feat(ci): add helpful error when check-generated-code gha workflow fails (#627)

* feat(ci): add helpful error when check-generated-code gha workflow fails

* fixup from review, more explicit steps

* fixup from review, stop using .bash suffix and better handle GITHUB_ACTIONS env

* fixup further enhance error message for actionable instructions

* fixup more reasonable bash opts order, o pipefail belongs together

* fixup i'm glad for slow openshift-ci that helped me realize I forgot to finish the shell script renaming

Author: jiridanek

.github/workflows/build-notebooks-TEMPLATE.yaml

@@ -69,7 +69,7 @@ jobs:
           df -h
           free -h
 
-          bash ./ci/cached-builds/gha_lvm_overlay.bash
+          bash ./ci/cached-builds/gha_lvm_overlay.sh
 
           df -h
           free -h

.github/workflows/code-quality.yaml

@@ -15,14 +15,15 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Rerun all code generators we have
-        run: python3 ci/cached-builds/gen_gha_matrix_jobs.py
+        run: bash ci/generate_code.sh
 
       - name: Check there aren't any modified files present
         run: |
           clean=$(git status --porcelain)
           if [[ -z "$clean" ]]; then
               echo "Empty git status --porcelain: $clean"
           else
+              echo "::error::Please run 'bash ci/generate_code.sh' (the command from the previous step), commit the changed files locally, and push again."
               echo "Uncommitted file changes detected: $clean"
               git diff
               exit 1

ci/cached-builds/gen_gha_matrix_jobs.py

@@ -175,9 +175,13 @@ def main() -> None:
 
     print("leafs", leafs)
     print(*output, sep="\n")
-    with open(os.environ["GITHUB_OUTPUT"], "at") as f:
-        for line in output:
-            print(line, file=f)
+
+    if "GITHUB_ACTIONS" in os.environ:
+        with open(os.environ["GITHUB_OUTPUT"], "at") as f:
+            for line in output:
+                print(line, file=f)
+    else:
+        logging.info(f"Not running on Github Actions, won't produce GITHUB_OUTPUT")
 
 
 if __name__ == '__main__':

ci/cached-builds/gha_lvm_overlay.bash renamed to ci/cached-builds/gha_lvm_overlay.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -Eeuxo pipefail
+
+python3 ci/cached-builds/gen_gha_matrix_jobs.py