Package CedarBackup2 :: Package tools :: Module span
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Source Code for Module CedarBackup2.tools.span

  1  # -*- coding: iso-8859-1 -*- 
  2  # vim: set ft=python ts=3 sw=3 expandtab: 
  3  # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # 
  4  # 
  5  #              C E D A R 
  6  #          S O L U T I O N S       "Software done right." 
  7  #           S O F T W A R E 
  8  # 
  9  # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # 
 10  # 
 11  # Copyright (c) 2007-2008,2010 Kenneth J. Pronovici. 
 12  # All rights reserved. 
 13  # 
 14  # This program is free software; you can redistribute it and/or 
 15  # modify it under the terms of the GNU General Public License, 
 16  # Version 2, as published by the Free Software Foundation. 
 17  # 
 18  # This program is distributed in the hope that it will be useful, 
 19  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
 20  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 21  # 
 22  # Copies of the GNU General Public License are available from 
 23  # the Free Software Foundation website, http://www.gnu.org/. 
 24  # 
 25  # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # 
 26  # 
 27  # Author   : Kenneth J. Pronovici <pronovic@ieee.org> 
 28  # Language : Python 2 (>= 2.7) 
 29  # Project  : Cedar Backup, release 2 
 30  # Purpose  : Spans staged data among multiple discs 
 31  # 
 32  # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # 
 33   
 34  ######################################################################## 
 35  # Notes 
 36  ######################################################################## 
 37   
 38  """ 
 39  Spans staged data among multiple discs 
 40   
 41  This is the Cedar Backup span tool.  It is intended for use by people who stage 
 42  more data than can fit on a single disc.  It allows a user to split staged data 
 43  among more than one disc.  It can't be an extension because it requires user 
 44  input when switching media. 
 45   
 46  Most configuration is taken from the Cedar Backup configuration file, 
 47  specifically the store section.  A few pieces of configuration are taken 
 48  directly from the user. 
 49   
 50  @author: Kenneth J. Pronovici <pronovic@ieee.org> 
 51  """ 
 52   
 53  ######################################################################## 
 54  # Imported modules and constants 
 55  ######################################################################## 
 56   
 57  # System modules 
 58  import sys 
 59  import os 
 60  import logging 
 61  import tempfile 
 62   
 63  # Cedar Backup modules 
 64  from CedarBackup2.release import AUTHOR, EMAIL, VERSION, DATE, COPYRIGHT 
 65  from CedarBackup2.util import displayBytes, convertSize, mount, unmount 
 66  from CedarBackup2.util import UNIT_SECTORS, UNIT_BYTES 
 67  from CedarBackup2.config import Config 
 68  from CedarBackup2.filesystem import BackupFileList, compareDigestMaps, normalizeDir 
 69  from CedarBackup2.cli import Options, setupLogging, setupPathResolver 
 70  from CedarBackup2.cli import DEFAULT_CONFIG, DEFAULT_LOGFILE, DEFAULT_OWNERSHIP, DEFAULT_MODE 
 71  from CedarBackup2.actions.constants import STORE_INDICATOR 
 72  from CedarBackup2.actions.util import createWriter 
 73  from CedarBackup2.actions.store import writeIndicatorFile 
 74  from CedarBackup2.actions.util import findDailyDirs 
 75  from CedarBackup2.util import Diagnostics 
 76   
 77   
 78  ######################################################################## 
 79  # Module-wide constants and variables 
 80  ######################################################################## 
 81   
 82  logger = logging.getLogger("CedarBackup2.log.tools.span") 
 83   
 84   
 85  ####################################################################### 
 86  # SpanOptions class 
 87  ####################################################################### 
 88   
89 -class SpanOptions(Options):
