[post_process] Add HasLog and DoesNotHaveLog

Add HasLog and DoesNotHaveLog checks to post_process.

Change-Id: I03fe45478169ad57666d6781b4238eaaa95a76a8
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/recipes-py/+/5421808
Reviewed-by: Yuanjun Huang <yuanjunh@google.com>
Auto-Submit: Rob Mohr <mohrr@google.com>
Commit-Queue: Yuanjun Huang <yuanjunh@google.com>
4 files changed
tree: e9434c1638385e1d3912d44d14a8bfe6693cccfe
  1. doc/
  2. infra/
  3. misc/
  4. recipe_engine/
  5. recipe_modules/
  6. recipe_proto/
  7. recipes/
  8. unittests/
  9. .gitattributes
  10. .gitignore
  11. .pycharm.vpython3
  12. .style.yapf
  13. .vpython3
  14. .vscode.vpython3
  16. codereview.settings
  19. OWNERS
  20. PRESUBMIT.py
  21. pyproject.toml
  22. README.md
  23. README.recipes.md
  24. recipe.warnings
  25. recipes.py


Recipes are a domain-specific language (embedded in Python) for specifying sequences of subprocess calls in a cross-platform and testable way.

They allow writing build flows which integrate with the rest of LUCI.

Documentation for the recipe engine (including this file!). Take a look at the user guide for some hints on how to get started. See the implementation details doc for more detailed implementation information about the recipe engine.


  • Sign the Google CLA.
  • Make sure your user.email and user.name are configured in git config.

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

# Get `depot_tools` in $PATH if you don't have it
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git $HOME/src/depot_tools
export PATH="$PATH:$HOME/src/depot_tools"

# Check out the recipe engine repo
git clone https://chromium.googlesource.com/infra/luci/recipes-py $HOME/src/recipes-py

# make your change
cd $HOME/src/recipes-py
git new-branch cool_feature
# hack hack
git commit -a -m "This is awesome"

# This will ask for your Google Account credentials.
git cl upload -s -r joe@example.com
# Wait for approval over email.
# Click "Submit to CQ" button or ask reviewer to do it for you.
# Wait for the change to be tested and landed automatically.

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