release.py

   1 # Copyright (C) 2009, Thomas Leonard
   2 # See the README file for details, or visit http://0install.net.
   3
   4 import os, subprocess, shutil, sys
   5 from xml.dom import minidom
   6 from zeroinstall import SafeException
   7 from zeroinstall.injector import model
   8 from zeroinstall.support import ro_rmtree
   9 from logging import info, warn
  10
  11 sys.path.insert(0, os.environ['RELEASE_0REPO'])
  12 from repo import registry, merge
  13
  14 import support, compile
  15 from scm import get_scm
  16
  17 XMLNS_RELEASE = 'http://zero-install.sourceforge.net/2007/namespaces/0release'
  18
  19 valid_phases = ['commit-release', 'generate-archive']
  20
  21 TMP_BRANCH_NAME = '0release-tmp'
  22
  23 test_command = os.environ['0TEST']
  24
  25 def run_unit_tests(local_feed):
  26         print "Running self-tests..."
  27         exitstatus = subprocess.call([test_command, '--', local_feed])
  28         if exitstatus == 2:
  29                 print "SKIPPED unit tests for %s (no 'test' command)" % local_feed
  30                 return
  31         if exitstatus:
  32                 raise SafeException("Self-test failed with exit status %d" % exitstatus)
  33
  34 def upload_archives(options, status, uploads):
  35         # For each binary or source archive in uploads, ensure it is available
  36         # from options.archive_dir_public_url
  37
  38         # We try to do all the uploads together first, and then verify them all
  39         # afterwards. This is because we may have to wait for them to be moved
  40         # from an incoming queue before we can test them.
  41
  42         def url(archive):
  43                 return support.get_archive_url(options, status.release_version, archive)
  44
  45         # Check that url exists and has the given size
  46         def is_uploaded(url, size):
  47                 if url.startswith('http://TESTING/releases'):
  48                         return True
  49
  50                 print "Testing URL %s..." % url
  51                 try:
  52                         actual_size = int(support.get_size(url))
  53                 except Exception, ex:
  54                         print "Can't get size of '%s': %s" % (url, ex)
  55                         return False
  56                 else:
  57                         if actual_size == size:
  58                                 return True
  59                         print "WARNING: %s exists, but size is %d, not %d!" % (url, actual_size, size)
  60                         return False
  61
  62         # status.verified_uploads is an array of status flags:
  63         description = {
  64                 'N': 'Upload required',
  65                 'A': 'Upload has been attempted, but we need to check whether it worked',
  66                 'V': 'Upload has been checked (exists and has correct size)',
  67         }
  68
  69         if status.verified_uploads is None:
  70                 # First time around; no point checking for existing uploads
  71                 status.verified_uploads = 'N' * len(uploads)
  72                 status.save()
  73
  74         while True:
  75                 print "\nUpload status:"
  76                 for i, stat in enumerate(status.verified_uploads):
  77                         print "- %s : %s" % (uploads[i], description[stat])
  78                 print
  79
  80                 # Break if finished
  81                 if status.verified_uploads == 'V' * len(uploads):
  82                         break
  83
  84                 # Find all New archives
  85                 to_upload = []
  86                 for i, stat in enumerate(status.verified_uploads):
  87                         assert stat in 'NAV'
  88                         if stat == 'N':
  89                                 to_upload.append(uploads[i])
  90                                 print "Upload %s/%s as %s" % (status.release_version, uploads[i], url(uploads[i]))
  91
  92                 cmd = options.archive_upload_command.strip()
  93
  94                 if to_upload:
  95                         # Mark all New items as Attempted
  96                         status.verified_uploads = status.verified_uploads.replace('N', 'A')
  97                         status.save()
  98
  99                         # Upload them...
 100                         if cmd:
 101                                 support.show_and_run(cmd, to_upload)
 102                         else:
 103                                 if len(to_upload) == 1:
 104                                         print "No upload command is set => please upload the archive manually now"
 105                                         raw_input('Press Return once the archive is uploaded.')
