Add got_revision support for apply_issue.

annotated_gclient.py

Index: annotated_gclient.py
diff --git a/annotated_gclient.py b/annotated_gclient.py
new file mode 100755
index 0000000000000000000000000000000000000000..1ed0f719a7f3bf5e05e82fe8a6ad2f56d8b129af
--- /dev/null
+++ b/annotated_gclient.py
@@ -0,0 +1,89 @@
+#!/usr/bin/env python
+# Copyright 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Wraps gclient calls with annotated output.
+
+Note that you will have to use -- to stop option parsing for gclient flags.
+
+To run `gclient sync --gclientfile=.gclient` and annotate got_v8_revision:
+  `annotated_gclient.py --revision-mapping='{"src/v8": "got_v8_revision"}' --
+      sync --gclientfile=.gclient`
+"""
+
+import contextlib
+import json
+import optparse
+import os
+import subprocess
+import sys
+import tempfile
+
+
+@contextlib.contextmanager
+def temp_filename(suffix='', prefix='tmp'):
+  output_fd, output_file = tempfile.mkstemp(suffix=suffix, prefix=prefix)
+  os.close(output_fd)
+
+  yield output_file
+
+  try:
+    os.remove(output_file)
+  except OSError as e:
+    print 'Error cleaning up temp file %s: %s' % (output_file, e)
+
+
+def parse_got_revision(filename, revision_mapping):
+  result = {}
+  with open(filename) as f:
+    data = json.load(f)
+
+  for path, info in data['solutions'].iteritems():
+    # gclient json paths always end with a slash
+    path = path.rstrip('/')
+    if path in revision_mapping:
+      propname = revision_mapping[path]
+      result[propname] = info['revision']
+
+  return result
+
+
+def emit_buildprops(got_revisions):
+  for prop, revision in got_revisions.iteritems():
+    print '@@@SET_BUILD_PROPERTY@%s@%s@@@' % (prop, revision)
+
+
+def main():
+  parser = optparse.OptionParser(
+      description=('Runs gclient and annotates the output with any '
+                   'got_revisions.'))
+  parser.add_option('--revision-mapping', default='{}',
+                    help='json dict of directory-to-property mappings.')
+  parser.add_option('--suffix', default='gclient',
+                    help='tempfile suffix')
+  opts, args = parser.parse_args()
+
+  revision_mapping = json.loads(opts.revision_mapping)
+
+  if not args:
+    parser.error('Must provide arguments to gclient.')
+
+  if any(a.startswith('--output-json') for a in args):
+    parser.error('Can\'t call annotated_gclient with --output-json.')
+
+  with temp_filename(opts.suffix) as f:
+    cmd = ['gclient']
+    cmd.extend(args)
+    cmd.extend(['--output-json', f])
+    p = subprocess.Popen(cmd)
+    p.wait()
+
+    if p.returncode == 0:
+      revisions = parse_got_revision(f, revision_mapping)
+      emit_buildprops(revisions)
+    return p.returncode
+
+
+if __name__ == '__main__':
+  sys.exit(main())