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685 lines
30 KiB
Python
685 lines
30 KiB
Python
import logging
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import traceback
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import warnings
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from typing import Any, List, Union, Dict
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import numpy as np
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import orjson
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import pandas as pd
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import requests
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from langchain_community.utilities import SQLDatabase
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from langchain_core.language_models import BaseLLM
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from langchain_core.messages import BaseMessage, SystemMessage, HumanMessage, AIMessage, AIMessageChunk
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from sqlalchemy import select
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from sqlalchemy.orm import load_only
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from apps.ai_model.model_factory import LLMConfig, LLMFactory, get_default_config
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from apps.chat.curd.chat import save_question, save_full_sql_message, save_full_sql_message_and_answer, save_sql, \
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save_error_message, save_sql_exec_data, save_full_chart_message, save_full_chart_message_and_answer, save_chart, \
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finish_record, save_full_analysis_message_and_answer, save_full_predict_message_and_answer, save_predict_data, \
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save_full_select_datasource_message_and_answer, list_records
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from apps.chat.models.chat_model import ChatQuestion, ChatRecord, Chat
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from apps.datasource.crud.datasource import get_table_schema
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from apps.datasource.models.datasource import CoreDatasource
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from apps.db.db import exec_sql
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from apps.system.crud.user import get_user_info
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from common.core.config import settings
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from common.core.deps import SessionDep, CurrentUser
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warnings.filterwarnings("ignore")
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base_message_count_limit = 5
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class LLMService:
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ds: CoreDatasource
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chat_question: ChatQuestion
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record: ChatRecord
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config: LLMConfig
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llm: BaseLLM
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sql_message: List[Union[BaseMessage, dict[str, Any]]] = []
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chart_message: List[Union[BaseMessage, dict[str, Any]]] = []
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history_records: List[ChatRecord] = []
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session: SessionDep
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_current_user: CurrentUser
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def __init__(self, session: SessionDep, current_user: CurrentUser, chat_question: ChatQuestion):
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self.session = session
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self.current_user = current_user
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chat = self.session.query(Chat).filter(Chat.id == chat_question.chat_id).first()
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if not chat:
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raise Exception(f"Chat with id {chat_question.chat_id} not found")
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ds: CoreDatasource | None = None
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if chat.datasource:
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# Get available datasource
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ds = self.session.query(CoreDatasource).filter(CoreDatasource.id == chat.datasource).first()
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if not ds:
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raise Exception("No available datasource configuration found")
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chat_question.engine = ds.type_name if ds.type != 'excel' else 'PostgreSQL'
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history_records: List[ChatRecord] = list(
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map(lambda x: ChatRecord(**x.model_dump()), filter(lambda r: True if r.first_chat != True else False,
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list_records(session=self.session,
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current_user=current_user,
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chart_id=chat_question.chat_id))))
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# get schema
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if ds:
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chat_question.db_schema = get_table_schema(session=self.session, ds=ds)
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db_user = get_user_info(session=self.session, user_id=current_user.id)
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chat_question.lang = db_user.language
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self.ds = CoreDatasource(**ds.model_dump()) if ds else None
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self.chat_question = chat_question
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self.config = get_default_config()
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self.chat_question.ai_modal_id = self.config.model_id
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# Create LLM instance through factory
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llm_instance = LLMFactory.create_llm(self.config)
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self.llm = llm_instance.llm
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self.history_records = history_records
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self.init_messages()
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def init_messages(self):
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# self.agent_executor = create_react_agent(self.llm)
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last_sql_messages = list(