 106                                 else:
 107                                         print "No upload command is set => please upload the archives manually now"
 108                                         raw_input('Press Return once the %d archives are uploaded.' % len(to_upload))
 109
 110                 # Verify all Attempted uploads
 111                 new_stat = ''
 112                 for i, stat in enumerate(status.verified_uploads):
 113                         assert stat in 'AV', status.verified_uploads
 114                         if stat == 'A' :
 115                                 if not is_uploaded(url(uploads[i]), os.path.getsize(uploads[i])):
 116                                         print "** Archive '%s' still not uploaded! Try again..." % uploads[i]
 117                                         stat = 'N'
 118                                 else:
 119                                         stat = 'V'
 120                         new_stat += stat
 121
 122                 status.verified_uploads = new_stat
 123                 status.save()
 124
 125                 if 'N' in new_stat and cmd:
 126                         raw_input('Press Return to try again.')
 127
 128 legacy_warning = """*** Note: the upload functions of 0release
 129 *** (--archive-dir-public-url, --master-feed-file, --archive-upload-command
 130 *** and --master-feed-upload-command) are being replaced by 0repo. They may
 131 *** go away in future. If 0repo is not suitable for your needs, please
 132 *** contact the mailing list to let us know.
 133 ***
 134 ***   http://www.0install.net/0repo.html
 135 ***   http://www.0install.net/support.html#lists
 136 """
 137
 138 def do_release(local_feed, options):
 139         if options.master_feed_file or options.archive_dir_public_url or options.archive_upload_command or options.master_feed_upload_command:
 140                 print(legacy_warning)
 141
 142         if options.master_feed_file:
 143                 options.master_feed_file = os.path.abspath(options.master_feed_file)
 144
 145         if not local_feed.feed_for:
 146                 raise SafeException("Feed %s missing a <feed-for> element" % local_feed.local_path)
 147
 148         status = support.Status()
 149         local_impl = support.get_singleton_impl(local_feed)
 150
 151         local_impl_dir = local_impl.id
 152         assert local_impl_dir.startswith('/')
 153         local_impl_dir = os.path.realpath(local_impl_dir)
 154         assert os.path.isdir(local_impl_dir)
 155         assert local_feed.local_path.startswith(local_impl_dir + '/')
 156
 157         # From the impl directory to the feed
 158         # NOT relative to the archive root (in general)
 159         local_iface_rel_path = local_feed.local_path[len(local_impl_dir) + 1:]
 160         assert not local_iface_rel_path.startswith('/')
 161         assert os.path.isfile(os.path.join(local_impl_dir, local_iface_rel_path))
 162
 163         phase_actions = {}
 164         for phase in valid_phases:
 165                 phase_actions[phase] = []       # List of <release:action> elements
 166
 167         add_toplevel_dir = None
 168         release_management = local_feed.get_metadata(XMLNS_RELEASE, 'management')
 169         if len(release_management) == 1:
 170                 info("Found <release:management> element.")
 171                 release_management = release_management[0]
 172                 for x in release_management.childNodes:
 173                         if x.uri == XMLNS_RELEASE and x.name == 'action':
 174                                 phase = x.getAttribute('phase')
 175                                 if phase not in valid_phases:
 176                                         raise SafeException("Invalid action phase '%s' in local feed %s. Valid actions are:\n%s" % (phase, local_feed.local_path, '\n'.join(valid_phases)))
 177                                 phase_actions[phase].append(x.content)
 178                         elif x.uri == XMLNS_RELEASE and x.name == 'add-toplevel-directory':
 179                                 add_toplevel_dir = local_feed.get_name()
 180                         else:
 181                                 warn("Unknown <release:management> element: %s", x)
 182         elif len(release_management) > 1:
 183                 raise SafeException("Multiple <release:management> sections in %s!" % local_feed)
 184         else:
 185                 info("No <release:management> element found in local feed.")
