org.argeo.slc.runtime/src/org/argeo/slc/runtime/tasks/SystemCall.java

   1 package org.argeo.slc.runtime.tasks;
   2
   3 import java.io.File;
   4 import java.io.FileOutputStream;
   5 import java.io.FileWriter;
   6 import java.io.IOException;
   7 import java.io.InputStream;
   8 import java.io.OutputStream;
   9 import java.io.PipedInputStream;
  10 import java.io.PipedOutputStream;
  11 import java.io.Writer;
  12 import java.nio.file.Files;
  13 import java.nio.file.Path;
  14 import java.util.ArrayList;
  15 import java.util.Collections;
  16 import java.util.HashMap;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.UUID;
  20
  21 import javax.security.auth.callback.CallbackHandler;
  22
  23 import org.apache.commons.exec.CommandLine;
  24 import org.apache.commons.exec.DefaultExecutor;
  25 import org.apache.commons.exec.ExecuteException;
  26 import org.apache.commons.exec.ExecuteResultHandler;
  27 import org.apache.commons.exec.ExecuteStreamHandler;
  28 import org.apache.commons.exec.ExecuteWatchdog;
  29 import org.apache.commons.exec.Executor;
  30 import org.apache.commons.exec.LogOutputStream;
  31 import org.apache.commons.exec.PumpStreamHandler;
  32 import org.apache.commons.exec.ShutdownHookProcessDestroyer;
  33 import org.apache.commons.io.FileUtils;
  34 import org.apache.commons.io.IOUtils;
  35 import org.apache.commons.logging.Log;
  36 import org.apache.commons.logging.LogFactory;
  37 import org.argeo.slc.SlcException;
  38 import org.argeo.slc.UnsupportedException;
  39 import org.argeo.slc.execution.ExecutionResources;
  40 import org.argeo.slc.runtime.test.SimpleResultPart;
  41 import org.argeo.slc.test.TestResult;
  42 import org.argeo.slc.test.TestStatus;
  43
  44 /** Execute an OS specific system call. */
  45 public class SystemCall implements Runnable {
  46         public final static String LOG_STDOUT = "System.out";
  47
  48         private final Log log = LogFactory.getLog(getClass());
  49
  50         private String execDir;
  51
  52         private String cmd = null;
  53         private List<Object> command = null;
  54
  55         private Executor executor = new DefaultExecutor();
  56         private Boolean synchronous = true;
  57
  58         private String stdErrLogLevel = "ERROR";
  59         private String stdOutLogLevel = "INFO";
  60
  61         private Path stdOutFile = null;
  62         private Path stdErrFile = null;
  63
  64         private Path stdInFile = null;
  65         /**
  66          * If no {@link #stdInFile} provided, writing to this stream will write to the
  67          * stdin of the process.
  68          */
  69         private OutputStream stdInSink = null;
  70
  71         private Boolean redirectStdOut = false;
  72
  73         private List<SystemCallOutputListener> outputListeners = Collections
  74                         .synchronizedList(new ArrayList<SystemCallOutputListener>());
  75
  76         private Map<String, List<Object>> osCommands = new HashMap<String, List<Object>>();
  77         private Map<String, String> osCmds = new HashMap<String, String>();
  78         private Map<String, String> environmentVariables = new HashMap<String, String>();
  79
  80         private Boolean logCommand = false;
  81         private Boolean redirectStreams = true;
  82         private Boolean exceptionOnFailed = true;
  83         private Boolean mergeEnvironmentVariables = true;
  84
  85 //      private Authentication authentication;
  86
  87         private String osConsole = null;
  88         private String generateScript = null;
  89
  90         /** 24 hours */
  91         private Long watchdogTimeout = 24 * 60 * 60 * 1000l;
  92
  93         private TestResult testResult;
  94
  95         private ExecutionResources executionResources;
  96
  97         /** Sudo the command, as root if empty or as user if not. */
  98         private String sudo = null;
  99         // TODO make it more secure and robust, test only once
 100         private final String sudoPrompt = UUID.randomUUID().toString();
 101         private String askPassProgram = "/usr/libexec/openssh/ssh-askpass";
 102         @SuppressWarnings("unused")
 103         private boolean firstLine = true;
 104         @SuppressWarnings("unused")
 105         private CallbackHandler callbackHandler;
 106         /** Chroot to the this path (must not be empty) */
 107         private String chroot = null;
 108
 109         // Current
 110         /** Current watchdog, null if process is completed */
 111         ExecuteWatchdog currentWatchdog = null;
 112
 113         /** Empty constructor */
 114         public SystemCall() {
 115
 116         }
 117
 118         /**
 119          * Constructor based on the provided command list.