90 91 """ 92 Tool-specific command-line options. 93 94 Most of the cback command-line options are exactly what we need here -- 95 logfile path, permissions, verbosity, etc. However, we need to make a few 96 tweaks since we don't accept any actions. 97 98 Also, a few extra command line options that we accept are really ignored 99 underneath. I just don't care about that for a tool like this. 100 """ 101
102 - def validate(self):
103 """ 104 Validates command-line options represented by the object. 105 There are no validations here, because we don't use any actions. 106 @raise ValueError: If one of the validations fails. 107 """ 108 pass
109 110 111 ####################################################################### 112 # Public functions 113 ####################################################################### 114 115 ################# 116 # cli() function 117 ################# 118
119 -def cli():
120 """ 121 Implements the command-line interface for the C{cback-span} script. 122 123 Essentially, this is the "main routine" for the cback-span script. It does 124 all of the argument processing for the script, and then also implements the 125 tool functionality. 126 127 This function looks pretty similiar to C{CedarBackup2.cli.cli()}. It's not 128 easy to refactor this code to make it reusable and also readable, so I've 129 decided to just live with the duplication. 130 131 A different error code is returned for each type of failure: 132 133 - C{1}: The Python interpreter version is < 2.7 134 - C{2}: Error processing command-line arguments 135 - C{3}: Error configuring logging 136 - C{4}: Error parsing indicated configuration file 137 - C{5}: Backup was interrupted with a CTRL-C or similar 138 - C{6}: Error executing other parts of the script 139 140 @note: This script uses print rather than logging to the INFO level, because 141 it is interactive. Underlying Cedar Backup functionality uses the logging 142 mechanism exclusively. 143 144 @return: Error code as described above. 145 """ 146 try: 147 if map(int, [sys.version_info[0], sys.version_info[1]]) < [2, 7]: 148 sys.stderr.write("Python 2 version 2.7 or greater required.\n") 149 return 1 150 except: 151 # sys.version_info isn't available before 2.0 152 sys.stderr.write("Python 2 version 2.7 or greater required.\n") 153 return 1 154 155 try: 156 options = SpanOptions(argumentList=sys.argv[1:]) 157 except Exception, e: 158 _usage() 159 sys.stderr.write(" *** Error: %s\n" % e) 160 return 2 161 162 if options.help: 163 _usage() 164 return 0 165 if options.version: 166 _version() 167 return 0 168 if options.diagnostics: 169 _diagnostics() 170 return 0 171 172 if options.stacktrace: 173 logfile = setupLogging(options) 174 else: 175 try: 176 logfile = setupLogging(options) 177 except Exception as e: 178 sys.stderr.write("Error setting up logging: %s\n" % e) 179 return 3 180 181 logger.info("Cedar Backup 'span' utility run started.") 182 logger.info("Options were [%s]", options) 183 logger.info("Logfile is [%s]", logfile) 184 185 if options.config is None: 186 logger.debug("Using default configuration file.") 187 configPath = DEFAULT_CONFIG 188 else: 189 logger.debug("Using user-supplied configuration file.") 190 configPath = options.config 191 192 try: 193 logger.info("Configuration path is [%s]", configPath) 194 config = Config(xmlPath=configPath) 195 setupPathResolver(config) 196 except Exception, e: 197 logger.error("Error reading or handling configuration: %s", e) 198 logger.info("Cedar Backup 'span' utility run completed with status 4.") 199 return 4 200 201 if options.stacktrace: 202 _executeAction(options, config) 203 else: 204 try: 205 _executeAction(options, config) 206 except KeyboardInterrupt: 207 logger.error("Backup interrupted.") 208 logger.info("Cedar Backup 'span' utility run completed with status 5.") 209 return 5 210 except Exception, e: 211 logger.error("Error executing backup: %s", e) 212 logger.info("Cedar Backup 'span' utility run completed with status 6.") 213 return 6 214 215 logger.info("Cedar Backup 'span' utility run completed with status 0.") 216 return 0
217 218 219 ####################################################################### 220 # Utility functions 221 ####################################################################### 222 223 #################### 224 # _usage() function 225 #################### 226
