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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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369 lines
13 KiB
369 lines
13 KiB
/* |
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* |
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* Copyright 2016 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* 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, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#include "test/cpp/end2end/test_service_impl.h" |
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#include <string> |
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#include <thread> |
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#include <grpc++/security/credentials.h> |
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#include <grpc++/server_context.h> |
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#include <grpc/support/log.h> |
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#include "src/proto/grpc/testing/echo.grpc.pb.h" |
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#include "test/cpp/util/string_ref_helper.h" |
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#include <gtest/gtest.h> |
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using std::chrono::system_clock; |
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namespace grpc { |
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namespace testing { |
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namespace { |
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// When echo_deadline is requested, deadline seen in the ServerContext is set in |
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// the response in seconds. |
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void MaybeEchoDeadline(ServerContext* context, const EchoRequest* request, |
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EchoResponse* response) { |
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if (request->has_param() && request->param().echo_deadline()) { |
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gpr_timespec deadline = gpr_inf_future(GPR_CLOCK_REALTIME); |
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if (context->deadline() != system_clock::time_point::max()) { |
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Timepoint2Timespec(context->deadline(), &deadline); |
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} |
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response->mutable_param()->set_request_deadline(deadline.tv_sec); |
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} |
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} |
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void CheckServerAuthContext( |
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const ServerContext* context, |
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const grpc::string& expected_transport_security_type, |
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const grpc::string& expected_client_identity) { |
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std::shared_ptr<const AuthContext> auth_ctx = context->auth_context(); |
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std::vector<grpc::string_ref> tst = |
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auth_ctx->FindPropertyValues("transport_security_type"); |
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EXPECT_EQ(1u, tst.size()); |
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EXPECT_EQ(expected_transport_security_type, ToString(tst[0])); |
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if (expected_client_identity.empty()) { |
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EXPECT_TRUE(auth_ctx->GetPeerIdentityPropertyName().empty()); |
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EXPECT_TRUE(auth_ctx->GetPeerIdentity().empty()); |
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EXPECT_FALSE(auth_ctx->IsPeerAuthenticated()); |
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} else { |
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auto identity = auth_ctx->GetPeerIdentity(); |
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EXPECT_TRUE(auth_ctx->IsPeerAuthenticated()); |
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EXPECT_EQ(1u, identity.size()); |
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EXPECT_EQ(expected_client_identity, identity[0]); |
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} |
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} |
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} // namespace |
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Status TestServiceImpl::Echo(ServerContext* context, const EchoRequest* request, |
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EchoResponse* response) { |
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// A bit of sleep to make sure that short deadline tests fail |
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gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), |
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gpr_time_from_millis(2, GPR_TIMESPAN))); |
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if (request->has_param() && request->param().server_die()) { |
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gpr_log(GPR_ERROR, "The request should not reach application handler."); |
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GPR_ASSERT(0); |
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} |
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if (request->has_param() && request->param().has_expected_error()) { |
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const auto& error = request->param().expected_error(); |
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return Status(static_cast<StatusCode>(error.code()), error.error_message(), |
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error.binary_error_details()); |
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} |
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int server_try_cancel = GetIntValueFromMetadata( |
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kServerTryCancelRequest, context->client_metadata(), DO_NOT_CANCEL); |
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if (server_try_cancel > DO_NOT_CANCEL) { |
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// Since this is a unary RPC, by the time this server handler is called, |
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// the 'request' message is already read from the client. So the scenarios |
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// in server_try_cancel don't make much sense. Just cancel the RPC as long |
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// as server_try_cancel is not DO_NOT_CANCEL |
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ServerTryCancel(context); |
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return Status::CANCELLED; |
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} |
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response->set_message(request->message()); |
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MaybeEchoDeadline(context, request, response); |
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if (host_) { |
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response->mutable_param()->set_host(*host_); |
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} |
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if (request->has_param() && request->param().client_cancel_after_us()) { |
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{ |
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std::unique_lock<std::mutex> lock(mu_); |
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signal_client_ = true; |
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} |
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while (!context->IsCancelled()) { |
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gpr_sleep_until(gpr_time_add( |
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gpr_now(GPR_CLOCK_REALTIME), |
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gpr_time_from_micros(request->param().client_cancel_after_us(), |
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GPR_TIMESPAN))); |
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} |
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return Status::CANCELLED; |
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} else if (request->has_param() && |
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request->param().server_cancel_after_us()) { |
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gpr_sleep_until(gpr_time_add( |
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gpr_now(GPR_CLOCK_REALTIME), |
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gpr_time_from_micros(request->param().server_cancel_after_us(), |
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GPR_TIMESPAN))); |
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return Status::CANCELLED; |
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} else if (!request->has_param() || |
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!request->param().skip_cancelled_check()) { |
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EXPECT_FALSE(context->IsCancelled()); |
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} |
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if (request->has_param() && request->param().echo_metadata()) { |
