Move release logic into sidecar script

Author: nwiltsie

.github/workflows/create-new-tag.yaml

@@ -7,51 +7,30 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Dump GitHub context
+      # Get the version of _this_ repository that is in use so that we can use
+      # sidecar scripts
+      - id: workflow-parsing
+        name: Get SHA of reusuable workflow
         env:
-          GITHUB_CONTEXT: ${{ toJson(github) }}
-        run: echo "$GITHUB_CONTEXT"
+          REPO: ${{ github.repository }}
+          RUN_ID: ${{ github.run_id }}
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          ACTION_DATA=$(gh api "repos/$REPO/actions/runs/$RUN_ID")
+          echo "::debug::$ACTION_DATA"
+          SHA=$(echo "$ACTION_DATA" | jq -r '.referenced_workflows | .[] | select(.path | startswith("uclahs-cds/tool-create-release")).sha')
+          echo "SHA=$SHA" >> "$GITHUB_OUTPUT"
+
+      - name: Checkout reusable repository
+        uses: actions/checkout@v4
+        with:
+          repository: uclahs-cds/tool-create-release
+          ref: ${{ steps.workflow-parsing.outputs.SHA }}
+          token: ${{ secrets.UCLAHS_CDS_REPO_READ_TOKEN }}
 
       - id: parse-version
         uses: actions/github-script@v7
         with:
           script: |
-            // Sanity-check that this was called from an appropriate merge event and
-            // extract the version number embedded in the branch name.
-
-            if (context.eventName !== 'pull_request') {
-              core.setFailed('Workflow requires pull_request events')
-              process.exit()
-            }
-
-            if (!context.payload.pull_request.merged || context.payload.pull_request.state !== 'closed') {
-              core.setFailed('Workflow should only be called on merged and closed PRs')
-              process.exit()
-            }
-
-            if (!['Bot', 'Organization'].includes(context.payload.pull_request.user.type)) {
-              core.setFailed('Workflow should only be called for Bot- or Organization-generated release PRs')
-              process.exit()
-            }
-
-            // This regex needs to kept in-sync with the pattern in create-release-pr.yaml
-            const regex = /^automation-create-release-(.*)$/i
-            const parsed_version = context.payload.pull_request.head.ref.match(regex)
-
-            if (!parsed_version || !parsed_version[1].length) {
-              core.setFailed('Workflow not called from an appropriate branch name')
-              process.exit()
-            }
-
-            const new_version = parsed_version[1]
-
-            github.rest.repos.createRelease({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              tag_name: `v${new_version}`,
-              target_commitish: context.payload.pull_request.merge_commit_sha,
-              name: `Release ${new_version}`,
-              draft: true,
-              generate_release_notes: true,
-              body: `Automatically generated after merging #${context.payload.number}.`
-            })
+            const script = require('./scripts/create-tag.js')
+            await script({github, context, core})

scripts/create-tag.js

@@ -0,0 +1,54 @@
+module.exports = async ({ github, context, core }) => {
+  // Sanity-check that this was called from an appropriate merge event and
+  // extract the version number embedded in the branch name.
+  if (context.eventName !== 'pull_request') {
+    core.setFailed('Workflow requires pull_request events')
+    process.exit()
+  }
+
+  if (
+    !context.payload.pull_request.merged ||
+    context.payload.pull_request.state !== 'closed'
+  ) {
+    core.setFailed('Workflow should only be called on merged and closed PRs')
+    process.exit()
+  }
+
+  if (
+    !['Bot', 'Organization'].includes(context.payload.pull_request.user.type)
+  ) {
+    core.setFailed(
+      'Workflow should only be called for Bot- or Organization-generated release PRs'
+    )
+    process.exit()
+  }
+
+  // This regex needs to kept in-sync with the pattern in create-release-pr.yaml
+  const regex = /^automation-create-release-(.*)$/i
+  const parsedVersion = context.payload.pull_request.head.ref.match(regex)
+
+  if (!parsedVersion || !parsedVersion[1].length) {
+    core.setFailed('Workflow not called from an appropriate branch name')
+    process.exit()
+  }
+
+  const newVersion = parsedVersion[1]
+
+  await github.rest.repos.createRelease({
+    owner: context.repo.owner,
+    repo: context.repo.repo,
+    tag_name: `v${newVersion}`,
+    target_commitish: context.payload.pull_request.merge_commit_sha,
+    name: `Release ${newVersion}`,
+    draft: true,
+    generate_release_notes: true,
+    body: `Automatically generated after merging #${context.payload.number}.`
+  })
+
+  // Attempt to delete the release branch
+  await github.rest.git.deleteRef({
+    owner: context.repo.owner,
+    repo: context.repo.repo,
+    ref: `heads/${context.payload.pull_request.head.ref}`
+  })
+}