177 lines
6.8 KiB
Python
177 lines
6.8 KiB
Python
import asyncio
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import time
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import orjson
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from json_repair import repair_json
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from src.llm_models.utils_model import LLMRequest
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from . import prompt_template
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from .global_logger import logger
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from .knowledge_lib import INVALID_ENTITY
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def _extract_json_from_text(text: str):
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# sourcery skip: assign-if-exp, extract-method
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"""从文本中提取JSON数据的高容错方法"""
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if text is None:
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logger.error("输入文本为None")
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return []
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try:
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fixed_json = repair_json(text)
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if isinstance(fixed_json, str):
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parsed_json = orjson.loads(fixed_json)
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else:
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parsed_json = fixed_json
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# 如果是列表，直接返回
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if isinstance(parsed_json, list):
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return parsed_json
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# 如果是字典且只有一个项目，可能包装了列表
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if isinstance(parsed_json, dict):
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# 如果字典只有一个键，并且值是列表，返回那个列表
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if len(parsed_json) == 1:
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value = next(iter(parsed_json.values()))
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if isinstance(value, list):
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return value
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return parsed_json
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# 其他情况，尝试转换为列表
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logger.warning(f"解析的JSON不是预期格式: {type(parsed_json)}, 内容: {parsed_json}")
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return []
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except Exception as e:
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logger.error(f"JSON提取失败: {e}, 原始文本: {text[:100] if text else 'None'}...")
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return []
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def _entity_extract(llm_req: LLMRequest, paragraph: str) -> list[str]:
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# sourcery skip: reintroduce-else, swap-if-else-branches, use-named-expression
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"""对段落进行实体提取，返回提取出的实体列表（JSON格式）"""
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entity_extract_context = prompt_template.build_entity_extract_context(paragraph)
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# 使用 asyncio.run 来运行异步方法
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try:
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# 如果当前已有事件循环在运行，使用它
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loop = asyncio.get_running_loop()
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future = asyncio.run_coroutine_threadsafe(llm_req.generate_response_async(entity_extract_context), loop)
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response, _ = future.result()
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except RuntimeError:
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# 如果没有运行中的事件循环，直接使用 asyncio.run
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response, _ = asyncio.run(llm_req.generate_response_async(entity_extract_context))
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# 添加调试日志
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logger.debug(f"LLM返回的原始响应: {response}")
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entity_extract_result = _extract_json_from_text(response)
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# 检查返回的是否为有效的实体列表
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if not isinstance(entity_extract_result, list):
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if not isinstance(entity_extract_result, dict):
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raise ValueError(f"实体提取结果格式错误，期望列表但得到: {type(entity_extract_result)}")
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# 尝试常见的键名
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for key in ["entities", "result", "data", "items"]:
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if key in entity_extract_result and isinstance(entity_extract_result[key], list):
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entity_extract_result = entity_extract_result[key]
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break
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else:
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# 如果找不到合适的列表，抛出异常
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raise ValueError(f"实体提取结果格式错误，期望列表但得到: {type(entity_extract_result)}")
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# 过滤无效实体
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entity_extract_result = [
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entity
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for entity in entity_extract_result
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if (entity is not None) and (entity != "") and (entity not in INVALID_ENTITY)
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]
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if not entity_extract_result:
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raise ValueError("实体提取结果为空")
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return entity_extract_result
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def _rdf_triple_extract(llm_req: LLMRequest, paragraph: str, entities: list) -> list[list[str]]:
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"""对段落进行实体提取，返回提取出的实体列表（JSON格式）"""
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rdf_extract_context = prompt_template.build_rdf_triple_extract_context(
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paragraph, entities=orjson.dumps(entities).decode("utf-8")
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)
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# 使用 asyncio.run 来运行异步方法
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try:
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# 如果当前已有事件循环在运行，使用它
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loop = asyncio.get_running_loop()
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future = asyncio.run_coroutine_threadsafe(llm_req.generate_response_async(rdf_extract_context), loop)
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response, _ = future.result()
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except RuntimeError:
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# 如果没有运行中的事件循环，直接使用 asyncio.run
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response, _ = asyncio.run(llm_req.generate_response_async(rdf_extract_context))
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# 添加调试日志
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logger.debug(f"RDF LLM返回的原始响应: {response}")
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rdf_triple_result = _extract_json_from_text(response)
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# 检查返回的是否为有效的三元组列表
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if not isinstance(rdf_triple_result, list):
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if not isinstance(rdf_triple_result, dict):
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raise ValueError(f"RDF三元组提取结果格式错误，期望列表但得到: {type(rdf_triple_result)}")
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# 尝试常见的键名
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for key in ["triples", "result", "data", "items"]:
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if key in rdf_triple_result and isinstance(rdf_triple_result[key], list):
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rdf_triple_result = rdf_triple_result[key]
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break
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else:
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# 如果找不到合适的列表，抛出异常
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raise ValueError(f"RDF三元组提取结果格式错误，期望列表但得到: {type(rdf_triple_result)}")
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# 验证三元组格式
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for triple in rdf_triple_result:
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if (
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not isinstance(triple, list)
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or len(triple) != 3
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or (triple[0] is None or triple[1] is None or triple[2] is None)
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or "" in triple
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):
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raise ValueError("RDF提取结果格式错误")
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return rdf_triple_result
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def info_extract_from_str(
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llm_client_for_ner: LLMRequest, llm_client_for_rdf: LLMRequest, paragraph: str
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) -> tuple[None, None] | tuple[list[str], list[list[str]]]:
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try_count = 0
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while True:
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try:
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entity_extract_result = _entity_extract(llm_client_for_ner, paragraph)
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break
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except Exception as e:
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logger.warning(f"实体提取失败，错误信息：{e}")
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try_count += 1
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if try_count < 3:
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logger.warning("将于5秒后重试")
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time.sleep(5)
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else:
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logger.error("实体提取失败，已达最大重试次数")
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return None, None
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try_count = 0
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while True:
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try:
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rdf_triple_extract_result = _rdf_triple_extract(llm_client_for_rdf, paragraph, entity_extract_result)
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break
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except Exception as e:
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logger.warning(f"实体提取失败，错误信息：{e}")
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try_count += 1
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if try_count < 3:
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logger.warning("将于5秒后重试")
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time.sleep(5)
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else:
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logger.error("实体提取失败，已达最大重试次数")
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return None, None
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return entity_extract_result, rdf_triple_extract_result
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