Fix part of #5343: Introduce new CI workflow for Code Coverage #9

Workflow file for this run

.github/workflows/code_coverage.yml at 7c32b5e

	# Contains jobs corresponding to code coverage.

	name: Code Coverage

	# Controls when the action will run. Triggers the workflow on pull request
	# events or push events in the develop branch.
	on:
	workflow_dispatch:
	pull_request:
	push:
	branches:
	# Push events on develop branch
	- develop

	jobs:
	compute_changed_files:
	name: Compute changed files
	runs-on: ubuntu-20.04
	outputs:
	matrix: ${{ steps.compute-file-matrix.outputs.matrix }}
	can_skip_tests: ${{ steps.compute-file-matrix.outputs.can_skip_files }}
	env:
	CACHE_DIRECTORY: ~/.bazel_cache
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0

	- name: Set up Bazel
	uses: abhinavsingh/setup-bazel@v3
	with:
	version: 6.5.0

	- uses: actions/cache@v2
	id: scripts_cache
	with:
	path: ${{ env.CACHE_DIRECTORY }}
	key: ${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-scripts-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-scripts-
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-

	# This check is needed to ensure that Bazel's unbounded cache growth doesn't result in a
	# situation where the cache never updates (e.g. due to exceeding GitHub's cache size limit)
	# thereby only ever using the last successful cache version. This solution will result in a
	# few slower CI actions around the time cache is detected to be too large, but it should
	# incrementally improve thereafter.
	- name: Ensure cache size
	env:
	BAZEL_CACHE_DIR: ${{ env.CACHE_DIRECTORY }}
	run: \|
	# See https://stackoverflow.com/a/27485157 for reference.
	EXPANDED_BAZEL_CACHE_PATH="${BAZEL_CACHE_DIR/#\~/$HOME}"
	CACHE_SIZE_MB=$(du -smc $EXPANDED_BAZEL_CACHE_PATH \| grep total \| cut -f1)
	echo "Total size of Bazel cache (rounded up to MBs): $CACHE_SIZE_MB"
	# Use a 4.5GB threshold since actions/cache compresses the results, and Bazel caches seem
	# to only increase by a few hundred megabytes across changes for unrelated branches. This
	# is also a reasonable upper-bound (local tests as of 2021-03-31 suggest that a full build
	# of the codebase (e.g. //...) from scratch only requires a ~2.1GB uncompressed/~900MB
	# compressed cache).
	if [[ "$CACHE_SIZE_MB" -gt 4500 ]]; then
	echo "Cache exceeds cut-off; resetting it (will result in a slow build)"
	rm -rf $EXPANDED_BAZEL_CACHE_PATH
	fi

	- name: Configure Bazel to use a local cache
	env:
	BAZEL_CACHE_DIR: ${{ env.CACHE_DIRECTORY }}
	run: \|
	EXPANDED_BAZEL_CACHE_PATH="${BAZEL_CACHE_DIR/#\~/$HOME}"
	echo "Using $EXPANDED_BAZEL_CACHE_PATH as Bazel's cache path"
	echo "build --disk_cache=$EXPANDED_BAZEL_CACHE_PATH" >> $HOME/.bazelrc
	shell: bash

	- name: Compute file matrix
	id: compute-file-matrix
	env:
	compute_all_files: ${{ contains(github.event.pull_request.title, '[RunAllTests]') }}
	# See: https://docs.github.com/en/webhooks-and-events/webhooks/webhook-events-and-payloads#pull_request. Defer to origin/develop outside a PR (such as develop's main CI runs).
	base_commit_hash: ${{ github.event.pull_request.base.sha \|\| 'origin/develop' }}
	# https://unix.stackexchange.com/a/338124 for reference on creating a JSON-friendly
	# comma-separated list of test targets for the matrix.
	run: \|
	bazel run //scripts:compute_changed_files -- $(pwd) $(pwd)/changed_files.log $base_commit_hash compute_all_files=$compute_all_files
	FILE_BUCKET_LIST=$(cat ./changed_files.log \| sed 's/^\\|$/"/g' \| paste -sd, -)
	echo "Changed files (note that this might be all files if configured to run all or on the develop branch): $FILE_BUCKET_LIST"
	echo "::set-output name=matrix::{\"changed-files-bucket-base64-encoded-shard\":[$FILE_BUCKET_LIST]}"
	if [[ ! -z "$FILE_BUCKET_LIST" ]]; then
	echo "::set-output name=can_skip_files::false"
	else
	echo "::set-output name=can_skip_files::true"
	echo "No files are affected by this change. If this is wrong, you can add '[RunAllTests]' to the PR title to force a run."
	fi

	code_coverage_run:
	name: Run Code Coverage
	needs: compute_changed_files
	if: ${{ needs.compute_changed_files.outputs.can_skip_tests != 'true' }}
	runs-on: ubuntu-20.04
	strategy:
	fail-fast: false
	max-parallel: 10
	matrix: ${{ fromJson(needs.compute_changed_files.outputs.matrix) }}
	env:
	ENABLE_CACHING: false
	CACHE_DIRECTORY: ~/.bazel_cache
	steps:
	- uses: actions/checkout@v2

	- name: Set up JDK 11
	uses: actions/setup-java@v1
	with:
	java-version: 11

	- name: Set up Bazel
	uses: abhinavsingh/setup-bazel@v3
	with:
	version: 6.5.0

	- uses: actions/cache@v2
	id: scripts_cache
	with:
	path: ${{ env.CACHE_DIRECTORY }}
	key: ${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-scripts-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-scripts-
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-

	- name: Set up build environment
	uses: ./.github/actions/set-up-android-bazel-build-environment

	- name: Configure Bazel to use a local cache (for scripts)
	env:
	BAZEL_CACHE_DIR: ${{ env.CACHE_DIRECTORY }}
	run: \|
	EXPANDED_BAZEL_CACHE_PATH="${BAZEL_CACHE_DIR/#\~/$HOME}"
	echo "Using $EXPANDED_BAZEL_CACHE_PATH as Bazel's cache path"
	echo "build --disk_cache=$EXPANDED_BAZEL_CACHE_PATH" >> $HOME/.bazelrc
	shell: bash

	- name: Extract caching bucket
	env:
	CHANGED_FILESS_BUCKET_BASE64_ENCODED_SHARD: ${{ matrix.changed-files-bucket-base64-encoded-shard }}
	run: \|
	# See https://stackoverflow.com/a/29903172 for cut logic. This is needed to remove the
	# user-friendly shard prefix from the matrix value.
	CHANGED_FILES_BUCKET_BASE64=$(echo "$CHANGED_FILESS_BUCKET_BASE64_ENCODED_SHARD" \| cut -d ";" -f 2)
	bazel run //scripts:retrieve_changed_files -- $CHANGED_FILES_BUCKET_BASE64 $(pwd)/file_bucket_name $(pwd)/changed_files
	FILE_CATEGORY=$(cat ./file_bucket_name)
	CHANGED_FILES=$(cat ./changed_files)
	echo "File category: $FILE_CATEGORY"
	echo "Changed Files: $CHANGED_FILES"
	echo "FILE_CACHING_BUCKET=$FILE_CATEGORY" >> $GITHUB_ENV
	echo "CHANGED_FILES=$CHANGED_FILES" >> $GITHUB_ENV

	# For reference on this & the later cache actions, see:
	# https://github.com/actions/cache/issues/239#issuecomment-606950711 &
	# https://github.com/actions/cache/issues/109#issuecomment-558771281. Note that these work
	# with Bazel since Bazel can share the most recent cache from an unrelated build and still
	# benefit from incremental build performance (assuming that actions/cache aggressively removes
	# older caches due to the 5GB cache limit size & Bazel's large cache size).
	- uses: actions/cache@v2
	id: test_cache
	with:
	path: ${{ env.CACHE_DIRECTORY }}
	key: ${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-tests-${{ env.FILE_CACHING_BUCKET }}-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-tests-${{ env.FILE_CACHING_BUCKET }}-
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-tests-
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-binary-
	${{ runner.os }}-${{ env.CACHE_DIRECTORY }}-bazel-

