runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/tasks/SystemCall.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.core.execution.tasks;
  17
  18 import java.io.File;
  19 import java.io.FileOutputStream;
  20 import java.io.FileWriter;
  21 import java.io.IOException;
  22 import java.io.InputStream;
  23 import java.io.OutputStream;
  24 import java.io.PipedInputStream;
  25 import java.io.PipedOutputStream;
  26 import java.io.Writer;
  27 import java.util.ArrayList;
  28 import java.util.Collections;
  29 import java.util.HashMap;
  30 import java.util.List;
  31 import java.util.Map;
  32 import java.util.UUID;
  33
  34 import javax.security.auth.callback.CallbackHandler;
  35
  36 import org.apache.commons.exec.CommandLine;
  37 import org.apache.commons.exec.DefaultExecutor;
  38 import org.apache.commons.exec.ExecuteException;
  39 import org.apache.commons.exec.ExecuteResultHandler;
  40 import org.apache.commons.exec.ExecuteStreamHandler;
  41 import org.apache.commons.exec.ExecuteWatchdog;
  42 import org.apache.commons.exec.Executor;
  43 import org.apache.commons.exec.LogOutputStream;
  44 import org.apache.commons.exec.PumpStreamHandler;
  45 import org.apache.commons.exec.ShutdownHookProcessDestroyer;
  46 import org.apache.commons.io.FileUtils;
  47 import org.apache.commons.io.IOUtils;
  48 import org.apache.commons.logging.Log;
  49 import org.apache.commons.logging.LogFactory;
  50 import org.argeo.slc.SlcException;
  51 import org.argeo.slc.UnsupportedException;
  52 import org.argeo.slc.core.execution.ExecutionResources;
  53 import org.argeo.slc.core.test.SimpleResultPart;
  54 import org.argeo.slc.test.TestResult;
  55 import org.argeo.slc.test.TestStatus;
  56 import org.springframework.core.io.Resource;
  57 import org.springframework.security.Authentication;
  58 import org.springframework.security.context.SecurityContextHolder;
  59
  60 /** Execute an OS specific system call. */
  61 public class SystemCall implements Runnable {
  62         public final static String LOG_STDOUT = "System.out";
  63
  64         private final Log log = LogFactory.getLog(getClass());
  65
  66         private String execDir;
  67
  68         private String cmd = null;
  69         private List<Object> command = null;
  70
  71         private Executor executor = new DefaultExecutor();
  72         private Boolean synchronous = true;
  73
  74         private String stdErrLogLevel = "ERROR";
  75         private String stdOutLogLevel = "INFO";
  76
  77         private Resource stdOutFile = null;
  78         private Resource stdErrFile = null;
  79
  80         private Resource stdInFile = null;
  81         /**
  82          * If no {@link #stdInFile} provided, writing to this stream will write to
  83          * the stdin of the process.
  84          */
  85         private OutputStream stdInSink = null;
  86
  87         private Boolean redirectStdOut = false;
  88
  89         private List<SystemCallOutputListener> outputListeners = Collections
  90                         .synchronizedList(new ArrayList<SystemCallOutputListener>());
  91
  92         private Map<String, List<Object>> osCommands = new HashMap<String, List<Object>>();
  93         private Map<String, String> osCmds = new HashMap<String, String>();
  94         private Map<String, String> environmentVariables = new HashMap<String, String>();
  95
  96         private Boolean logCommand = false;
  97         private Boolean redirectStreams = true;
  98         private Boolean exceptionOnFailed = true;
  99         private Boolean mergeEnvironmentVariables = true;
 100
 101         private Authentication authentication;
 102
 103         private String osConsole = null;
 104         private String generateScript = null;
 105
 106         /** 24 hours */
 107         private Long watchdogTimeout = 24 * 60 * 60 * 1000l;
 108
 109         private TestResult testResult;
 110
 111         private ExecutionResources executionResources;
 112
 113         /** Sudo the command, as root if empty or as user if not. */
 114         private String sudo = null;
 115         // TODO make it more secure and robust, test only once
 116         private final String sudoPrompt = UUID.randomUUID().toString();
 117         private String askPassProgram = "/usr/libexec/openssh/ssh-askpass";
 118         private boolean firstLine = true;
 119         private CallbackHandler callbackHandler;
 120         /** Chroot to the this path (must not be empty) */
 121         private String chroot = null;
 122
 123         /** Empty constructor */
 124         public SystemCall() {
 125
 126         }
 127
 128         /**
 129          * Constructor based on the provided command list.
