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# **********************************************************************
#
# Copyright (c) 2003-2013 ZeroC, Inc. All rights reserved.
#
# This copy of Ice is licensed to you under the terms described in the
# ICE_LICENSE file included in this distribution.
#
# **********************************************************************
import threading, Ice
class CallQueue(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self._condVar = threading.Condition()
self._queue = []
self._destroy = False
def add(self, call):
self._condVar.acquire()
self._queue.append(call)
self._condVar.notify()
self._condVar.release()
def destroy(self):
self._condVar.acquire()
self._destroy = True
self._condVar.notify()
self._condVar.release()
def run(self):
while True:
self._condVar.acquire()
while len(self._queue) == 0 and not self._destroy:
self._condVar.wait()
if self._destroy:
self._condVar.release()
break
call = self._queue.pop()
self._condVar.release()
call.execute()
class AsyncCallback(object):
def __init__(self, cb):
self._cb = cb
def response(self, ok, results):
self._cb.ice_response(ok, results)
def exception(self, ex):
self._cb.ice_exception(ex)
class BlobjectCall(object):
def __init__(self, proxy, amdCallback, inParams, curr):
self._proxy = proxy
self._amdCallback = amdCallback
self._inParams = inParams
self._curr = curr
def execute(self):
proxy = self._proxy
if len(self._curr.facet) > 0:
proxy = self._proxy.ice_facet(self._curr.facet)
if "_fwd" in self._curr.ctx and self._curr.ctx["_fwd"] == "o":
proxy = proxy.ice_oneway()
try:
ok, out = proxy.ice_invoke(self._curr.operation, self._curr.mode, self._inParams, self._curr.ctx)
self._amdCallback.ice_response(ok, out)
except Ice.Exception as e:
self._amdCallback.ice_exception(e)
else:
cb = AsyncCallback(self._amdCallback)
proxy.begin_ice_invoke(self._curr.operation, self._curr.mode, self._inParams, cb.response, cb.exception,
None, self._curr.ctx)
class BlobjectAsyncI(Ice.BlobjectAsync):
def __init__(self):
self._queue = CallQueue()
self._queue.start()
self._objects = {}
self._lock = threading.Lock()
def ice_invoke_async(self, amdCallback, inParams, curr):
self._lock.acquire()
proxy = self._objects[curr.id]
assert proxy
self._lock.release()
self._queue.add(BlobjectCall(proxy, amdCallback, inParams, curr))
def add(self, proxy):
self._lock.acquire()
self._objects[proxy.ice_getIdentity()] = proxy.ice_facet("").ice_twoway().ice_router(None)
self._lock.release()
def destroy(self):
self._lock.acquire()
self._queue.destroy()
self._queue.join()
self._lock.release()
class BlobjectI(Ice.Blobject):
def __init__(self):
self._objects = {}
self._lock = threading.Lock()
def ice_invoke(self, inParams, curr):
self._lock.acquire()
proxy = self._objects[curr.id]
self._lock.release()
if len(curr.facet) > 0:
proxy = proxy.ice_facet(curr.facet)
try:
if "_fwd" in curr.ctx and curr.ctx["_fwd"] == "o":
proxy = proxy.ice_oneway()
return proxy.ice_invoke(curr.operation, curr.mode, inParams, curr.ctx)
else:
return proxy.ice_invoke(curr.operation, curr.mode, inParams, curr.ctx)
except Ice.Exception as e:
raise
def add(self, proxy):
self._lock.acquire()
self._objects[proxy.ice_getIdentity()] = proxy.ice_facet("").ice_twoway().ice_router(None)
self._lock.release()
def destroy(self):
pass
class ServantLocatorI(Ice.ServantLocator):
def __init__(self, blobject):
self._blobject = blobject
def locate(self, current):
return self._blobject # and the cookie
def finished(self, current, object, cookie):
pass
def deactivate(self, s):
pass
class RouterI(Ice.Router):
def __init__(self, communicator, sync):
self._adapter = communicator.createObjectAdapterWithEndpoints("forward", "default -h 127.0.0.1")
if sync:
self._blobject = BlobjectI()
else:
self._blobject = BlobjectAsyncI()
self._adapter.addServantLocator(ServantLocatorI(self._blobject), "")
self._blobjectProxy = self._adapter.addWithUUID(self._blobject)
proxy = Ice.RouterPrx.uncheckedCast(self._adapter.addWithUUID(self))
communicator.setDefaultRouter(proxy)
self._adapter.activate()
def useSync(self, sync):
self._locator.useSync(sync)
def getClientProxy(self, current):
return self._blobjectProxy
def getServerProxy(self, current):
assert false
def addProxy(self, proxy, current):
self._blobject.add(proxy)
def addProxies(self, proxies, current):
for p in proxies:
self._blobject.add(p)
def destroy(self):
self._blobject.destroy()
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