	# This check is needed to ensure that Bazel's unbounded cache growth doesn't result in a
	# situation where the cache never updates (e.g. due to exceeding GitHub's cache size limit)
	# thereby only ever using the last successful cache version. This solution will result in a
	# few slower CI actions around the time cache is detected to be too large, but it should
	# incrementally improve thereafter.
	- name: Ensure cache size
	env:
	BAZEL_CACHE_DIR: ${{ env.CACHE_DIRECTORY }}
	run: \|
	# See https://stackoverflow.com/a/27485157 for reference.
	EXPANDED_BAZEL_CACHE_PATH="${BAZEL_CACHE_DIR/#\~/$HOME}"
	CACHE_SIZE_MB=$(du -smc $EXPANDED_BAZEL_CACHE_PATH \| grep total \| cut -f1)
	echo "Total size of Bazel cache (rounded up to MBs): $CACHE_SIZE_MB"
	# Use a 4.5GB threshold since actions/cache compresses the results, and Bazel caches seem
	# to only increase by a few hundred megabytes across changes for unrelated branches. This
	# is also a reasonable upper-bound (local tests as of 2021-03-31 suggest that a full build
	# of the codebase (e.g. //...) from scratch only requires a ~2.1GB uncompressed/~900MB
	# compressed cache).
	if [[ "$CACHE_SIZE_MB" -gt 4500 ]]; then
	echo "Cache exceeds cut-off; resetting it (will result in a slow build)"
	rm -rf $EXPANDED_BAZEL_CACHE_PATH
	fi

	- name: Configure Bazel to use a local cache
	env:
	BAZEL_CACHE_DIR: ${{ env.CACHE_DIRECTORY }}
	run: \|
	EXPANDED_BAZEL_CACHE_PATH="${BAZEL_CACHE_DIR/#\~/$HOME}"
	echo "Using $EXPANDED_BAZEL_CACHE_PATH as Bazel's cache path"
	echo "build --disk_cache=$EXPANDED_BAZEL_CACHE_PATH" >> $HOME/.bazelrc
	shell: bash

	# See explanation in bazel_build_app for how this is installed.
	- name: Install git-secret (non-fork only)
	if: ${{ env.ENABLE_CACHING == 'true' && ((github.ref == 'refs/heads/develop' && github.event_name == 'push') \|\| (github.event.pull_request.head.repo.full_name == 'oppia/oppia-android')) }}
	shell: bash
	run: \|
	cd $HOME
	mkdir -p $HOME/gitsecret
	git clone https://github.com/sobolevn/git-secret.git git-secret
	cd git-secret && make build
	PREFIX="$HOME/gitsecret" make install
	echo "$HOME/gitsecret" >> $GITHUB_PATH
	echo "$HOME/gitsecret/bin" >> $GITHUB_PATH

	- name: Decrypt secrets (non-fork only)
	if: ${{ env.ENABLE_CACHING == 'true' && ((github.ref == 'refs/heads/develop' && github.event_name == 'push') \|\| (github.event.pull_request.head.repo.full_name == 'oppia/oppia-android')) }}
	env:
	GIT_SECRET_GPG_PRIVATE_KEY: ${{ secrets.GIT_SECRET_GPG_PRIVATE_KEY }}
	run: \|
	cd $HOME
	# NOTE TO DEVELOPERS: Make sure to never print this key directly to stdout!
	echo $GIT_SECRET_GPG_PRIVATE_KEY \| base64 --decode > ./git_secret_private_key.gpg
	gpg --import ./git_secret_private_key.gpg
	cd $GITHUB_WORKSPACE
	git secret reveal