227 -def _usage(fd=sys.stderr):
228 """ 229 Prints usage information for the cback script. 230 @param fd: File descriptor used to print information. 231 @note: The C{fd} is used rather than C{print} to facilitate unit testing. 232 """ 233 fd.write("\n") 234 fd.write(" Usage: cback-span [switches]\n") 235 fd.write("\n") 236 fd.write(" Cedar Backup 'span' tool.\n") 237 fd.write("\n") 238 fd.write(" This Cedar Backup utility spans staged data between multiple discs.\n") 239 fd.write(" It is a utility, not an extension, and requires user interaction.\n") 240 fd.write("\n") 241 fd.write(" The following switches are accepted, mostly to set up underlying\n") 242 fd.write(" Cedar Backup functionality:\n") 243 fd.write("\n") 244 fd.write(" -h, --help Display this usage/help listing\n") 245 fd.write(" -V, --version Display version information\n") 246 fd.write(" -b, --verbose Print verbose output as well as logging to disk\n") 247 fd.write(" -c, --config Path to config file (default: %s)\n" % DEFAULT_CONFIG) 248 fd.write(" -l, --logfile Path to logfile (default: %s)\n" % DEFAULT_LOGFILE) 249 fd.write(" -o, --owner Logfile ownership, user:group (default: %s:%s)\n" % (DEFAULT_OWNERSHIP[0], DEFAULT_OWNERSHIP[1])) 250 fd.write(" -m, --mode Octal logfile permissions mode (default: %o)\n" % DEFAULT_MODE) 251 fd.write(" -O, --output Record some sub-command (i.e. tar) output to the log\n") 252 fd.write(" -d, --debug Write debugging information to the log (implies --output)\n") 253 fd.write(" -s, --stack Dump a Python stack trace instead of swallowing exceptions\n") 254 fd.write("\n")
255 256 257 ###################### 258 # _version() function 259 ###################### 260
261 -def _version(fd=sys.stdout):
262 """ 263 Prints version information for the cback script. 264 @param fd: File descriptor used to print information. 265 @note: The C{fd} is used rather than C{print} to facilitate unit testing. 266 """ 267 fd.write("\n") 268 fd.write(" Cedar Backup 'span' tool.\n") 269 fd.write(" Included with Cedar Backup version %s, released %s.\n" % (VERSION, DATE)) 270 fd.write("\n") 271 fd.write(" Copyright (c) %s %s <%s>.\n" % (COPYRIGHT, AUTHOR, EMAIL)) 272 fd.write(" See CREDITS for a list of included code and other contributors.\n") 273 fd.write(" This is free software; there is NO warranty. See the\n") 274 fd.write(" GNU General Public License version 2 for copying conditions.\n") 275 fd.write("\n") 276 fd.write(" Use the --help option for usage information.\n") 277 fd.write("\n")
278 279 280 ########################## 281 # _diagnostics() function 282 ########################## 283
284 -def _diagnostics(fd=sys.stdout):
285 """ 286 Prints runtime diagnostics information. 287 @param fd: File descriptor used to print information. 288 @note: The C{fd} is used rather than C{print} to facilitate unit testing. 289 """ 290 fd.write("\n") 291 fd.write("Diagnostics:\n") 292 fd.write("\n") 293 Diagnostics().printDiagnostics(fd=fd, prefix=" ") 294 fd.write("\n")
295 296 297 ############################ 298 # _executeAction() function 299 ############################ 300
301 -def _executeAction(options, config):
302 """ 303 Implements the guts of the cback-span tool. 304 305 @param options: Program command-line options. 306 @type options: SpanOptions object. 307 308 @param config: Program configuration. 309 @type config: Config object. 310 311 @raise Exception: Under many generic error conditions 312 """ 313 print "" 314 print "================================================" 315 print " Cedar Backup 'span' tool" 316 print "================================================" 317 print "" 318 print "This the Cedar Backup span tool. It is used to split up staging" 319 print "data when that staging data does not fit onto a single disc." 320 print "" 321 print "This utility operates using Cedar Backup configuration. Configuration" 322 print "specifies which staging directory to look at and which writer device" 323 print "and media type to use." 324 print "" 325 if not _getYesNoAnswer("Continue?", default="Y"): 326 return 327 print "===" 328 329 print "" 