Examples of org.apache.commons.exec.Executor

org.apache.commons.exec.Executor
The main abstraction to start an external process. The interface 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); 
```

      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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                }
            }


            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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   * @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.

View Full Code Here

            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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    }


    DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();


    ExecuteWatchdog watchdog = new ExecuteWatchdog(timeout);
    Executor executor = new DefaultExecutor();


    ByteArrayOutputStream stdout = new ByteArrayOutputStream();
    PumpStreamHandler streamHandler = new PumpStreamHandler(stdout);


    executor.setExitValue(1);
    executor.setStreamHandler(streamHandler);
    executor.setWatchdog(watchdog);


    try {
      executor.execute(cmdLine, resultHandler);
      logger.debug("executed commandLine '{}'", commandLine);
    } catch (ExecuteException e) {
      logger.error("couldn't execute commandLine '" + commandLine + "'",
          e);
    } catch (IOException e) {

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    }


    DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();


    ExecuteWatchdog watchdog = new ExecuteWatchdog(timeout);
    Executor executor = new DefaultExecutor();


    ByteArrayOutputStream stdout = new ByteArrayOutputStream();
    PumpStreamHandler streamHandler = new PumpStreamHandler(stdout);


    executor.setExitValue(1);
    executor.setStreamHandler(streamHandler);
    executor.setWatchdog(watchdog);


    try {
      executor.execute(cmdLine, resultHandler);
      logger.debug("executed commandLine '{}'", commandLine);
    } catch (ExecuteException e) {
      logger.error("couldn't execute commandLine '" + commandLine + "'", e);
    } catch (IOException e) {
      logger.error("couldn't execute commandLine '" + commandLine + "'", e);

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