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ci.yaml
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name: CI
# Controls when the action will run.
on:
# Triggers the workflow on push or pull request events but only for the main branch
push:
branches: [main]
pull_request:
branches: [main]
# Allows you to run this workflow manually from the Actions tab
workflow_dispatch:
jobs:
# matrix-prep-* steps dynamically generate a bit of JSON depending on whether our action has
# access to repository secrets. When running on a pull_request from a fork, the author is
# untrusted so the secret will be absent. Insanely complex for how simple this requirement is...
# inspired from
# https://stackoverflow.com/questions/65384420/how-to-make-a-github-action-matrix-element-conditional
matrix-prep-bazelversion:
# Prepares the 'bazelversion' axis of the test matrix
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- id: bazel_6
run: echo "bazelversion=$(head -n 1 .bazelversion)" >> $GITHUB_OUTPUT
- id: bazel_5
run: echo "bazelversion=5.3.2" >> $GITHUB_OUTPUT
outputs:
# Will look like ["<version from .bazelversion>", "5.3.2"]
bazelversions: ${{ toJSON(steps.*.outputs.bazelversion) }}
matrix-prep-os:
# Prepares the 'os' axis of the test matrix
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- id: linux
run: echo "os=ubuntu-latest" >> $GITHUB_OUTPUT
- id: macos
run: echo "os=macos-latest" >> $GITHUB_OUTPUT
# Only run on main branch (not PRs) to minimize macOS minutes (billed at 10X)
# https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions#included-storage-and-minutes
if: ${{ github.ref == 'refs/heads/main' }}
- id: windows
run: echo "os=windows-latest" >> $GITHUB_OUTPUT
# Only run on main branch (or PR branches that contain 'windows') to minimize Windows minutes (billed at 2X)
# https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions#included-storage-and-minutes
if: ${{ github.ref == 'refs/heads/main' || contains(github.head_ref, 'windows') }}
outputs:
# Will look like ["ubuntu-latest", "macos-latest", "windows-latest"]
os: ${{ toJSON(steps.*.outputs.os) }}
test:
# The type of runner that the job will run on
runs-on: ${{ matrix.os }}
needs:
- matrix-prep-bazelversion
- matrix-prep-os
strategy:
fail-fast: false
matrix:
os: ${{ fromJSON(needs.matrix-prep-os.outputs.os) }}
bazelversion: ${{ fromJSON(needs.matrix-prep-bazelversion.outputs.bazelversions) }}
bzlmodEnabled: [true, false]
folder:
- '.'
- 'e2e/smoke'
- 'e2e/npm-links'
- 'e2e/sourcemaps'
- 'e2e/tsconfig'
- 'e2e/bundle'
exclude:
# Don't test macos with Bazel 5 to minimize macOS minutes (billed at 10X)
# https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions#included-storage-and-minutes
- os: macos-latest
bazelversion: 5.3.2
# Don't test bzlmod with Bazel 5 (not supported)
- bazelversion: 5.3.2
bzlmodEnabled: true
# Don't test Windows with Bazel 5 to minimize Windows minutes (billed at 2X)
- bazelversion: 5.3.2
os: windows-latest
# Don't run the root workspace with Bazel 5, it uses bazel-lib 2.0 which doesn't work.
- bazelversion: 5.3.2
folder: '.'
# Steps represent a sequence of tasks that will be executed as part of the job
steps:
# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
- uses: actions/checkout@v3
# Cache build and external artifacts so that the next ci build is incremental.
# Because github action caches cannot be updated after a build, we need to
# store the contents of each build in a unique cache key, then fall back to loading
# it on the next ci run. We use hashFiles(...) in the key and restore-keys- with
# the prefix to load the most recent cache for the branch on a cache miss. You
# should customize the contents of hashFiles to capture any bazel input sources,
# although this doesn't need to be perfect. If none of the input sources change
# then a cache hit will load an existing cache and bazel won't have to do any work.
# In the case of a cache miss, you want the fallback cache to contain most of the
# previously built artifacts to minimize build time. The more precise you are with
# hashFiles sources the less work bazel will have to do.
- name: Mount bazel caches
uses: actions/cache@v3
with:
path: |
"~/.cache/bazel"
"~/.cache/bazel-repo"
key: bazel-cache-${{ hashFiles('**/BUILD.bazel', '**/*.bzl', 'WORKSPACE') }}
restore-keys: bazel-cache-
- name: Configure Bazel version
working-directory: ${{ matrix.folder }}
# Overwrite the .bazelversion instead of using USE_BAZEL_VERSION so that Bazelisk
# still bootstraps Aspect CLI from configuration in .bazeliskrc. Aspect CLI will
# then use .bazelversion to determine which Bazel version to use
run: echo "${{ matrix.bazelversion }}" > .bazelversion
- name: Set bzlmod flag
# Store the bzlmod flag that we add to the test command below
# only when we're running bzlmod in our test matrix.
id: set_bzlmod_flag
if: matrix.bzlmodEnabled
run: echo "bzlmod_flag=--config=bzlmod" >> $GITHUB_OUTPUT
- name: bazel test //...
env:
# Bazelisk will download bazel to here, ensure it is cached between runs.
XDG_CACHE_HOME: ~/.cache/bazel-repo
working-directory: ${{ matrix.folder }}
run: |
bazel --bazelrc=${{ github.workspace }}/.github/workflows/ci.bazelrc --bazelrc=.bazelrc test ${{ steps.set_bzlmod_flag.outputs.bzlmod_flag }} //...