commit fcbcc5002cdf67bfb5868c624801d7f7112ef9e2
author Kuang-che Wu <kcwu@chromium.org> Mon Jun 01 11:48:20 2020 +0800
committer Kuang-che Wu <kcwu@chromium.org> Mon Jun 01 11:48:43 2020 +0800
tree 520c31831fe6197ff8d2340f653e389c79fc1fa5
parent ed1bb62496675d3757c55486ca5a872aee6b349e

bisect-kit: cache some git operations

On a machine with slow disk io, this change could reduce
bisect_cr_localbuild_internal.py init time from 8 to 3.5 minutes.

BUG=b:157413258
TEST=./bisect_cr_localbuild_internal.py init --old 84.0.4142.0 --new 84.0.4147.0

Change-Id: I423c3df56eaa17acdd3bbe882b61fb99cde03fa7

bisect_kit/git_util.py

diff --git a/bisect_kit/git_util.py b/bisect_kit/git_util.py
index 82a202b..f3da4e4 100644
--- a/bisect_kit/git_util.py
+++ b/bisect_kit/git_util.py
@@ -14,6 +14,7 @@
 import subprocess
 import time
 
+from bisect_kit import cache_util
 from bisect_kit import cli
 from bisect_kit import util
 
@@ -373,6 +374,7 @@
       cwd=git_repo) != ''
 
 
+@cache_util.Cache.default_disabled
 def get_commit_metadata(git_repo, rev):
   """Get metadata of given commit.
 
@@ -517,6 +519,7 @@
                    (path, git_repo, rev))
 
 
+@cache_util.Cache.default_disabled
 def get_file_from_revision(git_repo, rev, path):
   """Get file content of given revision.