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simplify: remove transcription fallback, respect explicit config

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Configured provider is the only one used — no silent fallback.

Made-with: Cursor
This commit is contained in:
Xubin Ren 2026-04-06 06:13:43 +00:00
parent 3bf1fa5225
commit 019eaff225
2 changed files with 6 additions and 21 deletions
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24
nanobot/channels/base.py
View File

@ -24,7 +24,6 @@ class BaseChannel(ABC):
display_name: str = "Base"
transcription_provider: str = "groq"
transcription_api_key: str = ""
_transcription_fallback_key: str = ""
def __init__(self, config: Any, bus: MessageBus):
"""
@ -39,30 +38,19 @@ class BaseChannel(ABC):
self._running = False
async def transcribe_audio(self, file_path: str | Path) -> str:
"""Transcribe an audio file via Whisper. Falls back to the other provider on failure."""
"""Transcribe an audio file via Whisper (OpenAI or Groq). Returns empty string on failure."""
if not self.transcription_api_key:
return ""
result = await self._try_transcribe(self.transcription_provider, self.transcription_api_key, file_path)
if result:
return result
fallback = "groq" if self.transcription_provider == "openai" else "openai"
if self._transcription_fallback_key:
logger.info("{}: trying {} fallback for transcription", self.name, fallback)
return await self._try_transcribe(fallback, self._transcription_fallback_key, file_path)
return ""
async def _try_transcribe(self, provider: str, api_key: str, file_path: str | Path) -> str:
"""Attempt transcription with a single provider. Returns empty string on failure."""
try:
if provider == "openai":
if self.transcription_provider == "openai":
from nanobot.providers.transcription import OpenAITranscriptionProvider
p = OpenAITranscriptionProvider(api_key=api_key)
provider = OpenAITranscriptionProvider(api_key=self.transcription_api_key)
else:
from nanobot.providers.transcription import GroqTranscriptionProvider
p = GroqTranscriptionProvider(api_key=api_key)
return await p.transcribe(file_path)
provider = GroqTranscriptionProvider(api_key=self.transcription_api_key)
return await provider.transcribe(file_path)
except Exception as e:
logger.warning("{}: {} transcription failed: {}", self.name, provider, e)
logger.warning("{}: audio transcription failed: {}", self.name, e)
return ""
async def login(self, force: bool = False) -> bool:

3
nanobot/channels/manager.py
View File

@ -41,8 +41,6 @@ class ChannelManager:
transcription_provider = self.config.channels.transcription_provider
transcription_key = self._resolve_transcription_key(transcription_provider)
fallback_provider = "groq" if transcription_provider == "openai" else "openai"
fallback_key = self._resolve_transcription_key(fallback_provider)
for name, cls in discover_all().items():
section = getattr(self.config.channels, name, None)
@ -59,7 +57,6 @@ class ChannelManager:
channel = cls(section, self.bus)
channel.transcription_provider = transcription_provider
channel.transcription_api_key = transcription_key
channel._transcription_fallback_key = fallback_key
self.channels[name] = channel
logger.info("{} channel enabled", cls.display_name)
except Exception as e: