Bump actions/checkout from 3 to 4 #226

Workflow file for this run

.github/workflows/validate-clusters.yaml at 66ade42

	# This is a GitHub workflow defining a set of jobs with a set of steps. ref:
	# https://docs.github.com/en/actions/learn-github-actions/workflow-syntax-for-github-actions
	#
	# Runs the deployer module to validate clusters. This will both validate
	# cluster.yaml files, any non-encrypted values files for the support chart (if they
	# exist), as well as each hubs passed non-encrypted values files against the Helm
	# charts' values schema.
	#
	name: Validate clusters

	on:
	pull_request:
	branches:
	- master
	paths:
	- "config/clusters/**"
	# Exclude changes to the templates directory from
	# triggering this workflow
	- "!config/clusters/templates/**"
	- "helm-charts/**"
	- "deployer/**"
	- "requirements.txt"
	- ".github/workflows/validate-clusters.yaml"
	push:
	branches:
	- master
	paths:
	- "config/clusters/**"
	# Exclude changes the templates directory from
	# triggering this workflow
	- "!config/clusters/templates"
	- "helm-charts/**"
	- "deployer/**"
	- "requirements.txt"
	- ".github/workflows/validate-clusters.yaml"
	tags:
	- "**"
	workflow_dispatch:

	jobs:
	# This job inspects changed files in order to determine which cluster files
	# should be validated. If helm-chart files change, then all clusters will be
	# validated. The output of this job is a json-encoded dictionary of the
	# cluster names to be validated. This is passed to the
	# validate-helm-charts-values-files job to define a matrix strategy.
	# We also set a continue_workflow job output that determines if either the
	# common or cluster_specific files have changed and whether the next job
	# should be run. We always run the next job if the workflow was manually
	# triggered.
	#
	# === Notes on dorny/paths-filter syntax ===
	# 1. Setting 'list-files: csv' sets an output called '${FILTER_NAME}_files'
	# that we use to determine which specific clusters have file changes
	# 2. The 'added\|modified:' syntax before a path glob pattern means that we
	# only care about files that have been added or modified, not deleted
	# 3. We can also group filters together and hence only need to run the action
	# step once with the 'common' and 'cluster-specific' filters together
	generate-clusters-to-validate:
	runs-on: ubuntu-latest
	permissions:
	pull-requests: read
	outputs:
	continue_workflow: \|
	${{ github.event_name == 'workflow_dispatch' \|\|
	(steps.file_changes.outputs.common == 'true' \|\|
	steps.file_changes.outputs.cluster_specific == 'true') }}
	cluster_matrix: ${{ env.MATRIX \|\| '[]' }}
	# Only run this job if one of the following conditions is true:
	# - The workflow was manually triggered
	# - The event is a push to the master branch
	# - The event is a pull request where the head branch is NOT a dependabot
	# or pre-commit generated branch
	if: \|
	github.event_name == 'workflow_dispatch' \|\|
	(github.event_name == 'push' && contains(github.ref, 'master')) \|\|
	(github.event_name == 'pull_request' && contains(github.head_ref, fromJson('["dependabot", "pre-commit"]')) == false)

	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v4
	with:
	python-version: "3.10"

	- name: Check for file changes
	# Don't run this step when we manually trigger the workflow
	if: github.event_name != 'workflow_dispatch'
	# Action repo: https://github.com/dorny/paths-filter
	# Fork of the repo above that we use: https://github.com/frouioui/paths-filter/tree/main
	# In order to take advantage of https://github.com/dorny/paths-filter/pull/133
	uses: frouioui/paths-filter@main
	id: file_changes
	with:
	token: ""
	list-files: csv
	filters: \|
	common:
	- added\|modified: deployer/**
	- added\|modified: helm-charts/basehub/**
	- added\|modified: helm-charts/daskhub/**
	- added\|modified: helm-charts/support/**
	- added\|modified: requirements.txt
	- added\|modified: .github/workflows/validate-clusters.yaml
	cluster_specific:
	- added\|modified: config/clusters/**

