Hi all,
I was trying to launch a GRPC server within an ryu app to talk to my on-switch
client. The code for launching the server is as follows:
server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
xx_service_pb2_grpc.add_XXServicer_to_server(XXServicer(), server)
server.add_insecure_port('[::]:50050')
server.start()
The server class is minimal with only one function printing out client messages
right now
I tried to put this piece of code in start(), __init__() or even outside the
methods, but they all block at server.start(). Normally(such as when running
this code in a standalone python app) this piece of code will just finish right
away without blocking. When blocked, pressing ctrl-c gets me this:
^CException in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 754, in run
self.__target(*self.__args, **self.__kwargs)
File "/usr/local/lib/python2.7/dist-packages/grpc/_server.py", line 673, in
_serve
event = state.completion_queue.poll()
File "src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi", line
114, in grpc._cython.cygrpc.CompletionQueue.poll
(src/python/grpcio/grpc/_cython/cygrpc.c:10482)
KeyboardInterrupt
Apparently the code is stuck at the poll(). I am guessing this has something to
do with the threading.
Any input will be welcome, or experience with running GRPC servers alongside
Ryu apps, thanks!
Best,
Leonard
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