 186
 187         scm = get_scm(local_feed, options)
 188
 189         # Path relative to the archive / SCM root
 190         local_iface_rel_root_path = local_feed.local_path[len(scm.root_dir) + 1:]
 191
 192         def run_hooks(phase, cwd, env):
 193                 info("Running hooks for phase '%s'" % phase)
 194                 full_env = os.environ.copy()
 195                 full_env.update(env)
 196                 for x in phase_actions[phase]:
 197                         print "[%s]: %s" % (phase, x)
 198                         support.check_call(x, shell = True, cwd = cwd, env = full_env)
 199
 200         def set_to_release():
 201                 print "Snapshot version is " + local_impl.get_version()
 202                 release_version = options.release_version
 203                 if release_version is None:
 204                         suggested = support.suggest_release_version(local_impl.get_version())
 205                         release_version = raw_input("Version number for new release [%s]: " % suggested)
 206                         if not release_version:
 207                                 release_version = suggested
 208
 209                 scm.ensure_no_tag(release_version)
 210
 211                 status.head_before_release = scm.get_head_revision()
 212                 status.save()
 213
 214                 working_copy = local_impl.id
 215                 run_hooks('commit-release', cwd = working_copy, env = {'RELEASE_VERSION': release_version})
 216
 217                 print "Releasing version", release_version
 218                 support.publish(local_feed.local_path, set_released = 'today', set_version = release_version)
 219
 220                 support.backup_if_exists(release_version)
 221                 os.mkdir(release_version)
 222                 os.chdir(release_version)
 223
 224                 status.old_snapshot_version = local_impl.get_version()
 225                 status.release_version = release_version
 226                 status.head_at_release = scm.commit('Release %s' % release_version, branch = TMP_BRANCH_NAME, parent = 'HEAD')
 227                 status.save()
 228
 229         def set_to_snapshot(snapshot_version):
 230                 assert snapshot_version.endswith('-post')
 231                 support.publish(local_feed.local_path, set_released = '', set_version = snapshot_version)
 232                 scm.commit('Start development series %s' % snapshot_version, branch = TMP_BRANCH_NAME, parent = TMP_BRANCH_NAME)
 233                 status.new_snapshot_version = scm.get_head_revision()
 234                 status.save()
 235
 236         def ensure_ready_to_release():
 237                 #if not options.master_feed_file:
 238                 #       raise SafeException("Master feed file not set! Check your configuration")
 239
 240                 scm.ensure_committed()
 241                 scm.ensure_versioned(os.path.abspath(local_feed.local_path))
 242                 info("No uncommitted changes. Good.")
 243                 # Not needed for GIT. For SCMs where tagging is expensive (e.g. svn) this might be useful.
 244                 #run_unit_tests(local_impl)
 245
 246                 scm.grep('\(^\\|[^=]\)\<\\(TODO\\|XXX\\|FIXME\\)\>')
 247
 248         def create_feed(target_feed, local_iface_path, archive_file, archive_name, main):
 249                 shutil.copyfile(local_iface_path, target_feed)
 250
 251                 support.publish(target_feed,
 252                         set_main = main,
 253                         archive_url = support.get_archive_url(options, status.release_version, os.path.basename(archive_file)),
 254                         archive_file = archive_file,
 255                         archive_extract = archive_name)
 256
 257         def get_previous_release(this_version):
 258                 """Return the highest numbered verison in the master feed before this_version.
 259                 @return: version, or None if there wasn't one"""
 260                 parsed_release_version = model.parse_version(this_version)
 261
 262                 versions = [model.parse_version(version) for version in scm.get_tagged_versions()]
 263                 versions = [version for version in versions if version < parsed_release_version]
 264
 265                 if versions:
 266                         return model.format_version(max(versions))
 267                 return None
 268
 269         def export_changelog(previous_release):
 270                 changelog = file('changelog-%s' % status.release_version, 'w')
 271                 try:
 272                         try:
 273                                 scm.export_changelog(previous_release, status.head_before_release, changelog)
 274                         except SafeException, ex:
 275                                 print "WARNING: Failed to generate changelog: " + str(ex)
 276                         else:
 277                                 print "Wrote changelog from %s to here as %s" % (previous_release or 'start', changelog.name)
 278                 finally:
 279                         changelog.close()
 280
 281         def fail_candidate():
 282                 cwd = os.getcwd()
 283                 assert cwd.endswith(status.release_version)
 284                 support.backup_if_exists(cwd)
 285                 scm.delete_branch(TMP_BRANCH_NAME)
 286                 os.unlink(support.release_status_file)
 287                 print "Restored to state before starting release. Make your fixes and try again..."
 288
 289         def release_via_0repo(new_impls_feed):
 290                 import repo.cmd
 291                 support.make_archives_relative(new_impls_feed)
 292                 oldcwd = os.getcwd()
 293                 try:
 294                         repo.cmd.main(['0repo', 'add', '--', new_impls_feed])
 295                 finally:
 296                         os.chdir(oldcwd)
 297
 298         def release_without_0repo(archive_file, new_impls_feed):
 299                 assert options.master_feed_file
 300
 301                 if not options.archive_dir_public_url:
 302                         raise SafeException("Archive directory public URL is not set! Edit configuration and try again.")
