03892463a5
Preview-Modelle liefern gelegentlich HTTP 200 mit leerem Body (oder 5xx) -> bisher
brach das die ganze Sprech-Runde ab ('empty audio content', 502). Jetzt bis zu 3
Versuche mit linearem Backoff; 4xx (z. B. ungueltige Stimme) wird sofort gemeldet
(kein Retry). Damit klappt das Durchprobieren von Stimmen zuverlaessig (Live-Test:
alle 20 getesteten Gemini-Stimmen inkl. Leda liefern Audio).
Tests: tests/test_openrouter_tts.py (leer->ok, 4xx sofort, alles-leer, 5xx->ok).
Doku-Hinweis in BEDIENUNGSANLEITUNG.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
79 lines
3 KiB
Python
79 lines
3 KiB
Python
import asyncio
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import httpx
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from app.providers.tts.base import TTSProvider
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# Preview-TTS-Modelle liefern gelegentlich HTTP 200 mit LEEREM Body oder ein
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# transientes 5xx. Solche Aussetzer kurz wiederholen, statt die Runde abzubrechen.
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_MAX_ATTEMPTS = 3
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_RETRY_BACKOFF = 0.6 # Sekunden, linear ansteigend
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class OpenRouterTTSProvider(TTSProvider):
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def __init__(self, api_key: str, model: str, voice: str):
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self.api_key = (api_key or "").strip()
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self.model = (model or "").strip()
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self.voice = (voice or "").strip()
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async def synthesize(
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self,
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text: str,
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voice: str | None = None,
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audio_format: str = "pcm",
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) -> bytes:
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if not self.api_key:
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raise ValueError("OPENROUTER_API_KEY is empty")
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if not self.model:
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raise ValueError("OPENROUTER_TTS_MODEL is empty")
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if not text or not text.strip():
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raise ValueError("TTS input text is empty")
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effective_voice = (voice or self.voice).strip()
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if not effective_voice:
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raise ValueError("TTS voice is required for OpenRouter TTS")
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payload = {
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"model": self.model,
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"input": text.strip(),
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"voice": effective_voice,
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"response_format": audio_format,
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}
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timeout = httpx.Timeout(connect=10.0, read=120.0, write=30.0, pool=10.0)
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async with httpx.AsyncClient(timeout=timeout) as client:
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last_error = "OpenRouter TTS returned empty audio content"
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for attempt in range(_MAX_ATTEMPTS):
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try:
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response = await client.post(
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"https://openrouter.ai/api/v1/audio/speech",
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headers={
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"Authorization": f"Bearer {self.api_key}",
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"Content-Type": "application/json",
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},
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json=payload,
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)
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response.raise_for_status()
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except httpx.HTTPStatusError as exc:
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status = exc.response.status_code
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# 4xx (z. B. ungueltige Stimme) ist nicht transient -> sofort melden.
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if status < 500:
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raise RuntimeError(
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f"OpenRouter TTS error {status}: {exc.response.text}"
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) from exc
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last_error = f"OpenRouter TTS error {status}: {exc.response.text}"
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except httpx.TimeoutException:
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last_error = "OpenRouter TTS timeout"
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except httpx.HTTPError as exc:
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raise RuntimeError(f"OpenRouter TTS transport error: {exc}") from exc
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else:
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if response.content:
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return response.content
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# HTTP 200 mit leerem Body -> transienter Aussetzer, erneut versuchen.
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if attempt < _MAX_ATTEMPTS - 1:
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await asyncio.sleep(_RETRY_BACKOFF * (attempt + 1))
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raise RuntimeError(last_error)
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