	# Only run this step if there ARE changes under the common filter, OR
	# we have manually triggered the workflow
	- name: Generate a matrix containing all clusters
	if: \|
	github.event_name == 'workflow_dispatch' \|\|
	steps.file_changes.outputs.common == 'true'
	shell: python
	run: \|
	import os
	import json

	# List all cluster folders
	cluster_folders = os.listdir("config/clusters")

	# Construct a matrix of all clusters
	matrix = []
	for cluster in cluster_folders:
	# The `templates` directory contains template yaml configs
	# and doesn't represent a "real" cluster.
	# This is why we need to exclude it from the list of clusters
	# and hence all workflows, otherwise it will cause them to fail.
	if cluster != "templates":
	matrix.append({"cluster_name": cluster})

	# Write matrix to the GITHUB_ENV file in GitHub Actions
	env_file = os.getenv("GITHUB_ENV")
	with open(env_file, "a") as f:
	# Explicitly dump these as JSON, as that is what they are read as
	# General python object syntax sometimes works but sometimes does
	# not - for example, single quotes are not valid in JSON.
	f.write(f"MATRIX={json.dumps(matrix)}")

	# Only run this step if there are NO changes under the common filter,
	# but ARE changes under the cluster_specific filter, AND we have not
	# manually triggered the workflow
	- name: Generate a matrix containing only clusters that have changes
	if: \|
	github.event_name != 'workflow_dispatch' &&
	steps.file_changes.outputs.common != 'true' &&
	steps.file_changes.outputs.cluster_specific == 'true'
	shell: python
	run: \|
	import os
	import json
	from pathlib import Path

	# Consume list of changed cluster files and convert to list by splitting
	# on the comma character
	cluster_files = r"""${{ steps.file_changes.outputs.cluster_specific_files }}"""
	cluster_files = cluster_files.split(",")
	assert isinstance(cluster_files, list)

	# Extract the cluster names from the paths of the changed files
	clusters = []
	for cluster_file in cluster_files:
	clusters.append(Path(cluster_file).parent.stem)

	# Ensure each cluster name only appears once by transforming the list
	# into a set
	clusters = set(clusters)

	# Construct a matrix of clusters that have changes
	matrix = []
	for cluster in clusters:
	matrix.append({"cluster_name": cluster})

	# Write the matrix to the GITHUB_ENV file in GitHub Actions
	env_file = os.getenv("GITHUB_ENV")
	with open(env_file, "a") as f:
	# Explicitly dump these as JSON, as that is what they are read as
	# General python object syntax sometimes works but sometimes does
	# not - for example, single quotes are not valid in JSON.
	f.write(f"MATRIX={json.dumps(matrix)}")

	# This job runs the 'deployer validate' subcommand across a matrix of
	# cluster names.
	#
	# It relies on the generate-clusters-to-validate job to have completed and
	# set the following outputs:
	# - continue_workflow (bool): This job will only run if this output is set to
	# 'true'. The value of this output is calculated based on detected file
	# changes.
	# - cluster_matrix (json obj): A matrix of cluster names that require validation
	# due to detected changes. This job will not run if this output is empty,
	# i.e., '[]'.
	#
	validate-helm-charts-values-files:
	runs-on: ubuntu-latest
	needs: [generate-clusters-to-validate]
	if: \|
	needs.generate-clusters-to-validate.outputs.continue_workflow &&
	(needs.generate-clusters-to-validate.outputs.cluster_matrix != '[]')
	strategy:
	fail-fast: false
	matrix:
	jobs: ${{ fromJson(needs.generate-clusters-to-validate.outputs.cluster_matrix) }}

	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v4
	with:
	python-version: "3.10"

	- name: Install deployer module dependencies
	run: \|
	pip install --editable .

	- name: "Validate cluster: ${{ matrix.jobs.cluster_name }}"
	env:
	TERM: xterm
	run: \|
	deployer validate ${{ matrix.jobs.cluster_name }}

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Bump actions/checkout from 3 to 4 #226

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Bump actions/checkout from 3 to 4 #226

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Workflow file for this run