 120          *
 121          * @param command the command list
 122          */
 123         public SystemCall(List<Object> command) {
 124                 this.command = command;
 125         }
 126
 127         /**
 128          * Constructor based on the provided command.
 129          *
 130          * @param cmd the command. If the provided string contains no space a command
 131          *            list is initialized with the argument as first component (useful
 132          *            for chained construction)
 133          */
 134         public SystemCall(String cmd) {
 135                 if (cmd.indexOf(' ') < 0) {
 136                         command = new ArrayList<Object>();
 137                         command.add(cmd);
 138                 } else {
 139                         this.cmd = cmd;
 140                 }
 141         }
 142
 143         /** Executes the system call. */
 144         public void run() {
 145 //              authentication = SecurityContextHolder.getContext().getAuthentication();
 146
 147                 // Manage streams
 148                 Writer stdOutWriter = null;
 149                 OutputStream stdOutputStream = null;
 150                 Writer stdErrWriter = null;
 151                 InputStream stdInStream = null;
 152                 if (stdOutFile != null)
 153                         if (redirectStdOut)
 154                                 stdOutputStream = createOutputStream(stdOutFile);
 155                         else
 156                                 stdOutWriter = createWriter(stdOutFile, true);
 157
 158                 if (stdErrFile != null) {
 159                         stdErrWriter = createWriter(stdErrFile, true);
 160                 } else {
 161                         if (stdOutFile != null && !redirectStdOut)
 162                                 stdErrWriter = createWriter(stdOutFile, true);
 163                 }
 164
 165                 try {
 166                         if (stdInFile != null)
 167                                 stdInStream = Files.newInputStream(stdInFile);
 168                         else {
 169                                 stdInStream = new PipedInputStream();
 170                                 stdInSink = new PipedOutputStream((PipedInputStream) stdInStream);
 171                         }
 172                 } catch (IOException e2) {
 173                         throw new SlcException("Cannot open a stream for " + stdInFile, e2);
 174                 }
 175
 176                 if (log.isTraceEnabled()) {
 177                         log.debug("os.name=" + System.getProperty("os.name"));
 178                         log.debug("os.arch=" + System.getProperty("os.arch"));
 179                         log.debug("os.version=" + System.getProperty("os.version"));
 180                 }
 181
 182                 // Execution directory
 183                 File dir = new File(getExecDirToUse());
 184                 // if (!dir.exists())
 185                 // dir.mkdirs();
 186
 187                 // Watchdog to check for lost processes
 188                 Executor executorToUse;
 189                 if (executor != null)
 190                         executorToUse = executor;
 191                 else
 192                         executorToUse = new DefaultExecutor();
 193                 executorToUse.setWatchdog(createWatchdog());
 194
 195                 if (redirectStreams) {
 196                         // Redirect standard streams
 197                         executorToUse.setStreamHandler(
 198                                         createExecuteStreamHandler(stdOutWriter, stdOutputStream, stdErrWriter, stdInStream));
 199                 } else {
 200                         // Dummy stream handler (otherwise pump is used)
 201                         executorToUse.setStreamHandler(new DummyexecuteStreamHandler());
 202                 }
 203
 204                 executorToUse.setProcessDestroyer(new ShutdownHookProcessDestroyer());
 205                 executorToUse.setWorkingDirectory(dir);
 206