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filter(lambda r: True if r.full_sql_message is not None and r.full_sql_message.strip() != '' else False,
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self.history_records))
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last_sql_message_str = "[]" if last_sql_messages is None or len(last_sql_messages) == 0 else last_sql_messages[
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-1].full_sql_message
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last_chart_messages = list(
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filter(
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lambda r: True if r.full_chart_message is not None and r.full_chart_message.strip() != '' else False,
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self.history_records))
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last_chart_message_str = "[]" if last_chart_messages is None or len(last_chart_messages) == 0 else \
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last_chart_messages[-1].full_chart_message
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last_sql_messages: List[dict[str, Any]] = orjson.loads(last_sql_message_str)
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# todo maybe can configure
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count_limit = 0 - base_message_count_limit
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self.sql_message = []
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if last_sql_messages is None or len(last_sql_messages) == 0:
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# add sys prompt
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self.sql_message.append(SystemMessage(content=self.chat_question.sql_sys_question()))
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else:
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# limit count
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for last_sql_message in last_sql_messages:
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if last_sql_message['type'] == 'system':
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_msg = SystemMessage(content=last_sql_message['content'])
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self.sql_message.append(_msg)
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break
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for last_sql_message in last_sql_messages[count_limit:]:
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_msg: BaseMessage
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if last_sql_message['type'] == 'human':
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_msg = HumanMessage(content=last_sql_message['content'])
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self.sql_message.append(_msg)
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elif last_sql_message['type'] == 'ai':
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_msg = AIMessage(content=last_sql_message['content'])
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self.sql_message.append(_msg)
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last_chart_messages: List[dict[str, Any]] = orjson.loads(last_chart_message_str)
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self.chart_message = []
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if last_chart_messages is None or len(last_chart_messages) == 0:
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# add sys prompt
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self.chart_message.append(SystemMessage(content=self.chat_question.chart_sys_question()))
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else:
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# limit count
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for last_chart_message in last_chart_messages:
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if last_chart_message['type'] == 'system':
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_msg = SystemMessage(content=last_chart_message['content'])
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self.chart_message.append(_msg)
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break
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for last_chart_message in last_chart_messages:
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_msg: BaseMessage
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if last_chart_message['type'] == 'human':
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_msg = HumanMessage(content=last_chart_message['content'])
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self.chart_message.append(_msg)
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elif last_chart_message['type'] == 'ai':
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_msg = AIMessage(content=last_chart_message['content'])
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self.chart_message.append(_msg)
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def init_record(self) -> ChatRecord:
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self.record = save_question(session=self.session, current_user=self.current_user, question=self.chat_question)
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return self.record
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def get_record(self):
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return self.record
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def set_record(self, record: ChatRecord):
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self.record = record
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def get_fields_from_chart(self):
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chart_info = orjson.loads(self.record.chart)
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fields = []
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if chart_info.get('columns') and len(chart_info.get('columns')) > 0:
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for column in chart_info.get('columns'):
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column_str = column.get('value')
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if column.get('value') != column.get('name'):
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column_str = column_str + '(' + column.get('name') + ')'
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fields.append(column_str)
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if chart_info.get('axis'):
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for _type in ['x', 'y', 'series']:
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if chart_info.get('axis').get(_type):
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column = chart_info.get('axis').get(_type)
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column_str = column.get('value')
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if column.get('value') != column.get('name'):
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column_str = column_str + '(' + column.get('name') + ')'
