Canary EAS Rollout workflow (using PR label)

eas-rollout.yml

name: EAS Rollout

on:
  pull_request:
    types: [labeled, unlabeled, closed, synchronize]

permissions:
  pull-requests: write
  contents: read

jobs:
  rollout-start:
    if:
      | # Check if rollout label was added to PR or if new commit was pushed to PR with rollout label
      (github.event.action == 'labeled' &&
      github.event.label.name == 'rollout') ||
      (github.event.action == 'synchronize' &&
      contains(github.event.pull_request.labels.*.name, 'rollout'))
    runs-on: ubuntu-latest
    concurrency:
      group: rollout-${{ github.event.pull_request.number }}
      cancel-in-progress: false

    steps:
      - name: 🏗 Setup repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # 👈 Required to retrieve git history

      - name: 🏗 Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: 'npm' # or 'yarn', 'pnpm' depending on your package manager

      - name: 📦 Install dependencies
        run: npm ci # or yarn install, pnpm install

      - name: 🏗 Setup Expo
        uses: expo/expo-github-action@v8
        with:
          eas-version: latest
          token: ${{ secrets.EXPO_TOKEN }}

      - name: 🏗 Setup Config
        id: config
        run: | # Modify this section to match your app's config
          RUNTIME=$(npx expo config --json|jq -r '.runtimeVersion')
          CHANNEL=$(jq -r '.build.production.channel' < eas.json)
          echo "runtime=$RUNTIME" >> $GITHUB_OUTPUT
          echo "channel=$CHANNEL" >> $GITHUB_OUTPUT
          echo "branch=rollout-pr-${{ github.event.number }}" >> $GITHUB_OUTPUT
          echo "pr=${{ github.event.number }}" >> $GITHUB_OUTPUT

      - name: 🚀 EAS Update
        run: |
          eas branch:create ${{ steps.config.outputs.branch }} --non-interactive || true
          eas update \
            --branch=${{ steps.config.outputs.branch }} \
            --message "Canary rollout for PR #${{ steps.config.outputs.pr }}"
        env:
          EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}

      - name: 🚀 Start rollout
        id: rollout
        continue-on-error: true
        run: |
          BRANCH=${{ steps.config.outputs.branch }}
          CHANNEL=${{ steps.config.outputs.channel }}
          RUNTIME=${{ steps.config.outputs.runtime }}

          echo "🔍 Checking if rollout already exists on channel: $CHANNEL"

          OUT=$(eas channel:rollout "$CHANNEL" \
            --action=view \
            --json \
            --non-interactive || echo "{}")

          CURRENT_BRANCH=$(echo "$OUT" | jq -r '.currentRolloutInfo.rolledOutBranch.name // empty')

          if [ "$CURRENT_BRANCH" = "$BRANCH" ]; then
            echo "✅ Rollout already active for this PR branch ($BRANCH)"
            echo "created=false" >> $GITHUB_OUTPUT
            exit 0
          fi

          if [ -n "$CURRENT_BRANCH" ]; then
            echo "🚫 Rollout already active for another branch ($CURRENT_BRANCH)"
            echo "created=failed" >> $GITHUB_OUTPUT
            exit 1
          fi

          echo "🚀 Creating rollout for $BRANCH"
          eas channel:rollout "$CHANNEL" \
            --action=create \
            --branch="$BRANCH" \
            --percent=5 \
            --runtime-version="$RUNTIME" \
            --non-interactive

          echo "created=true" >> $GITHUB_OUTPUT

        env:
          EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}

      - name: 💬 Comment status on success
        uses: marocchino/sticky-pull-request-comment@v2
        if: steps.rollout.outcome == 'success' && steps.rollout.outputs.created == 'true'
        with:
          number: ${{ steps.config.outputs.pr }}
          header: 'Expo Canary Rollout Status'
          message: |
            # ✅ Rollout Started
            **Runtime:** `${{ steps.config.outputs.runtime }}`
            **Channel:** `${{ steps.config.outputs.channel }}`
            **Branch:** `${{ steps.config.outputs.branch }}`
            **Rollout status:** `${{ steps.rollout.outcome }}`

            PR #${{ steps.config.outputs.pr }} is now being rolled out to 5% of users on production.
            Remove the label manually or close the PR to end the rollout.

