Files
DECNET/decnet/realism/llm/base.py
anti 0b9873982d refactor(realism): move emailgen LLM/personas/prompt into shared library
Lift the format-agnostic pieces from decnet/orchestrator/emailgen/
into the new decnet/realism/ library so file-class content generation
(stage 3 of the realism migration) can reuse them. Email-specific
delivery (RFC 2822 EML, IMAP/POP3 spool, thread chains) stays in
orchestrator/.

Renames (history-preserving git mv):
  emailgen/personas.py     -> realism/personas.py
  emailgen/prompt.py       -> realism/prompts/email.py
  emailgen/global_pool.py  -> realism/personas_pool.py
  emailgen/llm/            -> realism/llm/

Env-var clean break (pre-v1, no aliases):
  DECNET_EMAILGEN_LLM      -> DECNET_REALISM_LLM
  DECNET_EMAILGEN_MODEL    -> DECNET_REALISM_MODEL
  DECNET_EMAILGEN_TIMEOUT  -> DECNET_REALISM_TIMEOUT
  DECNET_EMAILGEN_PERSONAS -> DECNET_REALISM_PERSONAS
  DECNET_EMAILGEN_FAKE_OUTPUT -> DECNET_REALISM_FAKE_OUTPUT

Importers rewritten in: orchestrator/emailgen/scheduler.py,
orchestrator/drivers/email.py, web/router/{emailgen,topology}/
api_personas.py, cli/emailgen.py. Tests for moved modules relocated
to tests/realism/; tests for stay-put modules updated in place.

API URL `/api/v1/emailgen/personas` and CLI `decnet emailgen
import-personas` keep their public names until the service-collapse
commit (stage 5).
2026-04-27 16:05:43 -04:00

48 lines
1.4 KiB
Python

"""Backend protocol shared by every LLM transport.
Deliberately narrow: realism consumers need one async ``generate``
call that takes a prompt string and returns the model's output text
plus enough metadata to populate per-event payloads (model name,
latency, success bit). Streaming, embeddings, multi-turn chat — all
out of scope here; realism only ever does one-shot single-prompt
generations.
"""
from __future__ import annotations
from dataclasses import dataclass, field
from typing import Any, Protocol
class LLMTimeout(Exception):
"""Raised when a generation exceeds the backend's wall-clock cap.
Backends MUST raise this rather than returning silently empty
output; the driver discriminates timeout from "model produced
nothing useful" so payloads carry the right ``stage`` value.
"""
@dataclass
class LLMResult:
"""Outcome of one ``generate`` call.
``success`` is ``False`` when the backend ran cleanly but produced
no usable output (e.g. an empty stdout). Hard failures (subprocess
crash, network error) raise; soft failures land here so the driver
can persist + log them as one event.
"""
success: bool
text: str
model: str
latency_ms: int
extra: dict[str, Any] = field(default_factory=dict)
class LLMBackend(Protocol):
"""Minimal contract for a realism LLM provider."""
model: str
timeout: float
async def generate(self, prompt: str) -> LLMResult: ...