Clone this repo:
  1. b3099a2 client: increase timeout in test_wait_can_be_interrupted by Takuto Ikuta · 13 hours ago master
  2. dfd85ac [swarming_bot] Replace list with threading.Event in `TestTaskRunnerKilled`. by Michal Kiedys · 13 hours ago
  3. 8e65b54 Make sys.argv only hold str type in by Momo Sasaki · 3 days ago
  4. e7e6e5d Revert "swarming: make bot overhead as total overhead" by Takuto Ikuta · 4 days ago
  5. 8bd6849 Fix import errors in windows for python3. by Momo Sasaki · 4 days ago


LUCI is an ensemble of services that work together to run large scale CI (continuous integration) infrastructure to get results in O(1). It is used by the Chromium project.

See appengine/ for the services provided.


A complete CI toolkit:

  • Strict separation between task distribution and file distribution.
    • Swarming distributes tasks across an army (thousands) of Swarming bots.
    • Isolate server distributes 10s of thousands of files per task.
  • Federated authentication and ACL.
  • git based configuration data propagation.
  • Automatic Google Compute Engine VM recycling.
  • Windows, OSX and Linux (Ubuntu), used with Android, iOS, ChromeOS.
  • Written in python 2.7 along Go tools.
  • Used by the Chromium infrastructure and other teams.


  1. Install Google AppEngine SDK.
  2. git clone

Code layout


  • Branch master constains the latest code.
  • Branch stable contains the stable code.


  • Sign the Google CLA.
  • See the coding style.
  • Make sure your and are configured in git config.

Run the following to setup the code review tool and create your first review:

git clone $HOME/src/depot_tools
export PATH="$PATH:$HOME/src/depot_tools"
cd luci-py
git checkout -b work origin/master

# hack hack

git commit -a -m "This is awesome\"
# This will ask for your Google Account credentials.
git cl upload -s
# Wait for LGTM over email.
# Check the commit queue box in codereview website.
# Wait for the change to be tested and landed automatically.

Use git cl help and git cl help <cmd> for more details.


The preferred style is PEP8 with two-space indent; that is, the Chromium Python style, except functions use lowercase_with_underscores. Use yapf (git cl format) to autoformat new code.


This project is licensed under Apache v2.0 license. See LICENSE for details.