def open(cls,
profile,
user_agent=None,
on_bind=None,
on_unbind=None,
on_release=None):
""" Open a Bolt connection to a server.
:param profile: :class:`.ConnectionProfile` detailing how and
where to connect
:param user_agent:
:param on_bind:
:param on_unbind:
:param on_release:
"""
wire = cls._connect(profile)
protocol_version = cls._handshake(wire)
subclass = cls._get_subclass(protocol_version)
if subclass is None:
raise RuntimeError("Unable to agree supported protocol version")
bolt = subclass(wire,
profile, (user_agent or bolt_user_agent()),
on_bind=on_bind,
on_unbind=on_unbind,
on_release=on_release)
bolt.__local_port = wire.local_address.port_number
bolt._hello()
return bolt
def open(cls, profile, user_agent=None, on_bind=None, on_unbind=None,
on_release=None, on_broken=None):
""" Open a Bolt connection to a server.
:param profile: :class:`.ConnectionProfile` detailing how and
where to connect
:param user_agent:
:param on_bind:
:param on_unbind:
:param on_release:
:param on_broken:
:returns: :class:`.Bolt` connection object
:raises: :class:`.ConnectionUnavailable` if a connection cannot
be opened, or a protocol version cannot be agreed
"""
try:
wire = cls._connect(profile, on_broken=on_broken)
protocol_version = cls._handshake(wire)
subclass = cls._get_subclass(protocol_version)
if subclass is None:
raise BoltProtocolError("Unable to agree supported protocol version")
bolt = subclass(wire, profile, (user_agent or bolt_user_agent()),
on_bind=on_bind, on_unbind=on_unbind, on_release=on_release)
bolt.__local_port = wire.local_address.port_number
bolt._hello()
return bolt
except (BoltProtocolError, WireError) as error:
raise_from(ConnectionUnavailable("Cannot open connection to %r" % profile), error)
def test_bolt_user_agent():
agent = bolt_user_agent()
assert agent.startswith("py2neo")