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fields.append(column_str)
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return fields
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def generate_analysis(self, session: SessionDep):
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fields = self.get_fields_from_chart()
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self.chat_question.fields = orjson.dumps(fields).decode()
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self.chat_question.data = orjson.dumps(orjson.loads(self.record.data).get('data')).decode()
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analysis_msg: List[Union[BaseMessage, dict[str, Any]]] = []
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analysis_msg.append(SystemMessage(content=self.chat_question.analysis_sys_question()))
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analysis_msg.append(HumanMessage(content=self.chat_question.analysis_user_question()))
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history_msg = []
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if self.record.full_analysis_message and self.record.full_analysis_message.strip() != '':
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history_msg = orjson.loads(self.record.full_analysis_message)
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self.record = save_full_analysis_message_and_answer(session=session, record_id=self.record.id, answer='',
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full_message=orjson.dumps(history_msg +
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[{'type': msg.type,
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'content': msg.content} for msg
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in
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analysis_msg]).decode())
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full_analysis_text = ''
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res = self.llm.stream(analysis_msg)
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for chunk in res:
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print(chunk)
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if isinstance(chunk, dict):
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full_analysis_text += chunk['content']
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yield chunk['content']
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continue
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if isinstance(chunk, AIMessageChunk):
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full_analysis_text += chunk.content
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yield chunk.content
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continue
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analysis_msg.append(AIMessage(full_analysis_text))
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self.record = save_full_analysis_message_and_answer(session=session, record_id=self.record.id,
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answer=full_analysis_text,
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full_message=orjson.dumps(history_msg +
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[{'type': msg.type,
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'content': msg.content} for msg
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in
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analysis_msg]).decode())
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def generate_predict(self):
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fields = self.get_fields_from_chart()
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self.chat_question.fields = orjson.dumps(fields).decode()
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self.chat_question.data = orjson.dumps(orjson.loads(self.record.data).get('data')).decode()
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predict_msg: List[Union[BaseMessage, dict[str, Any]]] = []
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predict_msg.append(SystemMessage(content=self.chat_question.predict_sys_question()))
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predict_msg.append(HumanMessage(content=self.chat_question.predict_user_question()))
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history_msg = []
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if self.record.full_predict_message and self.record.full_predict_message.strip() != '':
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history_msg = orjson.loads(self.record.full_predict_message)
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self.record = save_full_predict_message_and_answer(session=self.session, record_id=self.record.id, answer='',
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data='',
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full_message=orjson.dumps(history_msg +
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[{'type': msg.type,
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'content': msg.content} for msg
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in
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predict_msg]).decode())
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full_predict_text = ''
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res = self.llm.stream(predict_msg)
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for chunk in res:
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print(chunk)
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if isinstance(chunk, dict):
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full_predict_text += chunk['content']
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yield chunk['content']
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continue
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if isinstance(chunk, AIMessageChunk):
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full_predict_text += chunk.content
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yield chunk.content
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continue
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predict_msg.append(AIMessage(full_predict_text))
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self.record = save_full_predict_message_and_answer(session=self.session, record_id=self.record.id,
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answer=full_predict_text, data='',
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full_message=orjson.dumps(history_msg +
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[{'type': msg.type,
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'content': msg.content} for msg
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in
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predict_msg]).decode())
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def select_datasource(self):
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datasource_msg: List[Union[BaseMessage, dict[str, Any]]] = []
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datasource_msg.append(SystemMessage(self.chat_question.datasource_sys_question()))