330 print "Cedar Backup store configuration looks like this:" 331 print "" 332 print " Source Directory...: %s" % config.store.sourceDir 333 print " Media Type.........: %s" % config.store.mediaType 334 print " Device Type........: %s" % config.store.deviceType 335 print " Device Path........: %s" % config.store.devicePath 336 print " Device SCSI ID.....: %s" % config.store.deviceScsiId 337 print " Drive Speed........: %s" % config.store.driveSpeed 338 print " Check Data Flag....: %s" % config.store.checkData 339 print " No Eject Flag......: %s" % config.store.noEject 340 print "" 341 if not _getYesNoAnswer("Is this OK?", default="Y"): 342 return 343 print "===" 344 345 (writer, mediaCapacity) = _getWriter(config) 346 347 print "" 348 print "Please wait, indexing the source directory (this may take a while)..." 349 (dailyDirs, fileList) = _findDailyDirs(config.store.sourceDir) 350 print "===" 351 352 print "" 353 print "The following daily staging directories have not yet been written to disc:" 354 print "" 355 for dailyDir in dailyDirs: 356 print " %s" % dailyDir 357 358 totalSize = fileList.totalSize() 359 print "" 360 print "The total size of the data in these directories is %s." % displayBytes(totalSize) 361 print "" 362 if not _getYesNoAnswer("Continue?", default="Y"): 363 return 364 print "===" 365 366 print "" 367 print "Based on configuration, the capacity of your media is %s." % displayBytes(mediaCapacity) 368 369 print "" 370 print "Since estimates are not perfect and there is some uncertainly in" 371 print "media capacity calculations, it is good to have a \"cushion\"," 372 print "a percentage of capacity to set aside. The cushion reduces the" 373 print "capacity of your media, so a 1.5% cushion leaves 98.5% remaining." 374 print "" 375 cushion = _getFloat("What cushion percentage?", default=4.5) 376 print "===" 377 378 realCapacity = ((100.0 - cushion)/100.0) * mediaCapacity 379 minimumDiscs = (totalSize/realCapacity) + 1 380 print "" 381 print "The real capacity, taking into account the %.2f%% cushion, is %s." % (cushion, displayBytes(realCapacity)) 382 print "It will take at least %d disc(s) to store your %s of data." % (minimumDiscs, displayBytes(totalSize)) 383 print "" 384 if not _getYesNoAnswer("Continue?", default="Y"): 385 return 386 print "===" 387 388 happy = False 389 while not happy: 390 print "" 391 print "Which algorithm do you want to use to span your data across" 392 print "multiple discs?" 393 print "" 394 print "The following algorithms are available:" 395 print "" 396 print " first....: The \"first-fit\" algorithm" 397 print " best.....: The \"best-fit\" algorithm" 398 print " worst....: The \"worst-fit\" algorithm" 399 print " alternate: The \"alternate-fit\" algorithm" 400 print "" 401 print "If you don't like the results you will have a chance to try a" 402 print "different one later." 403 print "" 404 algorithm = _getChoiceAnswer("Which algorithm?", "worst", [ "first", "best", "worst", "alternate", ]) 405 print "===" 406 407 print "" 408 print "Please wait, generating file lists (this may take a while)..." 409 spanSet = fileList.generateSpan(capacity=realCapacity, algorithm="%s_fit" % algorithm) 410 print "===" 411 412 print "" 413 print "Using the \"%s-fit\" algorithm, Cedar Backup can split your data" % algorithm 414 print "into %d discs." % len(spanSet) 415 print "" 416 counter = 0 417 for item in spanSet: 418 counter += 1 419 print "Disc %d: %d files, %s, %.2f%% utilization" % (counter, len(item.fileList), 420 displayBytes(item.size), item.utilization) 421 print "" 422 if _getYesNoAnswer("Accept this solution?", default="Y"): 423 happy = True 424 print "===" 425 426 counter = 0 427 for spanItem in spanSet: 428 counter += 1 429 if counter == 1: 430 print "" 431 _getReturn("Please place the first disc in your backup device.\nPress return when ready.") 432 print "===" 433 else: 434 print "" 435 _getReturn("Please replace the disc in your backup device.\nPress return when ready.") 436 print "===" 437 _writeDisc(config, writer, spanItem) 438 439 _writeStoreIndicator(config, dailyDirs) 440 441 print "" 442 print "Completed writing all discs."