 303
 304                 if status.updated_master_feed:
 305                         print "Already added to master feed. Not changing."
 306                 else:
 307                         publish_opts = {}
 308                         if os.path.exists(options.master_feed_file):
 309                                 # Check we haven't already released this version
 310                                 master = support.load_feed(os.path.realpath(options.master_feed_file))
 311                                 existing_releases = [impl for impl in master.implementations.values() if impl.get_version() == status.release_version]
 312                                 if len(existing_releases):
 313                                         raise SafeException("Master feed %s already contains an implementation with version number %s!" % (options.master_feed_file, status.release_version))
 314
 315                                 previous_release = get_previous_release(status.release_version)
 316                                 previous_testing_releases = [impl for impl in master.implementations.values() if impl.get_version() == previous_release
 317                                                                                                              and impl.upstream_stability == model.stability_levels["testing"]]
 318                                 if previous_testing_releases:
 319                                         print "The previous release, version %s, is still marked as 'testing'. Set to stable?" % previous_release
 320                                         if support.get_choice(['Yes', 'No']) == 'Yes':
 321                                                 publish_opts['select_version'] = previous_release
 322                                                 publish_opts['set_stability'] = "stable"
 323
 324                         support.publish(options.master_feed_file, local = new_impls_feed, xmlsign = True, key = options.key, **publish_opts)
 325
 326                         status.updated_master_feed = 'true'
 327                         status.save()
 328
 329                 # Copy files...
 330                 uploads = [os.path.basename(archive_file)]
 331                 for b in compiler.get_binary_feeds():
 332                         binary_feed = support.load_feed(b)
 333                         impl, = binary_feed.implementations.values()
 334                         uploads.append(os.path.basename(impl.download_sources[0].url))
 335
 336                 upload_archives(options, status, uploads)
 337
 338                 feed_base = os.path.dirname(list(local_feed.feed_for)[0])
 339                 feed_files = [options.master_feed_file]
 340                 print "Upload %s into %s" % (', '.join(feed_files), feed_base)
 341                 cmd = options.master_feed_upload_command.strip()
 342                 if cmd:
 343                         support.show_and_run(cmd, feed_files)
 344                 else:
 345                         print "NOTE: No feed upload command set => you'll have to upload them yourself!"
 346
 347         def accept_and_publish(archive_file, src_feed_name):
 348                 if status.tagged:
 349                         print "Already tagged in SCM. Not re-tagging."
 350                 else:
 351                         scm.ensure_committed()
 352                         head = scm.get_head_revision()
 353                         if head != status.head_before_release:
 354                                 raise SafeException("Changes committed since we started!\n" +
 355                                                     "HEAD was " + status.head_before_release + "\n"
 356                                                     "HEAD now " + head)
 357
 358                         scm.tag(status.release_version, status.head_at_release)
 359                         scm.reset_hard(TMP_BRANCH_NAME)
 360                         scm.delete_branch(TMP_BRANCH_NAME)
 361
 362                         status.tagged = 'true'
 363                         status.save()
 364
 365                 assert len(local_feed.feed_for) == 1
 366
 367                 # Merge the source and binary feeds together first, so
 368                 # that we update the master feed atomically and only
 369                 # have to sign it once.
 370                 with open(src_feed_name, 'rb') as stream:
 371                         doc = minidom.parse(stream)
 372                 for b in compiler.get_binary_feeds():
 373                         with open(b, 'rb') as stream:
 374                                 bin_doc = minidom.parse(b)
 375                         merge.merge(doc, bin_doc)
 376                 new_impls_feed = 'merged.xml'
 377                 with open(new_impls_feed, 'wb') as stream:
 378                         doc.writexml(stream)
 379
 380                 # TODO: support uploading to a sub-feed (requires support in 0repo too)
 381                 master_feed, = local_feed.feed_for
 382                 repository = registry.lookup(master_feed, missing_ok = True)
 383                 if repository:
 384                         release_via_0repo(new_impls_feed)
 385                 else:
 386                         release_without_0repo(archive_file, new_impls_feed)
 387
 388                 os.unlink(new_impls_feed)
 389
 390                 print "Push changes to public SCM repository..."
 391                 public_repos = options.public_scm_repository
 392                 if public_repos:
 393                         scm.push_head_and_release(status.release_version)
 394                 else:
 395                         print "NOTE: No public repository set => you'll have to push the tag and trunk yourself."
