my_voice_assistant_v2/app/providers/llm/base.py
Dieter Schlüter 379e002460 feat: Token-Level-LLM-Streaming über WebSocket (#4 Ausbau)
- LLMProvider.stream: Basis-Default (Fallback über complete) + SSE-Streaming
  fuer OpenRouter und lokalen OpenAI-kompatiblen Provider; gemeinsamer Parser sse_delta
- Orchestrator.chat_stream: LLM-Token live via on_token-Callback, danach
  Spoken-Adapter/Normalizer/TTS/Output; Fallback fuer Provider ohne stream
- WS /ws/chat: opt-in {"stream":true} -> ack -> token* -> semantic -> audio -> done
- Tests: 43 gruen (+5: SSE-Parsing, Default-Fallback, WS-Token-Flow)
- Doku aktualisiert; .gitignore: *.wav (generierte Audio-Ausgaben)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-17 04:37:37 +02:00

39 lines
1.1 KiB
Python

import json
from abc import ABC, abstractmethod
from collections.abc import AsyncIterator
def sse_delta(line: str) -> str | None:
"""Extrahiert das Token-Delta aus einer OpenAI-kompatiblen SSE-Zeile (oder None)."""
if not line.startswith("data:"):
return None
data = line[len("data:"):].strip()
if not data or data == "[DONE]":
return None
try:
obj = json.loads(data)
return obj["choices"][0]["delta"].get("content")
except (ValueError, KeyError, IndexError, TypeError):
return None
class LLMProvider(ABC):
@abstractmethod
async def complete(
self,
text: str,
history: list[dict] | None = None,
session_id: str | None = None,
) -> str: ...
async def stream(
self,
text: str,
history: list[dict] | None = None,
session_id: str | None = None,
) -> AsyncIterator[str]:
"""Token-Stream. Default: kein echtes Streaming -> komplette Antwort als ein Chunk.
Provider mit SSE-Unterstuetzung ueberschreiben diese Methode.
"""
yield await self.complete(text, history=history, session_id=session_id)