443 444 445 ############################ 446 # _findDailyDirs() function 447 ############################ 448
449 -def _findDailyDirs(stagingDir):
450 """ 451 Returns a list of all daily staging directories that have not yet been 452 stored. 453 454 The store indicator file C{cback.store} will be written to a daily staging 455 directory once that directory is written to disc. So, this function looks 456 at each daily staging directory within the configured staging directory, and 457 returns a list of those which do not contain the indicator file. 458 459 Returned is a tuple containing two items: a list of daily staging 460 directories, and a BackupFileList containing all files among those staging 461 directories. 462 463 @param stagingDir: Configured staging directory 464 465 @return: Tuple (staging dirs, backup file list) 466 """ 467 results = findDailyDirs(stagingDir, STORE_INDICATOR) 468 fileList = BackupFileList() 469 for item in results: 470 fileList.addDirContents(item) 471 return (results, fileList)
472 473 474 ################################## 475 # _writeStoreIndicator() function 476 ################################## 477
478 -def _writeStoreIndicator(config, dailyDirs):
479 """ 480 Writes a store indicator file into daily directories. 481 482 @param config: Config object. 483 @param dailyDirs: List of daily directories 484 """ 485 for dailyDir in dailyDirs: 486 writeIndicatorFile(dailyDir, STORE_INDICATOR, 487 config.options.backupUser, 488 config.options.backupGroup)
489 490 491 ######################## 492 # _getWriter() function 493 ######################## 494
495 -def _getWriter(config):
496 """ 497 Gets a writer and media capacity from store configuration. 498 Returned is a writer and a media capacity in bytes. 499 @param config: Cedar Backup configuration 500 @return: Tuple of (writer, mediaCapacity) 501 """ 502 writer = createWriter(config) 503 mediaCapacity = convertSize(writer.media.capacity, UNIT_SECTORS, UNIT_BYTES) 504 return (writer, mediaCapacity)
505 506 507 ######################## 508 # _writeDisc() function 509 ######################## 510
511 -def _writeDisc(config, writer, spanItem):
512 """ 513 Writes a span item to disc. 514 @param config: Cedar Backup configuration 515 @param writer: Writer to use 516 @param spanItem: Span item to write 517 """ 518 print "" 519 _discInitializeImage(config, writer, spanItem) 520 _discWriteImage(config, writer) 521 _discConsistencyCheck(config, writer, spanItem) 522 print "Write process is complete." 523 print "==="
524
525 -def _discInitializeImage(config, writer, spanItem):
526 """ 527 Initialize an ISO image for a span item. 528 @param config: Cedar Backup configuration 529 @param writer: Writer to use 530 @param spanItem: Span item to write 531 """ 532 complete = False 533 while not complete: 534 try: 535 print "Initializing image..." 536 writer.initializeImage(newDisc=True, tmpdir=config.options.workingDir) 537 for path in spanItem.fileList: 538 graftPoint = os.path.dirname(path.replace(config.store.sourceDir, "", 1)) 539 writer.addImageEntry(path, graftPoint) 540 complete = True 541 except KeyboardInterrupt, e: 542 raise e 543 except Exception, e: 544 logger.error("Failed to initialize image: %s", e) 545 if not _getYesNoAnswer("Retry initialization step?", default="Y"): 546 raise e 547 print "Ok, attempting retry." 548 print "===" 549 print "Completed initializing image."
550
551 -def _discWriteImage(config, writer):
552 """ 553 Writes a ISO image for a span item. 554 @param config: Cedar Backup configuration 555 @param writer: Writer to use 556 """ 557 complete = False 558 while not complete: 559 try: 560 print "Writing image to disc..." 561 writer.writeImage() 562 complete = True 563 except KeyboardInterrupt, e: 564 raise e 565 except Exception, e: 566 logger.error("Failed to write image: %s", e) 567 if not _getYesNoAnswer("Retry this step?", default="Y"): 568 raise e 569 print "Ok, attempting retry." 570 _getReturn("Please replace media if needed.\nPress return when ready.") 571 print "===" 572 print "Completed writing image."
573
574 -def _discConsistencyCheck(config, writer, spanItem):
575 """ 576 Run a consistency check on an ISO image for a span item. 577 @param config: Cedar Backup configuration 578 @param writer: Writer to use 579 @param spanItem: Span item to write 580 """ 581 if config.store.checkData: 582 complete = False 583 while not complete: 584 try: 585 print "Running consistency check..." 586 _consistencyCheck(config, spanItem.fileList) 587 complete = True 588 except KeyboardInterrupt, e: 589 raise e 590 except Exception, e: 591 logger.error("Consistency check failed: %s", e) 592 if not _getYesNoAnswer("Retry the consistency check?", default="Y"): 593 raise e 594 if _getYesNoAnswer("Rewrite the disc first?", default="N"): 595 print "Ok, attempting retry." 596 _getReturn("Please replace the disc in your backup device.\nPress return when ready.") 597 print "===" 598 _discWriteImage(config, writer) 599 else: 600 print "Ok, attempting retry." 601 print "===" 602 print "Completed consistency check."