 207                 // Command line to use
 208                 final CommandLine commandLine = createCommandLine();
 209                 if (logCommand)
 210                         log.info("Execute command:\n" + commandLine + "\n in working directory: \n" + dir + "\n");
 211
 212                 // Env variables
 213                 Map<String, String> environmentVariablesToUse = null;
 214                 environmentVariablesToUse = new HashMap<String, String>();
 215                 if (mergeEnvironmentVariables)
 216                         environmentVariablesToUse.putAll(System.getenv());
 217                 if (environmentVariables.size() > 0)
 218                         environmentVariablesToUse.putAll(environmentVariables);
 219
 220                 // Execute
 221                 ExecuteResultHandler executeResultHandler = createExecuteResultHandler(commandLine);
 222
 223                 //
 224                 // THE EXECUTION PROPER
 225                 //
 226                 try {
 227                         if (synchronous)
 228                                 try {
 229                                         int exitValue = executorToUse.execute(commandLine, environmentVariablesToUse);
 230                                         executeResultHandler.onProcessComplete(exitValue);
 231                                 } catch (ExecuteException e1) {
 232                                         if (e1.getExitValue() == Executor.INVALID_EXITVALUE) {
 233                                                 Thread.currentThread().interrupt();
 234                                                 return;
 235                                         }
 236                                         // Sleep 1s in order to make sure error logs are flushed
 237                                         Thread.sleep(1000);
 238                                         executeResultHandler.onProcessFailed(e1);
 239                                 }
 240                         else
 241                                 executorToUse.execute(commandLine, environmentVariablesToUse, executeResultHandler);
 242                 } catch (SlcException e) {
 243                         throw e;
 244                 } catch (Exception e) {
 245                         throw new SlcException("Could not execute command " + commandLine, e);
 246                 } finally {
 247                         IOUtils.closeQuietly(stdOutWriter);
 248                         IOUtils.closeQuietly(stdErrWriter);
 249                         IOUtils.closeQuietly(stdInStream);
 250                         IOUtils.closeQuietly(stdInSink);
 251                 }
 252
 253         }
 254
 255         public synchronized String function() {
 256                 final StringBuffer buf = new StringBuffer("");
 257                 SystemCallOutputListener tempOutputListener = new SystemCallOutputListener() {
 258                         private Long lineCount = 0l;
 259
 260                         public void newLine(SystemCall systemCall, String line, Boolean isError) {
 261                                 if (!isError) {
 262                                         if (lineCount != 0l)
 263                                                 buf.append('\n');
 264                                         buf.append(line);
 265                                         lineCount++;
 266                                 }
 267                         }
 268                 };
 269                 addOutputListener(tempOutputListener);
 270                 run();
 271                 removeOutputListener(tempOutputListener);
 272                 return buf.toString();
 273         }
 274
 275         public String asCommand() {
 276                 return createCommandLine().toString();
 277         }
 278
 279         @Override
 280         public String toString() {
 281                 return asCommand();
 282         }
 283
 284         /**
 285          * Build a command line based on the properties. Can be overridden by specific
 286          * command wrappers.
