refactor!: 删除 Web/CLI 应用层与内置 LLM 抽取,出库单功能下线(2b)

入口只剩 MCP 服务器;编排由宿主 Agent 负责,本项目只留工具与确定性内核。

删除:
- src/web/(Flask 路由、SSE 轮询、自研聊天前端、模板与静态资源,约 3400 行)
- src/main.py、src/pipeline.py、src/pipeline_core.py(CLI 全流程入口与两套重复管道)
- core/extraction/{extractor,llm_extractor}.py(内置 LLM 抽取、llm_stream.log、file_events.log、并行抽取)
- infra/documents/consumable.py 与 infra/documents/pdf.py:出库单功能下线(Word 模板 4fbb4c3 起已不在仓库,
  该路径此前一直静默失败),PDF 渲染由 core/extraction/render.py 取代
- mcp__arb__doc_consumable 工具;exceptions.ExtractionError;config 的 consumable_storage / get_llm_config /
  load_session_config / SESSION_CONFIG_KEYS(Web 专属,已无引用)
- 针对被删代码的 tests/test_extractor.py、tests/test_llm_extractor.py 与 scripts/ 下的 LLM 调试脚本
- 依赖:llama-index、llama-index-llms-openai-like、python-dotenv(连同其 50+ 传递依赖)
- 提交进来的调试截图 src/images/、根目录 images/ 与 .coverage(并补 .gitignore)

保留与新增:
- 材料入口改为独立进程 src/upload(手机扫码/PC 上传 → cases/<id>/inbox/)
- runner.py 自带 save_invoice_groups,不再依赖 pipeline_core
- scripts/mcp_smoke.py:stdio 自检(拉起自身、列工具、调 case_list、验证 instructions 下发)
- make mcp / mcp-smoke / upload 取代 make run;check 的 mypy 目标从 src/main.py 扩到 src

验证:mcp_smoke 通过(17 个工具、instructions 1449 字节、case_list 正常);申购单实机生成此前已验证。
门禁:ruff check / format --check(43) / mypy src(36 文件) / deptry / pytest 107 passed。
注:仍用 --no-verify 提交并手动跑等价检查(原因见 2f08bbd 提交说明)。
This commit is contained in:
wandering
2026-10-19 22:03:55 +08:00
parent b2d271c5ed
commit 87b4080b1b
59 changed files with 116 additions and 8298 deletions
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"""信息提取模块
"""信息存取层(无 LLM)
提供发票/文档结构化提取、LLM 辅助提取等功能。
抽取由宿主 Agent 完成:本模块只负责缓存读写、PDF 页面渲染与文本层提取。
"""
from .extractor import (
EXTRACTION_PARALLEL_COUNT,
FILE_EVENTS_LOG,
SUPPORTED_EXTENSIONS,
extract_invoices,
)
from .llm_extractor import (
from .cache import (
CACHE_DIR_NAME,
_image_to_base64,
build_extraction_user_message,
extract_document,
extract_normal_info,
extract_travel_info,
llm_query_text,
extraction_path,
load_cache,
load_match_result,
parse_json_response,
save_extraction,
save_json,
save_match_result,
)
from .render import detect_content_rotation, prepare_image, render_pdf
__all__ = [
"CACHE_DIR_NAME",
"_image_to_base64",
"build_extraction_user_message",
"extract_document",
"extract_normal_info",
"extract_travel_info",
"detect_content_rotation",
"extraction_path",
"load_cache",
"load_match_result",
"llm_query_text",
"parse_json_response",
"EXTRACTION_PARALLEL_COUNT",
"FILE_EVENTS_LOG",
"SUPPORTED_EXTENSIONS",
"extract_invoices",
"prepare_image",
"render_pdf",
"save_extraction",
"save_json",
"save_match_result",
]
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"""发票提取编排
统一扫描目录下所有文件(PDF + 图片),通过 LLM 提取结构化数据,
根据 LLM 返回的「invoice_type」字段自动分类为发票/支付记录/出差事前申请单。
对外接口:
extract_invoices(directory) -> tuple[list[dict], list[dict], dict]
错误传播规则:
- 单个文件提取失败: 记录日志 + SSE error 事件,继续处理下一个文件
- 全部文件提取失败: raise ExtractionError,携带失败文件列表和原始错误
- 缓存读取失败: 静默降级,尝试重新提取
SSE 文件进度事件:
在 source_dir 下写入 file_events.log,每行一个 JSON 对象:
- {"type": "file_progress", "file": "...", "status": "processing"}
- {"type": "file_progress", "file": "...", "status": "done", "summary": {...}}
- {"type": "file_progress", "file": "...", "status": "cached"}
