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import unittest
import grpc
from grpc_opentracing import grpcext
from _service import Service
class ClientInterceptor(grpcext.UnaryClientInterceptor,
grpcext.StreamClientInterceptor):
def __init__(self):
self.intercepted = False
def intercept_unary(self, request, metadata, client_info, invoker):
self.intercepted = True
return invoker(request, metadata)
def intercept_stream(self, request_or_iterator, metadata, client_info,
invoker):
self.intercepted = True
return invoker(request_or_iterator, metadata)
class ServerInterceptor(grpcext.UnaryServerInterceptor,
grpcext.StreamServerInterceptor):
def __init__(self):
self.intercepted = False
def intercept_unary(self, request, servicer_context, server_info, handler):
self.intercepted = True
return handler(request, servicer_context)
def intercept_stream(self, request_or_iterator, servicer_context,
server_info, handler):
self.intercepted = True
return handler(request_or_iterator, servicer_context)
class InterceptorTest(unittest.TestCase):
"""Test that RPC calls are intercepted."""
def setUp(self):
self._client_interceptor = ClientInterceptor()
self._server_interceptor = ServerInterceptor()
self._service = Service([self._client_interceptor],
[self._server_interceptor])
def testUnaryUnaryInterception(self):
multi_callable = self._service.unary_unary_multi_callable
request = b'\x01'
expected_response = self._service.handler.handle_unary_unary(request,
None)
response = multi_callable(request)
self.assertEqual(response, expected_response)
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
def testUnaryUnaryInterceptionWithCall(self):
multi_callable = self._service.unary_unary_multi_callable
request = b'\x01'
expected_response = self._service.handler.handle_unary_unary(request,
None)
response, call = multi_callable.with_call(request)
self.assertEqual(response, expected_response)
self.assertIs(grpc.StatusCode.OK, call.code())
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
def testUnaryUnaryInterceptionFuture(self):
multi_callable = self._service.unary_unary_multi_callable
request = b'\x01'
expected_response = self._service.handler.handle_unary_unary(request,
None)
response = multi_callable.future(request).result()
self.assertEqual(response, expected_response)
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
def testUnaryStreamInterception(self):
multi_callable = self._service.unary_stream_multi_callable
request = b'\x01'
expected_response = self._service.handler.handle_unary_stream(request,
None)
response = multi_callable(request)
self.assertEqual(list(response), list(expected_response))
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
def testStreamUnaryInterception(self):
multi_callable = self._service.stream_unary_multi_callable
requests = [b'\x01', b'\x02']
expected_response = self._service.handler.handle_stream_unary(
iter(requests), None)
response = multi_callable(iter(requests))
self.assertEqual(response, expected_response)
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
def testStreamUnaryInterceptionWithCall(self):
multi_callable = self._service.stream_unary_multi_callable
requests = [b'\x01', b'\x02']
expected_response = self._service.handler.handle_stream_unary(
iter(requests), None)
response, call = multi_callable.with_call(iter(requests))
self.assertEqual(response, expected_response)
self.assertIs(grpc.StatusCode.OK, call.code())
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
def testStreamUnaryInterceptionFuture(self):
multi_callable = self._service.stream_unary_multi_callable
requests = [b'\x01', b'\x02']
expected_response = self._service.handler.handle_stream_unary(
iter(requests), None)
response = multi_callable.future(iter(requests)).result()
self.assertEqual(response, expected_response)
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
def testStreamStreamInterception(self):
multi_callable = self._service.stream_stream_multi_callable
requests = [b'\x01', b'\x02']
expected_response = self._service.handler.handle_stream_stream(
iter(requests), None)
response = multi_callable(iter(requests))
self.assertEqual(list(response), list(expected_response))
self.assertTrue(self._client_interceptor.intercepted)
self.assertTrue(self._server_interceptor.intercepted)
class MultiInterceptorTest(unittest.TestCase):
"""Test that you can chain multiple interceptors together."""
def setUp(self):
self._client_interceptors = [ClientInterceptor(), ClientInterceptor()]
self._server_interceptors = [ServerInterceptor(), ServerInterceptor()]
self._service = Service(self._client_interceptors,
self._server_interceptors)
def _clear(self):
for client_interceptor in self._client_interceptors:
client_interceptor.intercepted = False
for server_interceptor in self._server_interceptors:
server_interceptor.intercepted = False
def testUnaryUnaryMultiInterception(self):
multi_callable = self._service.unary_unary_multi_callable
request = b'\x01'
expected_response = self._service.handler.handle_unary_unary(request,
None)
response = multi_callable(request)
self.assertEqual(response, expected_response)
for client_interceptor in self._client_interceptors:
self.assertTrue(client_interceptor.intercepted)
for server_interceptor in self._server_interceptors:
self.assertTrue(server_interceptor.intercepted)
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