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azure-preview-env-deploy.yml
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name: Azure - Deploy Preview Environment (private)
# NOTE! This is specifically and only for github/docs-internal.
# **What it does**: Build and deploy an Azure preview environment for this PR in github/docs-internal
# **Why we have it**: It's our preview environment deploy mechanism, to docs-internal repo
# **Who does it impact**: Writ-access contributors.
on:
# The advantage of 'pull_request' over 'pull_request_target' is that we
# can make changes to this file and test them in a pull request, instead
# of relying on landing it in 'main' first.
# From a security point of view, its arguably safer this way because
# unlike 'pull_request_target', these only have secrets if the pull
# request creator has permission to access secrets.
pull_request_target:
merge_group:
workflow_dispatch:
inputs:
PR_NUMBER:
description: 'PR Number'
type: string
required: true
COMMIT_REF:
description: 'The commit SHA to build'
type: string
required: true
WITH_TRANSLATIONS:
description: 'With translations'
required: true
type: boolean
permissions:
contents: read
deployments: write
# This allows one deploy workflow to interrupt another
concurrency:
group: 'preview-env @ ${{ github.head_ref || github.run_id }} for ${{ github.event.number || inputs.PR_NUMBER }}'
cancel-in-progress: true
jobs:
build-and-deploy-azure-preview:
name: Build and deploy Azure preview environment
runs-on: ubuntu-latest
# Ensure this is actually a pull request and not a merge group
# If its a merge group, report success without doing anything
# See https://bit.ly/3qB9nZW > If a job in a workflow is skipped due to a conditional, it will report its status as "Success".
if: |
(
(github.event.pull_request.head.sha || inputs.COMMIT_REF)
&& (github.event.number || inputs.PR_NUMBER || github.run_id)
)
&& github.repository == 'github/docs-internal'
timeout-minutes: 15
environment:
name: preview-env-${{ github.event.number }}
# The environment variable is computer later in this job in
# the "Get preview app info" step.
# That script sets environment variables which is used by Actions
# to link a PR to a list of environments later.
url: ${{ env.APP_URL }}
env:
PR_NUMBER: ${{ github.event.number || inputs.PR_NUMBER || github.run_id }}
COMMIT_REF: ${{ github.event.pull_request.head.sha || inputs.COMMIT_REF }}
BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
NONPROD_REGISTRY_USERNAME: ghdocsinternal
steps:
- name: 'Az CLI login'
uses: azure/login@6c251865b4e6290e7b78be643ea2d005bc51f69a # pin @v2
with:
creds: ${{ secrets.NONPROD_AZURE_CREDENTIALS }}
- name: 'Docker login'
uses: azure/docker-login@15c4aadf093404726ab2ff205b2cdd33fa6d054c
with:
login-server: ${{ secrets.NONPROD_REGISTRY_SERVER }}
username: ${{ env.NONPROD_REGISTRY_USERNAME }}
password: ${{ secrets.NONPROD_REGISTRY_PASSWORD }}
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@988b5a0280414f521da01fcc63a27aeeb4b104db
- name: Check out PR code
uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
with:
ref: ${{ env.COMMIT_REF }}
# To prevent issues with cloning early access content later
persist-credentials: 'false'
- name: Get preview app info
env:
APP_NAME_SEED: ${{ secrets.PREVIEW_ENV_NAME_SEED }}
run: src/workflows/get-preview-app-info.sh
- name: 'Set env vars'
run: |
# Image tag is unique to each workflow run so that it always triggers a new deployment
echo "DOCKER_IMAGE=${{ secrets.NONPROD_REGISTRY_SERVER }}/${IMAGE_REPO}:${{ env.COMMIT_REF }}-${{ github.run_number }}-${{ github.run_attempt }}" >> $GITHUB_ENV
- name: Determine which docs-early-access branch to clone
id: 'check-early-access'
uses: actions/github-script@e69ef5462fd455e02edcaf4dd7708eda96b9eda0
env:
BRANCH_NAME: ${{ env.BRANCH_NAME }}
with:
github-token: ${{ secrets.DOCS_BOT_PAT_READPUBLICKEY }}
result-encoding: string
script: |
const { BRANCH_NAME } = process.env
try {
const { status } = await github.request('GET /repos/{owner}/{repo}/branches/{branch}', {
owner: 'github',
repo: 'docs-early-access',
branch: BRANCH_NAME,
})
if (status !== 200) {
throw new Error('Received non-200 response from branch GET request')
}
console.log(`Using docs-early-access branch '${BRANCH_NAME}'`)
return BRANCH_NAME
} catch (e) {
console.log(`Failed to get docs-early-access branch '${BRANCH_NAME}', 'main' will be used instead.`)
return 'main'
}
- name: Clone docs-early-access
uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
with:
repository: github/docs-early-access
token: ${{ secrets.DOCS_BOT_PAT_READPUBLICKEY }}
path: docs-early-access
ref: ${{ steps.check-early-access.outputs.result }}
- name: Merge docs-early-access repo's folders
run: src/early-access/scripts/merge-early-access.sh
- name: Determine if we should include translations?