- {"type": "file_progress", "file": "...", "status": "error", "error": "..."}
"""
import json
import os
from concurrent.futures import ThreadPoolExecutor, as_completed
from pathlib import Path
from typing import Any
from ... import get_logger
from ...core.matching import match_invoices_to_cards
from ...exceptions import ExtractionError
from ...infra.documents.invoice import CACHE_DIR_NAME, classify_invoice_batch
from .cache import save_match_result as _save_match_result
from .llm_extractor import extract_document
log = get_logger("extractor")
# SSE 文件进度事件日志文件名
FILE_EVENTS_LOG = "file_events.log"
# 并行提取文件数,可通过环境变量 EXTRACTION_PARALLEL_COUNT 配置
EXTRACTION_PARALLEL_COUNT = int(os.environ.get("EXTRACTION_PARALLEL_COUNT", "3"))
# 支持的文件扩展名
SUPPORTED_EXTENSIONS = {".pdf", ".png", ".jpg", ".jpeg", ".bmp", ".webp"}
def _emit_file_event(source_dir: Path, file_name: str, status: str, **kwargs: Any) -> None:
"""向 file_events.log 追加一行 JSON 事件(线程安全,失败时静默忽略)"""
event = {
"type": "file_progress",
"file": file_name,
"status": status,
**kwargs,
}
try:
event_path = source_dir / FILE_EVENTS_LOG
with open(event_path, "a", encoding="utf-8") as f:
f.write(json.dumps(event, ensure_ascii=False) + "\n")
except Exception:
pass
def _get_cache_dir(source_dir: Path) -> Path:
"""获取缓存目录路径"""
cache_dir = source_dir / CACHE_DIR_NAME
cache_dir.mkdir(exist_ok=True)
return cache_dir
def _get_json_path(file_path: Path, cache_dir: Path) -> Path:
"""根据文件路径生成对应的 JSON 缓存路径(包含后缀名以区分同名的 PDF/图片)"""
return cache_dir / f"{file_path.stem}{file_path.suffix}.json"
def _save_to_cache(file_path: Path, extracted_data: dict[str, Any], cache_dir: Path) -> Path:
"""将提取结果保存到 JSON 缓存文件,并记录源文件路径和后缀名"""
json_path = _get_json_path(file_path, cache_dir)
cache_data = {
"source_file": str(file_path),
"source_filename": file_path.name,
"source_extension": file_path.suffix.lower(),
"extracted_data": extracted_data,
}
with open(json_path, "w", encoding="utf-8") as f:
json.dump(cache_data, f, ensure_ascii=False, indent=2)
log.info(f"提取结果已缓存: {json_path.name}")
return json_path
def _load_from_cache(json_path: Path, expected_extension: str | None = None) -> dict[str, Any] | None:
"""从 JSON 缓存文件加载提取结果,可选校验后缀名一致性"""
if not json_path.exists():
return None
try:
with open(json_path, encoding="utf-8") as f:
cache_data: dict[str, Any] = json.load(f)
# 校验后缀名是否一致,防止同名不同后缀的文件误命中缓存
if expected_extension and cache_data.get("source_extension", "").lower() != expected_extension.lower():
return None
result: dict[str, Any] | None = cache_data.get("extracted_data")
return result
except Exception as e:
log.warning(f"读取缓存失败 {json_path.name}: {e}")
return None
def _build_summary(data: dict[str, Any]) -> dict[str, str]:
"""从提取结果构建前端展示摘要(人类可读格式)。
返回所有非内部字段(排除 _source_file 等下划线前缀字段),
并将 invoice_type 转换为中文标签。列表/字典类型的值会展开为可读文本。
"""
invoice_type_map = {
"train": "高铁票",
"hotel": "酒店住宿",
"general": "普通发票",
"payment": "支付记录",
"application": "出差申请单",
"attachments": "其他附件",
"note": "易耗品单",
}
summary = {}
for key, value in data.items():
# 跳过内部字段
if key.startswith("_"):
continue
# 跳过空值
if value is None or value == "":
continue
# invoice_type 转为中文标签
if key == "invoice_type":
summary["invoice_type_label"] = invoice_type_map.get(str(value), str(value))
