mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
648 lines
23 KiB
648 lines
23 KiB
// |
|
// |
|
// Copyright 2016 gRPC authors. |
|
// |
|
// Licensed under the Apache License, Version 2.0 (the "License"); |
|
// you may not use this file except in compliance with the License. |
|
// You may obtain a copy of the License at |
|
// |
|
// http://www.apache.org/licenses/LICENSE-2.0 |
|
// |
|
// Unless required by applicable law or agreed to in writing, software |
|
// distributed under the License is distributed on an "AS IS" BASIS, |
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
// See the License for the specific language governing permissions and |
|
// limitations under the License. |
|
// |
|
// |
|
|
|
#include "test/cpp/end2end/test_service_impl.h" |
|
|
|
#include <string> |
|
#include <thread> |
|
|
|
#include <gtest/gtest.h> |
|
|
|
#include "absl/log/check.h" |
|
#include "absl/log/log.h" |
|
|
|
#include <grpcpp/alarm.h> |
|
#include <grpcpp/security/credentials.h> |
|
#include <grpcpp/server_context.h> |
|
|
|
#include "src/core/util/crash.h" |
|
#include "src/core/util/notification.h" |
|
#include "src/proto/grpc/testing/echo.grpc.pb.h" |
|
#include "test/cpp/util/string_ref_helper.h" |
|
|
|
using std::chrono::system_clock; |
|
|
|
namespace grpc { |
|
namespace testing { |
|
namespace internal { |
|
|
|
// When echo_deadline is requested, deadline seen in the ServerContext is set in |
|
// the response in seconds. |
|
void MaybeEchoDeadline(ServerContextBase* context, const EchoRequest* request, |
|
EchoResponse* response) { |
|
if (request->has_param() && request->param().echo_deadline()) { |
|
gpr_timespec deadline = gpr_inf_future(GPR_CLOCK_REALTIME); |
|
if (context->deadline() != system_clock::time_point::max()) { |
|
Timepoint2Timespec(context->deadline(), &deadline); |
|
} |
|
response->mutable_param()->set_request_deadline(deadline.tv_sec); |
|
} |
|
} |
|
|
|
void CheckServerAuthContext(const ServerContextBase* context, |
|
const std::string& expected_transport_security_type, |
|
const std::string& expected_client_identity) { |
|
std::shared_ptr<const AuthContext> auth_ctx = context->auth_context(); |
|
std::vector<grpc::string_ref> tst = |
|
auth_ctx->FindPropertyValues("transport_security_type"); |
|
EXPECT_EQ(1u, tst.size()); |
|
EXPECT_EQ(expected_transport_security_type, ToString(tst[0])); |
|
if (expected_client_identity.empty()) { |
|
EXPECT_TRUE(auth_ctx->GetPeerIdentityPropertyName().empty()); |
|
EXPECT_TRUE(auth_ctx->GetPeerIdentity().empty()); |
|
EXPECT_FALSE(auth_ctx->IsPeerAuthenticated()); |
|
} else { |
|
auto identity = auth_ctx->GetPeerIdentity(); |
|
EXPECT_TRUE(auth_ctx->IsPeerAuthenticated()); |
|
EXPECT_EQ(1u, identity.size()); |
|
EXPECT_EQ(expected_client_identity, identity[0]); |
|
} |
|
} |
|
|
|
// Returns the number of pairs in metadata that exactly match the given |
|
// key-value pair. Returns -1 if the pair wasn't found. |
|
int MetadataMatchCount( |
|
const std::multimap<grpc::string_ref, grpc::string_ref>& metadata, |
|
const std::string& key, const std::string& value) { |
|
int count = 0; |
|
for (const auto& metadatum : metadata) { |
|
if (ToString(metadatum.first) == key && |
|
ToString(metadatum.second) == value) { |
|
count++; |
|
} |
|
} |
|
return count; |
|
} |
|
|
|
int GetIntValueFromMetadataHelper( |
|
const char* key, |
|
const std::multimap<grpc::string_ref, grpc::string_ref>& metadata, |
|
int default_value) { |
|
if (metadata.find(key) != metadata.end()) { |
|
std::istringstream iss(ToString(metadata.find(key)->second)); |
|
iss >> default_value; |
|
LOG(INFO) << key << " : " << default_value; |
|
} |
|
|
|
return default_value; |
|
} |
|