 130          *
 131          * @param command
 132          *            the command list
 133          */
 134         public SystemCall(List<Object> command) {
 135                 this.command = command;
 136         }
 137
 138         /**
 139          * Constructor based on the provided command.
 140          *
 141          * @param cmd
 142          *            the command. If the provided string contains no space a
 143          *            command list is initialized with the argument as first
 144          *            component (useful for chained construction)
 145          */
 146         public SystemCall(String cmd) {
 147                 if (cmd.indexOf(' ') < 0) {
 148                         command = new ArrayList<Object>();
 149                         command.add(cmd);
 150                 } else {
 151                         this.cmd = cmd;
 152                 }
 153         }
 154
 155         /** Executes the system call. */
 156         public void run() {
 157                 authentication = SecurityContextHolder.getContext().getAuthentication();
 158
 159                 // Manage streams
 160                 Writer stdOutWriter = null;
 161                 OutputStream stdOutputStream = null;
 162                 Writer stdErrWriter = null;
 163                 InputStream stdInStream = null;
 164                 if (stdOutFile != null)
 165                         if (redirectStdOut)
 166                                 stdOutputStream = createOutputStream(stdOutFile);
 167                         else
 168                                 stdOutWriter = createWriter(stdOutFile, true);
 169
 170                 if (stdErrFile != null) {
 171                         stdErrWriter = createWriter(stdErrFile, true);
 172                 } else {
 173                         if (stdOutFile != null && !redirectStdOut)
 174                                 stdErrWriter = createWriter(stdOutFile, true);
 175                 }
 176
 177                 try {
 178                         if (stdInFile != null)
 179                                 stdInStream = stdInFile.getInputStream();
 180                         else {
 181                                 stdInStream = new PipedInputStream();
 182                                 stdInSink = new PipedOutputStream(
 183                                                 (PipedInputStream) stdInStream);
 184                         }
 185                 } catch (IOException e2) {
 186                         throw new SlcException("Cannot open a stream for " + stdInFile, e2);
 187                 }
 188
 189                 if (log.isTraceEnabled()) {
 190                         log.debug("os.name=" + System.getProperty("os.name"));
 191                         log.debug("os.arch=" + System.getProperty("os.arch"));
 192                         log.debug("os.version=" + System.getProperty("os.version"));
 193                 }
 194
 195                 // Execution directory
 196                 File dir = new File(getExecDirToUse());
 197                 // if (!dir.exists())
 198                 // dir.mkdirs();
 199
 200                 // Watchdog to check for lost processes
 201                 Executor executorToUse;
 202                 if (executor != null)
 203                         executorToUse = executor;
 204                 else
 205                         executorToUse = new DefaultExecutor();
 206                 executorToUse.setWatchdog(new ExecuteWatchdog(watchdogTimeout));
 207
 208                 if (redirectStreams) {
 209                         // Redirect standard streams
 210                         executorToUse.setStreamHandler(createExecuteStreamHandler(
 211                                         stdOutWriter, stdOutputStream, stdErrWriter, stdInStream));
 212                 } else {
 213                         // Dummy stream handler (otherwise pump is used)
 214                         executorToUse.setStreamHandler(new DummyexecuteStreamHandler());
 215                 }
 216
 217                 executorToUse.setProcessDestroyer(new ShutdownHookProcessDestroyer());
 218                 executorToUse.setWorkingDirectory(dir);
 219
 220                 // Command line to use
