from PLC.Debug import profile, log
from PLC.Faults import *
-if not psycopg2:
- is8bit = re.compile("[\x80-\xff]").search
-
- def unicast(typecast):
- """
- pgdb returns raw UTF-8 strings. This function casts strings that
- appear to contain non-ASCII characters to unicode objects.
- """
-
- def wrapper(*args, **kwds):
- value = typecast(*args, **kwds)
-
- # pgdb always encodes unicode objects as UTF-8 regardless of
- # the DB encoding (and gives you no option for overriding
- # the encoding), so always decode 8-bit objects as UTF-8.
- if isinstance(value, str) and is8bit(value):
- value = unicode(value, "utf-8")
-
- return value
-
- return wrapper
-
- pgdb.pgdbTypeCache.typecast = unicast(pgdb.pgdbTypeCache.typecast)
-
class PostgreSQL:
def __init__(self, api):
self.api = api
def cursor(self):
if self.connection is None:
# (Re)initialize database connection
- if psycopg2:
- try:
- # Try UNIX socket first
- self.connection = psycopg2.connect(user = self.api.config.PLC_DB_USER,
- password = self.api.config.PLC_DB_PASSWORD,
- database = self.api.config.PLC_DB_NAME)
- except psycopg2.OperationalError:
- # Fall back on TCP
- self.connection = psycopg2.connect(user = self.api.config.PLC_DB_USER,
- password = self.api.config.PLC_DB_PASSWORD,
- database = self.api.config.PLC_DB_NAME,
- host = self.api.config.PLC_DB_HOST,
- port = self.api.config.PLC_DB_PORT)
- self.connection.set_client_encoding("UNICODE")
- else:
- self.connection = pgdb.connect(user = self.api.config.PLC_DB_USER,
- password = self.api.config.PLC_DB_PASSWORD,
- host = "%s:%d" % (api.config.PLC_DB_HOST, api.config.PLC_DB_PORT),
- database = self.api.config.PLC_DB_NAME)
+ try:
+ # Try UNIX socket first
+ self.connection = psycopg2.connect(user = self.api.config.PLC_DB_USER,
+ password = self.api.config.PLC_DB_PASSWORD,
+ database = self.api.config.PLC_DB_NAME)
+ except psycopg2.OperationalError:
+ # Fall back on TCP
+ self.connection = psycopg2.connect(user = self.api.config.PLC_DB_USER,
+ password = self.api.config.PLC_DB_PASSWORD,
+ database = self.api.config.PLC_DB_NAME,
+ host = self.api.config.PLC_DB_HOST,
+ port = self.api.config.PLC_DB_PORT)
+ self.connection.set_client_encoding("UNICODE")
(self.rowcount, self.description, self.lastrowid) = \
(None, None, None)