def __init__(self, connection, **kwargs):
self.connection = connection
self._consumers = set()
self._cycle = None
self._tag_to_queue = {}
self._active_queues = []
self._qos = None
self.closed = False
# instantiate exchange types
self.exchange_types = dict(
(typ, cls(self)) for typ, cls in items(self.exchange_types))
try:
self.channel_id = self.connection._avail_channel_ids.pop()
except IndexError:
raise ResourceError(
'No free channel ids, current={0}, channel_max={1}'.format(
len(self.connection.channels),
self.connection.channel_max),
(20, 10),
)
topts = self.connection.client.transport_options
for opt_name in self.from_transport_options:
try:
setattr(self, opt_name, topts[opt_name])
except KeyError:
pass
def _get_free_channel_id(self):
# Cast to a set for fast lookups, and keep stored as an array
# for lower memory usage.
used_channel_ids = set(self.connection._used_channel_ids)
for channel_id in range(1, self.connection.channel_max + 1):
if channel_id not in used_channel_ids:
self.connection._used_channel_ids.append(channel_id)
return channel_id
raise ResourceError(
'No free channel ids, current={}, channel_max={}'.format(
len(self.connection.channels), self.connection.channel_max),
(20, 10),
)