pub/mongoengine
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'v0.4' of http://github.com/samuelclay/mongoengine into v0.4

Browse Source
This commit is contained in:
Harry Marr 2010-09-19 19:53:12 +01:00
commit ee72845701
1 changed files with 19 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
mongoengine/connection.py
View File

@ -1,5 +1,5 @@
from pymongo import Connection from pymongo import Connection
import multiprocessing
__all__ = ['ConnectionError', 'connect'] __all__ = ['ConnectionError', 'connect']
@ -8,12 +8,12 @@ _connection_settings = {
'host': 'localhost', 'host': 'localhost',
'port': 27017, 'port': 27017,
} }
_connection = None _connection = {}
_db_name = None _db_name = None
_db_username = None _db_username = None
_db_password = None _db_password = None
_db = None _db = {}
class ConnectionError(Exception): class ConnectionError(Exception):
@ -22,32 +22,39 @@ class ConnectionError(Exception):
def _get_connection(): def _get_connection():
global _connection global _connection
identity = get_identity()
# Connect to the database if not already connected # Connect to the database if not already connected
if _connection is None: if _connection.get(identity) is None:
try: try:
_connection = Connection(**_connection_settings) _connection[identity] = Connection(**_connection_settings)
except: except:
raise ConnectionError('Cannot connect to the database') raise ConnectionError('Cannot connect to the database')
return _connection return _connection[identity]
def _get_db(): def _get_db():
global _db, _connection global _db, _connection
identity = get_identity()
# Connect if not already connected # Connect if not already connected
if _connection is None: if _connection.get(identity) is None:
_connection = _get_connection() _connection[identity] = _get_connection()
if _db is None: if _db.get(identity) is None:
# _db_name will be None if the user hasn't called connect() # _db_name will be None if the user hasn't called connect()
if _db_name is None: if _db_name is None:
raise ConnectionError('Not connected to the database') raise ConnectionError('Not connected to the database')
# Get DB from current connection and authenticate if necessary # Get DB from current connection and authenticate if necessary
_db = _connection[_db_name] _db[identity] = _connection[identity][_db_name]
if _db_username and _db_password: if _db_username and _db_password:
_db.authenticate(_db_username, _db_password) _db[identity].authenticate(_db_username, _db_password)
return _db return _db[identity]
def get_identity():
identity = multiprocessing.current_process()._identity
identity = 0 if not identity else identity[0]
return identity
def connect(db, username=None, password=None, **kwargs): def connect(db, username=None, password=None, **kwargs):
"""Connect to the database specified by the 'db' argument. Connection """Connect to the database specified by the 'db' argument. Connection
settings may be provided here as well if the database is not running on settings may be provided here as well if the database is not running on