 221                 final CommandLine commandLine = createCommandLine();
 222                 if (logCommand)
 223                         log.info("Execute command:\n" + commandLine
 224                                         + "\n in working directory: \n" + dir + "\n");
 225
 226                 // Env variables
 227                 Map<String, String> environmentVariablesToUse = null;
 228                 environmentVariablesToUse = new HashMap<String, String>();
 229                 if (mergeEnvironmentVariables)
 230                         environmentVariablesToUse.putAll(System.getenv());
 231                 if (environmentVariables.size() > 0)
 232                         environmentVariablesToUse.putAll(environmentVariables);
 233
 234                 // Execute
 235                 ExecuteResultHandler executeResultHandler = createExecuteResultHandler(commandLine);
 236
 237                 //
 238                 // THE EXECUTION PROPER
 239                 //
 240                 try {
 241                         if (synchronous)
 242                                 try {
 243                                         int exitValue = executorToUse.execute(commandLine,
 244                                                         environmentVariablesToUse);
 245                                         executeResultHandler.onProcessComplete(exitValue);
 246                                 } catch (ExecuteException e1) {
 247                                         if (e1.getExitValue() == Executor.INVALID_EXITVALUE) {
 248                                                 Thread.currentThread().interrupt();
 249                                                 return;
 250                                         }
 251                                         // Sleep 1s in order to make sure error logs are flushed
 252                                         Thread.sleep(1000);
 253                                         executeResultHandler.onProcessFailed(e1);
 254                                 }
 255                         else
 256                                 executorToUse.execute(commandLine, environmentVariablesToUse,
 257                                                 executeResultHandler);
 258                 } catch (SlcException e) {
 259                         throw e;
 260                 } catch (Exception e) {
 261                         throw new SlcException("Could not execute command " + commandLine,
 262                                         e);
 263                 } finally {
 264                         IOUtils.closeQuietly(stdOutWriter);
 265                         IOUtils.closeQuietly(stdErrWriter);
 266                         IOUtils.closeQuietly(stdInStream);
 267                         IOUtils.closeQuietly(stdInSink);
 268                 }
 269
 270         }
 271
 272         public synchronized String function() {
 273                 final StringBuffer buf = new StringBuffer("");
 274                 SystemCallOutputListener tempOutputListener = new SystemCallOutputListener() {
 275                         private Long lineCount = 0l;
 276
 277                         public void newLine(SystemCall systemCall, String line,
 278                                         Boolean isError) {
 279                                 if (!isError) {
 280                                         if (lineCount != 0l)
 281                                                 buf.append('\n');
 282                                         buf.append(line);
 283                                         lineCount++;
 284                                 }
 285                         }
 286                 };
 287                 addOutputListener(tempOutputListener);
 288                 run();
 289                 removeOutputListener(tempOutputListener);
 290                 return buf.toString();
 291         }
 292
 293         public String asCommand() {
 294                 return createCommandLine().toString();
 295         }
 296
 297         @Override
 298         public String toString() {
 299                 return asCommand();
 300         }
 301
 302         /**
 303          * Build a command line based on the properties. Can be overridden by
 304          * specific command wrappers.