603 604 605 ############################### 606 # _consistencyCheck() function 607 ############################### 608
609 -def _consistencyCheck(config, fileList):
610 """ 611 Runs a consistency check against media in the backup device. 612 613 The function mounts the device at a temporary mount point in the working 614 directory, and then compares the passed-in file list's digest map with the 615 one generated from the disc. The two lists should be identical. 616 617 If no exceptions are thrown, there were no problems with the consistency 618 check. 619 620 @warning: The implementation of this function is very UNIX-specific. 621 622 @param config: Config object. 623 @param fileList: BackupFileList whose contents to check against 624 625 @raise ValueError: If the check fails 626 @raise IOError: If there is a problem working with the media. 627 """ 628 logger.debug("Running consistency check.") 629 mountPoint = tempfile.mkdtemp(dir=config.options.workingDir) 630 try: 631 mount(config.store.devicePath, mountPoint, "iso9660") 632 discList = BackupFileList() 633 discList.addDirContents(mountPoint) 634 sourceList = BackupFileList() 635 sourceList.extend(fileList) 636 discListDigest = discList.generateDigestMap(stripPrefix=normalizeDir(mountPoint)) 637 sourceListDigest = sourceList.generateDigestMap(stripPrefix=normalizeDir(config.store.sourceDir)) 638 compareDigestMaps(sourceListDigest, discListDigest, verbose=True) 639 logger.info("Consistency check completed. No problems found.") 640 finally: 641 unmount(mountPoint, True, 5, 1) # try 5 times, and remove mount point when done
642 643 644 ######################################################################### 645 # User interface utilities 646 ######################################################################## 647
648 -def _getYesNoAnswer(prompt, default):
649 """ 650 Get a yes/no answer from the user. 651 The default will be placed at the end of the prompt. 652 A "Y" or "y" is considered yes, anything else no. 653 A blank (empty) response results in the default. 654 @param prompt: Prompt to show. 655 @param default: Default to set if the result is blank 656 @return: Boolean true/false corresponding to Y/N 657 """ 658 if default == "Y": 659 prompt = "%s [Y/n]: " % prompt 660 else: 661 prompt = "%s [y/N]: " % prompt 662 answer = raw_input(prompt) 663 if answer in [ None, "", ]: 664 answer = default 665 if answer[0] in [ "Y", "y", ]: 666 return True 667 else: 668 return False
669
670 -def _getChoiceAnswer(prompt, default, validChoices):
671 """ 672 Get a particular choice from the user. 673 The default will be placed at the end of the prompt. 674 The function loops until getting a valid choice. 675 A blank (empty) response results in the default. 676 @param prompt: Prompt to show. 677 @param default: Default to set if the result is None or blank. 678 @param validChoices: List of valid choices (strings) 679 @return: Valid choice from user. 680 """ 681 prompt = "%s [%s]: " % (prompt, default) 682 answer = raw_input(prompt) 683 if answer in [ None, "", ]: 684 answer = default 685 while answer not in validChoices: 686 print "Choice must be one of %s" % validChoices 687 answer = raw_input(prompt) 688 return answer
689
690 -def _getFloat(prompt, default):
691 """ 692 Get a floating point number from the user. 693 The default will be placed at the end of the prompt. 694 The function loops until getting a valid floating point number. 695 A blank (empty) response results in the default. 696 @param prompt: Prompt to show. 697 @param default: Default to set if the result is None or blank. 698 @return: Floating point number from user 699 """ 700 prompt = "%s [%.2f]: " % (prompt, default) 701 while True: 702 answer = raw_input(prompt) 703 if answer in [ None, "" ]: 704 return default 705 else: 706 try: 707 return float(answer) 708 except ValueError: 709 print "Enter a floating point number."
710
711 -def _getReturn(prompt):
712 """ 713 Get a return key from the user. 714 @param prompt: Prompt to show. 715 """ 716 raw_input(prompt)
717 718 719 ######################################################################### 720 # Main routine 721 ######################################################################## 722 723 if __name__ == "__main__": 724 sys.exit(cli()) 725