def connection():
if hasattr(connection, 'db'):
return connection.db
url = DATABASE_URL
u = urlparse(url)
if u.netloc.find('@') > -1:
credentials, host = u.netloc.split('@')
user, password, = credentials.split(':')
neo4j.authenticate(host, user, password)
url = ''.join([u.scheme, '://', host, u.path, u.query])
try:
connection.db = neo4j.GraphDatabaseService(url)
except SocketError as e:
raise SocketError("Error connecting to {0} - {1}".format(url, e))
if connection.db.neo4j_version >= (2, 0):
raise Exception(
"Support for neo4j 2.0 is in progress but not supported by this release."
)
if connection.db.neo4j_version < (1, 8):
raise Exception("Versions of neo4j prior to 1.8 are unsupported.")
return connection.db
def new_session(self):
try:
self.session = neo4j.GraphDatabaseService(self.url)
except SocketError as e:
raise SocketError("Error connecting to {0} - {1}".format(self.url, e))
if self.session.neo4j_version < (2, 0):
raise Exception("Support for neo4j versions prior to 2.0 are "
+ "supported by the 0.x.x series releases of neomodel")
if hasattr(self, 'tx_session'):
delattr(self, 'tx_session')