 305          */
 306         protected CommandLine createCommandLine() {
 307                 // Check if an OS specific command overrides
 308                 String osName = System.getProperty("os.name");
 309                 List<Object> commandToUse = null;
 310                 if (osCommands.containsKey(osName))
 311                         commandToUse = osCommands.get(osName);
 312                 else
 313                         commandToUse = command;
 314                 String cmdToUse = null;
 315                 if (osCmds.containsKey(osName))
 316                         cmdToUse = osCmds.get(osName);
 317                 else
 318                         cmdToUse = cmd;
 319
 320                 CommandLine commandLine = null;
 321
 322                 // Which command definition to use
 323                 if (commandToUse == null && cmdToUse == null)
 324                         throw new SlcException("Please specify a command.");
 325                 else if (commandToUse != null && cmdToUse != null)
 326                         throw new SlcException(
 327                                         "Specify the command either as a line or as a list.");
 328                 else if (cmdToUse != null) {
 329                         if (chroot != null && !chroot.trim().equals(""))
 330                                 cmdToUse = "chroot \"" + chroot + "\" " + cmdToUse;
 331                         if (sudo != null) {
 332                                 environmentVariables.put("SUDO_ASKPASS", askPassProgram);
 333                                 if (!sudo.trim().equals(""))
 334                                         cmdToUse = "sudo -p " + sudoPrompt + " -u " + sudo + " "
 335                                                         + cmdToUse;
 336                                 else
 337                                         cmdToUse = "sudo -p " + sudoPrompt + " " + cmdToUse;
 338                         }
 339
 340                         // GENERATE COMMAND LINE
 341                         commandLine = CommandLine.parse(cmdToUse);
 342                 } else if (commandToUse != null) {
 343                         if (commandToUse.size() == 0)
 344                                 throw new SlcException("Command line is empty.");
 345
 346                         if (chroot != null && sudo != null) {
 347                                 commandToUse.add(0, "chroot");
 348                                 commandToUse.add(1, chroot);
 349                         }
 350
 351                         if (sudo != null) {
 352                                 environmentVariables.put("SUDO_ASKPASS", askPassProgram);
 353                                 commandToUse.add(0, "sudo");
 354                                 commandToUse.add(1, "-p");
 355                                 commandToUse.add(2, sudoPrompt);
 356                                 if (!sudo.trim().equals("")) {
 357                                         commandToUse.add(3, "-u");
 358                                         commandToUse.add(4, sudo);
 359                                 }
 360                         }
 361
 362                         // GENERATE COMMAND LINE
 363                         commandLine = new CommandLine(commandToUse.get(0).toString());
 364
 365                         for (int i = 1; i < commandToUse.size(); i++) {
 366                                 if (log.isTraceEnabled())
 367                                         log.debug(commandToUse.get(i));
 368                                 commandLine.addArgument(commandToUse.get(i).toString());
 369                         }
 370                 } else {
 371                         // all cases covered previously
 372                         throw new UnsupportedException();
 373                 }
 374
 375                 if (generateScript != null) {
 376                         File scriptFile = new File(getExecDirToUse() + File.separator
 377                                         + generateScript);
 378                         try {
 379                                 FileUtils.writeStringToFile(scriptFile,
 380                                                 (osConsole != null ? osConsole + " " : "")
 381                                                                 + commandLine.toString());
 382                         } catch (IOException e) {
 383                                 throw new SlcException("Could not generate script "
 384                                                 + scriptFile, e);
 385                         }
 386                         commandLine = new CommandLine(scriptFile);
 387                 } else {
 388                         if (osConsole != null)
 389                                 commandLine = CommandLine.parse(osConsole + " "
 390                                                 + commandLine.toString());
 391                 }
 392
 393                 return commandLine;
 394         }
 395
 396         /**
 397          * Creates a {@link PumpStreamHandler} which redirects streams to the custom
 398          * logging mechanism.
