108 lines
2.9 KiB
Python
108 lines
2.9 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Author: freezed <freezed@users.noreply.github.com> 2018-07-26
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Version: 0.1
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Licence: `GNU GPL v3` GNU GPL v3: http://www.gnu.org/licenses/
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Connect to DB
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"""
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import pymysql.cursors
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from config import DB_CONFIG
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class Db():
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"""
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Class doc
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:Test:
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>>> test = Db()
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>>> print(test.message)
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DB «localhost» exist, using it
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"""
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def __init__(self):
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"""
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Class initialiser
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"""
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self.DB_NOT_FOUND = True
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self.MSG = {
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"request": "-- REQUEST #{} : --{}",
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"database": "DB «{}» exist, using it"}
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self.message = ""
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# Connect to the database
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self.connection = pymysql.connect(
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host=DB_CONFIG['host'],
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user=DB_CONFIG['user'],
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password=DB_CONFIG['pass'],
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charset=DB_CONFIG['char'],
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cursorclass=pymysql.cursors.DictCursor)
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try:
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with self.connection.cursor() as cursor:
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# Show DB
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cursor.execute("SHOW DATABASES")
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db_list = cursor.fetchall()
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for idx, unused in enumerate(db_list):
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if DB_CONFIG['db'] in db_list[idx].values():
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DB_NOT_FOUND = False
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cursor.execute("USE {}".format(DB_CONFIG['db']))
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self.message = self.MSG['database'].format(
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DB_CONFIG['host'])
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# No DB, create it
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if DB_NOT_FOUND:
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request_list = self.get_sql_from_file()
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if request_list is not False:
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for idx, sql_request in enumerate(request_list):
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self.message = self.MSG['request'].format(
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idx, sql_request)
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cursor.execute(sql_request + ';')
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except pymysql.err.OperationalError as except_detail:
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print("DB error: «{}»".format(except_detail))
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@staticmethod
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def get_sql_from_file(filename=DB_CONFIG['file']):
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"""
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Get the SQL instruction from a file
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:return: a list of each SQL query whithout the trailing ";"
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:Tests:
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>>> Db.get_sql_from_file('wronq_file.sql')
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File load error : wronq_file.sql
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False
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"""
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from os import path
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# File did not exists
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if path.isfile(filename) is False:
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print("File load error : {}".format(filename))
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return False
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else:
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with open(filename, "r") as sql_file:
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# Split file in list
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ret = sql_file.read().split(';')
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# drop last empty entry
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ret.pop()
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return ret
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def __del__(self):
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""" Object destruction"""
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self.connection.close()
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if __name__ == "__main__":
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""" Running doctests """
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import doctest
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doctest.testmod()
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