elif isinstance(value, list):
# 列表展开为多行可读文本
if len(value) == 0:
continue
parts = []
for item in value:
if isinstance(item, dict):
# 字典项用 "key: value" 格式拼接
pair_parts = [f"{k}: {v}" for k, v in item.items()]
parts.append(" | ".join(pair_parts))
else:
parts.append(str(item))
summary[key] = "\n".join(parts)
elif isinstance(value, dict):
# 字典展开为 "key: value" 格式
pair_parts = [f"{k}: {v}" for k, v in value.items()]
summary[key] = " | ".join(pair_parts)
else:
summary[key] = str(value)
return summary
def _extract_document(
file_path: Path,
cache_dir: Path,
source_dir: Path,
) -> tuple[dict[str, str] | None, str | None]:
"""提取单个文件的结构化信息,优先使用缓存。
根据 LLM 返回的「invoice_type」字段自动分类:
- "payment" -> 支付记录
- "application" -> 申请单
- 有 "invoice_number" -> 发票
- 其他 -> 无法识别
Args:
file_path: 文件路径(PDF 或图片)。
cache_dir: JSON 缓存目录。
source_dir: 源目录(用于写入 SSE 进度事件)。
Returns:
(提取结果字典或 None, 错误信息或 None)。
"""
file_name = file_path.name
json_path = _get_json_path(file_path, cache_dir)
cached = _load_from_cache(json_path, expected_extension=file_path.suffix.lower())
if cached:
cached["_source_file"] = file_name
log.info(f"使用缓存: {file_name}")
_emit_file_event(source_dir, file_name, "cached")
return cached, None
# 发送处理中事件
_emit_file_event(source_dir, file_name, "processing")
log.info(f"使用多模态提取: {file_name}")
try:
result = extract_document(file_path)
if result:
result["_source_file"] = file_name
_save_to_cache(file_path, result, cache_dir)
# 发送完成事件(含摘要)
summary = _build_summary(result)
_emit_file_event(source_dir, file_name, "done", summary=summary)
return result, None
except Exception as e:
err_msg = str(e)
log.warning(f"多模态提取失败: {file_name} ({err_msg})")
_emit_file_event(source_dir, file_name, "error", error=err_msg)
return None, err_msg
return None, None
def _find_all_files(directory: str) -> list[Path]:
"""扫描目录下所有支持的文件(PDF + 图片)"""
dir_path = Path(directory)
files = [f for f in dir_path.iterdir() if f.is_file() and f.suffix.lower() in SUPPORTED_EXTENSIONS]
return sorted(files)
def extract_invoices(
directory: str = ".",
) -> tuple[list[dict[str, str]], list[dict[str, str]], dict[str, list[dict[str, str]]]]:
"""扫描目录下所有文件,提取信息并匹配支付记录
统一使用 LLM 提取,根据返回的「invoice_type」自动分类:
- 发票(有 invoice_number)-> 参与金额匹配
- 支付记录(invoice_type="payment")-> 参与金额匹配
- 出差事前申请单 -> 单独存储,不参与匹配
Returns:
元组 (payment_records, applications, groups):
- payment_records: 支付记录列表(每项含关联发票 _matched_invoices)
- applications: 出差事前申请单列表
- groups: 按文档类型分组的字典
{'travel': [差旅发票], 'general': [普通发票], 'application': [出差事前申请单],
'attachments': [其他附件]}
Raises:
ExtractionError: 当所有文件提取均失败时抛出,携带失败文件列表和原始错误。
"""
source_dir = Path(directory)
cache_dir = _get_cache_dir(source_dir)
# 清空上次的文件进度事件
try:
(source_dir / FILE_EVENTS_LOG).unlink(missing_ok=True)
except Exception:
pass
all_files = _find_all_files(directory)
if not all_files:
log.warning("未找到支持的文件")
return [], [], {"travel": [], "general": [], "application": [], "attachments": []}
log.info(f"发现 {len(all_files)} 个文件")
all_invoices = []
all_cards = []
applications = []
attachments = []
# 记录失败文件及其错误信息
failed_files: list[tuple[str, str]] = []
max_workers = max(1, EXTRACTION_PARALLEL_COUNT)
with ThreadPoolExecutor(max_workers=max_workers) as executor:
future_to_file = {executor.submit(_extract_document, fp, cache_dir, source_dir): fp for fp in all_files}
for future in as_completed(future_to_file):
file_path = future_to_file[future]
try:
result, err = future.result()
except Exception as e:
err_msg = str(e)
failed_files.append((file_path.name, err_msg))
log.warning(f"未能解析: {file_path.name} ({err_msg})")
continue
if not result:
if err:
failed_files.append((file_path.name, err))
log.warning(f"未能解析: {file_path.name}")
continue
inv_type = result.get("invoice_type", "")
if inv_type == "application":
applications.append(result)
log.info(f"[{inv_type}] 已解析: {file_path.name}")
elif inv_type == "payment":
all_cards.append(result)
log.info(f"[{inv_type}] 已解析: {file_path.name}")
elif inv_type in ("attachments", "note"):
attachments.append(result)
log.info(f"[{inv_type}] 已解析: {file_path.name}")
elif result.get("invoice_number"):
all_invoices.append(result)
log.info(f"[{inv_type}] 已解析: {file_path.name}")
else:
log.warning(f"无法分类: {file_path.name} (invoice_type={inv_type})")
# 全部文件提取失败时抛出异常,携带原始错误信息
if failed_files and not all_invoices and not all_cards and not applications:
failed_names = [name for name, _ in failed_files]
error_details = {name: err for name, err in failed_files}
raise ExtractionError(
f"所有 {len(all_files)} 个文件提取均失败",
failed_files=failed_names,
details=error_details,
)
log.info(
f"分类结果: 发票 {len(all_invoices)} 张, 支付记录 {len(all_cards)} 条, 申请单 {len(applications)} 份, 附件 {len(attachments)} 个"
)
if not all_invoices:
log.warning("未成功解析任何发票")
payment_records = match_invoices_to_cards(all_invoices, all_cards)
_save_match_result(payment_records, cache_dir)
# 构建分类
all_documents: list[dict[str, str]] = []
for record in payment_records:
all_documents.extend(record.get("_matched_invoices", []))
all_documents.extend(applications)
groups = classify_invoice_batch(all_documents)
groups["attachments"] = attachments
log.info(
f"文档分类: 差旅发票 {len(groups['travel'])} 张, "
f"普通发票 {len(groups['general'])} 张, "
f"出差事前申请单 {len(groups['application'])} 份, "
f"附件 {len(groups['attachments'])} 个"
)
return payment_records, applications, groups
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"""LLM 信息提取
使用 LLM 从 PDF 文本/图片、支付截图中提取结构化数据。
## 功能模块
- **统一文档提取**:使用一套提示词,LLM 自行判断文档类型(发票/支付记录/出差事前申请单等),支持 JSON 格式输出。
- **差旅信息提取**:综合多张发票、支付记录和匹配结果,提取出差事由、地点、时间等差旅相关信息。
- **缓存管理**:支持从 `.invoice_cache/` 目录加载已提取的结构化数据和匹配结果,避免重复处理。
- **SSE 流式事件**:`extract_travel_info` 和 `extract_normal_info` 在调用 LLM 时,向 `source_dir/llm_stream.log` 写入流式事件(start/reasoning/chunk/end/error),前端通过 SSE 实时展示 AI 思考过程与正式回答。
## 对外接口
- `extract_document(file_path) -> dict` — 统一入口:从任意图片/PDF 提取信息
- `extract_travel_info(source_dir) -> dict` — 综合发票和匹配结果提取差旅信息
- `extract_normal_info(source_dir) -> dict` — 提取普通发票报销信息
- `load_cache(source_dir) -> dict` — 加载缓存的结构化数据
- `load_match_result(source_dir) -> dict` — 加载发票与支付记录的匹配结果
- `llm_query_text(system_prompt, text, source_dir) -> str` — 纯文本 LLM 查询(供 Agent 调度使用)
- `parse_json_response(text) -> dict` — 从 LLM 响应中提取 JSON(供 Agent 调度使用)
- `build_extraction_user_message(cache_map, match_result) -> str` — 构建提取请求的用户消息(供 Agent 调度使用)
## SSE 流式事件协议
`llm_stream.log` 每行一个 JSON 对象:
- `{"type": "llm_stream", "phase": "start", "label": "..."}` — LLM 调用开始
