ci: Wait for cerbero pipeline to finish

So we are sure the pipeline is marked as failed if the cerbero sub pipeline fails

See https://gitlab.com/gitlab-org/gitlab/-/issues/341737 for details

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/946>

1 files changed, 59 insertions, 0 deletions

diff --git a/ci/gitlab/trigger_cerbero_pipeline.py b/ci/gitlab/trigger_cerbero_pipeline.py
new file mode 100755
index 0000000000..5e89135da4
--- /dev/null
+++ b/ci/gitlab/trigger_cerbero_pipeline.py
@@ -0,0 +1,59 @@
+#!/usr/bin/python3
+
+import time
+import os
+import sys
+import gitlab
+
+CERBERO_ID = 1340
+
+class Status:
+    FAILED = 'failed'
+    MANUAL = 'manual'
+    CANCELED = 'canceled'
+    SUCCESS = 'success'
+    SKIPPED = 'skipped'
+    CREATED = 'created'
+
+    @classmethod
+    def is_finished(cls, state):
+        return state in [
+            cls.FAILED,
+            cls.MANUAL,
+            cls.CANCELED,
+            cls.SUCCESS,
+            cls.SKIPPED,
+        ]
+
+
+def fprint(msg):
+    print(msg, end="")
+    sys.stdout.flush()
+
+if __name__ == "__main__":
+    gl = gitlab.Gitlab(
+        "https://gitlab.freedesktop.org/",
+        private_token=os.environ.get('GITLAB_API_TOKEN'),
+        job_token=os.environ.get('CI_JOB_TOKEN')
+    )
+
+    cerbero = gl.projects.get(CERBERO_ID)
+    pipe = cerbero.trigger_pipeline(
+        token=os.environ['CI_JOB_TOKEN'],
+        ref=os.environ["UPSTREAM_BRANCH"],
+        variables={
+            "CI_GSTREAMER_URL": os.environ["CI_PROJECT_URL"],
+            "CI_GSTREAMER_REF_NAME": os.environ["CI_COMMIT_REF_NAME"],
+        }
+    )
+
+    fprint(f'Cerbero pipeline running at {pipe.web_url} ')
+    while True:
+        time.sleep(15)
+        pipe.refresh()
+        if Status.is_finished(pipe.status):
+            fprint(f": {pipe.status}\n")
+            sys.exit(0 if pipe.status == Status.SUCCESS else 1)
+        else:
+            fprint(".")
+