|
|
int GetIntValueFromMetadata( |
|
const char* key, |
|
const std::multimap<grpc::string_ref, grpc::string_ref>& metadata, |
|
int default_value) { |
|
return GetIntValueFromMetadataHelper(key, metadata, default_value); |
|
} |
|
|
|
void ServerTryCancel(ServerContext* context) { |
|
EXPECT_FALSE(context->IsCancelled()); |
|
context->TryCancel(); |
|
LOG(INFO) << "Server called TryCancel() to cancel the request"; |
|
// Now wait until it's really canceled |
|
while (!context->IsCancelled()) { |
|
gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
|
gpr_time_from_micros(1000, GPR_TIMESPAN))); |
|
} |
|
} |
|
|
|
void ServerTryCancelNonblocking(CallbackServerContext* context) { |
|
EXPECT_FALSE(context->IsCancelled()); |
|
context->TryCancel(); |
|
LOG(INFO) << "Server called TryCancelNonblocking() to cancel the request"; |
|
} |
|
|
|
} // namespace internal |
|
|
|
ServerUnaryReactor* CallbackTestServiceImpl::Echo( |
|
CallbackServerContext* context, const EchoRequest* request, |
|
EchoResponse* response) { |
|
class Reactor : public grpc::ServerUnaryReactor { |
|
public: |
|
Reactor(CallbackTestServiceImpl* service, CallbackServerContext* ctx, |
|
const EchoRequest* request, EchoResponse* response) |
|
: service_(service), ctx_(ctx), req_(request), resp_(response) { |
|
// It should be safe to call IsCancelled here, even though we don't know |
|
// the result. Call it asynchronously to see if we trigger any data races. |
|
// Join it in OnDone (technically that could be blocking but shouldn't be |
|
// for very long). |
|
async_cancel_check_ = std::thread([this] { (void)ctx_->IsCancelled(); }); |
|
|
|
started_ = true; |
|
|
|
if (request->has_param() && |
|
request->param().server_notify_client_when_started()) { |
|
service->signaller_.SignalClientThatRpcStarted(); |
|
// Block on the "wait to continue" decision in a different thread since |
|
// we can't tie up an EM thread with blocking events. We can join it in |
|
// OnDone since it would definitely be done by then. |
|
rpc_wait_thread_ = std::thread([this] { |
|
service_->signaller_.ServerWaitToContinue(); |
|
StartRpc(); |
|
}); |
|
} else { |
|
StartRpc(); |
|
} |
|
} |
|
|
|
void StartRpc() { |
|
if (req_->has_param() && req_->param().server_sleep_us() > 0) { |
|
// Set an alarm for that much time |
|
alarm_.Set( |
|
gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), |
|
gpr_time_from_micros(req_->param().server_sleep_us() * |
|
grpc_test_slowdown_factor(), |
|
GPR_TIMESPAN)), |
|
[this](bool ok) { NonDelayed(ok); }); |
|
return; |
|
} |
|
NonDelayed(true); |
|
} |
|
void OnSendInitialMetadataDone(bool ok) override { |
|
EXPECT_TRUE(ok); |
|
initial_metadata_sent_ = true; |
|
} |
|
void OnCancel() override { |
|
EXPECT_TRUE(started_); |
|
EXPECT_TRUE(ctx_->IsCancelled()); |
|
on_cancel_invoked_ = true; |
|
std::lock_guard<std::mutex> l(cancel_mu_); |
|
cancel_cv_.notify_one(); |
|
} |
|
void OnDone() override { |
|
if (req_->has_param() && req_->param().echo_metadata_initially()) { |
|
EXPECT_TRUE(initial_metadata_sent_); |
|
} |
|
EXPECT_EQ(ctx_->IsCancelled(), on_cancel_invoked_); |
|
// Validate that finishing with a non-OK status doesn't cause cancellation |
|
if (req_->has_param() && req_->param().has_expected_error()) { |
|
EXPECT_FALSE(on_cancel_invoked_); |
|
} |
|
async_cancel_check_.join(); |
|
if (rpc_wait_thread_.joinable()) { |
|
rpc_wait_thread_.join(); |
|
} |
|
if (finish_when_cancelled_.joinable()) { |
|
finish_when_cancelled_.join(); |
|
} |
|
delete this; |
|
} |
|
|
|
private: |
|
void NonDelayed(bool ok) { |
|
if (!ok) { |
|
EXPECT_TRUE(ctx_->IsCancelled()); |
|
Finish(Status::CANCELLED); |
|
return; |
|
} |
|
