def create_connection(cls,
connection_configs,
on_done,
custom_ioloop=None,
workflow=None):
"""Implement
:py:classmethod:`pika.adapters.BaseConnection.create_connection()`.
"""
nbio = SelectorIOServicesAdapter(custom_ioloop or IOLoop())
def connection_factory(params):
"""Connection factory."""
if params is None:
raise ValueError('Expected pika.connection.Parameters '
'instance, but got None in params arg.')
return cls(parameters=params,
custom_ioloop=nbio,
internal_connection_workflow=False)
return cls._start_connection_workflow(
connection_configs=connection_configs,
connection_factory=connection_factory,
nbio=nbio,
workflow=workflow,
on_done=on_done)
def test_with_select_connection_io_services(self):
# Test entry point for `select_connection.IOLoop`-based async services
# implementation.
from pika.adapters.select_connection import IOLoop
from pika.adapters.utils.selector_ioloop_adapter import (
SelectorIOServicesAdapter)
native_loop = IOLoop()
self._run_start(
nbio_factory=lambda: SelectorIOServicesAdapter(native_loop),
native_loop=native_loop)
def __init__(
self, # pylint: disable=R0913
parameters=None,
on_open_callback=None,
on_open_error_callback=None,
on_close_callback=None,
custom_ioloop=None,
internal_connection_workflow=True):
"""Create a new instance of the Connection object.
:param pika.connection.Parameters parameters: Connection parameters
:param callable on_open_callback: Method to call on connection open
:param None | method on_open_error_callback: Called if the connection
can't be established or connection establishment is interrupted by
`Connection.close()`: on_open_error_callback(Connection, exception).
:param None | method on_close_callback: Called when a previously fully
open connection is closed:
`on_close_callback(Connection, exception)`, where `exception` is
either an instance of `exceptions.ConnectionClosed` if closed by
user or broker or exception of another type that describes the cause
of connection failure.
:param None | IOLoop | nbio_interface.AbstractIOServices custom_ioloop:
Provide a custom I/O Loop object.
:param bool internal_connection_workflow: True for autonomous connection
establishment which is default; False for externally-managed
connection workflow via the `create_connection()` factory.
:raises: RuntimeError
"""
if isinstance(custom_ioloop, nbio_interface.AbstractIOServices):
nbio = custom_ioloop
else:
nbio = SelectorIOServicesAdapter(custom_ioloop or IOLoop())
super(SelectConnection, self).__init__(
parameters,
on_open_callback,
on_open_error_callback,
on_close_callback,
nbio,
internal_connection_workflow=internal_connection_workflow)
