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65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
#
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#
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import zmq
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from cStringIO import StringIO
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from thrift.transport.TTransport import TTransportBase, CReadableTransport
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class TZmqClient(TTransportBase, CReadableTransport):
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def __init__(self, ctx, endpoint, sock_type):
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self._sock = ctx.socket(sock_type)
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self._endpoint = endpoint
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self._wbuf = StringIO()
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self._rbuf = StringIO()
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def open(self):
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self._sock.connect(self._endpoint)
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def read(self, size):
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ret = self._rbuf.read(size)
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if len(ret) != 0:
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return ret
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self._read_message()
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return self._rbuf.read(size)
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def _read_message(self):
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msg = self._sock.recv()
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self._rbuf = StringIO(msg)
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def write(self, buf):
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self._wbuf.write(buf)
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def flush(self):
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msg = self._wbuf.getvalue()
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self._wbuf = StringIO()
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self._sock.send(msg)
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# Implement the CReadableTransport interface.
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@property
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def cstringio_buf(self):
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return self._rbuf
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# NOTE: This will probably not actually work.
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def cstringio_refill(self, prefix, reqlen):
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while len(prefix) < reqlen:
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self.read_message()
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prefix += self._rbuf.getvalue()
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self._rbuf = StringIO(prefix)
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return self._rbuf
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