 287          */
 288         protected CommandLine createCommandLine() {
 289                 // Check if an OS specific command overrides
 290                 String osName = System.getProperty("os.name");
 291                 List<Object> commandToUse = null;
 292                 if (osCommands.containsKey(osName))
 293                         commandToUse = osCommands.get(osName);
 294                 else
 295                         commandToUse = command;
 296                 String cmdToUse = null;
 297                 if (osCmds.containsKey(osName))
 298                         cmdToUse = osCmds.get(osName);
 299                 else
 300                         cmdToUse = cmd;
 301
 302                 CommandLine commandLine = null;
 303
 304                 // Which command definition to use
 305                 if (commandToUse == null && cmdToUse == null)
 306                         throw new SlcException("Please specify a command.");
 307                 else if (commandToUse != null && cmdToUse != null)
 308                         throw new SlcException("Specify the command either as a line or as a list.");
 309                 else if (cmdToUse != null) {
 310                         if (chroot != null && !chroot.trim().equals(""))
 311                                 cmdToUse = "chroot \"" + chroot + "\" " + cmdToUse;
 312                         if (sudo != null) {
 313                                 environmentVariables.put("SUDO_ASKPASS", askPassProgram);
 314                                 if (!sudo.trim().equals(""))
 315                                         cmdToUse = "sudo -p " + sudoPrompt + " -u " + sudo + " " + cmdToUse;
 316                                 else
 317                                         cmdToUse = "sudo -p " + sudoPrompt + " " + cmdToUse;
 318                         }
 319
 320                         // GENERATE COMMAND LINE
 321                         commandLine = CommandLine.parse(cmdToUse);
 322                 } else if (commandToUse != null) {
 323                         if (commandToUse.size() == 0)
 324                                 throw new SlcException("Command line is empty.");
 325
 326                         if (chroot != null && sudo != null) {
 327                                 commandToUse.add(0, "chroot");
 328                                 commandToUse.add(1, chroot);
 329                         }
 330
 331                         if (sudo != null) {
 332                                 environmentVariables.put("SUDO_ASKPASS", askPassProgram);
 333                                 commandToUse.add(0, "sudo");
 334                                 commandToUse.add(1, "-p");
 335                                 commandToUse.add(2, sudoPrompt);
 336                                 if (!sudo.trim().equals("")) {
 337                                         commandToUse.add(3, "-u");
 338                                         commandToUse.add(4, sudo);
 339                                 }
 340                         }
 341
 342                         // GENERATE COMMAND LINE
 343                         commandLine = new CommandLine(commandToUse.get(0).toString());
 344
 345                         for (int i = 1; i < commandToUse.size(); i++) {
 346                                 if (log.isTraceEnabled())
 347                                         log.debug(commandToUse.get(i));
 348                                 commandLine.addArgument(commandToUse.get(i).toString());
 349                         }
 350                 } else {
 351                         // all cases covered previously
 352                         throw new UnsupportedException();
 353                 }
 354
 355                 if (generateScript != null) {
 356                         File scriptFile = new File(getExecDirToUse() + File.separator + generateScript);
 357                         try {
 358                                 FileUtils.writeStringToFile(scriptFile,
 359                                                 (osConsole != null ? osConsole + " " : "") + commandLine.toString());
 360                         } catch (IOException e) {
 361                                 throw new SlcException("Could not generate script " + scriptFile, e);
 362                         }
 363                         commandLine = new CommandLine(scriptFile);
 364                 } else {
 365                         if (osConsole != null)
 366                                 commandLine = CommandLine.parse(osConsole + " " + commandLine.toString());
 367                 }
 368
 369                 return commandLine;
 370         }
 371
 372         /**
 373          * Creates a {@link PumpStreamHandler} which redirects streams to the custom
 374          * logging mechanism.