 399          */
 400         protected ExecuteStreamHandler createExecuteStreamHandler(
 401                         final Writer stdOutWriter, final OutputStream stdOutputStream,
 402                         final Writer stdErrWriter, final InputStream stdInStream) {
 403
 404                 // Log writers
 405                 OutputStream stdout = stdOutputStream != null ? stdOutputStream
 406                                 : new LogOutputStream() {
 407                                         protected void processLine(String line, int level) {
 408                                                 // if (firstLine) {
 409                                                 // if (sudo != null && callbackHandler != null
 410                                                 // && line.startsWith(sudoPrompt)) {
 411                                                 // try {
 412                                                 // PasswordCallback pc = new PasswordCallback(
 413                                                 // "sudo password", false);
 414                                                 // Callback[] cbs = { pc };
 415                                                 // callbackHandler.handle(cbs);
 416                                                 // char[] pwd = pc.getPassword();
 417                                                 // char[] arr = Arrays.copyOf(pwd,
 418                                                 // pwd.length + 1);
 419                                                 // arr[arr.length - 1] = '\n';
 420                                                 // IOUtils.write(arr, stdInSink);
 421                                                 // stdInSink.flush();
 422                                                 // } catch (Exception e) {
 423                                                 // throw new SlcException(
 424                                                 // "Cannot retrieve sudo password", e);
 425                                                 // }
 426                                                 // }
 427                                                 // firstLine = false;
 428                                                 // }
 429
 430                                                 if (line != null && !line.trim().equals(""))
 431                                                         logStdOut(line);
 432
 433                                                 if (stdOutWriter != null)
 434                                                         appendLineToFile(stdOutWriter, line);
 435                                         }
 436                                 };
 437
 438                 OutputStream stderr = new LogOutputStream() {
 439                         protected void processLine(String line, int level) {
 440                                 if (line != null && !line.trim().equals(""))
 441                                         logStdErr(line);
 442                                 if (stdErrWriter != null)
 443                                         appendLineToFile(stdErrWriter, line);
 444                         }
 445                 };
 446
 447                 PumpStreamHandler pumpStreamHandler = new PumpStreamHandler(stdout,
 448                                 stderr, stdInStream) {
 449
 450                         @Override
 451                         public void stop() {
 452                                 // prevents the method to block when joining stdin
 453                                 if (stdInSink != null)
 454                                         IOUtils.closeQuietly(stdInSink);
 455
 456                                 super.stop();
 457                         }
 458                 };
 459                 return pumpStreamHandler;
 460         }
 461
 462         /** Creates the default {@link ExecuteResultHandler}. */
 463         protected ExecuteResultHandler createExecuteResultHandler(
 464                         final CommandLine commandLine) {
 465                 return new ExecuteResultHandler() {
 466
 467                         public void onProcessComplete(int exitValue) {
 468                                 String msg = "System call '" + commandLine
 469                                                 + "' properly completed.";
 470                                 if (log.isTraceEnabled())
 471                                         log.trace(msg);
 472                                 if (testResult != null) {
 473                                         forwardPath(testResult);
 474                                         testResult.addResultPart(new SimpleResultPart(
 475                                                         TestStatus.PASSED, msg));
 476                                 }
 477                         }
 478
 479                         public void onProcessFailed(ExecuteException e) {
 480
 481                                 String msg = "System call '" + commandLine + "' failed.";
 482                                 if (testResult != null) {
 483                                         forwardPath(testResult);
 484                                         testResult.addResultPart(new SimpleResultPart(
 485                                                         TestStatus.ERROR, msg, e));