if (req_->has_param() && req_->param().server_die()) { |
|
LOG(ERROR) << "The request should not reach application handler."; |
|
CHECK(0); |
|
} |
|
if (req_->has_param() && req_->param().has_expected_error()) { |
|
const auto& error = req_->param().expected_error(); |
|
Finish(Status(static_cast<StatusCode>(error.code()), |
|
error.error_message(), error.binary_error_details())); |
|
return; |
|
} |
|
int server_try_cancel = internal::GetIntValueFromMetadata( |
|
kServerTryCancelRequest, ctx_->client_metadata(), DO_NOT_CANCEL); |
|
if (server_try_cancel != DO_NOT_CANCEL) { |
|
// Since this is a unary RPC, by the time this server handler is called, |
|
// the 'request' message is already read from the client. So the |
|
// scenarios in server_try_cancel don't make much sense. Just cancel the |
|
// RPC as long as server_try_cancel is not DO_NOT_CANCEL |
|
EXPECT_FALSE(ctx_->IsCancelled()); |
|
ctx_->TryCancel(); |
|
LOG(INFO) << "Server called TryCancel() to cancel the request"; |
|
FinishWhenCancelledAsync(); |
|
return; |
|
} |
|
resp_->set_message(req_->message()); |
|
internal::MaybeEchoDeadline(ctx_, req_, resp_); |
|
if (service_->host_) { |
|
resp_->mutable_param()->set_host(*service_->host_); |
|
} else if (req_->has_param() && |
|
req_->param().echo_host_from_authority_header()) { |
|
auto authority = ctx_->ExperimentalGetAuthority(); |
|
std::string authority_str(authority.data(), authority.size()); |
|
resp_->mutable_param()->set_host(std::move(authority_str)); |
|
} |
|
if (req_->has_param() && req_->param().client_cancel_after_us()) { |
|
{ |
|
std::unique_lock<std::mutex> lock(service_->mu_); |
|
service_->signal_client_ = true; |
|
} |
|
FinishWhenCancelledAsync(); |
|
return; |
|
} else if (req_->has_param() && req_->param().server_cancel_after_us()) { |
|
alarm_.Set(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
|
gpr_time_from_micros( |
|
req_->param().server_cancel_after_us() * |
|
grpc_test_slowdown_factor(), |
|
GPR_TIMESPAN)), |
|
[this](bool) { Finish(Status::CANCELLED); }); |
|
return; |
|
} else if (!req_->has_param() || !req_->param().skip_cancelled_check()) { |
|
EXPECT_FALSE(ctx_->IsCancelled()); |
|
} |
|
|
|
if (req_->has_param() && req_->param().echo_metadata_initially()) { |
|
const std::multimap<grpc::string_ref, grpc::string_ref>& |
|
client_metadata = ctx_->client_metadata(); |
|
for (const auto& metadatum : client_metadata) { |
|
ctx_->AddInitialMetadata(ToString(metadatum.first), |
|
ToString(metadatum.second)); |
|
} |
|
StartSendInitialMetadata(); |
|
} |
|
|
|
if (req_->has_param() && req_->param().echo_metadata()) { |
|
const std::multimap<grpc::string_ref, grpc::string_ref>& |
|
client_metadata = ctx_->client_metadata(); |
|
for (const auto& metadatum : client_metadata) { |
|
ctx_->AddTrailingMetadata(ToString(metadatum.first), |
|
ToString(metadatum.second)); |
|
} |
|
// Terminate rpc with error and debug info in trailer. |
|
if (req_->param().debug_info().stack_entries_size() || |
|
!req_->param().debug_info().detail().empty()) { |
|
std::string serialized_debug_info = |
|
req_->param().debug_info().SerializeAsString(); |
|
ctx_->AddTrailingMetadata(kDebugInfoTrailerKey, |
|
serialized_debug_info); |
|
Finish(Status::CANCELLED); |
|
return; |
|
} |
|
} |
|
if (req_->has_param() && |
|
(!req_->param().expected_client_identity().empty() || |
|
req_->param().check_auth_context())) { |
|
internal::CheckServerAuthContext( |
|
ctx_, req_->param().expected_transport_security_type(), |
|
req_->param().expected_client_identity()); |
|
} |
|
if (req_->has_param() && req_->param().response_message_length() > 0) { |
|
resp_->set_message( |
|
std::string(req_->param().response_message_length(), '\0')); |
|
