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Merge pull request #3159 from xinnan-tech/perf-tool-call-optimization
fix:优化对话过程中JSON闭合符号清理的问题
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@@ -2,6 +2,7 @@ import os
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import sys
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import copy
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import json
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import re
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import uuid
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import time
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import queue
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@@ -1016,21 +1017,28 @@ class ConnectionHandler:
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self._merge_tool_calls(tool_calls_list, tools_call)
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# 流式提取 direct_answer 的 response 参数,实时送 TTS
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# 使用安全缓冲区,防止 JSON 闭合符号泄漏到 TTS
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_DA_STREAM_BUFFER = 5
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for tc in tool_calls_list:
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if tc["name"] == "direct_answer" and tc.get("arguments"):
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da_text = self._extract_direct_answer_response(tc["arguments"])
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sent_len = tc.get("_da_sent", 0)
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if da_text and len(da_text) > sent_len:
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new_part = da_text[sent_len:]
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tc["_da_sent"] = len(da_text)
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self.tts.tts_text_queue.put(
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TTSMessageDTO(
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sentence_id=current_sentence_id,
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sentence_type=SentenceType.MIDDLE,
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content_type=ContentType.TEXT,
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content_detail=new_part,
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)
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)
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safe_end = max(sent_len, len(da_text) - _DA_STREAM_BUFFER)
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if safe_end > sent_len:
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new_part = da_text[sent_len:safe_end]
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# 清理 delta 中可能泄漏的 JSON 闭合垃圾
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new_part = self._clean_response_garbage(new_part)
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if new_part:
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tc["_da_sent"] = safe_end
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self.tts.tts_text_queue.put(
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TTSMessageDTO(
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sentence_id=current_sentence_id,
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sentence_type=SentenceType.MIDDLE,
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content_type=ContentType.TEXT,
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content_detail=new_part,
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)
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)
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else:
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content = response
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@@ -1112,9 +1120,24 @@ class ConnectionHandler:
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f"模型选择 direct_answer,流式已播报,写入对话历史"
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)
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for tc in direct_answer_calls:
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# 文本已在流式阶段实时播报,这里只写入对话历史
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da_response = self._extract_direct_answer_response(tc.get("arguments", "{}"))
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if da_response:
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# 刷新流式缓冲区中未发送的部分
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sent_len = tc.get("_da_sent", 0)
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remaining = da_response[sent_len:]
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if remaining:
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remaining = self._clean_response_garbage(remaining)
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if remaining:
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self.tts.tts_text_queue.put(
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TTSMessageDTO(
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sentence_id=current_sentence_id,
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sentence_type=SentenceType.MIDDLE,
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content_type=ContentType.TEXT,
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content_detail=remaining,
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)
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)
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# 写入对话历史
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da_response = self._clean_response_garbage(da_response)
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self.tts.store_tts_text(current_sentence_id, da_response)
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self.dialogue.put(Message(role="assistant", content=da_response))
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@@ -1550,15 +1573,21 @@ class ConnectionHandler:
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@staticmethod
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def _extract_direct_answer_response(arguments_str):
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"""从 direct_answer 的参数中提取 response 值。
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支持完整的 JSON 和流式中不完整的 JSON 片段。
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优先使用 json.loads 标准解析,流式阶段 fallback 到字符串提取。
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"""
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if not arguments_str:
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return ""
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# 找到 "response": " 的位置
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# 优先尝试标准 JSON 解析(适用于完整且格式正确的 JSON)
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try:
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data = json.loads(arguments_str)
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if isinstance(data, dict) and "response" in data:
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return data["response"]
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except (json.JSONDecodeError, TypeError):
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pass
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# Fallback:流式阶段 JSON 可能不完整,使用字符串提取
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marker = '"response": "'
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idx = arguments_str.find(marker)
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if idx < 0:
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# 尝试不带空格的格式
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marker = '"response":"'
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idx = arguments_str.find(marker)
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if idx < 0:
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@@ -1574,6 +1603,28 @@ class ConnectionHandler:
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raw = raw.replace('\\"', '"').replace('\\n', '\n').replace('\\\\', '\\')
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return raw
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@staticmethod
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def _clean_response_garbage(text):
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"""清理 response 中可能泄漏的 JSON 闭合符号。
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模型有时会在 response 内容中生成 JSON 闭合字符(如 )"}} 或 '}),
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这些不是故事内容的一部分,需要去除。
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"""
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if not text:
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return text
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# 清理独立一行的 JSON 闭合垃圾(如 )"}} '}} "}} }} } )
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_garbage_chars = frozenset('")\'})')
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lines = text.split('\n')
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cleaned = []
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for line in lines:
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stripped = line.strip()
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if stripped and len(stripped) <= 8 and all(c in _garbage_chars for c in stripped):
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continue
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cleaned.append(line)
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result = '\n'.join(cleaned)
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# 清理末尾残留的 JSON 闭合符号
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result = re.sub(r'["\'}\]]+$', '', result.rstrip()).rstrip()
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return result
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def _merge_tool_calls(self, tool_calls_list, tools_call):
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"""合并工具调用列表
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