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const std::multimap<grpc::string_ref, grpc::string_ref>& client_metadata = |
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context->client_metadata(); |
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for (std::multimap<grpc::string_ref, grpc::string_ref>::const_iterator |
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iter = client_metadata.begin(); |
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iter != client_metadata.end(); ++iter) { |
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context->AddTrailingMetadata(ToString(iter->first), |
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ToString(iter->second)); |
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} |
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// Terminate rpc with error and debug info in trailer. |
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if (request->param().debug_info().stack_entries_size() || |
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!request->param().debug_info().detail().empty()) { |
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grpc::string serialized_debug_info = |
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request->param().debug_info().SerializeAsString(); |
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context->AddTrailingMetadata(kDebugInfoTrailerKey, serialized_debug_info); |
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return Status::CANCELLED; |
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} |
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} |
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if (request->has_param() && |
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(request->param().expected_client_identity().length() > 0 || |
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request->param().check_auth_context())) { |
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CheckServerAuthContext(context, |
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request->param().expected_transport_security_type(), |
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request->param().expected_client_identity()); |
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} |
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if (request->has_param() && request->param().response_message_length() > 0) { |
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response->set_message( |
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grpc::string(request->param().response_message_length(), '\0')); |
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} |
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if (request->has_param() && request->param().echo_peer()) { |
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response->mutable_param()->set_peer(context->peer()); |
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} |
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return Status::OK; |
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} |
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// Unimplemented is left unimplemented to test the returned error. |
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Status TestServiceImpl::RequestStream(ServerContext* context, |
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ServerReader<EchoRequest>* reader, |
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EchoResponse* response) { |
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// If 'server_try_cancel' is set in the metadata, the RPC is cancelled by |
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// the server by calling ServerContext::TryCancel() depending on the value: |
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// CANCEL_BEFORE_PROCESSING: The RPC is cancelled before the server reads |
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// any message from the client |
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// CANCEL_DURING_PROCESSING: The RPC is cancelled while the server is |
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// reading messages from the client |
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// CANCEL_AFTER_PROCESSING: The RPC is cancelled after the server reads |
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// all the messages from the client |
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int server_try_cancel = GetIntValueFromMetadata( |
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kServerTryCancelRequest, context->client_metadata(), DO_NOT_CANCEL); |
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// If 'cancel_after_reads' is set in the metadata AND non-zero, the server |
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// will cancel the RPC (by just returning Status::CANCELLED - doesn't call |
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// ServerContext::TryCancel()) after reading the number of records specified |
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// by the 'cancel_after_reads' value set in the metadata. |
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int cancel_after_reads = GetIntValueFromMetadata( |
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kServerCancelAfterReads, context->client_metadata(), 0); |
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EchoRequest request; |
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response->set_message(""); |
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if (server_try_cancel == CANCEL_BEFORE_PROCESSING) { |
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ServerTryCancel(context); |
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return Status::CANCELLED; |
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} |
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std::thread* server_try_cancel_thd = nullptr; |
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if (server_try_cancel == CANCEL_DURING_PROCESSING) { |
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server_try_cancel_thd = |
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new std::thread(&TestServiceImpl::ServerTryCancel, this, context); |
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} |
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int num_msgs_read = 0; |
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while (reader->Read(&request)) { |
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if (cancel_after_reads == 1) { |
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gpr_log(GPR_INFO, "return cancel status"); |
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return Status::CANCELLED; |
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} else if (cancel_after_reads > 0) { |
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cancel_after_reads--; |
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} |
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response->mutable_message()->append(request.message()); |
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} |
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gpr_log(GPR_INFO, "Read: %d messages", num_msgs_read); |
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if (server_try_cancel_thd != nullptr) { |
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server_try_cancel_thd->join(); |
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delete server_try_cancel_thd; |
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return Status::CANCELLED; |
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} |
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if (server_try_cancel == CANCEL_AFTER_PROCESSING) { |
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ServerTryCancel(context); |
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return Status::CANCELLED; |
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} |
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return Status::OK; |
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} |
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// Return 'kNumResponseStreamMsgs' messages. |
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// TODO(yangg) make it generic by adding a parameter into EchoRequest |
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Status TestServiceImpl::ResponseStream(ServerContext* context, |
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const EchoRequest* request, |
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ServerWriter<EchoResponse>* writer) { |
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// If server_try_cancel is set in the metadata, the RPC is cancelled by the |
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// server by calling ServerContext::TryCancel() depending on the value: |
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// CANCEL_BEFORE_PROCESSING: The RPC is cancelled before the server writes |
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// any messages to the client |
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// CANCEL_DURING_PROCESSING: The RPC is cancelled while the server is |
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// writing messages to the client |
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// CANCEL_AFTER_PROCESSING: The RPC is cancelled after the server writes |
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// all the messages to the client |
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int server_try_cancel = GetIntValueFromMetadata( |
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kServerTryCancelRequest, context->client_metadata(), DO_NOT_CANCEL); |
