build: sources for v0.9.18
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@@ -179,10 +179,24 @@ class KobraXClient:
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def connect(self):
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self._do_connect()
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self._running = True
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t = threading.Thread(target=self._read_loop, daemon=True)
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t.start()
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self._ensure_reader()
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time.sleep(0.3)
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def _ensure_reader(self):
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"""Stellt sicher dass der Reader-Thread lebt. Wenn der Reader nach einer
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früheren disconnect/reconnect-Sequenz oder einem unbehandelten Fehler
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gestorben ist, würden empfangene Replies sonst nie ankommen — publish()
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würde dann zwar senden, aber auf Antworten ewig warten."""
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if not self._running:
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return # gewollter disconnect
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t = getattr(self, "_reader_thread", None)
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if t is not None and t.is_alive():
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return
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self._reader_thread = threading.Thread(
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target=self._read_loop, daemon=True, name="kobrax-mqtt-reader",
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)
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self._reader_thread.start()
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def disconnect(self):
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self._running = False
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try:
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@@ -191,20 +205,34 @@ class KobraXClient:
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pass
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def _reconnect(self):
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"""Persistenter Reconnect: versucht endlos weiter bis der Drucker wieder
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antwortet oder disconnect() gerufen wurde. Backoff cappt bei 60 s. Die
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ersten 5 Versuche loggen als WARNING (akute Verbindungsstörung), danach
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nur DEBUG um Log-Spam bei langem Drucker-Ausfall (z.B. über Nacht
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ausgeschaltet) zu vermeiden."""
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log.warning("Verbindung verloren – reconnect…")
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try:
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self._sock.close()
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except Exception:
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pass
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for delay in [2, 4, 8, 15, 30]:
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delays = [2, 4, 8, 15, 30, 60]
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attempt = 0
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while self._running:
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delay = delays[min(attempt, len(delays) - 1)]
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try:
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self._do_connect()
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log.info("Reconnect erfolgreich")
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log.info("Reconnect erfolgreich (nach %d Versuchen)", attempt + 1)
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return True
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except Exception as e:
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log.warning("Reconnect fehlgeschlagen (%s), warte %ss…", e, delay)
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time.sleep(delay)
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return False
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attempt += 1
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lvl = log.warning if attempt <= 5 else log.debug
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lvl("Reconnect fehlgeschlagen (%s, Versuch %d), warte %ss…", e, attempt, delay)
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# Geteiltes Sleep damit disconnect() den Loop schneller bricht.
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slept = 0.0
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while slept < delay and self._running:
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time.sleep(min(0.5, delay - slept))
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slept += 0.5
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return False # nur wenn disconnect() gerufen wurde
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def _subscribe(self, topic: str):
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with self._lock:
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@@ -348,6 +376,9 @@ class KobraXClient:
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# -- Publish + request/response ------------------------------------------
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def publish(self, msg_type: str, action: str, data=None, timeout: float = 5.0) -> dict | None:
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# Falls Reader-Thread aus historischen Gründen tot ist, wiederbeleben —
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# sonst würden Replies nie ankommen und event.wait() läuft ins Timeout.
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self._ensure_reader()
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msgid = str(uuid.uuid4())
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payload = json.dumps({
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"type": msg_type,
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@@ -413,6 +444,7 @@ class KobraXClient:
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def publish_web(self, msg_type: str, action: str, data=None) -> None:
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"""Fire-and-forget publish on the web/printer topic (used for runtime updates during print)."""
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self._ensure_reader()
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msgid = str(uuid.uuid4())
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payload = json.dumps({
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"type": msg_type,
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@@ -429,7 +461,14 @@ class KobraXClient:
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with self._lock:
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self._sock.sendall(_build_publish(topic, payload))
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except Exception as e:
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log.error("web send error: %s", e)
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log.error("web send error: %s, reconnecting…", e)
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# Reconnect triggern (analog zu publish()); ohne Retry weil
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# fire-and-forget — der nächste Aufruf wird auf den frischen Socket
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# treffen.
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try:
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self._reconnect()
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except Exception:
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pass
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# -- High-level commands -------------------------------------------------
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