[buildbucket-gerrit] simplify _updateBuckets

_updateBuckets combines the logic of computing the final list of builders
and updating the element state.

Simplify _updateBuckets by limiting its responsibility to computing and making
it pure. This simplifies its tests too. Move the responsibility of updating
element state and "canceling" previous operation to _pluginConfigChanged.

Also a minor improvements to comments and filtering out buckets
without builders.

Bug: 813196
Change-Id: I0f466de59a3d5af4940184ecc8da29131999afcf
Reviewed-on: https://chromium-review.googlesource.com/1027207
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
2 files changed
tree: 1bc4d6696d7e0bdc1f7aea56d8cd8033b21992ec
  1. src/
  2. test/
  3. .eslintrc.json
  4. .gitignore
  5. BUILD
  6. codereview.settings
  7. LICENSE
  8. README.md
  9. run-with-prod-data.sh
  10. run-with-testsite.sh
  11. wct.conf.json
README.md

Buildbucket Plugin for Gerrit

Usage

This plugin is configured via the buildbucket.config file present in the repo‘s refs/meta/config ref, as well as the same file in all repositories in the repo’s inheritance chain (up to and including All-Projects).

An example buildbucket.config is below:

[host]
  git = "chromium.googlesource.com"
  gerrit = "chromium-review.googlesource.com"

[bucket "chromium.buildbucket.swarming"]
  builder = infra_presubmit
  builder = infra_linux64
  builder = infra_mac
  builder = infra_win
[bucket "tryserver.infra"]
  builder = Infra Presubmit
  builder = Infra Linux Trusty 64 Tester
  builder = Infra Linux Precise 32 Tester
  builder = Infra Mac Tester
  builder = Infra Win Tester

In the vast majority of cases, the host.git and host.gerrit values are global to the entire host, so that stanza is specified in the All-Projects repo. Buckets and builders, on the other hand, are almost always very repository-specific, and so are only specified in “leaf” repositories which are not in any other repo's inheritance chain.

All changes to buildbucket.config files are instantly reflected. There is no caching period or need to restart the server.

Development

To use with the local testsite

Use the script run-with-testsite.sh; this rebuilds the plugin with bazel, copies it over and restarts the local testsite. Example invocation:

GERRIT_DIR=~/gerrit GERRIT_TESTSITE_DIR=~/testsite ./run-with-testsite.sh

To use with the polygerrit-ui server against live data

Use the script run-with-prod-data.sh; this creates a temporary directory with the plugin source in the expected layout and then invokes polygerrit-ui/run-server.sh. Example invocation:

GERRIT_DIR=~/gerrit ./run-with-prod-data.sh

Testing

# Install dependencies.
npm install -g bower
npm install -g web-component-tester
cd test/
bower install

# Run the tests from the directory root.
cd ../
wct

Note: Testing is disabled for Safari due to this issue.