Use gclient's git_cache setting in bot_update/api.py

recipe_modules/bot_update/api.py

 # Copyright 2014 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.
 
 
 """Recipe module to ensure a checkout is consistant on a bot."""
 
 from recipe_engine import recipe_api
 
 
@@ skipping 125 matching lines @@
     flags = [
         # 1. Do we want to run? (master/builder/slave).
         ['--master', master],
         ['--builder', builder],
         ['--slave', slave],
 
         # 2. What do we want to check out (spec/root/rev/rev_map).
         ['--spec', spec_string],
         ['--root', root],
         ['--revision_mapping_file', self.m.json.input(rev_map)],
-        ['--git-cache-dir', self.m.path['git_cache']],
 
         # 3. How to find the patch, if any (issue/patchset/patch_url).
         ['--issue', issue],
         ['--patchset', patchset],
         ['--patch_url', patch_url],
         ['--rietveld_server', self.m.properties.get('rietveld')],
         ['--gerrit_repo', gerrit_repo],
         ['--gerrit_ref', gerrit_ref],
         ['--apply_issue_email_file', email_file],
         ['--apply_issue_key_file', key_file],
 
         # 4. Hookups to JSON output back into recipes.
         ['--output_json', self.m.json.output()],]
 
+    # Honor gclient module's setting for whether to use a git cache.
+    # See chromium_no_git_cache config in gclient/api.py.

[wkorman, 2016/03/03 02:19:21]

s/api/config/ ?

+    if self.m.gclient.c.cache_dir is not None:
+      flags.append(['--git-cache-dir', self.m.path['git_cache']])
 
     # Collect all fixed revisions to simulate them in the json output.
     # Fixed revision are the explicit input revisions of bot_update.py, i.e.
     # every command line parameter "--revision name@value".
     fixed_revisions = {}
 
     revisions = {}
     for solution in cfg.solutions:
       if solution.revision:
         revisions[solution.name] = solution.revision
@@ skipping 99 matching lines @@
 
       # bot_update actually just sets root to be the folder name of the
       # first solution.
       if step_result.json.output['did_run']:
         co_root = step_result.json.output['root']
         cwd = kwargs.get('cwd', self.m.path['slave_build'])
         if 'checkout' not in self.m.path:
           self.m.path['checkout'] = cwd.join(*co_root.split(self.m.path.sep))
 
     return step_result