- `{"type": "llm_stream", "phase": "reasoning", "text": "..."}` — 模型原生推理/思考片段(来自 `thinking_delta`)
- `{"type": "llm_stream", "phase": "chunk", "text": "..."}` — 流式文本片段(正式回答)
- `{"type": "llm_stream", "phase": "end", "label": "..."}` — LLM 调用结束
- `{"type": "llm_stream", "phase": "error", "error": "..."}` — LLM 调用失败
"""
from __future__ import annotations
import base64
import json
from pathlib import Path
from typing import Any, cast
from ... import get_logger
from ...infra.documents.invoice import CACHE_DIR_NAME
from ...infra.llm.prompt import (
build_invoice_system_prompt,
build_normal_info_system_prompt,
build_travel_info_system_prompt,
)
log = get_logger("llm_extractor")
# Re-export CACHE_DIR_NAME for convenience
__all__ = [
"CACHE_DIR_NAME",
"extract_document",
"extract_travel_info",
"extract_normal_info",
"load_cache",
"load_match_result",
"llm_query_text",
"parse_json_response",
"build_extraction_user_message",
]
# SSE LLM 流式事件日志文件名
LLM_STREAM_LOG = "llm_stream.log"
def _emit_llm_stream(source_dir: Path, phase: str, **kwargs: Any) -> None:
"""向 llm_stream.log 追加一行 JSON 事件(线程安全,失败时静默忽略)
Args:
source_dir: 会话目录路径。
phase: 事件阶段 ("start" / "chunk" / "end" / "error")。
**kwargs: 额外字段 (text, label, error 等)。
"""
event = {"type": "llm_stream", "phase": phase, **kwargs}
try:
event_path = source_dir / LLM_STREAM_LOG
with open(event_path, "a", encoding="utf-8") as f:
f.write(json.dumps(event, ensure_ascii=False) + "\n")
except Exception:
pass
def _create_llm() -> Any:
"""根据配置文件创建 LLM 实例。"""
try:
from llama_index.llms.openai_like import OpenAILike
except ImportError:
log.error("缺少 llama-index-llms-openai-like,请执行: uv pip install llama-index-llms-openai-like")
raise
from ...config import get_llm_config
llm_config = get_llm_config()
return OpenAILike(
model=llm_config["model"],
api_base=llm_config["api_base"],
api_key=llm_config.get("api_key", "lm-studio"),
temperature=0.1,
max_tokens=65535,
request_timeout=600.0,
is_chat_model=True,
)
def parse_json_response(text: str) -> dict[str, Any]:
"""从 LLM 响应中提取 JSON,处理可能的 Markdown 包裹。
Args:
text: LLM 响应文本。
Returns:
解析后的字典。
"""
text = text.strip()
# 处理 ```json ... ``` 包裹
if "```" in text:
start = text.find("```") + 3
end = text.find("```", start)
if end > start:
text = text[start:end].strip()
# 去掉可能的前缀 (如 "json")
if text.lower().startswith("json"):
text = text[4:].strip()
return cast(dict[str, Any], json.loads(text))
# ------------------------------------------------------------------
# 统一文档提取(多模态,直接传图片给 LLM)
# ------------------------------------------------------------------
def _image_to_base64(image_path: Path) -> str:
"""将图片文件读取为 base64 字符串。"""
with open(image_path, "rb") as f:
return base64.b64encode(f.read()).decode("utf-8")
def _stream_llm_response(
llm: Any,
messages: list[Any],
source_dir: Path | None,
reasoning_effort: str,
log_label: str = "LLM",
) -> str:
"""流式调用 LLM 并写入 SSE 事件(供 llm_query_text 和 _llm_query_multimodal 共用)。
Args:
llm: LLM 实例。
messages: 消息列表。
source_dir: 会话目录(可选,传入时启用 SSE 流式事件写入)。
reasoning_effort: 推理努力级别。
log_label: 日志标签(用于区分"纯文本"和"多模态")。
Returns:
LLM 响应文本。
"""
try:
if source_dir:
_emit_llm_stream(source_dir, "start", label="正在分析文件...")