 396
 397                 os.unlink(support.release_status_file)
 398
 399         if status.head_before_release:
 400                 head = scm.get_head_revision()
 401                 if status.release_version:
 402                         print "RESUMING release of %s %s" % (local_feed.get_name(), status.release_version)
 403                         if options.release_version and options.release_version != status.release_version:
 404                                 raise SafeException("Can't start release of version %s; we are currently releasing %s.\nDelete the release-status file to abort the previous release." % (options.release_version, status.release_version))
 405                 elif head == status.head_before_release:
 406                         print "Restarting release of %s (HEAD revision has not changed)" % local_feed.get_name()
 407                 else:
 408                         raise SafeException("Something went wrong with the last run:\n" +
 409                                             "HEAD revision for last run was " + status.head_before_release + "\n" +
 410                                             "HEAD revision now is " + head + "\n" +
 411                                             "You should revert your working copy to the previous head and try again.\n" +
 412                                             "If you're sure you want to release from the current head, delete '" + support.release_status_file + "'")
 413         else:
 414                 print "Releasing", local_feed.get_name()
 415
 416         ensure_ready_to_release()
 417
 418         if status.release_version:
 419                 if not os.path.isdir(status.release_version):
 420                         raise SafeException("Can't resume; directory %s missing. Try deleting '%s'." % (status.release_version, support.release_status_file))
 421                 os.chdir(status.release_version)
 422                 need_set_snapshot = False
 423                 if status.tagged:
 424                         print "Already tagged. Resuming the publishing process..."
 425                 elif status.new_snapshot_version:
 426                         head = scm.get_head_revision()
 427                         if head != status.head_before_release:
 428                                 raise SafeException("There are more commits since we started!\n"
 429                                                     "HEAD was " + status.head_before_release + "\n"
 430                                                     "HEAD now " + head + "\n"
 431                                                     "To include them, delete '" + support.release_status_file + "' and try again.\n"
 432                                                     "To leave them out, put them on a new branch and reset HEAD to the release version.")
 433                 else:
 434                         raise SafeException("Something went wrong previously when setting the new snapshot version.\n" +
 435                                             "Suggest you reset to the original HEAD of\n%s and delete '%s'." % (status.head_before_release, support.release_status_file))
 436         else:
 437                 set_to_release()        # Changes directory
 438                 assert status.release_version
 439                 need_set_snapshot = True
 440
 441         # May be needed by the upload command
 442         os.environ['RELEASE_VERSION'] = status.release_version
 443
 444         archive_name = support.make_archive_name(local_feed.get_name(), status.release_version)
 445         archive_file = archive_name + '.tar.bz2'
 446
 447         export_prefix = archive_name
 448         if add_toplevel_dir is not None:
 449                 export_prefix += '/' + add_toplevel_dir
 450
 451         if status.created_archive and os.path.isfile(archive_file):
 452                 print "Archive already created"
 453         else:
 454                 support.backup_if_exists(archive_file)
 455                 scm.export(export_prefix, archive_file, status.head_at_release)
 456
 457                 has_submodules = scm.has_submodules()
 458
 459                 if phase_actions['generate-archive'] or has_submodules:
 460                         try:
 461                                 support.unpack_tarball(archive_file)
 462                                 if has_submodules:
 463                                         scm.export_submodules(archive_name)
 464                                 run_hooks('generate-archive', cwd = archive_name, env = {'RELEASE_VERSION': status.release_version})
 465                                 info("Regenerating archive (may have been modified by generate-archive hooks...")
 466                                 support.check_call(['tar', 'cjf', archive_file, archive_name])
 467                         except SafeException:
 468                                 scm.reset_hard(scm.get_current_branch())
 469                                 fail_candidate()
 470                                 raise
 471
 472                 status.created_archive = 'true'
 473                 status.save()
 474
 475         if need_set_snapshot:
 476                 set_to_snapshot(status.release_version + '-post')
 477                 # Revert back to the original revision, so that any fixes the user makes
 478                 # will get applied before the tag
 479                 scm.reset_hard(scm.get_current_branch())
 480
 481         #backup_if_exists(archive_name)
 482         support.unpack_tarball(archive_file)
 483
 484         extracted_feed_path = os.path.abspath(os.path.join(export_prefix, local_iface_rel_root_path))
 485         assert os.path.isfile(extracted_feed_path), "Local feed not in archive! Is it under version control?"
