example flag CL

recipe_modules/gclient/api.py

 # 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.
 
 from recipe_engine import recipe_api
 
 
 class RevisionResolver(object):
   """Resolves the revision based on build properties."""
 
@@ skipping 303 matching lines @@
        blink)
     """
     return (
       self.m.properties.get('top_of_tree_blink') or
       self.m.properties.get('patch_project') == 'blink')
 
   def break_locks(self):
     """Remove all index.lock files. If a previous run of git crashed, bot was
     reset, etc... we might end up with leftover index.lock files.
     """
-    self.m.python.inline(
-      'cleanup index.lock',
-      """
-        import os, sys
+    if self.c and self.c.break_locks_flag:
+      self.m.python.inline(
+        'cleanup index.lock',
+        """
+          import os, sys
 
-        build_path = sys.argv[1]
-        if os.path.exists(build_path):
-          for (path, dir, files) in os.walk(build_path):
-            for cur_file in files:
-              if cur_file.endswith('index.lock'):
-                path_to_file = os.path.join(path, cur_file)
-                print 'deleting %s' % path_to_file
-                os.remove(path_to_file)
-      """,
-      args=[self.m.path['slave_build']],
-      infra_step=True,
-    )
+          build_path = sys.argv[1]
+          if os.path.exists(build_path):
+            for (path, dir, files) in os.walk(build_path):
+              for cur_file in files:
+                if cur_file.endswith('index.lock'):
+                  path_to_file = os.path.join(path, cur_file)
+                  os.remove(path_to_file)
+        """,
+        args=[self.m.path['slave_build']],
+        infra_step=True,
+      )
+    else:
+      self.m.python.inline(
+        'cleanup index.lock',
+        """
+          import os, sys
+
+          build_path = sys.argv[1]
+          if os.path.exists(build_path):
+            for (path, dir, files) in os.walk(build_path):
+              for cur_file in files:
+                if cur_file.endswith('index.lock'):
+                  path_to_file = os.path.join(path, cur_file)
+                  print 'deleting %s' % path_to_file
+                  os.remove(path_to_file)
+        """,
+        args=[self.m.path['slave_build']],
+        infra_step=True,
+      )
 
   def calculate_patch_root(self, patch_project, gclient_config=None):
     """Returns path where a patch should be applied to based patch_project.
 
     Maps "patch_project" to a path of directories relative to checkout's root,
     which describe where to place the patch.
 
     For now, considers only first solution (c.solutions[0]), but in theory can
     be extended to all of them.
 
@@ skipping 19 matching lines @@
     """Updates config revision corresponding to patch_project.
 
     Useful for bot_update only, as this is the only consumer of gclient's config
     revision map. This doesn't overwrite the revision if it was already set.
     """
     assert patch_project is None or isinstance(patch_project, basestring)
     cfg = gclient_config or self.c
     path, revision = cfg.patch_projects.get(patch_project, (None, None))
     if path and revision and path not in cfg.revisions:
       cfg.revisions[path] = revision