|
| 1 | +name: Automerge |
| 2 | + |
| 3 | +on: |
| 4 | + workflow_call: |
| 5 | + secrets: |
| 6 | + RELEASE_TOKEN: |
| 7 | + required: false |
| 8 | + APP_ID: |
| 9 | + required: false |
| 10 | + APP_PRIVATE_KEY: |
| 11 | + required: false |
| 12 | + inputs: |
| 13 | + label: |
| 14 | + description: 'Label that marks PRs eligible for automerge' |
| 15 | + required: false |
| 16 | + default: 'automerge-approved' |
| 17 | + type: string |
| 18 | + merge_method: |
| 19 | + description: 'Merge method to use: merge, squash, or rebase' |
| 20 | + required: false |
| 21 | + default: 'rebase' |
| 22 | + type: string |
| 23 | + delete_branch: |
| 24 | + description: 'Delete the head branch after merging' |
| 25 | + required: false |
| 26 | + default: true |
| 27 | + type: boolean |
| 28 | + runner: |
| 29 | + description: 'Runner to use for the job' |
| 30 | + required: false |
| 31 | + default: 'self-hosted' |
| 32 | + type: string |
| 33 | + |
| 34 | +jobs: |
| 35 | + automerge: |
| 36 | + runs-on: ${{ inputs.runner }} |
| 37 | + permissions: |
| 38 | + contents: write |
| 39 | + pull-requests: write |
| 40 | + steps: |
| 41 | + - name: Check auth configuration |
| 42 | + id: auth-check |
| 43 | + env: |
| 44 | + APP_ID: ${{ secrets.APP_ID }} |
| 45 | + APP_PRIVATE_KEY: ${{ secrets.APP_PRIVATE_KEY }} |
| 46 | + run: | |
| 47 | + if [ -n "${APP_ID}" ] && [ -n "${APP_PRIVATE_KEY}" ]; then |
| 48 | + echo "use_app_auth=true" >> $GITHUB_OUTPUT |
| 49 | + else |
| 50 | + echo "use_app_auth=false" >> $GITHUB_OUTPUT |
| 51 | + fi |
| 52 | +
|
| 53 | + - name: Generate a token |
| 54 | + id: generate-token |
| 55 | + if: steps.auth-check.outputs.use_app_auth == 'true' |
| 56 | + uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0 |
| 57 | + with: |
| 58 | + client-id: ${{ secrets.APP_ID }} |
| 59 | + private-key: ${{ secrets.APP_PRIVATE_KEY }} |
| 60 | + owner: ${{ github.repository_owner }} |
| 61 | + |
| 62 | + - name: Merge labelled PRs |
| 63 | + env: |
| 64 | + GH_TOKEN: ${{ steps.generate-token.outputs.token || secrets.RELEASE_TOKEN || github.token }} |
| 65 | + GH_REPO: ${{ github.repository }} |
| 66 | + LABEL: ${{ inputs.label }} |
| 67 | + MERGE_METHOD: ${{ inputs.merge_method }} |
| 68 | + DELETE_BRANCH: ${{ inputs.delete_branch }} |
| 69 | + run: | |
| 70 | + PR_LIST=$(gh pr list \ |
| 71 | + --label "${LABEL}" \ |
| 72 | + --state open \ |
| 73 | + --json number,title,mergeable,mergeStateStatus) |
| 74 | +
|
| 75 | + PR_COUNT=$(echo "${PR_LIST}" | jq 'length') |
| 76 | +
|
| 77 | + echo "## Automerge Results" >> $GITHUB_STEP_SUMMARY |
| 78 | + echo "" >> $GITHUB_STEP_SUMMARY |
| 79 | +
|
| 80 | + if [ "${PR_COUNT}" -eq 0 ]; then |
| 81 | + echo "No open PRs found with label \`${LABEL}\`." >> $GITHUB_STEP_SUMMARY |
| 82 | + echo "No PRs to merge." |
| 83 | + exit 0 |
| 84 | + fi |
| 85 | +
|
| 86 | + echo "Found ${PR_COUNT} PR(s) with label \`${LABEL}\`." >> $GITHUB_STEP_SUMMARY |
| 87 | + echo "" >> $GITHUB_STEP_SUMMARY |
| 88 | + echo "| PR | Title | Status |" >> $GITHUB_STEP_SUMMARY |
| 89 | + echo "|----|-------|--------|" >> $GITHUB_STEP_SUMMARY |
| 90 | +
|
| 91 | + MERGED=0 |
| 92 | + SKIPPED=0 |
| 93 | + FAILED=0 |
| 94 | +
|
| 95 | + for NUMBER in $(echo "${PR_LIST}" | jq -r '.[].number'); do |
| 96 | + TITLE=$(echo "${PR_LIST}" | jq -r ".[] | select(.number == ${NUMBER}) | .title") |
| 97 | + MERGEABLE=$(echo "${PR_LIST}" | jq -r ".[] | select(.number == ${NUMBER}) | .mergeable") |
| 98 | + STATE=$(echo "${PR_LIST}" | jq -r ".[] | select(.number == ${NUMBER}) | .mergeStateStatus") |
| 99 | +
|
| 100 | + MERGE_ARGS=("${NUMBER}" "--${MERGE_METHOD}") |
| 101 | + [ "${DELETE_BRANCH}" == "true" ] && MERGE_ARGS+=(--delete-branch) |
| 102 | +
|
| 103 | + if [ "${MERGEABLE}" == "MERGEABLE" ] && [ "${STATE}" == "CLEAN" ]; then |
| 104 | + if gh pr merge "${MERGE_ARGS[@]}"; then |
| 105 | + echo "| [#${NUMBER}](${GITHUB_SERVER_URL}/${GH_REPO}/pull/${NUMBER}) | ${TITLE} | Merged |" >> $GITHUB_STEP_SUMMARY |
| 106 | + MERGED=$((MERGED + 1)) |
| 107 | + else |
| 108 | + echo "| [#${NUMBER}](${GITHUB_SERVER_URL}/${GH_REPO}/pull/${NUMBER}) | ${TITLE} | Failed |" >> $GITHUB_STEP_SUMMARY |
| 109 | + FAILED=$((FAILED + 1)) |
| 110 | + fi |
| 111 | + else |
| 112 | + echo "| [#${NUMBER}](${GITHUB_SERVER_URL}/${GH_REPO}/pull/${NUMBER}) | ${TITLE} | Skipped (${STATE}) |" >> $GITHUB_STEP_SUMMARY |
| 113 | + SKIPPED=$((SKIPPED + 1)) |
| 114 | + fi |
| 115 | + done |
| 116 | +
|
| 117 | + echo "" >> $GITHUB_STEP_SUMMARY |
| 118 | + echo "**Merged:** ${MERGED} | **Skipped:** ${SKIPPED} | **Failed:** ${FAILED}" >> $GITHUB_STEP_SUMMARY |
| 119 | +
|
| 120 | + if [ "${FAILED}" -gt 0 ]; then |
| 121 | + echo "::warning::${FAILED} PR(s) failed to merge." |
| 122 | + fi |
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