      - name: 💬 Comment status on failure
        uses: marocchino/sticky-pull-request-comment@v2
        if: steps.rollout.outcome != 'success'
        with:
          number: ${{ steps.config.outputs.pr }}
          header: 'Expo Canary Rollout Status'
          message: |
            # ❌ Rollout Failed
            **Runtime:** `${{ steps.config.outputs.runtime }}`
            **Channel:** `${{ steps.config.outputs.channel }}`
            **Branch:** `${{ steps.config.outputs.branch }}`
            **Rollout status:** `${{ steps.rollout.outcome }}`

            A rollout is already in progress on `${{ steps.config.outputs.channel }}`.
            Try again after the current rollout ends by removing the label and re-adding it.

  rollout-end:
    if:
      | # Check if rollout label was removed or PR was closed with rollout label
      (github.event.action == 'unlabeled' &&
      github.event.label.name == 'rollout') ||
      (github.event.action == 'closed' &&
      contains(github.event.pull_request.labels.*.name, 'rollout'))
    runs-on: ubuntu-latest
    concurrency:
      group: rollout-${{ github.event.pull_request.number }}
      cancel-in-progress: false

    steps:
      - name: 🏗 Setup repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # 👈 Required to retrieve git history

      - name: 🏗 Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20
          cache: 'npm' # or 'yarn', 'pnpm' depending on your package manager

      - name: 📦 Install dependencies
        run: npm ci # or yarn install, pnpm install

      - name: 🏗 Setup Expo
        uses: expo/expo-github-action@v8
        with:
          eas-version: latest
          token: ${{ secrets.EXPO_TOKEN }}

      - name: 🏗 Setup Config
        id: config
        run: | # Modify this section to match your app's config
          # Adjust these paths to match your configuration files
          RUNTIME=$(npx expo config --json|jq -r '.runtimeVersion')
          CHANNEL=$(jq -r '.build.production.channel' < eas.json)
          echo "runtime=$RUNTIME" >> $GITHUB_OUTPUT
          echo "channel=$CHANNEL" >> $GITHUB_OUTPUT
          echo "branch=rollout-pr-${{ github.event.number }}" >> $GITHUB_OUTPUT
          echo "pr=${{ github.event.number }}" >> $GITHUB_OUTPUT

      - name: 🚀 End rollout
        id: end-rollout
        run: |
          BRANCH=${{ steps.config.outputs.branch }}
          CHANNEL=${{ steps.config.outputs.channel }}
          RUNTIME=${{ steps.config.outputs.runtime }}

          echo "🔍 Checking rollout ownership for branch $BRANCH on channel $CHANNEL"

          OUT=$(eas channel:rollout $CHANNEL \
            --action=view --json --non-interactive)

          CURRENT_BRANCH=$(echo "$OUT" | jq -r '.currentRolloutInfo.rolledOutBranch.name // empty')

          if [ -z "$CURRENT_BRANCH" ]; then
            echo "ℹ️ No active rollout on this channel."
            exit 0
          fi

          if [ "$CURRENT_BRANCH" = "$BRANCH" ]; then
            echo "✅ Rollout belongs to this PR – ending rollout"
            eas channel:rollout $CHANNEL \
              --action=end \
              --outcome=revert \
              --runtime-version=$RUNTIME \
              --non-interactive
          else
            echo "⚠️ Rollout is for branch '$CURRENT_BRANCH' (not this PR: '$BRANCH') – skipping end"
            echo "failure_message=Rollout is for branch $CURRENT_BRANCH (not this PR: $BRANCH)" >> $GITHUB_OUTPUT
            exit 1
          fi
        env:
          EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}

      - name: 💬 Comment status on success
        uses: marocchino/sticky-pull-request-comment@v2
        if: steps.end-rollout.outcome == 'success'
        with:
          number: ${{ steps.config.outputs.pr }}
          header: 'Expo Canary Rollout Status'
          message: |
            # ✅ Rollout Ended
            **Runtime:** `${{ steps.config.outputs.runtime }}`
            **Channel:** `${{ steps.config.outputs.channel }}`
            **Branch:** `${{ steps.config.outputs.branch }}`
            **Reason:** `${{ github.event.action == 'closed' && 'PR closed' || 'rollout label removed' }}`

      - name: 💬 Comment status on failure
        uses: marocchino/sticky-pull-request-comment@v2
        if: steps.end-rollout.outcome != 'success'
        with:
          number: ${{ steps.config.outputs.pr }}
          header: 'Expo Canary Rollout Status'
          message: |
            # ❌ Rollout Failed to End
            **Runtime:** `${{ steps.config.outputs.runtime }}`
            **Channel:** `${{ steps.config.outputs.channel }}`
            **Branch:** `${{ steps.config.outputs.branch }}`
            **Reason:** `${{ github.event.action == 'closed' && 'PR closed' || 'rollout label removed' }}`

            ${{ steps.end-rollout.outputs.failure_message && format('{0}', steps.end-rollout.outputs.failure_message) || '' }}