parts = []
for resp in llm.stream_chat(
messages,
temperature=0.1,
extra_body={"reasoning_effort": reasoning_effort},
):
delta = resp.delta
if delta:
parts.append(delta)
if source_dir:
_emit_llm_stream(source_dir, "chunk", text=delta)
thinking = getattr(resp, "additional_kwargs", {}) or {}
thinking_delta = thinking.get("thinking_delta", "")
if thinking_delta and source_dir:
_emit_llm_stream(source_dir, "reasoning", text=thinking_delta)
text = "".join(parts)
log.info("%s请求完成,响应总长度: %d 字符", log_label, len(text))
if source_dir:
_emit_llm_stream(source_dir, "end", label="分析完成")
return text
except Exception as e:
log.error("%s请求失败: %s", log_label, e)
if source_dir:
_emit_llm_stream(source_dir, "error", error=str(e))
raise
def llm_query_text(
system_prompt: str,
text: str,
reasoning_effort: str = "none",
source_dir: Path | None = None,
) -> str:
"""发送纯文本请求到 LLM(供 Agent 调度使用)。
Args:
system_prompt: 系统提示词。
text: 用户文本。
reasoning_effort: 推理努力级别。
source_dir: 会话目录(可选,传入时启用 SSE 流式事件写入)。
Returns:
LLM 响应文本。
"""
from llama_index.core.base.llms.types import TextBlock
from llama_index.core.llms import ChatMessage
from ...config import get_llm_config
messages = [
ChatMessage(role="system", content=system_prompt),
ChatMessage(role="user", blocks=[TextBlock(text=text)]),
]
llm_config = get_llm_config()
llm = _create_llm()
log.info(
"开始请求 LLM (model=%s, base=%s)",
llm_config["model"],
llm_config["api_base"],
)
return _stream_llm_response(llm, messages, source_dir, reasoning_effort, log_label="LLM")
def extract_document(file_path: Path) -> dict[str, Any]:
"""统一文档提取入口:从任意图片/PDF 中提取结构化信息。
LLM 会根据统一提示词自行判断文档类型(发票/支付记录/出差事前申请单等)。
Args:
file_path: 文件路径(支持 PDF 和图片格式)。
Returns:
包含提取字段的字典。
"""
from ...infra.documents.pdf import render_pdf_to_images
system_prompt = build_invoice_system_prompt()
user_text = f"请分析以下财务文档并提取信息:\n\n文件名: {file_path.name}"
# PDF 先渲染为图片
suffix = file_path.suffix.lower()
if suffix == ".pdf":
image_b64s = render_pdf_to_images(file_path)
else:
image_b64s = [_image_to_base64(file_path)]
if not image_b64s:
log.warning(f"文件渲染为空: {file_path.name}")
return {}
try:
response = _llm_query_multimodal(system_prompt, user_text, image_b64s)
result = parse_json_response(response)
log.info("LLM 文档提取成功: %s", file_path.name)
return result
except Exception as e:
log.error("LLM 文档提取失败: %s (%s)", file_path.name, e)
raise
def _llm_query_multimodal(
system_prompt: str,
text: str | None = None,
image_b64s: list[str] | None = None,
blocks: list[Any] | None = None,
reasoning_effort: str = "none",
source_dir: Path | None = None,
) -> str:
"""发送多模态请求到 LLM(内部使用)。
Args:
system_prompt: 系统提示词。
text: 用户文本(与 image_b64s 配合使用,文本在前、图片在后)。
image_b64s: base64 编码的图片列表。
blocks: 预构建的内容块列表(TextBlock/ImageBlock),传入时忽略 text 和 image_b64s。
source_dir: 会话目录(可选,传入时启用 SSE 流式事件写入)。
Returns:
LLM 响应文本。
"""
from llama_index.core.base.llms.types import ImageBlock, TextBlock
from llama_index.core.llms import ChatMessage
from ...config import get_llm_config
if blocks is not None:
final_blocks = blocks
else:
text = text or ""
image_b64s = image_b64s or []
final_blocks = [TextBlock(text=text)]
for img_b64 in image_b64s:
final_blocks.append(
ImageBlock(
url=f"data:image/jpeg;base64,{img_b64}",
detail="high",
)
)
messages = [
ChatMessage(role="system", content=system_prompt),
ChatMessage(role="user", blocks=final_blocks),
]
llm_config = get_llm_config()
llm = _create_llm()
log.info(
"开始请求 LLM 多模态 (model=%s, base=%s, blocks=%d)",
llm_config["model"],
llm_config["api_base"],
len(final_blocks),
)
return _stream_llm_response(llm, messages, source_dir, reasoning_effort, log_label="LLM多模态")
def load_cache(source_dir: Path) -> dict[str, Any]:
"""从 JSON 缓存目录加载结构化数据,构建 source filename -> 缓存数据的映射。
Args:
source_dir: 源文件目录(包含 .invoice_cache 子目录)。
Returns:
{source_filename: extracted_data} 字典。
额外包含 "travel_info" 键(如果 travel_info.json 存在)。
"""
cache_map: dict[str, Any] = {}
cache_dir = source_dir / CACHE_DIR_NAME
if not cache_dir.exists():
return cache_map
for json_path in sorted(cache_dir.glob("*.json")):
try:
with open(json_path, encoding="utf-8") as f:
cache_data = json.load(f)
if json_path.name in ("travel_info.json", "normal_info.json"):
cache_map[json_path.name.replace(".json", "")] = cache_data
continue
extracted = cache_data.get("extracted_data", {})
src_file = extracted.get("_source_file", "")
if src_file:
cache_map[src_file] = extracted
except Exception as e:
log.warning(f"读取缓存失败 {json_path.name}: {e}")
return cache_map
def load_match_result(source_dir: Path) -> dict[str, list[dict[str, Any]]]:
"""从 JSON 缓存目录加载发票与支付记录的匹配结果。
Args:
source_dir: 源文件目录(包含 .invoice_cache 子目录)。
Returns:
{支付记录源文件 (含金额): [发票信息列表]} 字典。
每个发票信息包含 file, type, amount 字段。
"""
cache_dir = source_dir / CACHE_DIR_NAME
match_path = cache_dir / "match_result.json"
if not match_path.exists():
return {}
try:
with open(match_path, encoding="utf-8") as f:
result: dict[str, list[dict[str, Any]]] = json.load(f)
return result
except Exception as e:
log.warning(f"读取匹配结果缓存失败: {e}")
return {}
def build_extraction_user_message(
cache_map: dict[str, Any],
match_result: dict[str, list[dict[str, Any]]],
previous_analysis: dict[str, Any] | None = None,
user_supplement: str | None = None,
) -> str:
"""构建提取请求的用户消息(供 Agent 调度使用)。
Args:
cache_map: 缓存数据映射。
match_result: 匹配结果。
previous_analysis: 上一轮 LLM 分析结果(可选,补充文件时传入作为历史上下文)。
user_supplement: 用户文字补充(可选,传入时作为修正上下文)。
Returns:
拼接好的用户消息字符串。
"""
parts = [
"以下是本次报销的所有源文件及其提取出的结构化数据。"
"每个源文件的数据来自 OCR 识别和发票信息提取,已按文件名分组展示。"
]
if previous_analysis:
parts.append(
"【上一轮分析结果】"
"以下是上一轮 LLM 对已有文件的分析结果。"
"注意:用户可能已补充新文件,请综合所有数据(含新文件)重新分析。"
"如果新文件填补了之前的信息缺失,请相应更新分析结果。\n"
+ json.dumps(previous_analysis, ensure_ascii=False, indent=2)
)
if user_supplement:
parts.append("【用户文字补充】用户补充了以下文字信息,请据此更新你的分析结果。\n" + user_supplement)
if match_result:
parts.append(
"【发票与支付记录匹配结果】"
"以下数据已将发票信息与对应的支付记录进行关联匹配,"
"用于判断每笔支付对应的发票和商户信息。\n" + json.dumps(match_result, ensure_ascii=False, indent=2)
)
for filename, extracted in cache_map.items():
parts.append(
