/usr/lib/python3/dist-packages/pyngus/container.py is in python3-pyngus 2.2.1-0ubuntu1.
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# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
__all__ = [
"Container"
]
import heapq
import logging
from pyngus.connection import Connection
LOG = logging.getLogger(__name__)
class Container(object):
"""An implementation of an AMQP 1.0 container."""
def __init__(self, name, properties=None):
self._name = name
self._connections = {}
self._properties = properties
def destroy(self):
conns = list(self._connections.values())
for conn in conns:
conn.destroy()
@property
def name(self):
return self._name
def create_connection(self, name, event_handler=None, properties=None):
if name in self._connections:
raise KeyError("connection '%s' already exists" % str(name))
conn = Connection(self, name, event_handler, properties)
if conn:
self._connections[name] = conn
return conn
def need_processing(self):
"""A utility to help determine which connections need
processing. Returns a triple of lists containing those connections that
0) need to read from the network, 1) need to write to the network, 2)
waiting for pending timers to expire. The timer list is sorted with
the connection next expiring at index 0.
"""
readers = []
writers = []
timer_heap = []
for c in iter(self._connections.values()):
if c.needs_input > 0:
readers.append(c)
if c.has_output > 0:
writers.append(c)
if c.deadline:
heapq.heappush(timer_heap, (c.next_tick, c))
timers = []
while timer_heap:
x = heapq.heappop(timer_heap)
timers.append(x[1])
return (readers, writers, timers)
def resolve_sender(self, target_address):
pass
def resolve_receiver(self, source_address):
pass
def get_connection(self, name):
return self._connections.get(name, None)
def remove_connection(self, name):
if name in self._connections:
del self._connections[name]
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