在Django中使用zerorpc

# rpcs.py
# coding: utf-8from eebo.core.utils.zrpc import rpc
from .models import Ticket
from .serializers import TicketSerializer@rpc.register()
def get_ticket():
t = Ticket.objects.first()
s = TicketSerializer(t)
return s.data@rpc.register(name='ticket_list', stream=True)
def get_tickets(n):
qs = Ticket.objects.all()[:n]
s = TicketSerializer(qs, many=True)
return iter(s.data)

# coding: utf-8import zerorpcclass RPC(object):
@classmethod
def register(cls, name=None, stream=False):
def _wrapper(func):
setattr(cls, name or func.__name__, zerorpc.stream(
lambda self, *args, **kwargs: func(*args, **kwargs)) if stream
else staticmethod(func))
return func return _wrapperrpc = RPC()

# runrpc.py
# coding: utf-8import re
import sys
import imp as _imp
import importlib
from django.conf import settings
from django.core.management.base import BaseCommand, CommandErrorfrom eebo.core.utils.zrpc import rpc, ServerExecMiddlewarenaiveip_re = re.compile(r"""^(?:
(?P<addr>
(?P<ipv4>\d{1,3}(?:\.\d{1,3}){3}) | # IPv4 address
(?P<ipv6>\[[a-fA-F0-9:]+\]) | # IPv6 address
(?P<fqdn>[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*) # FQDN
):)?(?P<port>\d+)$""", re.X)class Command(BaseCommand):
help = "Starts a lightweight RPC server for development." default_addr = '127.0.0.1'
default_port = '4242' def add_arguments(self, parser):
parser.add_argument('addrport',
nargs='?',
help='Optional port number, or ipaddr:port') def handle(self, *args, **options): self.use_ipv6 = False
if not options['addrport']:
self.addr = ''
self.port = self.default_port
else:
m = re.match(naiveip_re, options['addrport'])
if m is None:
raise CommandError('"%s" is not a valid port number '
'or address:port pair.' %
options['addrport'])
self.addr, _ipv4, _ipv6, _fqdn, self.port = m.groups()
if not self.port.isdigit():
raise CommandError("%r is not a valid port number." %
self.port)
if self.addr:
if _ipv6:
self.addr = self.addr[1:-1]
self.use_ipv6 = True
self._raw_ipv6 = True
elif self.use_ipv6 and not _fqdn:
raise CommandError('"%s" is not a valid IPv6 address.' %
self.addr)
if not self.addr:
self.addr = self.default_addr_ipv6 if self.use_ipv6 else self.default_addr
self._raw_ipv6 = self.use_ipv6
self.run(**options) def run(self, **options):
"""Run the server, using the autoreloader if needed."""
self.autodiscover_rpc() server = self.get_server() try:
server.run()
except KeyboardInterrupt:
server.close()
sys.exit(0) def autodiscover_rpc(self, related_name='rpcs'):
for pkg in settings.INSTALLED_APPS:
try:
pkg_path = importlib.import_module(pkg).__path__
except AttributeError:
continue try:
_imp.find_module(related_name, pkg_path)
except ImportError:
continue try:
importlib.import_module('{0}.{1}'.format(pkg, related_name))
except ImportError:
pass def get_server(self, *args, **options):
"""Return the default zerorpc server for the runner."""
import zerorpc
server = zerorpc.Server(rpc, heartbeat=30)
server.bind("tcp://{0}:{1}".format(self.addr, self.port))
# close django old connections
zerorpc.Context.get_instance().register_middleware(ServerExecMiddleware()) # for sentry
try:
from raven.contrib.zerorpc import SentryMiddleware
if hasattr(settings, 'RAVEN_CONFIG'):
sentry = SentryMiddleware(hide_zerorpc_frames=False,
dsn=settings.RAVEN_CONFIG['dsn'])
zerorpc.Context.get_instance().register_middleware(sentry)
except ImportError:
pass return server

# zrpc.py
# coding: utf-8from django.db import close_old_connectionsclass ServerExecMiddleware(object): def server_before_exec(self, request_event):
close_old_connections() def server_after_exec(self, request_event, reply_event):
close_old_connections()

# zrpc.py
# coding: utf-8import os
import zerorpcfrom redis.connection import BlockingConnectionPool
from gevent.queue import LifoQueueclass Connection(object):
def __init__(self, connect_to, heartbeat=30):
self.client = zerorpc.Client(heartbeat=heartbeat)
self.client.connect(connect_to)
self.pid = os.getpid() def disconnect(self):
self.client.close()class RPCClient(object):
def __init__(self, connect_to, heartbeat=30):
self.connection_pool = BlockingConnectionPool(connection_class=Connection,
queue_class=LifoQueue, timeout=heartbeat, connect_to=connect_to, heartbeat=heartbeat) def close(self):
self.connection_pool.disconnect() def __getattr__(self, name):
return lambda *args, **kwargs: self(name, *args, **kwargs) def __call__(self, name, *args, **kwargs):
connection = self.connection_pool.get_connection('')
try:
return getattr(connection.client, name)(*args, **kwargs)
finally:
self.connection_pool.release(connection)

import zmq.green as zmq# patch zmq garbage-collection Thread to use green Context:
from zmq.utils.garbage import gc
gc.context = zmq.Context()