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_ds_list = self.session.exec(select(CoreDatasource).options(
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load_only(CoreDatasource.id, CoreDatasource.name, CoreDatasource.description))).all()
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_ds_list_dict = []
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for _ds in _ds_list:
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_ds_list_dict.append({'id': _ds[0].id, 'name': _ds[0].name, 'description': _ds[0].description})
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datasource_msg.append(
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HumanMessage(self.chat_question.datasource_user_question(orjson.dumps(_ds_list_dict).decode())))
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history_msg = []
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if self.record.full_select_datasource_message and self.record.full_select_datasource_message.strip() != '':
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history_msg = orjson.loads(self.record.full_select_datasource_message)
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self.record = save_full_select_datasource_message_and_answer(session=self.session, record_id=self.record.id,
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answer='',
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full_message=orjson.dumps(history_msg +
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[{'type': msg.type,
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'content': msg.content}
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for msg
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in
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datasource_msg]).decode())
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full_text = ''
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res = self.llm.stream(datasource_msg)
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for chunk in res:
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if isinstance(chunk, dict):
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full_text += chunk['content']
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yield chunk['content']
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continue
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if isinstance(chunk, AIMessageChunk):
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full_text += chunk.content
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yield chunk.content
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continue
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datasource_msg.append(AIMessage(full_text))
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json_str = extract_nested_json(full_text)
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_error: Exception | None = None
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_datasource: int | None = None
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_engine_type: str | None = None
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try:
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data = orjson.loads(json_str)
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if data['id'] and data['id'] != 0:
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_datasource = data['id']
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_ds = self.session.query(CoreDatasource).filter(CoreDatasource.id == _datasource).first()
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if not _ds:
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_datasource = None
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raise Exception(f"Datasource configuration with id {_datasource} not found")
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self.ds = CoreDatasource(**_ds.model_dump())
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self.chat_question.engine = _ds.type_name if _ds.type != 'excel' else 'PostgreSQL'
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_engine_type = self.chat_question.engine
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# save chat
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_chat = self.session.query(Chat).filter(Chat.id == self.record.chat_id).first()
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_chat.datasource = _datasource
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_chat.engine_type = _ds.type_name
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self.session.add(_chat)
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self.session.flush()
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self.session.refresh(_chat)
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self.session.commit()
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elif data['fail']:
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raise Exception(data['fail'])
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else:
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raise Exception('No available datasource configuration found')
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except Exception as e:
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_error = e
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self.record = save_full_select_datasource_message_and_answer(session=self.session, record_id=self.record.id,
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answer=full_text, datasource=_datasource,
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engine_type=_engine_type,
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full_message=orjson.dumps(history_msg +
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[{'type': msg.type,
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'content': msg.content}
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for msg
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in
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datasource_msg]).decode())
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self.init_messages()
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if _error:
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raise _error
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def generate_sql(self):
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# append current question
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self.sql_message.append(HumanMessage(self.chat_question.sql_user_question()))
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self.record = save_full_sql_message(session=self.session, record_id=self.record.id,
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full_message=orjson.dumps(
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[{'type': msg.type, 'content': msg.content} for msg in
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self.sql_message]).decode())
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full_sql_text = ''
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res = self.llm.stream(self.sql_message)
