Cython refactor of Python C wrapping layer
Also set up environment-related details needed for a smooth Cython
experience: have the test script avoid rebuilding all dependencies if the
virtualenv directory already exists, have the PyPI distribution script
distribute the Cython generated C code rather than the .pyx files.
diff --git a/src/python/src/grpc/_cython/_cygrpc/channel.pyx b/src/python/src/grpc/_cython/_cygrpc/channel.pyx
new file mode 100644
index 0000000..b203138
--- /dev/null
+++ b/src/python/src/grpc/_cython/_cygrpc/channel.pyx
@@ -0,0 +1,84 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from grpc._cython._cygrpc cimport call
+from grpc._cython._cygrpc cimport completion_queue
+from grpc._cython._cygrpc cimport credentials
+from grpc._cython._cygrpc cimport records
+
+
+cdef class Channel:
+
+ def __cinit__(self, target, records.ChannelArgs arguments=None,
+ credentials.ClientCredentials client_credentials=None):
+ cdef grpc.grpc_channel_args *c_arguments = NULL
+ self.c_channel = NULL
+ self.references = []
+ if arguments is not None:
+ c_arguments = &arguments.c_args
+ if isinstance(target, bytes):
+ pass
+ elif isinstance(target, basestring):
+ target = target.encode()
+ else:
+ raise TypeError("expected target to be str or bytes")
+ if client_credentials is None:
+ self.c_channel = grpc.grpc_channel_create(target, c_arguments)
+ else:
+ self.c_channel = grpc.grpc_secure_channel_create(
+ client_credentials.c_credentials, target, c_arguments)
+ self.references.append(client_credentials)
+ self.references.append(target)
+ self.references.append(arguments)
+
+ def create_call(self, completion_queue.CompletionQueue queue not None,
+ method, host, records.Timespec deadline not None):
+ if queue.is_shutting_down:
+ raise ValueError("queue must not be shutting down or shutdown")
+ if isinstance(method, bytes):
+ pass
+ elif isinstance(method, basestring):
+ method = method.encode()
+ else:
+ raise TypeError("expected method to be str or bytes")
+ if isinstance(host, bytes):
+ pass
+ elif isinstance(host, basestring):
+ host = host.encode()
+ else:
+ raise TypeError("expected host to be str or bytes")
+ cdef call.Call operation_call = call.Call()
+ operation_call.references = [self, method, host, queue]
+ operation_call.c_call = grpc.grpc_channel_create_call(
+ self.c_channel, queue.c_completion_queue, method, host, deadline.c_time)
+ return operation_call
+
+ def __dealloc__(self):
+ if self.c_channel != NULL:
+ grpc.grpc_channel_destroy(self.c_channel)