Add workflow to tag floating aliases (#260)

Author: sethvargo

.github/workflows/example-workflow-quickstart.yaml

@@ -23,15 +23,14 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-        
+
     - name: Deploy to Cloud Run
       id: deploy
-      uses: google-github-actions/deploy-cloudrun@v0.2.0
+      uses: google-github-actions/deploy-cloudrun@v0
       with:
         image: gcr.io/cloudrun/hello
         service: hello-cloud-run
         credentials: ${{ secrets.GCP_SA_KEY }}
 
     - name: Show Output
       run: echo ${{ steps.deploy.outputs.url }}
-      

.github/workflows/example-workflow.yaml

@@ -47,7 +47,7 @@ jobs:
 
     - name: Deploy to Cloud Run
       id: deploy
-      uses: google-github-actions/deploy-cloudrun@v0.4.0
+      uses: google-github-actions/deploy-cloudrun@v0
       with:
         service: ${{ env.SERVICE }}
         image: gcr.io/${{ env.PROJECT_ID }}/${{ env.SERVICE }}:${{  github.sha }}

.github/workflows/tag.yml

@@ -0,0 +1,58 @@
+name: 'tag'
+
+on:
+  push:
+    tags:
+    # match vx.y and v x.y.z.w... but not vx
+    - 'v[0-9]+.*'
+
+jobs:
+  # pointer parses the incoming tag value and updates the "vX" pointer to the
+  # same SHA as this tag.
+  pointer:
+    name: 'pointer'
+    runs-on: 'ubuntu-latest'
+    steps:
+    - uses: 'actions/github-script@v5'
+      with:
+        script: |-
+          const tag = process.env.GITHUB_REF_NAME;
+          if(!tag) {
+            core.setFailed(`Missing tag!`)
+            return
+          }
+          core.info(`Using tag "${tag}"`)
+
+          const matches = tag.match(/(v[0-9]+).*/)
+          if(!matches || matches.length < 2) {
+            core.setFailed(`Invalid tag "${tag}"`)
+            return
+          }
+          const major = matches[1];
+          core.info(`Matched to major tag "${major}"`)
+
+          // Try to update the ref first. If that fails, it probably does not
+          // exist yet, and we should create it.
+          try {
+            await github.rest.git.updateRef({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: `tags/${major}`,
+              sha: context.sha,
+              force: true,
+            })
+
+            core.info(`Updated "${major}" to "${tag}" (${context.sha})`)
+          } catch {
+            core.warning(`Failed to update "${major}" tag (it may not `+
+              `exist). Trying to create "${major}" now.`)
+
+            await github.rest.git.createRef({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: `refs/tags/${major}`,
+              sha: context.sha,
+            })
+
+            core.info(`Created "${major}" at "${tag}" (${context.sha})`)
+          }

README.md

@@ -60,7 +60,7 @@ jobs:
         service_account: '[email protected]'
 
     - id: 'deploy'
-      uses: 'google-github-actions/deploy-cloudrun@v0.6.0'
+      uses: 'google-github-actions/deploy-cloudrun@v0'
       with:
         service: 'hello-cloud-run'
         image: 'gcr.io/cloudrun/hello'
@@ -169,7 +169,7 @@ jobs:
         service_account: '[email protected]'
 
     - name: 'Deploy to Cloud Run'
-      uses: 'google-github-actions/deploy-cloudrun@v0.6.0'
+      uses: 'google-github-actions/deploy-cloudrun@v0'
       with:
         image: 'gcr.io/cloudrun/hello'
         service: 'hello-cloud-run'
@@ -187,7 +187,7 @@ jobs:
         credentials_json: '${{ secrets.GCP_SA_KEY }}'
 
     - name: 'Deploy to Cloud Run'
-      uses: 'google-github-actions/deploy-cloudrun@v0.6.0'
+      uses: 'google-github-actions/deploy-cloudrun@v0'
       with:
         image: 'gcr.io/cloudrun/hello'
         service: 'hello-cloud-run'
@@ -205,7 +205,7 @@ jobs:
   job_id:
     steps:
     - name: 'Deploy to Cloud Run'
-      uses: 'google-github-actions/deploy-cloudrun@v0.6.0'
+      uses: 'google-github-actions/deploy-cloudrun@v0'
       with:
         image: 'gcr.io/cloudrun/hello'
         service: 'hello-cloud-run'
@@ -294,7 +294,7 @@ jobs:
         credentials_json: '${{ secrets.GCP_SA_KEY }}'
 
     - name: 'Deploy to Cloud Run'
-      uses: 'google-github-actions/deploy-cloudrun@v0.6.0'
+      uses: 'google-github-actions/deploy-cloudrun@v0'
       with:
         service: '${{ env.SERVICE }}'
         image: 'gcr.io/${{ env.PROJECT_ID }}/${{ env.SERVICE }}'