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for chunk in res:
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print(chunk)
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if isinstance(chunk, dict):
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full_sql_text += chunk['content']
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yield chunk['content']
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continue
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if isinstance(chunk, AIMessageChunk):
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full_sql_text += chunk.content
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yield chunk.content
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continue
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self.sql_message.append(AIMessage(full_sql_text))
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self.record = save_full_sql_message_and_answer(session=self.session, record_id=self.record.id,
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answer=full_sql_text,
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full_message=orjson.dumps(
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[{'type': msg.type, 'content': msg.content} for msg in
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self.sql_message]).decode())
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def generate_chart(self):
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# append current question
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self.chart_message.append(HumanMessage(self.chat_question.chart_user_question()))
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self.record = save_full_chart_message(session=self.session, record_id=self.record.id,
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full_message=orjson.dumps(
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[{'type': msg.type, 'content': msg.content} for msg in
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self.chart_message]).decode())
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full_chart_text = ''
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res = self.llm.stream(self.chart_message)
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for chunk in res:
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if isinstance(chunk, dict):
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full_chart_text += chunk['content']
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yield chunk['content']
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continue
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if isinstance(chunk, AIMessageChunk):
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full_chart_text += chunk.content
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yield chunk.content
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continue
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self.chart_message.append(AIMessage(full_chart_text))
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self.record = save_full_chart_message_and_answer(session=self.session, record_id=self.record.id,
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answer=full_chart_text,
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full_message=orjson.dumps(
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[{'type': msg.type, 'content': msg.content} for msg in
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self.chart_message]).decode())
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def check_save_sql(self, res: str) -> str:
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json_str = extract_nested_json(res)
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data = orjson.loads(json_str)
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sql = ''
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message = ''
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error = False
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if data['success']:
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sql = data['sql']
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else:
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message = data['message']
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error = True
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if error:
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raise Exception(message)
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if sql.strip() == '':
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raise Exception("SQL query is empty")
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save_sql(session=self.session, sql=sql, record_id=self.record.id)
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self.chat_question.sql = sql
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return sql
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def check_save_chart(self, res: str) -> Dict[str, Any]:
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json_str = extract_nested_json(res)
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data = orjson.loads(json_str)
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chart: Dict[str, Any] = {}
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message = ''
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error = False
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if data['type'] and data['type'] != 'error':
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# todo type check
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chart = data
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elif data['type'] == 'error':
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message = data['reason']
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error = True
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else:
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message = 'Chart is empty'
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error = True
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if error:
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raise Exception(message)
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save_chart(session=self.session, chart=orjson.dumps(chart).decode(), record_id=self.record.id)
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return chart
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def check_save_predict_data(self, res: str) -> Dict[str, Any]:
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json_str = extract_nested_json(res)
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if not json_str:
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json_str = ''
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save_predict_data(session=self.session, record_id=self.record.id, data=json_str)
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return json_str
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def save_error(self, message: str):
