justin
330543f9ce
Adds the vendor-agnostic seam the AI assistant + match-ranking plug into: - LLMProvider / EmbeddingProvider ABCs (base.py). LLM and embeddings are SEPARATE abstractions — Anthropic has no embeddings endpoint, so each is configured independently and either can be off. - NullLLMProvider / NullEmbeddingProvider — the default; fail loud with a clear "not configured" error so AI-off deployments don't silently no-op. - AnthropicLLMProvider — first concrete LLM impl, via the official anthropic SDK (default model claude-opus-4-8). A local provider (e.g. Ollama) would be another subclass of the same interface. - Factory in deps.py (get_llm_provider / get_embedding_provider) selects by env (MODEL_PROVIDER / EMBEDDING_PROVIDER); documented in .env.example. Providers are read-only text/vector producers — they never touch the DB, so the "AI never writes autonomously" invariant (CLAUDE.md #1) holds; writes will go through ChangeProposal (#214). Tests: provider selection (null default, anthropic when keyed, fallback without key) + null providers raise. 81 passed. Closes #215 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Signed-off-by: Justin Paul <justin@jpaul.me>
32 lines
978 B
Python
32 lines
978 B
Python
"""Default providers when no model backend is configured — AI features are off.
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They fail loudly (rather than silently doing nothing) so a caller that reaches
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for an unconfigured capability gets a clear, actionable error.
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"""
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from app.integrations.models.base import (
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EmbeddingProvider,
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LLMProvider,
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ModelProviderNotConfigured,
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)
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_MSG = (
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"No model provider configured. Set MODEL_PROVIDER (e.g. 'anthropic') and the "
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"provider's credentials to enable AI features."
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)
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class NullLLMProvider(LLMProvider):
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async def complete(self, *, prompt: str, system: str | None = None) -> str:
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raise ModelProviderNotConfigured(_MSG)
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class NullEmbeddingProvider(EmbeddingProvider):
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dimensions = 0
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async def embed(self, texts: list[str]) -> list[list[float]]:
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raise ModelProviderNotConfigured(
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"No embedding provider configured. Set EMBEDDING_PROVIDER and its "
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"credentials to enable match ranking."
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)
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