 486                                 } else {
 487                                         if (exceptionOnFailed)
 488                                                 throw new SlcException(msg, e);
 489                                         else
 490                                                 log.error(msg, e);
 491                                 }
 492                         }
 493                 };
 494         }
 495
 496         @Deprecated
 497         protected void forwardPath(TestResult testResult) {
 498                 // TODO: allocate a TreeSPath
 499         }
 500
 501         /**
 502          * Shortcut method getting the execDir to use
 503          */
 504         protected String getExecDirToUse() {
 505                 try {
 506                         if (execDir != null) {
 507                                 return execDir;
 508                         }
 509                         return System.getProperty("user.dir");
 510                 } catch (Exception e) {
 511                         throw new SlcException("Cannot find exec dir", e);
 512                 }
 513         }
 514
 515         protected void logStdOut(String line) {
 516                 for (SystemCallOutputListener outputListener : outputListeners)
 517                         outputListener.newLine(this, line, false);
 518                 log(stdOutLogLevel, line);
 519         }
 520
 521         protected void logStdErr(String line) {
 522                 for (SystemCallOutputListener outputListener : outputListeners)
 523                         outputListener.newLine(this, line, true);
 524                 log(stdErrLogLevel, line);
 525         }
 526
 527         /** Log from the underlying streams. */
 528         protected void log(String logLevel, String line) {
 529                 // TODO optimize
 530                 if (SecurityContextHolder.getContext().getAuthentication() == null) {
 531                         SecurityContextHolder.getContext()
 532                                         .setAuthentication(authentication);
 533                 }
 534
 535                 if ("ERROR".equals(logLevel))
 536                         log.error(line);
 537                 else if ("WARN".equals(logLevel))
 538                         log.warn(line);
 539                 else if ("INFO".equals(logLevel))
 540                         log.info(line);
 541                 else if ("DEBUG".equals(logLevel))
 542                         log.debug(line);
 543                 else if ("TRACE".equals(logLevel))
 544                         log.trace(line);
 545                 else if (LOG_STDOUT.equals(logLevel))
 546                         System.out.println(line);
 547                 else if ("System.err".equals(logLevel))
 548                         System.err.println(line);
 549                 else
 550                         throw new SlcException("Unknown log level " + logLevel);
 551         }
 552
 553         /** Append line to a log file. */
 554         protected void appendLineToFile(Writer writer, String line) {
 555                 try {
 556                         writer.append(line).append('\n');
 557                 } catch (IOException e) {
 558                         log.error("Cannot write to log file", e);
 559                 }
 560         }
 561
 562         /** Creates the writer for the output/err files. */
 563         protected Writer createWriter(Resource target, Boolean append) {
 564                 FileWriter writer = null;
 565                 try {
 566
 567                         final File file;
 568                         if (executionResources != null)
 569                                 file = new File(executionResources.getAsOsPath(target, true));
 570                         else
 571                                 file = target.getFile();
 572                         writer = new FileWriter(file, append);
 573                 } catch (IOException e) {
 574                         log.error("Cannot get file for " + target, e);
 575                         IOUtils.closeQuietly(writer);
 576                 }
 577                 return writer;
 578         }
 579
 580         /** Creates an outputstream for the output/err files. */
 581         protected OutputStream createOutputStream(Resource target) {
 582                 FileOutputStream out = null;
 583                 try {
 584
 585                         final File file;
 586                         if (executionResources != null)
 587                                 file = new File(executionResources.getAsOsPath(target, true));
 588                         else
 589                                 file = target.getFile();
 590                         out = new FileOutputStream(file, false);
 591                 } catch (IOException e) {
 592                         log.error("Cannot get file for " + target, e);
 593                         IOUtils.closeQuietly(out);
 594                 }
 595                 return out;
 596         }
 597
 598         /** Append the argument (for chaining) */
 599         public SystemCall arg(String arg) {
 600                 if (command == null)
 601                         command = new ArrayList<Object>();
 602                 command.add(arg);
 603                 return this;
 604         }
 605
 606         /** Append the argument (for chaining) */
 607         public SystemCall arg(String arg, String value) {
 608                 if (command == null)
 609                         command = new ArrayList<Object>();
 610                 command.add(arg);
 611                 command.add(value);
 612                 return this;
 613         }
 614
 615         /** */
 616         public void setCmd(String command) {
 617                 this.cmd = command;
 618         }
 619
 620         public void setCommand(List<Object> command) {
 621                 this.command = command;
 622         }
 623
 624         public void setExecDir(String execdir) {
 625                 this.execDir = execdir;
 626         }
 627
 628         public void setStdErrLogLevel(String stdErrLogLevel) {
 629                 this.stdErrLogLevel = stdErrLogLevel;
 630         }
 631
 632         public void setStdOutLogLevel(String stdOutLogLevel) {
 633                 this.stdOutLogLevel = stdOutLogLevel;
 634         }
 635
 636         public void setSynchronous(Boolean synchronous) {
 637                 this.synchronous = synchronous;
 638         }
 639
 640         public void setOsCommands(Map<String, List<Object>> osCommands) {
 641                 this.osCommands = osCommands;
 642         }
 643
 644         public void setOsCmds(Map<String, String> osCmds) {
 645                 this.osCmds = osCmds;
 646         }
 647
 648         public void setEnvironmentVariables(Map<String, String> environmentVariables) {
 649                 this.environmentVariables = environmentVariables;
 650         }
 651
 652         public Map<String, String> getEnvironmentVariables() {
 653                 return environmentVariables;
 654         }
 655
 656         public void setWatchdogTimeout(Long watchdogTimeout) {
 657                 this.watchdogTimeout = watchdogTimeout;
 658         }
 659
 660         public void setStdOutFile(Resource stdOutFile) {
 661                 this.stdOutFile = stdOutFile;
 662         }
 663
 664         public void setStdErrFile(Resource stdErrFile) {
 665                 this.stdErrFile = stdErrFile;
 666         }
 667
 668         public void setStdInFile(Resource stdInFile) {
 669                 this.stdInFile = stdInFile;
 670         }
 671
 672         public void setTestResult(TestResult testResult) {
 673                 this.testResult = testResult;
 674         }
 675
 676         public void setLogCommand(Boolean logCommand) {
 677                 this.logCommand = logCommand;
 678         }
 679
 680         public void setRedirectStreams(Boolean redirectStreams) {
 681                 this.redirectStreams = redirectStreams;
 682         }
 683
 684         public void setExceptionOnFailed(Boolean exceptionOnFailed) {
 685                 this.exceptionOnFailed = exceptionOnFailed;
 686         }
 687
 688         public void setMergeEnvironmentVariables(Boolean mergeEnvironmentVariables) {
 689                 this.mergeEnvironmentVariables = mergeEnvironmentVariables;
 690         }
 691
 692         public void setOsConsole(String osConsole) {
 693                 this.osConsole = osConsole;
 694         }
 695
 696         public void setGenerateScript(String generateScript) {
 697                 this.generateScript = generateScript;
 698         }
 699
 700         public void setExecutionResources(ExecutionResources executionResources) {
 701                 this.executionResources = executionResources;
 702         }
 703
 704         public void setRedirectStdOut(Boolean redirectStdOut) {
 705                 this.redirectStdOut = redirectStdOut;
 706         }
 707
 708         public void addOutputListener(SystemCallOutputListener outputListener) {
 709                 outputListeners.add(outputListener);
 710         }
 711
 712         public void removeOutputListener(SystemCallOutputListener outputListener) {
 713                 outputListeners.remove(outputListener);
 714         }
 715
 716         public void setOutputListeners(
 717                         List<SystemCallOutputListener> outputListeners) {
 718                 this.outputListeners = outputListeners;
 719         }
 720
 721         public void setExecutor(Executor executor) {
 722                 this.executor = executor;
 723         }
 724
 725         public void setSudo(String sudo) {
 726                 this.sudo = sudo;
 727         }
 728
 729         public void setCallbackHandler(CallbackHandler callbackHandler) {
 730                 this.callbackHandler = callbackHandler;
 731         }
 732
 733         public void setChroot(String chroot) {
 734                 this.chroot = chroot;
 735         }
 736
 737         private class DummyexecuteStreamHandler implements ExecuteStreamHandler {
 738
 739                 public void setProcessErrorStream(InputStream is) throws IOException {
 740                 }
 741
 742                 public void setProcessInputStream(OutputStream os) throws IOException {
 743                 }
 744
 745                 public void setProcessOutputStream(InputStream is) throws IOException {
 746                 }
 747
 748                 public void start() throws IOException {
 749                 }
 750
 751                 public void stop() {
 752                 }
 753
 754         }
 755 }