run the script to check labels at the start of the workflow; exit if none is found

.github/actions-scripts/enterprise-algolia-label.js

@@ -4,10 +4,10 @@ const fs = require('fs')
 const core = require('@actions/core')
 const eventPayload = JSON.parse(fs.readFileSync(process.env.GITHUB_EVENT_PATH, 'utf8'))
 
-// This workflow-run script:
-// 1. Gets an array of labels on a PR
-// 2. Finds one with the relevant Algolia text
-// 3. Gets the version substring from the label string
+// This workflow-run script does the following:
+// 1. Gets an array of labels on a PR.
+// 2. Finds one with the relevant Algolia text; if none found, exits early.
+// 3. Gets the version substring from the label string.
 
 const labelText = 'sync-english-index-for-'
 const labelsArray = eventPayload.pull_request.labels
@@ -15,6 +15,11 @@ const labelsArray = eventPayload.pull_request.labels
 // Find the relevant label
 const algoliaLabel = labelsArray.find(label => label.startsWith(labelText))
 
+// Exit early if no relevant label is found
+if (!algoliaLabel) {
+  process.exit(0)
+}
+
 // Given: sync-english-index-for-enterprise-server@3.0
 // Returns: enterprise-server@3.0
 const versionToSync = algoliaLabel.split(labelText)[1]

.github/workflows/sync-single-english-algolia-index.yml

@@ -15,27 +15,32 @@ on:
 jobs:
   updateIndices:
     name: Update English index for single version based on a label's version
-    if: github.repository == 'github/docs-internal' && contains(github.event.pull_request.labels.*.name, 'sync-english-index-for-')
+    if: github.repository == 'github/docs-internal'
     runs-on: ubuntu-latest
     steps:
-      - name: checkout
+      - name: Get version from label if present
+        id: getVersion
+        run: $GITHUB_WORKSPACE/.github/actions-scripts/enterprise-algolia-label.js
+      - if: ${{ steps.getVersion.outputs.versionToSync }}
+        name: checkout
         uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
-      - uses: actions/setup-node@56899e050abffc08c2b3b61f3ec6a79a9dc3223d
+      - if: ${{ steps.getVersion.outputs.versionToSync }}
+        uses: actions/setup-node@56899e050abffc08c2b3b61f3ec6a79a9dc3223d
         with:
           node-version: 14.x
-      - name: cache node modules
+      - if: ${{ steps.getVersion.outputs.versionToSync }}
+        name: cache node modules
         uses: actions/cache@0781355a23dac32fd3bac414512f4b903437991a
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
           restore-keys: |
             ${{ runner.os }}-node-
-      - name: npm ci
+      - if: ${{ steps.getVersion.outputs.versionToSync }}
+        name: npm ci
         run: npm ci
-      - name: Get version from label
-        id: getVersion
-        run: $GITHUB_WORKSPACE/.github/actions-scripts/enterprise-algolia-label.js
-      - name: Sync English index for single version
+      - if: ${{ steps.getVersion.outputs.versionToSync }}
+        name: Sync English index for single version
         env:
           VERSION: ${{ steps.getVersion.outputs.versionToSync }}
           LANGUAGE: 'en'