 375          */
 376         protected ExecuteStreamHandler createExecuteStreamHandler(final Writer stdOutWriter,
 377                         final OutputStream stdOutputStream, final Writer stdErrWriter, final InputStream stdInStream) {
 378
 379                 // Log writers
 380                 OutputStream stdout = stdOutputStream != null ? stdOutputStream : new LogOutputStream() {
 381                         protected void processLine(String line, int level) {
 382                                 // if (firstLine) {
 383                                 // if (sudo != null && callbackHandler != null
 384                                 // && line.startsWith(sudoPrompt)) {
 385                                 // try {
 386                                 // PasswordCallback pc = new PasswordCallback(
 387                                 // "sudo password", false);
 388                                 // Callback[] cbs = { pc };
 389                                 // callbackHandler.handle(cbs);
 390                                 // char[] pwd = pc.getPassword();
 391                                 // char[] arr = Arrays.copyOf(pwd,
 392                                 // pwd.length + 1);
 393                                 // arr[arr.length - 1] = '\n';
 394                                 // IOUtils.write(arr, stdInSink);
 395                                 // stdInSink.flush();
 396                                 // } catch (Exception e) {
 397                                 // throw new SlcException(
 398                                 // "Cannot retrieve sudo password", e);
 399                                 // }
 400                                 // }
 401                                 // firstLine = false;
 402                                 // }
 403
 404                                 if (line != null && !line.trim().equals(""))
 405                                         logStdOut(line);
 406
 407                                 if (stdOutWriter != null)
 408                                         appendLineToFile(stdOutWriter, line);
 409                         }
 410                 };
 411
 412                 OutputStream stderr = new LogOutputStream() {
 413                         protected void processLine(String line, int level) {
 414                                 if (line != null && !line.trim().equals(""))
 415                                         logStdErr(line);
 416                                 if (stdErrWriter != null)
 417                                         appendLineToFile(stdErrWriter, line);
 418                         }
 419                 };
 420
 421                 PumpStreamHandler pumpStreamHandler = new PumpStreamHandler(stdout, stderr, stdInStream) {
 422
 423                         @Override
 424                         public void stop() throws IOException {
 425                                 // prevents the method to block when joining stdin
 426                                 if (stdInSink != null)
 427                                         IOUtils.closeQuietly(stdInSink);
 428
 429                                 super.stop();
 430                         }
 431                 };
 432                 return pumpStreamHandler;
 433         }
 434
 435         /** Creates the default {@link ExecuteResultHandler}. */
 436         protected ExecuteResultHandler createExecuteResultHandler(final CommandLine commandLine) {
 437                 return new ExecuteResultHandler() {
 438
 439                         public void onProcessComplete(int exitValue) {
 440                                 String msg = "System call '" + commandLine + "' properly completed.";
 441                                 if (log.isTraceEnabled())
 442                                         log.trace(msg);
 443                                 if (testResult != null) {
 444                                         forwardPath(testResult);
 445                                         testResult.addResultPart(new SimpleResultPart(TestStatus.PASSED, msg));
 446                                 }
 447                                 releaseWatchdog();
 448                         }
 449
 450                         public void onProcessFailed(ExecuteException e) {
 451
 452                                 String msg = "System call '" + commandLine + "' failed.";
 453                                 if (testResult != null) {
 454                                         forwardPath(testResult);
 455                                         testResult.addResultPart(new SimpleResultPart(TestStatus.ERROR, msg, e));
 456                                 } else {
 457                                         if (exceptionOnFailed)
 458                                                 throw new SlcException(msg, e);
 459                                         else
 460                                                 log.error(msg, e);
 461                                 }
 462                                 releaseWatchdog();
 463                         }
 464                 };
 465         }
 466
 467         @Deprecated
 468         protected void forwardPath(TestResult testResult) {
 469                 // TODO: allocate a TreeSPath
 470         }
 471
 472         /**
 473          * Shortcut method getting the execDir to use
 474          */