 486         extracted_feed = support.load_feed(extracted_feed_path)
 487         extracted_impl = support.get_singleton_impl(extracted_feed)
 488
 489         if extracted_impl.main:
 490                 # Find main executable, relative to the archive root
 491                 abs_main = os.path.join(os.path.dirname(extracted_feed_path), extracted_impl.id, extracted_impl.main)
 492                 main = support.relative_path(archive_name + '/', abs_main)
 493                 if main != extracted_impl.main:
 494                         print "(adjusting main: '%s' for the feed inside the archive, '%s' externally)" % (extracted_impl.main, main)
 495                         # XXX: this is going to fail if the feed uses the new <command> syntax
 496                 if not os.path.exists(abs_main):
 497                         raise SafeException("Main executable '%s' not found after unpacking archive!" % abs_main)
 498                 if main == extracted_impl.main:
 499                         main = None     # Don't change the main attribute
 500         else:
 501                 main = None
 502
 503         try:
 504                 if status.src_tests_passed:
 505                         print "Unit-tests already passed - not running again"
 506                 else:
 507                         # Make directories read-only (checks tests don't write)
 508                         support.make_readonly_recursive(archive_name)
 509
 510                         run_unit_tests(extracted_feed_path)
 511                         status.src_tests_passed = True
 512                         status.save()
 513         except SafeException:
 514                 print "(leaving extracted directory for examination)"
 515                 fail_candidate()
 516                 raise
 517         # Unpack it again in case the unit-tests changed anything
 518         ro_rmtree(archive_name)
 519         support.unpack_tarball(archive_file)
 520
 521         # Generate feed for source
 522         src_feed_name = '%s.xml' % archive_name
 523         create_feed(src_feed_name, extracted_feed_path, archive_file, archive_name, main)
 524         print "Wrote source feed as %s" % src_feed_name
 525
 526         # If it's a source package, compile the binaries now...
 527         compiler = compile.Compiler(options, os.path.abspath(src_feed_name), release_version = status.release_version)
 528         compiler.build_binaries()
 529
 530         previous_release = get_previous_release(status.release_version)
 531         export_changelog(previous_release)
 532
 533         if status.tagged:
 534                 raw_input('Already tagged. Press Return to resume publishing process...')
 535                 choice = 'Publish'
 536         else:
 537                 print "\nCandidate release archive:", archive_file
 538                 print "(extracted to %s for inspection)" % os.path.abspath(archive_name)
 539
 540                 print "\nPlease check candidate and select an action:"
 541                 print "P) Publish candidate (accept)"
 542                 print "F) Fail candidate (delete release-status file)"
 543                 if previous_release:
 544                         print "D) Diff against release archive for %s" % previous_release
 545                         maybe_diff = ['Diff']
 546                 else:
 547                         maybe_diff = []
 548                 print "(you can also hit CTRL-C and resume this script when done)"
 549
 550                 while True:
 551                         choice = support.get_choice(['Publish', 'Fail'] + maybe_diff)
 552                         if choice == 'Diff':
 553                                 previous_archive_name = support.make_archive_name(local_feed.get_name(), previous_release)
 554                                 previous_archive_file = '../%s/%s.tar.bz2' % (previous_release, previous_archive_name)
 555
 556                                 # For archives created by older versions of 0release
 557                                 if not os.path.isfile(previous_archive_file):
 558                                         old_previous_archive_file = '../%s.tar.bz2' % previous_archive_name
 559                                         if os.path.isfile(old_previous_archive_file):
 560                                                 previous_archive_file = old_previous_archive_file
 561
 562                                 if os.path.isfile(previous_archive_file):
 563                                         support.unpack_tarball(previous_archive_file)
 564                                         try:
 565                                                 support.show_diff(previous_archive_name, archive_name)
 566                                         finally:
 567                                                 shutil.rmtree(previous_archive_name)
 568                                 else:
 569                                         # TODO: download it?
 570                                         print "Sorry, archive file %s not found! Can't show diff." % previous_archive_file
 571                         else:
 572                                 break
 573
 574         info("Deleting extracted archive %s", archive_name)
 575         shutil.rmtree(archive_name)
 576
 577         if choice == 'Publish':
 578                 accept_and_publish(archive_file, src_feed_name)
 579         else:
 580                 assert choice == 'Fail'
 581                 fail_candidate()