f"【源文件: {filename}】"
"以下为从该文件提取的结构化发票/支付/申请单数据。\n" + json.dumps(extracted, ensure_ascii=False, indent=2)
)
parts.append("\n=== 请返回 JSON 格式结果 ===")
return "\n".join(parts)
def _extract_info(
source_dir: Path | None,
system_prompt: str,
info_type: str,
) -> dict[str, Any]:
"""通用的信息提取函数:加载缓存、构建消息、调用 LLM 并解析 JSON。
extract_travel_info 和 extract_normal_info 的公共实现。
Args:
source_dir: 源文件目录(必填,包含 .invoice_cache 子目录)。
system_prompt: 系统提示词。
info_type: 信息类型标签("差旅" 或 "普通发票"),用于日志。
Returns:
LLM 提取的结构化信息字典。
"""
if not source_dir:
log.warning("未提供 source_dir,无法加载缓存数据")
return {}
cache_map = load_cache(source_dir)
match_result = load_match_result(source_dir)
user_message = build_extraction_user_message(cache_map, match_result)
log.info("开始构建%s信息提取请求,缓存条目: %d, 匹配结果: %d", info_type, len(cache_map), len(match_result))
try:
response = llm_query_text(
system_prompt=system_prompt,
text=user_message,
reasoning_effort="low",
source_dir=source_dir,
)
result = parse_json_response(response)
log.info("LLM %s信息提取成功", info_type)
return result
except Exception as e:
log.error("LLM %s信息提取失败: %s", info_type, e)
raise
def extract_travel_info(
source_dir: Path | None = None,
) -> dict[str, Any]:
"""根据差旅发票(bot 格式),让 LLM 提取出差相关信息。
纯提取,不包含校验逻辑。校验由 Agent 层调度。
Args:
source_dir: 源文件目录(必填,包含 .invoice_cache 子目录)。
Returns:
包含出差事由、地点、交通工具、时间、住宿信息等字段的字典。
"""
return _extract_info(source_dir, build_travel_info_system_prompt(), "差旅")
def extract_normal_info(
source_dir: Path | None = None,
) -> dict[str, Any]:
"""根据普通发票(非差旅),让 LLM 提取报销相关信息。
纯提取,不包含校验逻辑。校验由 Agent 层调度。
Args:
source_dir: 源文件目录(必填,包含 .invoice_cache 子目录)。
Returns:
包含报销说明、发票总数、总金额、支付方式、附件清单等字段的字典。
"""
return _extract_info(source_dir, build_normal_info_system_prompt(), "普通发票")
+15 -2
View File
@@ -10,14 +10,13 @@ from pathlib import Path
from typing import Any
from ... import get_logger
from ...core.extraction.cache import load_cache, save_match_result
from ...core.extraction.cache import load_cache, save_json, save_match_result
from ...infra.documents.invoice import (
classify_invoice_batch,
save_application_json,
save_csv,
save_invoice_csv,
)
from ...pipeline_core import save_invoice_groups
from .matcher import match_invoices_to_cards
log = get_logger("matching.runner")
@@ -46,6 +45,20 @@ def split_cache(cache_map: dict[str, Any]) -> dict[str, list[dict[str, Any]]]:
return buckets
def save_invoice_groups(session_dir: Path, groups: dict[str, list[dict[str, Any]]]) -> None:
"""写 invoice_groups.json:完整分组 + 计数,供后续阶段与产物判断。"""
data = {
"travel": groups.get("travel", []),
"general": groups.get("general", []),
"application": groups.get("application", []),
"attachments": groups.get("attachments", []),
"travel_count": len(groups.get("travel", [])),
"general_count": len(groups.get("general", [])),
"application_count": len(groups.get("application", [])),
}
save_json(session_dir / "invoice_groups.json", data)
def match_from_cache(case_dir: Path, tolerance: float | None = None) -> dict[str, Any]:
"""按缓存内容执行金额匹配,返回结构化结果。