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docs/dev: sync backend rework, MQTT, and devcontainer hygiene

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README: add Versioning (unified SemVer, pre-releases, build metadata); emphasize UTC handling and streaming endpoint; add Dev Container notes (UI-only Remote Containers, npm ci, idempotent aliases)
TECH-CHANGELOG: backend rework notes (serialization camelCase, UTC normalization, streaming metadata); add component build metadata template (image tags/SHAs)
Copilot instructions: integrate maintenance guardrails; reinforce UTC and camelCase conventions; document MQTT topics and scheduler retained payload behavior
Devcontainer: map Remote Containers to UI; remove in-container install; switch to npm ci; make aliases idempotent
This commit is contained in:
RobbStarkAustria
2025-11-29 15:35:13 +00:00
parent 6dcf93f0dd
commit df9f29bc6a
13 changed files with 399 additions and 42 deletions
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21
listener/listener.py
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@@ -26,6 +26,17 @@ engine = create_engine(DB_URL)
Session = sessionmaker(bind=engine)
def on_connect(client, userdata, flags, reasonCode, properties):
"""Callback for when client connects or reconnects (API v2)."""
try:
# Subscribe on every (re)connect so we don't miss heartbeats after broker restarts
client.subscribe("infoscreen/discovery")
client.subscribe("infoscreen/+/heartbeat")
logging.info(f"MQTT connected (reasonCode: {reasonCode}); (re)subscribed to discovery and heartbeats")
except Exception as e:
logging.error(f"Subscribe failed on connect: {e}")
def on_message(client, userdata, msg):
topic = msg.topic
logging.debug(f"Empfangene Nachricht auf Topic: {topic}")
@@ -87,14 +98,14 @@ def on_message(client, userdata, msg):
def main():
mqtt_client = mqtt.Client(protocol=mqtt.MQTTv311, callback_api_version=2)
mqtt_client = mqtt.Client(protocol=mqtt.MQTTv311, callback_api_version=mqtt.CallbackAPIVersion.VERSION2)
mqtt_client.on_message = on_message
mqtt_client.on_connect = on_connect
# Set an exponential reconnect delay to survive broker restarts
mqtt_client.reconnect_delay_set(min_delay=1, max_delay=60)
mqtt_client.connect("mqtt", 1883)
mqtt_client.subscribe("infoscreen/discovery")
mqtt_client.subscribe("infoscreen/+/heartbeat")
logging.info(
"Listener gestartet und abonniert auf infoscreen/discovery und infoscreen/+/heartbeat")
logging.info("Listener gestartet; warte auf MQTT-Verbindung und Nachrichten")
mqtt_client.loop_forever()