68 lines
2.7 KiB
Python
68 lines
2.7 KiB
Python
from zope.interface import implementer
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from zope import component
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from ceo_common.interfaces import IDatabaseService, IConfig
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from ceo_common.errors import DatabaseConnectionError, DatabasePermissionError
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from ceod.utils import gen_password
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from ceod.db.utils import response_is_empty
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from psycopg2 import connect, OperationalError, ProgrammingError
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from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT
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@implementer(IDatabaseService)
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class PostgreSQLService:
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def __init__(self):
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self.type = 'postgresql'
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config = component.getUtility(IConfig)
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self.auth_username = config.get('postgresql_username')
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self.auth_password = config.get('postgresql_password')
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def create_db(self, username: str) -> str:
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password = gen_password()
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search_for_user = f"SELECT FROM pg_roles WHERE rolname='{username}'"
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search_for_db = f"SELECT FROM pg_database WHERE datname='{username}'"
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create_user = f"CREATE USER {username} WITH PASSWORD %(password)s"
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reset_password = f"ALTER USER {username} WITH PASSWORD %(password)s"
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create_database = f"""
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CREATE DATABASE {username} OWNER {username};
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REVOKE ALL ON DATABASE {username} FROM PUBLIC;
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"""
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try:
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with connect(
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host='localhost',
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user=self.auth_username,
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password=self.auth_password,
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) as con:
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con.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
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with con.cursor() as cursor:
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if response_is_empty(search_for_user, con):
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cursor.execute(create_user, {'password': password})
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else:
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cursor.execute(reset_password, {'password': password})
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if response_is_empty(search_for_db, con):
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cursor.execute(create_database)
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return password
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except OperationalError:
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raise DatabaseConnectionError()
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except ProgrammingError:
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raise DatabasePermissionError()
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def delete_db(self, username: str):
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drop_user = f"DROP USER IF EXISTS {username}"
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drop_db = f"DROP DATABASE IF EXISTS {username}"
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try:
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with connect(
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host='localhost',
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user=self.auth_username,
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password=self.auth_password,
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) as con:
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con.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
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with con.cursor() as cursor:
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cursor.execute(drop_user)
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cursor.execute(drop_db)
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except OperationalError:
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raise DatabaseConnectionError()
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except ProgrammingError:
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raise DatabasePermissionError()
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