 475         protected String getExecDirToUse() {
 476                 try {
 477                         if (execDir != null) {
 478                                 return execDir;
 479                         }
 480                         return System.getProperty("user.dir");
 481                 } catch (Exception e) {
 482                         throw new SlcException("Cannot find exec dir", e);
 483                 }
 484         }
 485
 486         protected void logStdOut(String line) {
 487                 for (SystemCallOutputListener outputListener : outputListeners)
 488                         outputListener.newLine(this, line, false);
 489                 log(stdOutLogLevel, line);
 490         }
 491
 492         protected void logStdErr(String line) {
 493                 for (SystemCallOutputListener outputListener : outputListeners)
 494                         outputListener.newLine(this, line, true);
 495                 log(stdErrLogLevel, line);
 496         }
 497
 498         /** Log from the underlying streams. */
 499         protected void log(String logLevel, String line) {
 500                 // TODO optimize
 501 //              if (SecurityContextHolder.getContext().getAuthentication() == null) {
 502 //                      SecurityContextHolder.getContext()
 503 //                                      .setAuthentication(authentication);
 504 //              }
 505
 506                 if ("ERROR".equals(logLevel))
 507                         log.error(line);
 508                 else if ("WARN".equals(logLevel))
 509                         log.warn(line);
 510                 else if ("INFO".equals(logLevel))
 511                         log.info(line);
 512                 else if ("DEBUG".equals(logLevel))
 513                         log.debug(line);
 514                 else if ("TRACE".equals(logLevel))
 515                         log.trace(line);
 516                 else if (LOG_STDOUT.equals(logLevel))
 517                         System.out.println(line);
 518                 else if ("System.err".equals(logLevel))
 519                         System.err.println(line);
 520                 else
 521                         throw new SlcException("Unknown log level " + logLevel);
 522         }
 523
 524         /** Append line to a log file. */
 525         protected void appendLineToFile(Writer writer, String line) {
 526                 try {
 527                         writer.append(line).append('\n');
 528                 } catch (IOException e) {
 529                         log.error("Cannot write to log file", e);
 530                 }
 531         }
 532
 533         /** Creates the writer for the output/err files. */
 534         protected Writer createWriter(Path target, Boolean append) {
 535                 FileWriter writer = null;
 536                 try {
 537
 538                         final File file;
 539                         if (executionResources != null)
 540                                 file = new File(executionResources.getAsOsPath(target, true));
 541                         else
 542                                 file = target.toFile();
 543                         writer = new FileWriter(file, append);
 544                 } catch (IOException e) {
 545                         log.error("Cannot get file for " + target, e);
 546                         IOUtils.closeQuietly(writer);
 547                 }
 548                 return writer;
 549         }
 550
 551         /** Creates an outputstream for the output/err files. */
 552         protected OutputStream createOutputStream(Path target) {
 553                 FileOutputStream out = null;
 554                 try {
 555
 556                         final File file;
 557                         if (executionResources != null)
 558                                 file = new File(executionResources.getAsOsPath(target, true));
 559                         else
 560                                 file = target.toFile();
 561                         out = new FileOutputStream(file, false);
 562                 } catch (IOException e) {
 563                         log.error("Cannot get file for " + target, e);
 564                         IOUtils.closeQuietly(out);
 565                 }
 566                 return out;
 567         }
 568
 569         /** Append the argument (for chaining) */
 570         public SystemCall arg(String arg) {
 571                 if (command == null)
 572                         command = new ArrayList<Object>();
 573                 command.add(arg);
 574                 return this;
 575         }
 576
 577         /** Append the argument (for chaining) */
 578         public SystemCall arg(String arg, String value) {
 579                 if (command == null)
 580                         command = new ArrayList<Object>();
 581                 command.add(arg);
 582                 command.add(value);
 583                 return this;
 584         }
 585
 586         // CONTROL
 587         public synchronized Boolean isRunning() {
 588                 return currentWatchdog != null;
 589         }
 590
 591         private synchronized ExecuteWatchdog createWatchdog() {
 592 //              if (currentWatchdog != null)
 593 //                      throw new SlcException("A process is already being monitored");