uses: actions/github-script@e69ef5462fd455e02edcaf4dd7708eda96b9eda0
id: with-translations
with:
script: |
if (process.env.IS_INTERNAL_BUILD !== 'true') return false
if (context.eventName === "workflow_dispatch") {
return context.payload.inputs.WITH_TRANSLATIONS === 'true'
}
// This works for pull_request_target too
if (context.payload.pull_request?.labels) {
return context.payload.pull_request.labels.map(label => label.name).includes('preview-with-translations')
}
return false
- if: ${{ steps.with-translations.outputs.result == 'true' }}
uses: ./.github/actions/clone-translations
with:
token: ${{ secrets.DOCS_BOT_PAT_READPUBLICKEY }}
- uses: ./.github/actions/warmup-remotejson-cache
with:
restore-only: true
- uses: ./.github/actions/precompute-pageinfo
with:
restore-only: true
# In addition to making the final image smaller, we also save time by not sending unnecessary files to the docker build context
- name: 'Prune for preview env'
run: src/workflows/prune-for-preview-env.sh
- name: 'Build and push image'
uses: docker/build-push-action@16ebe778df0e7752d2cfcbd924afdbbd89c1a755
with:
context: .
push: true
target: ${{ steps.with-translations.outputs.result == 'true' && 'production' || 'preview' }}
tags: ${{ env.DOCKER_IMAGE }}
# we only pull the `main` cache image
cache-from: type=registry,ref=${{ secrets.NONPROD_REGISTRY_SERVER }}/${{ github.repository }}:main-preview
# `main-docker-cache.yml` handles updating the remote cache so we don't pollute it with PR specific code
cache-to: ''
build-args: |
BUILD_SHA=${{ env.COMMIT_REF }}
# Succeed despite any non-zero exit code (e.g. if there is no deployment to cancel)
- name: 'Cancel any existing deployments for this PR'
run: |
az deployment group cancel --name ${{ env.DEPLOYMENT_NAME }} -g ${{ secrets.PREVIEW_ENV_RESOURCE_GROUP }} || true
# Deploy ARM template is idempotent
# Note: once the resources exist the image tag must change for a new deployment to occur (the image tag includes workflow run number, run attempt, as well as sha)
- name: Run ARM deploy
uses: azure/arm-deploy@a1361c2c2cd398621955b16ca32e01c65ea340f5
with:
scope: resourcegroup
resourceGroupName: ${{ secrets.PREVIEW_ENV_RESOURCE_GROUP }}
subscriptionId: ${{ secrets.NONPROD_SUBSCRIPTION_ID }}
template: ./src/workflows/azure-preview-env-template.json
deploymentName: ${{ env.DEPLOYMENT_NAME }}
parameters: appName="${{ env.APP_NAME }}"
containerImage="${{ env.DOCKER_IMAGE }}"
dockerRegistryUrl="${{ secrets.NONPROD_REGISTRY_SERVER }}"
dockerRegistryUsername="${{ env.NONPROD_REGISTRY_USERNAME }}"
dockerRegistryPassword="${{ secrets.NONPROD_REGISTRY_PASSWORD }}"
- name: Check that it can be reached
# This introduces a necessary delay. Because the preview evironment
# URL is announced to the pull request as soon as all the steps
# finish, what sometimes happens is that a viewer of the PR clicks
# that link too fast and are confronted with a broken page.
# It's because there's a delay between the `azure/arm-deploy`
# and when the server is actually started and can receive and
# process requests.
# By introducing a slight "delay" here we avoid announcing a
# preview environment URL that isn't actually working just yet.
# Note the use of `--fail`. It which means that if it actually
# did connect but the error code was >=400, the command will fail.
# The `--fail --retry N` combination means that a 4xx response
# code will exit immediately but a 5xx will exhaust the retries.
run: curl --fail --retry-connrefused --retry 5 -I ${{ env.APP_URL }}