added code to debug the pr details when it is unable to fetch it

Author: giriraj-singh-couchbase

.github/workflows/alert-on-pr.yml

@@ -25,27 +25,39 @@ jobs:
           pip install pyyaml requests
 
       - name: Parse context from yaml/couchbase.yaml and send Slack alert
-        env:
-          SLACK_WEBHOOK: ${{ secrets.DA_SLACK_WEBHOOK_URL }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          import requests, os
-          repo = os.environ.get('GITHUB_REPOSITORY')
-          pr_number = os.environ.get('GITHUB_REF').split('/')[-1]
-          token = os.environ.get('GITHUB_TOKEN')
-          api_url = f"https://api.github.com/repos/{repo}/pulls/{pr_number}"
-          headers = {'Authorization': f'token {token}', 'Accept': 'application/vnd.github.v3+json'}
-          pr_resp = requests.get(api_url, headers=headers)
-          branch_name = os.environ.get('GITHUB_HEAD_REF', '')
-          if pr_resp.status_code == 200:
-              pr_data = pr_resp.json()
-              pr_title = pr_data.get('title', '')
-              pr_body = pr_data.get('body', '')
-              pr_user = pr_data.get('user', {}).get('login', '')
-              pr_url = pr_data.get('html_url', '')
-              message = f"PR Alert!\nTitle: {pr_title}\nBranch: {branch_name}\nAuthor: {pr_user}\nURL: {pr_url}\nDescription: {pr_body}"
-          else:
-              message = f"PR Alert!\nUnable to fetch PR details."
-          webhook = os.environ['SLACK_WEBHOOK']
-          requests.post(webhook, json={"text": message})
-        shell: python
+    env:
+      SLACK_WEBHOOK: ${{ secrets.DA_SLACK_WEBHOOK_URL }}
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    run: |
+      import requests, os
+      repo = os.environ.get('GITHUB_REPOSITORY')
+      # Try to get PR number from GITHUB_REF (refs/pull/123/merge or refs/pull/123/head)
+      ref = os.environ.get('GITHUB_REF', '')
+      pr_number = ''
+      if ref.startswith('refs/pull/'):
+        pr_number = ref.split('/')[2]
+      else:
+        # fallback: try GITHUB_EVENT_PATH
+        import json
+        event_path = os.environ.get('GITHUB_EVENT_PATH')
+        if event_path and os.path.exists(event_path):
+          with open(event_path) as f:
+            event = json.load(f)
+            pr_number = str(event.get('number', ''))
+      token = os.environ.get('GITHUB_TOKEN')
+      api_url = f"https://api.github.com/repos/{repo}/pulls/{pr_number}"
+      headers = {'Authorization': f'token {token}', 'Accept': 'application/vnd.github.v3+json'}
+      pr_resp = requests.get(api_url, headers=headers)
+      branch_name = os.environ.get('GITHUB_HEAD_REF', '')
+      if pr_resp.status_code == 200:
+        pr_data = pr_resp.json()
+        pr_title = pr_data.get('title', '')
+        pr_body = pr_data.get('body', '')
+        pr_user = pr_data.get('user', {}).get('login', '')
+        pr_url = pr_data.get('html_url', '')
+        message = f"PR Alert!\nTitle: {pr_title}\nBranch: {branch_name}\nAuthor: {pr_user}\nURL: {pr_url}\nDescription: {pr_body}"
+      else:
+        message = f"PR Alert!\nUnable to fetch PR details.\nAPI URL: {api_url}\nStatus: {pr_resp.status_code}\nResponse: {pr_resp.text}"
+      webhook = os.environ['SLACK_WEBHOOK']
+      requests.post(webhook, json={"text": message})
+    shell: python