[swarming] Add isolate driver.

tools/isolate_driver.py

+#!/usr/bin/env python
+# Copyright 2015 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Adaptor script called through build/isolate.gypi.
+
+Slimmed down version of chromium's isolate driver that doesn't process dynamic
+dependencies.
+"""
+
+import json
+import logging
+import os
+import subprocess
+import sys
+
+TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
+SWARMING_CLIENT_DIR = os.path.join(TOOLS_DIR, 'swarming_client')

[M-A Ruel, 2015/10/01 12:17:06]

Remove lines 19-22

[Michael Achenbach, 2015/10/01 12:28:29]

Done.

+SRC_DIR = os.path.dirname(TOOLS_DIR)
+
+sys.path.insert(0, SWARMING_CLIENT_DIR)
+
+
+def prepare_isolate_call(args, output):
+  """Gathers all information required to run isolate.py later.
+
+  Dumps it as JSON to |output| file.
+  """
+  with open(output, 'wb') as f:
+    json.dump({
+      'args': args,
+      'dir': os.getcwd(),
+      'version': 1,
+    }, f, indent=2, sort_keys=True)
+
+
+def main():
+  logging.basicConfig(level=logging.ERROR, format='%(levelname)7s %(message)s')
+  args = sys.argv[1:]

[M-A Ruel, 2015/10/01 12:17:06]

replace lines 40-41 with:
if len(sys.argv) < 2:
  print >> sys.stderr, 'Internal failure; mode required'
  return 1
mode = sys.argv.args[1]
args = sys.argv[1:]

[Michael Achenbach, 2015/10/01 12:28:29]

Done.

+  mode = args[0] if args else None
+  isolate = None
+  isolated = None
+  for i, arg in enumerate(args):
+    if arg == '--isolate':
+      isolate = i + 1
+    if arg == '--isolated':
+      isolated = i + 1
+  if isolate is None or isolated is None or not mode:

[M-A Ruel, 2015/10/01 12:17:06]

if not isolate or not isolated:

[Michael Achenbach, 2015/10/01 12:28:29]

Done.

+    print >> sys.stderr, 'Internal failure'
+    return 1
+
+  # In 'prepare' mode just collect all required information for postponed
+  # isolated.py invocation later, store it in *.isolated.gen.json file.
+  if mode == 'prepare':
+    prepare_isolate_call(args[1:], args[isolated] + '.gen.json')
+    return 0
+
+  swarming_client = os.path.join(SRC_DIR, 'tools', 'swarming_client')

[M-A Ruel, 2015/10/01 12:17:06]

os.path.join(TOOLS_DIR, 'swarming_client')

[Michael Achenbach, 2015/10/01 12:28:29]

Done.

+  sys.stdout.flush()
+  result = subprocess.call(

[M-A Ruel, 2015/10/01 12:17:06]

return subprocess.call(

[Michael Achenbach, 2015/10/01 12:28:29]

Done.

+      [sys.executable, os.path.join(swarming_client, 'isolate.py')] + args)
+  return result
+
+
+if __name__ == '__main__':
+  sys.exit(main())