APP definition makes listeners crash #53
Description
If the user defines an application with the following kubevela using the GUI (cd or prod) and clicks the deploy button, optimiser controller, utility evaluator and other components that are listening to the topic eu.nebulouscloud.ui.dsl.generic crash with:
{"@timestamp":"2025-10-17T14:04:45.089099963Z","@version":"1","message":"Client exception for topic://eu.nebulouscloud.ui.dsl.generic ","logger_name":"eu.nebulouscloud.exn.core.Manager","thread_name":"pool-1-thread-3","level":"ERROR","level_value":40000}
The vela:
apiVersion: core.oam.dev/v1beta1
kind: Application
metadata:
name: hello-metrics
spec:
components:
- name: exporter
type: webservice
properties:
image: python:3.11-slim
imagePullPolicy: Always
cpu: "0.5"
memory: "256Mi"
ports:
- port: 8000
expose: true
cmd:
- bash
- -lc
- |
pip install --no-cache-dir prometheus-client >/dev/null 2>&1 && \
python - <<'PY'
import time, random
from prometheus_client import start_http_server, Gauge
g = Gauge("inference_speed_1", "Synthetic FPS")
start_http_server(8000)
while True:
g.set(18 + 4*random.random()) # ~18–22
time.sleep(1)
PY
traits:
- type: scaler
properties:
replicas: 1
https://gui.cd.nebulouscloud.eu/applications/7fe682d6-959f-4014-bd76-f5ba86d309ff