Archive cross compiled arm binaries to a revision specific file name

tools/bots/cross-vm.py

 #!/usr/bin/python
 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import os
 import re
 import sys
 
 import bot
 
 GCS_BUCKET = 'gs://dart-cross-compiled-binaries'
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
 sys.path.append(os.path.join(SCRIPT_DIR, '..'))
 
 import utils
 
 CROSS_VM = r'cross-(arm)-vm-linux-(release)'
 TARGET_VM = r'target-(arm)-vm-linux-(release)'
 GSUTIL = utils.GetBuildbotGSUtilPath()
 
 def run(args):
   print 'Running: %s' % (' '.join(args))
   sys.stdout.flush()
   bot.RunProcess(args)
 
-def tarball_name(arch, mode):
-  return 'cross_build_%s_%s.tar.bz2' % (arch, mode)
+def tarball_name(arch, mode, revision):
+  return 'cross_build_%s_%s_%s.tar.bz2' % (arch, mode, revision)
 
 def record_names(name, arch, mode):
   return ('record_%s_%s_%s.json' % (name, arch, mode),
           'record_output_%s_%s_%s.json' % (name, arch, mode))
 
 def cross_compiling_builder(arch, mode):
   build_py = os.path.join('tools', 'build.py')
-
-  tarball = tarball_name(arch, mode)
+  revision = int(os.environ['BUILDBOT_GOT_REVISION'])
+  tarball = tarball_name(arch, mode, revision)
   temporary_files = [tarball]
   bot.Clobber()
   try:
     num_run = int(os.environ['BUILDBOT_ANNOTATED_STEPS_RUN'])
     if num_run == 1:
       with bot.BuildStep('Build %s %s' % (arch, mode)):
         run([sys.executable, build_py,
              '-m%s' % mode, '--arch=%s' % arch, 'runtime'])
         # We need to build 'run_vm_tests.host' as well to enable
         # test.py to list the VM tests.
@@ skipping 21 matching lines @@
     for path in temporary_files:
       if os.path.exists(path):
         os.remove(path)
 
 def target_builder(arch, mode):
   test_py = os.path.join('tools', 'test.py')
   test_args = [sys.executable, test_py, '--progress=line', '--report',
                '--time', '--compiler=none', '--runtime=vm', '--write-debug-log',
                '--mode=' + mode, '--arch=' + arch]
 
-  tarball = tarball_name(arch, mode)
+  revision = int(os.environ['BUILDBOT_GOT_REVISION'])
+  tarball = tarball_name(arch, mode, revision)
   temporary_files = [tarball]
   bot.Clobber()
   try:
     with bot.BuildStep('Fetch build tarball'):
       run([GSUTIL, 'cp', "%s/%s" % (GCS_BUCKET, tarball), tarball])
 
     with bot.BuildStep('Unpack build tarball'):
       run(['tar', '-xjf', tarball])
 
     with bot.BuildStep('execute tests'):
@@ skipping 20 matching lines @@
     mode = target_vm_pattern_match.group(2)
     target_builder(arch, mode)
   else:
     raise Exception("Unknown builder name %s" % name)
 
 if __name__ == '__main__':
   try:
     sys.exit(main())
   except OSError as e:
     sys.exit(e.errno)