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#
# Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from abc import ABC
import re
import pandas as pd
from peewee import MySQLDatabase, PostgresqlDatabase
from agent.component.base import ComponentBase, ComponentParamBase
class ExeSQLParam(ComponentParamBase):
"""
Define the ExeSQL component parameters.
"""
def __init__(self):
super().__init__()
self.db_type = "mysql"
self.database = ""
self.username = ""
self.host = ""
self.port = 3306
self.password = ""
self.loop = 3
self.top_n = 30
def check(self):
self.check_valid_value(self.db_type, "Choose DB type", ['mysql', 'postgresql', 'mariadb'])
self.check_empty(self.database, "Database name")
self.check_empty(self.username, "database username")
self.check_empty(self.host, "IP Address")
self.check_positive_integer(self.port, "IP Port")
self.check_empty(self.password, "Database password")
self.check_positive_integer(self.top_n, "Number of records")
class ExeSQL(ComponentBase, ABC):
component_name = "ExeSQL"
def _run(self, history, **kwargs):
if not hasattr(self, "_loop"):
setattr(self, "_loop", 0)
if self._loop >= self._param.loop:
self._loop = 0
raise Exception("Maximum loop time exceeds. Can't query the correct data via SQL statement.")
self._loop += 1
ans = self.get_input()
ans = "".join(ans["content"]) if "content" in ans else ""
ans = re.sub(r'^.*?SELECT ', 'SELECT ', repr(ans), flags=re.IGNORECASE)
ans = re.sub(r';.*?SELECT ', '; SELECT ', ans, flags=re.IGNORECASE)
ans = re.sub(r';[^;]*$', r';', ans)
if not ans:
raise Exception("SQL statement not found!")
if self._param.db_type in ["mysql", "mariadb"]:
db = MySQLDatabase(self._param.database, user=self._param.username, host=self._param.host,
port=self._param.port, password=self._param.password)
elif self._param.db_type == 'postgresql':
db = PostgresqlDatabase(self._param.database, user=self._param.username, host=self._param.host,
port=self._param.port, password=self._param.password)
try:
db.connect()
except Exception as e:
raise Exception("Database Connection Failed! \n" + str(e))
sql_res = []
for single_sql in re.split(r';', ans.replace(r"\n", " ")):
if not single_sql:
continue
try:
query = db.execute_sql(single_sql)
if query.rowcount == 0:
sql_res.append({"content": "\nTotal: " + str(query.rowcount) + "\n No record in the database!"})
continue
single_res = pd.DataFrame([i for i in query.fetchmany(size=self._param.top_n)])
single_res.columns = [i[0] for i in query.description]
sql_res.append({"content": "\nTotal: " + str(query.rowcount) + "\n" + single_res.to_markdown()})
except Exception as e:
sql_res.append({"content": "**Error**:" + str(e) + "\nError SQL Statement:" + single_sql})
pass
db.close()
if not sql_res:
return ExeSQL.be_output("")
return pd.DataFrame(sql_res)
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