 594                 currentWatchdog = new ExecuteWatchdog(watchdogTimeout);
 595                 return currentWatchdog;
 596         }
 597
 598         private synchronized void releaseWatchdog() {
 599                 currentWatchdog = null;
 600         }
 601
 602         public synchronized void kill() {
 603                 if (currentWatchdog != null)
 604                         currentWatchdog.destroyProcess();
 605         }
 606
 607         /** */
 608         public void setCmd(String command) {
 609                 this.cmd = command;
 610         }
 611
 612         public void setCommand(List<Object> command) {
 613                 this.command = command;
 614         }
 615
 616         public void setExecDir(String execdir) {
 617                 this.execDir = execdir;
 618         }
 619
 620         public void setStdErrLogLevel(String stdErrLogLevel) {
 621                 this.stdErrLogLevel = stdErrLogLevel;
 622         }
 623
 624         public void setStdOutLogLevel(String stdOutLogLevel) {
 625                 this.stdOutLogLevel = stdOutLogLevel;
 626         }
 627
 628         public void setSynchronous(Boolean synchronous) {
 629                 this.synchronous = synchronous;
 630         }
 631
 632         public void setOsCommands(Map<String, List<Object>> osCommands) {
 633                 this.osCommands = osCommands;
 634         }
 635
 636         public void setOsCmds(Map<String, String> osCmds) {
 637                 this.osCmds = osCmds;
 638         }
 639
 640         public void setEnvironmentVariables(Map<String, String> environmentVariables) {
 641                 this.environmentVariables = environmentVariables;
 642         }
 643
 644         public Map<String, String> getEnvironmentVariables() {
 645                 return environmentVariables;
 646         }
 647
 648         public void setWatchdogTimeout(Long watchdogTimeout) {
 649                 this.watchdogTimeout = watchdogTimeout;
 650         }
 651
 652         public void setStdOutFile(Path stdOutFile) {
 653                 this.stdOutFile = stdOutFile;
 654         }
 655
 656         public void setStdErrFile(Path stdErrFile) {
 657                 this.stdErrFile = stdErrFile;
 658         }
 659
 660         public void setStdInFile(Path stdInFile) {
 661                 this.stdInFile = stdInFile;
 662         }
 663
 664         public void setTestResult(TestResult testResult) {
 665                 this.testResult = testResult;
 666         }
 667
 668         public void setLogCommand(Boolean logCommand) {
 669                 this.logCommand = logCommand;
 670         }
 671
 672         public void setRedirectStreams(Boolean redirectStreams) {
 673                 this.redirectStreams = redirectStreams;
 674         }
 675
 676         public void setExceptionOnFailed(Boolean exceptionOnFailed) {
 677                 this.exceptionOnFailed = exceptionOnFailed;
 678         }
 679
 680         public void setMergeEnvironmentVariables(Boolean mergeEnvironmentVariables) {
 681                 this.mergeEnvironmentVariables = mergeEnvironmentVariables;
 682         }
 683
 684         public void setOsConsole(String osConsole) {
 685                 this.osConsole = osConsole;
 686         }
 687
 688         public void setGenerateScript(String generateScript) {
 689                 this.generateScript = generateScript;
 690         }
 691
 692         public void setExecutionResources(ExecutionResources executionResources) {
 693                 this.executionResources = executionResources;
 694         }
 695
 696         public void setRedirectStdOut(Boolean redirectStdOut) {
 697                 this.redirectStdOut = redirectStdOut;
 698         }
 699
 700         public void addOutputListener(SystemCallOutputListener outputListener) {
 701                 outputListeners.add(outputListener);
 702         }
 703
 704         public void removeOutputListener(SystemCallOutputListener outputListener) {
 705                 outputListeners.remove(outputListener);
 706         }
 707
 708         public void setOutputListeners(List<SystemCallOutputListener> outputListeners) {
 709                 this.outputListeners = outputListeners;
 710         }
 711
 712         public void setExecutor(Executor executor) {
 713                 this.executor = executor;
 714         }
 715
 716         public void setSudo(String sudo) {
 717                 this.sudo = sudo;
 718         }
 719
 720         public void setCallbackHandler(CallbackHandler callbackHandler) {
 721                 this.callbackHandler = callbackHandler;
 722         }
 723
 724         public void setChroot(String chroot) {
 725                 this.chroot = chroot;
 726         }
 727
 728         private class DummyexecuteStreamHandler implements ExecuteStreamHandler {
 729
 730                 public void setProcessErrorStream(InputStream is) throws IOException {
 731                 }
 732
 733                 public void setProcessInputStream(OutputStream os) throws IOException {
 734                 }
 735
 736                 public void setProcessOutputStream(InputStream is) throws IOException {
 737                 }
 738
 739                 public void start() throws IOException {
 740                 }
 741
 742                 public void stop() {
 743                 }
 744
 745         }
 746 }