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int server_coalescing_api = GetIntValueFromMetadata( |
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kServerUseCoalescingApi, context->client_metadata(), 0); |
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int server_responses_to_send = GetIntValueFromMetadata( |
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kServerResponseStreamsToSend, context->client_metadata(), |
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kServerDefaultResponseStreamsToSend); |
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if (server_try_cancel == CANCEL_BEFORE_PROCESSING) { |
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ServerTryCancel(context); |
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return Status::CANCELLED; |
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} |
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EchoResponse response; |
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std::thread* server_try_cancel_thd = nullptr; |
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if (server_try_cancel == CANCEL_DURING_PROCESSING) { |
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server_try_cancel_thd = |
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new std::thread(&TestServiceImpl::ServerTryCancel, this, context); |
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} |
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for (int i = 0; i < server_responses_to_send; i++) { |
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response.set_message(request->message() + grpc::to_string(i)); |
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if (i == server_responses_to_send - 1 && server_coalescing_api != 0) { |
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writer->WriteLast(response, WriteOptions()); |
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} else { |
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writer->Write(response); |
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} |
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} |
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if (server_try_cancel_thd != nullptr) { |
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server_try_cancel_thd->join(); |
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delete server_try_cancel_thd; |
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return Status::CANCELLED; |
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} |
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if (server_try_cancel == CANCEL_AFTER_PROCESSING) { |
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ServerTryCancel(context); |
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return Status::CANCELLED; |
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} |
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return Status::OK; |
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} |
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Status TestServiceImpl::BidiStream( |
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ServerContext* context, |
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ServerReaderWriter<EchoResponse, EchoRequest>* stream) { |
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// If server_try_cancel is set in the metadata, the RPC is cancelled by the |
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// server by calling ServerContext::TryCancel() depending on the value: |
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// CANCEL_BEFORE_PROCESSING: The RPC is cancelled before the server reads/ |
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// writes any messages from/to the client |
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// CANCEL_DURING_PROCESSING: The RPC is cancelled while the server is |
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// reading/writing messages from/to the client |
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// CANCEL_AFTER_PROCESSING: The RPC is cancelled after the server |
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// reads/writes all messages from/to the client |
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int server_try_cancel = GetIntValueFromMetadata( |
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kServerTryCancelRequest, context->client_metadata(), DO_NOT_CANCEL); |
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EchoRequest request; |
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EchoResponse response; |
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if (server_try_cancel == CANCEL_BEFORE_PROCESSING) { |
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ServerTryCancel(context); |
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return Status::CANCELLED; |
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} |
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std::thread* server_try_cancel_thd = nullptr; |
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if (server_try_cancel == CANCEL_DURING_PROCESSING) { |
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server_try_cancel_thd = |
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new std::thread(&TestServiceImpl::ServerTryCancel, this, context); |
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} |
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// kServerFinishAfterNReads suggests after how many reads, the server should |
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// write the last message and send status (coalesced using WriteLast) |
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int server_write_last = GetIntValueFromMetadata( |
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kServerFinishAfterNReads, context->client_metadata(), 0); |
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int read_counts = 0; |
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while (stream->Read(&request)) { |
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read_counts++; |
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gpr_log(GPR_INFO, "recv msg %s", request.message().c_str()); |
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response.set_message(request.message()); |
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if (read_counts == server_write_last) { |
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stream->WriteLast(response, WriteOptions()); |
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} else { |
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stream->Write(response); |
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} |
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} |
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if (server_try_cancel_thd != nullptr) { |
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server_try_cancel_thd->join(); |
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delete server_try_cancel_thd; |
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return Status::CANCELLED; |
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} |
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if (server_try_cancel == CANCEL_AFTER_PROCESSING) { |
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ServerTryCancel(context); |
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return Status::CANCELLED; |
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} |
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return Status::OK; |
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} |
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int TestServiceImpl::GetIntValueFromMetadata( |
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const char* key, |
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const std::multimap<grpc::string_ref, grpc::string_ref>& metadata, |
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int default_value) { |
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if (metadata.find(key) != metadata.end()) { |
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std::istringstream iss(ToString(metadata.find(key)->second)); |
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iss >> default_value; |
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gpr_log(GPR_INFO, "%s : %d", key, default_value); |
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} |
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return default_value; |
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} |
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void TestServiceImpl::ServerTryCancel(ServerContext* context) { |
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EXPECT_FALSE(context->IsCancelled()); |
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context->TryCancel(); |
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gpr_log(GPR_INFO, "Server called TryCancel() to cancel the request"); |
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// Now wait until it's really canceled |
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while (!context->IsCancelled()) { |
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gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
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gpr_time_from_micros(1000, GPR_TIMESPAN))); |
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} |
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} |
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} // namespace testing |
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} // namespace grpc
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