First CL for supporting arm cross compilation + testing on dart buildbots

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 shutil
+import sys
+import tempfile
+
+import bot
+
+GCS_BUCKET = 'gs://dart-misc'

[ricow1, 2013/05/17 08:19:07]

dart-cross-compiled-binaries?

[kustermann, 2013/05/17 09:34:23]

Done.

+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 main():
+  name, is_buildbot = bot.GetBotName()
+  build_py = os.path.join('tools', 'build.py')
+  test_py = os.path.join('tools', 'test.py')
+
+  cross_vm_pattern_match = re.match(CROSS_VM, name)
+  target_vm_pattern_match = re.match(TARGET_VM, name)
+  if cross_vm_pattern_match:
+    arch = cross_vm_pattern_match.group(1)
+    mode = cross_vm_pattern_match.group(2)
+
+    bot.Clobber()

[ricow1, 2013/05/17 08:19:07]

why do we clobber here?

[kustermann, 2013/05/17 09:34:23]

We don't clobber, we call a 'bot.clobber()' which checks if the environment
variable 'BUILDBOT_CLOBBER' was set. If so it will introduce a clobber step,
otherwise it will do nothing.

+    with bot.BuildStep('Build %s %s' % (arch, mode)):
+      args = [sys.executable, build_py,
+              '-m%s' % mode, '--arch=%s' % arch, 'runtime']
+      run(args)
+
+    tarball = 'cross_build_%s_%s.tar.bz2' % (arch, mode)
+    try:
+      with bot.BuildStep('Create build tarball'):
+        run(['tarj', '-cjf', tarball, '--exclude=**/obj',
+             '--exclude=**/obj.host', '--exclude=**/obj.target',
+             '--exclude=**/*analyzer*', 'out/'])
+
+      with bot.BuildStep('Upload build tarball'):

[ricow1, 2013/05/17 08:19:07]

I would, in addition to this, actually set the public-read acl on the file, that
way we will allow developers to download the binary

[kustermann, 2013/05/17 09:34:23]

Done.

+        run([GSUTIL, 'cp', tarball, "%s/%s" % (GCS_BUCKET, tarball)])
+    finally:
+      if os.path.exists(tarball):
+        os.remove(tarball)
+  elif target_vm_pattern_match:
+    arch = target_vm_pattern_match.group(1)
+    mode = target_vm_pattern_match.group(2)
+
+    bot.Clobber()
+    tarball = 'cross_build_%s_%s.tar.bz2' % (arch, mode)
+    try:
+      test_args = [sys.executable, test_py, '--progress=line', '--report',
+              '--time', '--mode=' + mode, '--arch=' + arch, '--compiler=none',
+              '--runtime=vm', '--write-debug-log']
+
+      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('tests'):
+        run(test_args)
+
+      with bot.BuildStep('checked_tests'):
+        run(test_args + ['--checked'])
+    finally:
+      if os.path.exists(tarball):
+        os.remove(tarball)
+  else:
+    raise Exception("Unknown builder name %s" % name)
+
+if __name__ == '__main__':
+  sys.exit(main())