	# # See https://www.cyberciti.biz/faq/unix-for-loop-1-to-10/ for for-loop reference.
	# - name: Build Oppia Tests (with caching, non-fork only)
	# if: ${{ env.ENABLE_CACHING == 'true' && ((github.ref == 'refs/heads/develop' && github.event_name == 'push') \|\| (github.event.pull_request.head.repo.full_name == 'oppia/oppia-android')) }}
	# env:
	# BAZEL_REMOTE_CACHE_URL: ${{ secrets.BAZEL_REMOTE_CACHE_URL }}
	# BAZEL_TEST_TARGETS: ${{ env.BAZEL_TEST_TARGETS }}
	# run: \|
	# # Attempt to build 5 times in case there are flaky builds.
	# # TODO(#3759): Remove this once there are no longer app test build failures.
	# i=0
	# # Disable exit-on-first-failure.
	# set +e
	# while [ $i -ne 5 ]; do
	# i=$(( $i+1 ))
	# echo "Attempt $i/5 to build test targets"
	# bazel build --keep_going --remote_http_cache=$BAZEL_REMOTE_CACHE_URL --google_credentials=./config/oppia-dev-workflow-remote-cache-credentials.json -- $BAZEL_TEST_TARGETS
	# done
	# # Capture the error code of the final command run (which should be a success if there isn't a real build failure).
	# last_error_code=$?
	# # Reenable exit-on-first-failure.
	# set -e
	# # Exit only if the most recent exit was a failure (by using a subshell).
	# (exit $last_error_code)
	#
	# - name: Build Oppia Tests (without caching, or on a fork)
	# if: ${{ env.ENABLE_CACHING == 'false' \|\| ((github.ref != 'refs/heads/develop' \|\| github.event_name != 'push') && (github.event.pull_request.head.repo.full_name != 'oppia/oppia-android')) }}
	# env:
	# BAZEL_TEST_TARGETS: ${{ env.BAZEL_TEST_TARGETS }}
	# run: \|
	# # Attempt to build 5 times in case there are flaky builds.
	# # TODO(#3759): Remove this once there are no longer app test build failures.
	# i=0
	# # Disable exit-on-first-failure.
	# set +e
	# while [ $i -ne 5 ]; do
	# i=$(( $i+1 ))
	# echo "Attempt $i/5 to build test targets"
	# bazel build --keep_going -- $BAZEL_TEST_TARGETS
	# done
	# # Capture the error code of the final command run (which should be a success if there isn't a real build failure).
	# last_error_code=$?
	# # Reenable exit-on-first-failure.
	# set -e
	# # Exit only if the most recent exit was a failure (by using a subshell).
	# (exit $last_error_code)
	#
	- name: Run Oppia Coverage (with caching, non-fork only)
	if: ${{ env.ENABLE_CACHING == 'true' && ((github.ref == 'refs/heads/develop' && github.event_name == 'push') \|\| (github.event.pull_request.head.repo.full_name == 'oppia/oppia-android')) }}
	env:
	BAZEL_REMOTE_CACHE_URL: ${{ secrets.BAZEL_REMOTE_CACHE_URL }}
	CHANGED_FILES: ${{ env.CHANGED_FILES }}
	run: \|
	# Attempt to build 5 times in case there are flaky builds.
	# TODO(#3970): Remove this once there are no longer app test build failures.
	i=0
	# Disable exit-on-first-failure.
	set +e
	while [ $i -ne 5 ]; do
	i=$(( $i+1 ))
	echo "Attempt $i/5 to run test targets"
	bazel run //scripts:run_coverage -- $(pwd) $CHANGED_FILES --format=MARKDOWN
	done
	# Capture the error code of the final command run (which should be a success if there isn't a real build failure).
	last_error_code=$?
	# Reenable exit-on-first-failure.
	set -e
	# Exit only if the most recent exit was a failure (by using a subshell).
	(exit $last_error_code)

	- name: Run Oppia Coverage (without caching, or on a fork)
	if: ${{ env.ENABLE_CACHING == 'false' \|\| ((github.ref != 'refs/heads/develop' \|\| github.event_name != 'push') && (github.event.pull_request.head.repo.full_name != 'oppia/oppia-android')) }}
	env:
	BAZEL_TEST_TARGETS: ${{ env.BAZEL_TEST_TARGETS }}
	run: \|
	# Attempt to build 5 times in case there are flaky builds.
	# TODO(#3970): Remove this once there are no longer app test build failures.
	i=0
	# Disable exit-on-first-failure.
	set +e
	while [ $i -ne 5 ]; do
	i=$(( $i+1 ))
	echo "Attempt $i/5 to run test targets"
	bazel run //scripts:run_coverage -- $(pwd) $CHANGED_FILES --format=MARKDOWN
	done
	# Capture the error code of the final command run (which should be a success if there isn't a real build failure).
	last_error_code=$?
	# Reenable exit-on-first-failure.
	set -e
	# Exit only if the most recent exit was a failure (by using a subshell).
	(exit $last_error_code)

	# Reference: https://github.community/t/127354/7.
	check_coverage_results:
	name: Check Code Coverage Results
	needs: [ compute_changed_files, code_coverage_run ]
	if: ${{ always() }}
	runs-on: ubuntu-20.04
	steps:
	- name: Check coverages passed
	if: ${{ needs.compute_changed_files.outputs.can_skip_tests != 'true' && needs.code_coverage_run.result != 'success' }}
	run: exit 1

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Fix part of #5343: Introduce new CI workflow for Code Coverage #9

Workflow file

Fix part of #5343: Introduce new CI workflow for Code Coverage #9

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Workflow file for this run