On Thu, Feb 21, 2013 at 06:10:35PM +0800, ShaoHe Feng wrote:
> Hi, Adam
> An error arises, when I call json rpc server by AsyncoreReactor. And
> I can call json rpc server successfully by a simple TCPReactor write
> by myself.
> how can I call json Rpc by AsyncoreReactor correctly?
>
> >>> address = ("127.0.0.1", 4044)
> >>> clientsReactor = asyncoreReactor.AsyncoreReactor()
> >>> reactor = TestClientWrapper(clientsReactor.createClient(address))
> >>> jsonAPI = JsonRpcClient(reactor)
> >>> jsonAPI.connect()
> >>> jsonAPI.callMethod("Host.ping", [], 1, 10)
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib64/python2.7/site-packages/yajsonrpc/client.py", line
> 39, in callMethod
> resp = self._transport.recv(timeout=timeout)
> File "/usr/share/vdsm/tests/jsonRpcUtils.py", line 100, in recv
> return self._queue.get(timeout=timeout)[1]
> File "/usr/lib64/python2.7/Queue.py", line 176, in get
> raise Empty
> Queue.Empty
Sheldon,
You and I resolved this problem but I will answer it here as well for the
benefit of everyone.
When using the Asyncore framework, there is a reactor on the server but also on
the client. Asyncore is multi-threaded and an event loop must be started for
the client reactor in order to process the server responses. See
tests/jsonRpcUtils.py:43 for the call to initialize the event loop thread in the
client reactor.
--
Adam Litke <a...@us.ibm.com>
IBM Linux Technology Center
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