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return save_error_message(session=self.session, record_id=self.record.id, message=message)
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|
|
def save_sql_data(self, data_obj: Dict[str, Any]):
|
|
return save_sql_exec_data(session=self.session, record_id=self.record.id,
|
|
data=orjson.dumps(data_obj).decode())
|
|
|
|
def finish(self):
|
|
return finish_record(session=self.session, record_id=self.record.id)
|
|
|
|
def execute_sql(self, sql: str):
|
|
"""Execute SQL query
|
|
|
|
Args:
|
|
ds: Data source instance
|
|
sql: SQL query statement
|
|
|
|
Returns:
|
|
Query results
|
|
"""
|
|
print(f"Executing SQL on ds_id {self.ds.id}: {sql}")
|
|
return exec_sql(self.ds, sql)
|
|
|
|
|
|
def extract_nested_json(text):
|
|
stack = []
|
|
start_index = -1
|
|
results = []
|
|
|
|
for i, char in enumerate(text):
|
|
if char in '{[':
|
|
if not stack: # 记录起始位置
|
|
start_index = i
|
|
stack.append(char)
|
|
elif char in '}]':
|
|
if stack and ((char == '}' and stack[-1] == '{') or (char == ']' and stack[-1] == '[')):
|
|
stack.pop()
|
|
if not stack: # 栈空时截取完整JSON
|
|
json_str = text[start_index:i + 1]
|
|
try:
|
|
orjson.loads(json_str) # 验证有效性
|
|
results.append(json_str)
|
|
except:
|
|
pass
|
|
else:
|
|
stack = [] # 括号不匹配则重置
|
|
if len(results) > 0 and results[0]:
|
|
return results[0]
|
|
return None
|
|
|
|
|
|
def execute_sql_with_db(db: SQLDatabase, sql: str) -> str:
|
|
"""Execute SQL query using SQLDatabase
|
|
|
|
Args:
|
|
db: SQLDatabase instance
|
|
sql: SQL query statement
|
|
|
|
Returns:
|
|
str: Query results formatted as string
|
|
"""
|
|
try:
|
|
# Execute query
|
|
result = db.run(sql)
|
|
|
|
if not result:
|
|
return "Query executed successfully but returned no results."
|
|
|
|
# Format results
|
|
return str(result)
|
|
|
|
except Exception as e:
|
|
error_msg = f"SQL execution failed: {str(e)}"
|
|
logging.error(error_msg)
|
|
raise RuntimeError(error_msg)
|
|
|
|
|
|
def run_task(llm_service: LLMService, session: SessionDep, in_chat: bool = True):
|
|
try:
|
|
# return id
|
|
if in_chat:
|
|
yield orjson.dumps({'type': 'id', 'id': llm_service.get_record().id}).decode() + '\n\n'
|
|
|
|
# select datasource if datasource is none
|
|
if not llm_service.ds:
|
|
ds_res = llm_service.select_datasource()
|
|
|
|
for chunk in ds_res:
|
|
print(chunk)
|
|
if in_chat:
|
|
yield orjson.dumps({'content': chunk, 'type': 'datasource-result'}).decode() + '\n\n'
|
|
if in_chat:
|
|
yield orjson.dumps({'id': llm_service.ds.id, 'datasource_name': llm_service.ds.name,
|
|
'engine_type': llm_service.ds.type_name, 'type': 'datasource'}).decode() + '\n\n'
|
|
|
|
llm_service.chat_question.db_schema = get_table_schema(session=session, ds=llm_service.ds)
|
|
|
|
# generate sql
|
|
sql_res = llm_service.generate_sql()
|
|
full_sql_text = ''
|
|
for chunk in sql_res:
|
|
full_sql_text += chunk
|
|
if in_chat:
|
|
yield orjson.dumps({'content': chunk, 'type': 'sql-result'}).decode() + '\n\n'
|
|
if in_chat:
|
|
yield orjson.dumps({'type': 'info', 'msg': 'sql generated'}).decode() + '\n\n'
|
|
|
|
# filter sql
|
|
print(full_sql_text)
|
|
sql = llm_service.check_save_sql(res=full_sql_text)
|
|
print(sql)
|
|
if in_chat:
|
|
yield orjson.dumps({'content': sql, 'type': 'sql'}).decode() + '\n\n'
|
|
else:
|
|
yield f'```sql\n{sql}\n```\n\n'
|
|
|
|
# execute sql
|
|
result = llm_service.execute_sql(sql=sql)
|
|
llm_service.save_sql_data(data_obj=result)
|
|
if in_chat:
|
|
yield orjson.dumps({'content': orjson.dumps(result).decode(), 'type': 'sql-data'}).decode() + '\n\n'
|
|
|
|
# generate chart
|
|
chart_res = llm_service.generate_chart()
|
|
full_chart_text = ''
|
|
for chunk in chart_res:
|
|
full_chart_text += chunk
|
|
if in_chat:
|
|
yield orjson.dumps({'content': chunk, 'type': 'chart-result'}).decode() + '\n\n'
|
|
if in_chat:
|
|
yield orjson.dumps({'type': 'info', 'msg': 'chart generated'}).decode() + '\n\n'
|
|
|
|
# filter chart
|
|
print(full_chart_text)
|
|
chart = llm_service.check_save_chart(res=full_chart_text)
|
|
print(chart)
|
|
if in_chat:
|
|
yield orjson.dumps({'content': orjson.dumps(chart).decode(), 'type': 'chart'}).decode() + '\n\n'
|
|
else:
|
|
data = []
|
|
_fields = {}
|
|
if chart.get('columns'):
|
|
for _column in chart.get('columns'):
|
|
if _column:
|
|
_fields[_column.get('value')] = _column.get('name')
|
|
if chart.get('axis'):
|
|
if chart.get('axis').get('x'):
|
|
_fields[chart.get('axis').get('x').get('value')] = chart.get('axis').get('x').get('name')
|
|
if chart.get('axis').get('y'):
|
|
_fields[chart.get('axis').get('y').get('value')] = chart.get('axis').get('y').get('name')
|
|
if chart.get('axis').get('series'):
|
|
_fields[chart.get('axis').get('series').get('value')] = chart.get('axis').get('series').get('name')
|
|
_fields_list = []
|
|
_fields_skip = False
|
|
for _data in result.get('data'):
|
|
_row = []
|
|
for field in result.get('fields'):
|
|
_row.append(_data.get(field))
|
|
if not _fields_skip:
|
|
_fields_list.append(field if not _fields.get(field) else _fields.get(field))
|
|
data.append(_row)
|
|
_fields_skip = True
|
|
df = pd.DataFrame(np.array(data), columns=_fields_list)
|
|
markdown_table = df.to_markdown(index=False)
|
|
yield markdown_table + '\n\n'
|
|
|
|
record = llm_service.finish()
|
|
if in_chat:
|
|
yield orjson.dumps({'type': 'finish'}).decode() + '\n\n'
|
|
else:
|
|
# todo generate picture
|
|
if chart['type'] != 'table':
|
|
yield '### generated chart picture\n\n'
|
|
image_url = request_picture(llm_service.record.chat_id, llm_service.record.id, chart, result)
|
|
print(image_url)
|
|
yield f'![{chart["type"]}]({image_url})'
|
|
except Exception as e:
|
|
traceback.print_exc()
|
|
llm_service.save_error(message=str(e))
|
|
if in_chat:
|
|
yield orjson.dumps({'content': str(e), 'type': 'error'}).decode() + '\n\n'
|
|
else:
|
|
yield f'> ❌ **ERROR**\n\n> \n\n> {str(e)}。'
|
|
|
|
|
|
def request_picture(chat_id: int, record_id: int, chart: dict, data: dict):
|
|
file_name = f'c_{chat_id}_r_{record_id}'
|
|
|
|
columns = chart.get('columns') if chart.get('columns') else []
|
|
x = None
|
|
y = None
|
|
series = None
|
|
if chart.get('axis'):
|
|
x = chart.get('axis').get('x')
|
|
y = chart.get('axis').get('y')
|
|
series = chart.get('axis').get('series')
|
|
|
|
axis = []
|
|
for v in columns:
|
|
axis.append({'name': v.get('name'), 'value': v.get('value')})
|
|
if x:
|
|
axis.append({'name': x.get('name'), 'value': x.get('value'), 'type': 'x'})
|
|
if y:
|
|
axis.append({'name': y.get('name'), 'value': y.get('value'), 'type': 'y'})
|
|
if series:
|
|
axis.append({'name': series.get('name'), 'value': series.get('value'), 'type': 'series'})
|
|
|
|
request_obj = {
|
|
"path": (settings.MCP_IMAGE_PATH if settings.MCP_IMAGE_PATH[-1] == '/' else (
|
|
settings.MCP_IMAGE_PATH + '/')) + file_name,
|
|
"type": chart['type'],
|
|
"data": orjson.dumps(data.get('data') if data.get('data') else []).decode(),
|
|
"axis": orjson.dumps(axis).decode(),
|
|
}
|
|
|
|
requests.post(url=settings.MCP_IMAGE_HOST, json=request_obj)
|
|
|
|
return f'{(settings.SERVER_IMAGE_HOST if settings.SERVER_IMAGE_HOST[-1] == "/" else (settings.SERVER_IMAGE_HOST + "/"))}{file_name}.png'
|