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US2KR/us2kr/llm/minimax.py
T
jsahnandClaude Fable 5 f5fa7ec70f Add a Monday-morning weekly recap briefing
No US session closes into Monday KST, so Mondays (default 07:00, cron
in the daemon with restart catch-up) now publish a weekly review built
entirely from stored data: the quotes table collapsed into week-over-
week changes and the week's daily briefing headlines as the narrative.
The recap is a BriefingResult kind="weekly" reusing MarketPayload, so
the store, verification pass, all delivery channels (Blogger title
"미국 주간 리뷰 <monday>") and the dashboard (주간 리뷰 badge) work
unchanged. Manual runs via `run-once --weekly [--date <monday>]`.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-09-12 23:52:31 +09:00

393 lines
15 KiB
Python

"""MiniMax provider: OpenAI-compatible chat completions with JSON-schema output and model fallback."""
from __future__ import annotations
import copy
import json
import logging
import re
from typing import Any, get_origin
import openai
from pydantic import BaseModel, ValidationError
from us2kr.config import Settings
from us2kr.llm.base import LLMError
from us2kr.llm.prompts import (
REVISE_INSTRUCTION,
SYSTEM_PROMPT,
VERIFY_SYSTEM_PROMPT,
WEEKLY_SYSTEM_PROMPT,
build_user_message,
build_verify_message_from,
build_weekly_user_message,
format_issues,
)
from us2kr.models import MarketPayload, Report, Verification, VerificationIssue
log = logging.getLogger(__name__)
# Errors from the openai SDK that mean "this model/attempt failed; try the next model".
OPENAI_ERRORS: tuple[type[Exception], ...] = (
openai.APIStatusError,
openai.APIConnectionError,
openai.APITimeoutError,
openai.RateLimitError,
)
_THINK_BLOCK = re.compile(r"<think>.*?</think>", re.DOTALL)
_CODE_FENCE = re.compile(r"```(?:json|JSON)?\s*(.*?)```", re.DOTALL)
REPAIR_INSTRUCTION = (
"위 응답은 JSON 스키마 검증에 실패했습니다. 아래 오류를 참고하여, 설명 없이 스키마에 맞는 "
"완전한 JSON 객체 하나만 다시 출력하세요.\n\n오류:\n"
)
def _strip_titles(node: Any) -> None:
"""Recursively remove JSON-schema "title" keys (noise for the model, not needed for validation)."""
if isinstance(node, dict):
node.pop("title", None)
for value in node.values():
_strip_titles(value)
elif isinstance(node, list):
for value in node:
_strip_titles(value)
def model_json_schema(model_cls: type[BaseModel]) -> dict[str, Any]:
"""JSON schema for a pydantic model suitable for `response_format` (no titles, closed object)."""
schema = copy.deepcopy(model_cls.model_json_schema())
_strip_titles(schema)
schema["additionalProperties"] = False
return schema
def model_response_format(model_cls: type[BaseModel], name: str) -> dict[str, Any]:
return {"type": "json_schema", "json_schema": {"name": name, "schema": model_json_schema(model_cls)}}
def report_json_schema() -> dict[str, Any]:
return model_json_schema(Report)
def report_response_format() -> dict[str, Any]:
return model_response_format(Report, "report")
def _first_json_object(text: str) -> str | None:
"""Return the first balanced `{...}` block in `text` (string-aware), or None."""
start = text.find("{")
if start < 0:
return None
depth = 0
in_str = False
escape = False
for i in range(start, len(text)):
ch = text[i]
if in_str:
if escape:
escape = False
elif ch == "\\":
escape = True
elif ch == '"':
in_str = False
continue
if ch == '"':
in_str = True
elif ch == "{":
depth += 1
elif ch == "}":
depth -= 1
if depth == 0:
return text[start : i + 1]
return None
def extract_json_text(raw: str) -> str:
"""Strip <think> blocks and code fences from a model reply, returning the JSON candidate text.
Handles: complete <think>...</think> blocks anywhere, an unterminated <think> (take text after the
last </think>, or the first {...} object), and ```json fences. Raises ValueError if nothing remains.
