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# 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.
cimport cpython
cdef class Call:
def __cinit__(self):
# Create an *empty* call
self.c_call = NULL
self.references = []
def start_batch(self, operations, tag):
if not self.is_valid:
raise ValueError("invalid call object cannot be used from Python")
cdef grpc_call_error result
cdef Operations cy_operations = Operations(operations)
cdef OperationTag operation_tag = OperationTag(tag)
operation_tag.operation_call = self
operation_tag.batch_operations = cy_operations
cpython.Py_INCREF(operation_tag)
with nogil:
result = grpc_call_start_batch(
self.c_call, cy_operations.c_ops, cy_operations.c_nops,
<cpython.PyObject *>operation_tag, NULL)
return result
def cancel(
self, grpc_status_code error_code=GRPC_STATUS__DO_NOT_USE,
details=None):
if not self.is_valid:
raise ValueError("invalid call object cannot be used from Python")
if (details is None) != (error_code == GRPC_STATUS__DO_NOT_USE):
raise ValueError("if error_code is specified, so must details "
"(and vice-versa)")
cdef grpc_call_error result
cdef char *c_details = NULL
if error_code != GRPC_STATUS__DO_NOT_USE:
if isinstance(details, bytes):
pass
elif isinstance(details, basestring):
details = details.encode()
else:
raise TypeError("expected details to be str or bytes")
self.references.append(details)
c_details = details
with nogil:
result = grpc_call_cancel_with_status(
self.c_call, error_code, c_details, NULL)
return result
else:
with nogil:
result = grpc_call_cancel(self.c_call, NULL)
return result
def set_credentials(
self, CallCredentials call_credentials not None):
cdef grpc_call_error result
with nogil:
result = grpc_call_set_credentials(
self.c_call, call_credentials.c_credentials)
return result
def peer(self):
cdef char *peer = NULL
with nogil:
peer = grpc_call_get_peer(self.c_call)
result = <bytes>peer
with nogil:
gpr_free(peer)
return result
def __dealloc__(self):
if self.c_call != NULL:
with nogil:
grpc_call_destroy(self.c_call)
# The object *should* always be valid from Python. Used for debugging.
@property
def is_valid(self):
return self.c_call != NULL
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