ( int i = 0; i < commandArguments.size(); i++ )
            {
                args[i] = (String) commandArguments.get( i );
            }


            commandLine.addArguments( args, false );


            exec.setWorkingDirectory( workingDirectory );


            fillSuccessCodes(exec);
            
            // this code ensures the output gets logged vai maven logging, but at the same time prevents
            // partial line output, like input prompts.

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                LOGGER.debug(BUNDLE.get("INGEST_CONVERSION_COMMAND"), command);
            }


            final DefaultExecuteResultHandler handler = new DefaultExecuteResultHandler();
            final CommandLine cmdLine = CommandLine.parse(command);
            final DefaultExecutor executor = new DefaultExecutor();
            final ExecuteWatchdog watchdog = new ExecuteWatchdog(60000 * 10);
            final ByteArrayOutputStream error = new ByteArrayOutputStream();
            final ByteArrayOutputStream stdOut = new ByteArrayOutputStream();
            final Map<String, String> environment = EnvironmentUtils.getProcEnvironment();


            if (System.getProperty("os.name").toLowerCase().indexOf("mac") >= 0) {
                environment.put("DYLD_LIBRARY_PATH", kakadu);
            } else {
                environment.put("LD_LIBRARY_PATH", kakadu);
            }


            executor.setStreamHandler(new PumpStreamHandler(stdOut, error));
            executor.setWatchdog(watchdog);
            executor.execute(cmdLine, environment, handler);


            try {
                handler.waitFor();
            } catch (final InterruptedException details) {
                if (LOGGER.isErrorEnabled()) {

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                LOGGER.debug(BUNDLE.get("INGEST_CONVERSION_COMMAND"), command);
            }


            final DefaultExecuteResultHandler handler = new DefaultExecuteResultHandler();
            final CommandLine cmdLine = CommandLine.parse(command);
            final DefaultExecutor executor = new DefaultExecutor();
            final ExecuteWatchdog watchdog = new ExecuteWatchdog(60000 * 10);
            final ByteArrayOutputStream error = new ByteArrayOutputStream();
            final ByteArrayOutputStream stdOut = new ByteArrayOutputStream();
            final Map<String, String> environment = EnvironmentUtils.getProcEnvironment();


            if (System.getProperty("os.name").toLowerCase().indexOf("mac") >= 0) {
                environment.put("DYLD_LIBRARY_PATH", kakadu);
            } else {
                environment.put("LD_LIBRARY_PATH", kakadu);
            }


            executor.setStreamHandler(new PumpStreamHandler(stdOut, error));
            executor.setWatchdog(watchdog);
            executor.execute(cmdLine, environment, handler);


            try {
                handler.waitFor();
            } catch (final InterruptedException details) {
                if (LOGGER.isErrorEnabled()) {

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   * @VisibleForTesting
   */
  void doProcess(final InputStream in, final OutputStream out)
      throws ExecuteException, IOException {
    final ByteArrayOutputStream errorStream = new ByteArrayOutputStream();
    final Executor executor = new DefaultExecutor();
    executor.setStreamHandler(new PumpStreamHandler(out, errorStream, in));
    final int result = executor.execute(CommandLine.parse(NGMIN_COMMAND));
    LOG.debug("result={}", result);
    if (result != 0) {
      throw new ExecuteException("Processing failed: " + new String(errorStream.toByteArray()), result);
    }
  }

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  public void printJavaVersion() {
    CommandLine cmdLine = new CommandLine("java");
    cmdLine.addArgument("-version");
    DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
    Executor executor = new DefaultExecutor();
    try {
      executor.execute(cmdLine, resultHandler);
    } catch (ExecuteException e) {
      throw new RuntimeException(e);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }

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                }
            }


            CommandLine commandLine = getExecutablePath( enviro, workingDirectory );


            Executor exec = new DefaultExecutor();


            String[] args = new String[commandArguments.size()];
            for ( int i = 0; i < commandArguments.size(); i++ )
            {
                args[i] = (String) commandArguments.get( i );
            }


            commandLine.addArguments( args, false );


            exec.setWorkingDirectory( workingDirectory );


            fillSuccessCodes(exec);
            
            // this code ensures the output gets logged vai maven logging, but at the same time prevents
            // partial line output, like input prompts.

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            cl.addArguments(clojureArgs, false);
        }


        getLog().debug("Command line: " + cl.toString());


        Executor exec = new DefaultExecutor();
        Map<String, String> env = new HashMap<String, String>(System.getenv());
//        env.put("path", ";");
//        env.put("path", System.getProperty("java.home"));


        ExecuteStreamHandler handler = new PumpStreamHandler(System.out, System.err, System.in);
        exec.setStreamHandler(handler);
        exec.setWorkingDirectory(getWorkingDirectory());
        ShutdownHookProcessDestroyer destroyer = new ShutdownHookProcessDestroyer();
        exec.setProcessDestroyer(destroyer);


        int status;
        try {
            status = exec.execute(cl, env);
        } catch (ExecuteException e) {
            status = e.getExitValue();
        } catch (IOException e) {
            status = 1;
        }

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