104 lines
2.8 KiB
Python
104 lines
2.8 KiB
Python
"""Proxy classes and functions."""
|
|
|
|
# Copyright (C) PyZMQ Developers
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
import zmq
|
|
from zmq.devices.basedevice import Device, ThreadDevice, ProcessDevice
|
|
|
|
|
|
class ProxyBase(object):
|
|
"""Base class for overriding methods."""
|
|
|
|
def __init__(self, in_type, out_type, mon_type=zmq.PUB):
|
|
|
|
Device.__init__(self, in_type=in_type, out_type=out_type)
|
|
self.mon_type = mon_type
|
|
self._mon_binds = []
|
|
self._mon_connects = []
|
|
self._mon_sockopts = []
|
|
|
|
def bind_mon(self, addr):
|
|
"""Enqueue ZMQ address for binding on mon_socket.
|
|
|
|
See zmq.Socket.bind for details.
|
|
"""
|
|
self._mon_binds.append(addr)
|
|
|
|
def bind_mon_to_random_port(self, addr, *args, **kwargs):
|
|
"""Enqueue a random port on the given interface for binding on
|
|
mon_socket.
|
|
|
|
See zmq.Socket.bind_to_random_port for details.
|
|
|
|
.. versionadded:: 18.0
|
|
"""
|
|
port = self._reserve_random_port(addr, *args, **kwargs)
|
|
|
|
self.bind_mon('%s:%i' % (addr, port))
|
|
|
|
return port
|
|
|
|
def connect_mon(self, addr):
|
|
"""Enqueue ZMQ address for connecting on mon_socket.
|
|
|
|
See zmq.Socket.connect for details.
|
|
"""
|
|
self._mon_connects.append(addr)
|
|
|
|
def setsockopt_mon(self, opt, value):
|
|
"""Enqueue setsockopt(opt, value) for mon_socket
|
|
|
|
See zmq.Socket.setsockopt for details.
|
|
"""
|
|
self._mon_sockopts.append((opt, value))
|
|
|
|
def _setup_sockets(self):
|
|
ins,outs = Device._setup_sockets(self)
|
|
ctx = self._context
|
|
mons = ctx.socket(self.mon_type)
|
|
|
|
# set sockopts (must be done first, in case of zmq.IDENTITY)
|
|
for opt,value in self._mon_sockopts:
|
|
mons.setsockopt(opt, value)
|
|
|
|
for iface in self._mon_binds:
|
|
mons.bind(iface)
|
|
|
|
for iface in self._mon_connects:
|
|
mons.connect(iface)
|
|
|
|
return ins,outs,mons
|
|
|
|
def run_device(self):
|
|
ins,outs,mons = self._setup_sockets()
|
|
zmq.proxy(ins, outs, mons)
|
|
|
|
class Proxy(ProxyBase, Device):
|
|
"""Threadsafe Proxy object.
|
|
|
|
See zmq.devices.Device for most of the spec. This subclass adds a
|
|
<method>_mon version of each <method>_{in|out} method, for configuring the
|
|
monitor socket.
|
|
|
|
A Proxy is a 3-socket ZMQ Device that functions just like a
|
|
QUEUE, except each message is also sent out on the monitor socket.
|
|
|
|
A PUB socket is the most logical choice for the mon_socket, but it is not required.
|
|
"""
|
|
pass
|
|
|
|
class ThreadProxy(ProxyBase, ThreadDevice):
|
|
"""Proxy in a Thread. See Proxy for more."""
|
|
pass
|
|
|
|
class ProcessProxy(ProxyBase, ProcessDevice):
|
|
"""Proxy in a Process. See Proxy for more."""
|
|
pass
|
|
|
|
|
|
__all__ = [
|
|
'Proxy',
|
|
'ThreadProxy',
|
|
'ProcessProxy',
|
|
]
|