53e0065e3e
配置 SSOT（TOML + .env） 统一错误契约 Auth 与事务边界 Redis / Celery 可靠性:业务 Redis（DB/0）与 Celery broker/backend（DB/1）显式拆分；连接池、sync client 可观测性（OpenTelemetry + LGTM）
96 lines
3.1 KiB
Python
96 lines
3.1 KiB
Python
"""
|
||
ImagePromptOrchestrator：图片提示词生成编排器。
|
||
根据调用方（封面/正文）选择 build_prompt 或 build_cover_prompt；
|
||
统一异常处理和回退；内部委托 PromptGenerationAgent。
|
||
"""
|
||
|
||
from __future__ import annotations
|
||
|
||
from typing import Any, Optional
|
||
|
||
from app.agents.image_prompt.prompt_agent import PromptGenerationAgent
|
||
from app.core.config import settings
|
||
from app.core.logging import get_logger
|
||
from app.features.memoir.memoir_images.settings import MemoirImageSettings
|
||
from app.features.memoir.constants import memoir
|
||
|
||
logger = get_logger(__name__)
|
||
|
||
|
||
class ImagePromptOrchestrator:
|
||
"""
|
||
图片提示词编排器。
|
||
区分封面 vs 正文配图，统一调用 PromptGenerationAgent；
|
||
异常与回退由 PromptGenerationAgent（底层 MemoirImagePromptService）处理。
|
||
"""
|
||
|
||
def __init__(self, llm: Optional[Any], settings: MemoirImageSettings) -> None:
|
||
self._agent = PromptGenerationAgent(llm=llm, settings=settings)
|
||
|
||
def build_prompt(
|
||
self,
|
||
chapter_title: str,
|
||
chapter_category: str,
|
||
description: str,
|
||
context_excerpt: str,
|
||
) -> dict[str, str]:
|
||
"""
|
||
生成正文配图的 prompt。
|
||
委托 PromptGenerationAgent，已含 LLM 调用失败时的 fallback 逻辑。
|
||
"""
|
||
return self._agent.build_prompt(
|
||
chapter_title=chapter_title,
|
||
chapter_category=chapter_category,
|
||
description=description,
|
||
context_excerpt=context_excerpt,
|
||
)
|
||
|
||
def build_cover_prompt(
|
||
self,
|
||
chapter_title: str,
|
||
chapter_category: str,
|
||
context_excerpt: str,
|
||
) -> dict[str, str]:
|
||
"""
|
||
生成章节封面的 prompt。
|
||
委托 PromptGenerationAgent，已含 LLM 调用失败时的 fallback 逻辑。
|
||
"""
|
||
return self._agent.build_cover_prompt(
|
||
chapter_title=chapter_title,
|
||
chapter_category=chapter_category,
|
||
context_excerpt=context_excerpt,
|
||
)
|
||
|
||
def build_story_primary_prompt(
|
||
self,
|
||
story_title: str,
|
||
story_stage: str | None,
|
||
prompt_brief: str,
|
||
style_profile: str | None,
|
||
) -> dict[str, str]:
|
||
"""生成 story 主插图的 prompt。"""
|
||
return self._agent.build_story_primary_prompt(
|
||
story_title=story_title,
|
||
story_stage=story_stage,
|
||
prompt_brief=prompt_brief,
|
||
style_profile=style_profile,
|
||
)
|
||
|
||
|
||
def get_image_prompt_orchestrator() -> ImagePromptOrchestrator:
|
||
"""Celery / 后台任务入口：统一装配 LLM 与 MemoirImageSettings。"""
|
||
from app.core.llm_gateway import LlmGateway, LlmUseCase
|
||
|
||
image_settings = MemoirImageSettings.from_env()
|
||
try:
|
||
llm = LlmGateway().langchain_llm_for(LlmUseCase("image_prompt"))
|
||
except Exception as e:
|
||
if memoir.image_prompt_fallback_disabled:
|
||
raise
|
||
logger.warning(
|
||
"ImagePromptOrchestrator LLM 初始化失败，使用确定性 fallback: {}",
|
||
e,
|
||
)
|
||
llm = None
|
||
return ImagePromptOrchestrator(llm=llm, settings=image_settings)
|