"""
text = _THINK_BLOCK.sub("", raw)
if "<think>" in text:
if "</think>" in raw:
text = raw.rsplit("</think>", 1)[1]
else:
text = _first_json_object(raw) or ""
fence = _CODE_FENCE.search(text)
if fence:
text = fence.group(1)
text = _first_json_object(text.strip()) or ""
if not text:
raise ValueError("no JSON object found in model reply")
return text
def _list_fields(model_cls: type[BaseModel]) -> frozenset[str]:
"""Names of the model's plain string-list fields (targets for the string->list coercion)."""
return frozenset(
name
for name, info in model_cls.model_fields.items()
if get_origin(info.annotation) is list and info.annotation == list[str]
)
_BULLET_SPLIT = re.compile(r"(?:^|\n)\s*(?:[-*•]|\d+[.)])\s+")
_SENTENCE_SPLIT = re.compile(r"(?<=[.!?。])\s+")
def _split_prose(text: str) -> list[str]:
"""Split a prose string into list items: bullets/newlines first, then sentence boundaries."""
parts = [p.strip() for p in _BULLET_SPLIT.split(text) if p.strip()]
if len(parts) <= 1:
parts = [p.strip() for p in re.split(r"\n+", text) if p.strip()]
if len(parts) <= 1:
parts = [p.strip() for p in _SENTENCE_SPLIT.split(text) if p.strip()]
return parts or [text.strip()]
def coerce_model_data(data: Any, model_cls: type[BaseModel]) -> tuple[Any, list[str]]:
"""Fix the common MiniMax schema slip of emitting string-list fields as a single string.
Returns (data, names of coerced fields). Anything that is not a dict is returned untouched so that
pydantic can report the real error.
"""
if not isinstance(data, dict):
return data, []
coerced: list[str] = []
for name in _list_fields(model_cls):
value = data.get(name)
if isinstance(value, str):
data[name] = _split_prose(value)
coerced.append(name)
return data, coerced
def coerce_report_data(data: Any) -> tuple[Any, list[str]]:
return coerce_model_data(data, Report)
def parse_model[T: BaseModel](raw: str, model_cls: type[T]) -> T:
"""Turn raw model content into a validated instance (raises ValueError / ValidationError)."""
text = extract_json_text(raw)
try:
data = json.loads(text)
except json.JSONDecodeError:
return model_cls.model_validate_json(text) # let pydantic produce the canonical error
data, coerced = coerce_model_data(data, model_cls)
if coerced:
log.warning("coerced string -> list for %s fields: %s", model_cls.__name__, ", ".join(sorted(coerced)))
return model_cls.model_validate(data)
def parse_report(raw: str) -> Report:
return parse_model(raw, Report)
class MiniMaxProvider:
"""LLMProvider backed by MiniMax's OpenAI-compatible endpoint with a model fallback chain."""
def __init__(self, settings: Settings, client: Any | None = None) -> None:
self._settings = settings
models = [settings.minimax_model, *settings.minimax_fallback_models]
self._models = list(dict.fromkeys(m for m in models if m))
if not self._models:
raise LLMError("no MiniMax model configured")
if client is None:
if not settings.minimax_api_key:
raise LLMError("MINIMAX_API_KEY is not set")
client = openai.OpenAI(
api_key=settings.minimax_api_key,
base_url=settings.minimax_base_url,
timeout=settings.minimax_timeout_seconds,
max_retries=2,
)
self._client = client
@property
def models(self) -> list[str]:
return list(self._models)
# ------------------------------------------------------------------ public
def summarize(self, payload: MarketPayload) -> tuple[Report, str]:
messages: list[dict[str, Any]] = [
{"role": "system", "content": SYSTEM_PROMPT},
{"role": "user", "content": build_user_message(payload)},
]
return self._run(messages, Report, "report", task="summarize")
def summarize_weekly(self, payload: MarketPayload, week_sessions: list) -> tuple[Report, str]:
"""Weekly recap: payload.quotes carry week-over-week changes, history_notes the daily headlines."""
messages: list[dict[str, Any]] = [
{"role": "system", "content": WEEKLY_SYSTEM_PROMPT},
{"role": "user", "content": build_weekly_user_message(payload, week_sessions)},
]
return self._run(messages, Report, "report", task="summarize-weekly")
def verify(
self, payload: MarketPayload, report: Report, data_message: str | None = None
) -> tuple[Verification, str]:
"""Fact-check `report` against the payload (or an explicit serialisation of it)."""
source = data_message if data_message is not None else build_user_message(payload)
messages: list[dict[str, Any]] = [
{"role": "system", "content": VERIFY_SYSTEM_PROMPT},
{"role": "user", "content": build_verify_message_from(source, report)},
]
return self._run(messages, Verification, "verification", task="verify")
def revise(
self,
payload: MarketPayload,
report: Report,
issues: list[VerificationIssue],
*,
system_prompt: str | None = None,
data_message: str | None = None,
) -> tuple[Report, str]:
"""Ask for a corrected Report given verification issues. Raise LLMError on total failure."""
messages: list[dict[str, Any]] = [
{"role": "system", "content": system_prompt or SYSTEM_PROMPT},
{"role": "user", "content": data_message or build_user_message(payload)},
{"role": "assistant", "content": report.model_dump_json()},
{"role": "user", "content": REVISE_INSTRUCTION + format_issues(issues)},
]
return self._run(messages, Report, "report", task="revise")
# ----------------------------------------------------------------- helpers
def _run[T: BaseModel](
self, messages: list[dict[str, Any]], model_cls: type[T], schema_name: str, task: str
) -> tuple[T, str]:
"""Try every configured model in order; return (parsed instance, model id)."""
response_format = model_response_format(model_cls, schema_name)
attempts: list[str] = []
for model in self._models:
result = self._attempt_model(model, messages, attempts, model_cls, response_format)
if result is not None:
return result, model
raise LLMError(f"all MiniMax models failed ({task}): " + " | ".join(attempts))
def _attempt_model[T: BaseModel](
self,
model: str,
messages: list[dict[str, Any]],
attempts: list[str],
model_cls: type[T],
response_format: dict[str, Any],
) -> T | None:
"""One model: initial call plus at most one repair retry. Returns None when the model failed."""
content = self._call(model, messages, attempts, response_format)
if content is None:
return None
try:
return parse_model(content, model_cls)
except (ValidationError, ValueError) as exc:
error_text = _short(str(exc), 800)
attempts.append(f"{model}: invalid report ({_short(str(exc), 160)})")
log.warning(
"model %s returned invalid report, retrying once with repair hint: %s",
model,
_short(str(exc), 300),
)
repair_messages = [
*messages,
{"role": "assistant", "content": _short(content, 12000)},
{"role": "user", "content": REPAIR_INSTRUCTION + error_text},
]
content = self._call(model, repair_messages, attempts, response_format, label="repair")
if content is None:
return None
try:
return parse_model(content, model_cls)
except (ValidationError, ValueError) as exc:
attempts.append(f"{model} (repair): invalid report ({_short(str(exc), 160)})")
log.warning("model %s repair retry still invalid: %s", model, _short(str(exc), 300))
return None
def _call(
self,
model: str,
messages: list[dict[str, Any]],
attempts: list[str],
response_format: dict[str, Any],
label: str = "initial",
) -> str | None:
"""Perform one chat completion. Returns content text, or None (attempt recorded) on failure."""
tag = model if label == "initial" else f"{model} ({label})"
extra_body: dict[str, Any] = {"reasoning_split": True}
if model.startswith("MiniMax-M3"):
extra_body["thinking"] = {"type": "adaptive"}
try:
completion = self._client.chat.completions.create(
model=model,
messages=messages,
max_completion_tokens=self._settings.minimax_max_completion_tokens,
response_format=response_format,
extra_body=extra_body,
)
except OPENAI_ERRORS as exc:
status = getattr(exc, "status_code", None)
detail = f"{type(exc).__name__}" + (f" {status}" if status else "") + f": {_short(str(exc), 160)}"
attempts.append(f"{tag}: {detail}")
log.warning("MiniMax call failed for %s: %s", tag, detail)
return None
choices = getattr(completion, "choices", None) or []
if not choices:
attempts.append(f"{tag}: empty choices")
log.warning("MiniMax %s returned no choices", tag)
return None
choice = choices[0]
finish_reason = getattr(choice, "finish_reason", None)
self._log_usage(model, completion, finish_reason)
if finish_reason == "length":
attempts.append(f"{tag}: truncated (finish_reason=length)")
log.warning("MiniMax %s output truncated (finish_reason=length)", tag)
return None
content = getattr(choice.message, "content", None)
if not content:
attempts.append(f"{tag}: empty content")
log.warning("MiniMax %s returned empty content", tag)
return None
return content
@staticmethod
def _log_usage(model: str, completion: Any, finish_reason: str | None) -> None:
usage = getattr(completion, "usage", None)
prompt_tokens = getattr(usage, "prompt_tokens", None)
completion_tokens = getattr(usage, "completion_tokens", None)
details = getattr(usage, "prompt_tokens_details", None)
cached = getattr(details, "cached_tokens", None) if details is not None else None
log.info(
"MiniMax response model=%s served_as=%s finish=%s prompt_tokens=%s completion_tokens=%s "
"cached_tokens=%s",
model,
getattr(completion, "model", None),
finish_reason,
prompt_tokens,
completion_tokens,
cached,
)
def _short(text: str, limit: int) -> str:
text = " ".join(text.split())
return text if len(text) <= limit else text[: limit - 1] + "…"
__all__ = [
"OPENAI_ERRORS",
"MiniMaxProvider",
"coerce_model_data",
"coerce_report_data",
"extract_json_text",
"model_json_schema",
"model_response_format",
"parse_model",
"parse_report",
"report_json_schema",
"report_response_format",
]