} |
|
if (req_->has_param() && req_->param().echo_peer()) { |
|
resp_->mutable_param()->set_peer(ctx_->peer()); |
|
} |
|
Finish(Status::OK); |
|
} |
|
void FinishWhenCancelledAsync() { |
|
finish_when_cancelled_ = std::thread([this] { |
|
std::unique_lock<std::mutex> l(cancel_mu_); |
|
cancel_cv_.wait(l, [this] { return ctx_->IsCancelled(); }); |
|
Finish(Status::CANCELLED); |
|
}); |
|
} |
|
|
|
CallbackTestServiceImpl* const service_; |
|
CallbackServerContext* const ctx_; |
|
const EchoRequest* const req_; |
|
EchoResponse* const resp_; |
|
Alarm alarm_; |
|
std::mutex cancel_mu_; |
|
std::condition_variable cancel_cv_; |
|
bool initial_metadata_sent_ = false; |
|
bool started_ = false; |
|
bool on_cancel_invoked_ = false; |
|
std::thread async_cancel_check_; |
|
std::thread rpc_wait_thread_; |
|
std::thread finish_when_cancelled_; |
|
}; |
|
|
|
return new Reactor(this, context, request, response); |
|
} |
|
|
|
ServerUnaryReactor* CallbackTestServiceImpl::CheckClientInitialMetadata( |
|
CallbackServerContext* context, const SimpleRequest*, SimpleResponse*) { |
|
class Reactor : public grpc::ServerUnaryReactor { |
|
public: |
|
explicit Reactor(CallbackServerContext* ctx) { |
|
EXPECT_EQ(internal::MetadataMatchCount(ctx->client_metadata(), |
|
kCheckClientInitialMetadataKey, |
|
kCheckClientInitialMetadataVal), |
|
1); |
|
EXPECT_EQ(ctx->client_metadata().count(kCheckClientInitialMetadataKey), |
|
1u); |
|
Finish(Status::OK); |
|
} |
|
void OnDone() override { delete this; } |
|
}; |
|
|
|
return new Reactor(context); |
|
} |
|
|
|
ServerReadReactor<EchoRequest>* CallbackTestServiceImpl::RequestStream( |
|
CallbackServerContext* context, EchoResponse* response) { |
|
// If 'server_try_cancel' is set in the metadata, the RPC is cancelled by |
|
// the server by calling ServerContext::TryCancel() depending on the |
|
// value: |
|
// CANCEL_BEFORE_PROCESSING: The RPC is cancelled before the server |
|
// reads any message from the client CANCEL_DURING_PROCESSING: The RPC |
|
// is cancelled while the server is reading messages from the client |
|
// CANCEL_AFTER_PROCESSING: The RPC is cancelled after the server reads |
|
// all the messages from the client |
|
int server_try_cancel = internal::GetIntValueFromMetadata( |
|
kServerTryCancelRequest, context->client_metadata(), DO_NOT_CANCEL); |
|
if (server_try_cancel == CANCEL_BEFORE_PROCESSING) { |
|
internal::ServerTryCancelNonblocking(context); |
|
// Don't need to provide a reactor since the RPC is canceled |
|
return nullptr; |
|
} |
|
|
|
class Reactor : public grpc::ServerReadReactor<EchoRequest> { |
|
public: |
|
Reactor(CallbackServerContext* ctx, EchoResponse* response, |
|
int server_try_cancel) |
|
: ctx_(ctx), |
|
response_(response), |
|
server_try_cancel_(server_try_cancel) { |
|
EXPECT_NE(server_try_cancel, CANCEL_BEFORE_PROCESSING); |
|
response->set_message(""); |
|
|
|
if (server_try_cancel_ == CANCEL_DURING_PROCESSING) { |
|
ctx->TryCancel(); |
|
// Don't wait for it here |
|
} |
|
StartRead(&request_); |
|
setup_done_ = true; |
|
} |
|
void OnDone() override { delete this; } |
|
void OnCancel() override { |
|
EXPECT_TRUE(setup_done_); |
|
EXPECT_TRUE(ctx_->IsCancelled()); |
|
FinishOnce(Status::CANCELLED); |
|
} |
|
void OnReadDone(bool ok) override { |
|
if (ok) { |
|
response_->mutable_message()->append(request_.message()); |
|
num_msgs_read_++; |
|
StartRead(&request_); |
|
} else { |
|
LOG(INFO) << "Read: " << num_msgs_read_ << " messages"; |
|
|
|
if (server_try_cancel_ == CANCEL_DURING_PROCESSING) { |
|
// Let OnCancel recover this |
|
return; |
|
} |
|
if (server_try_cancel_ == CANCEL_AFTER_PROCESSING) { |
|
internal::ServerTryCancelNonblocking(ctx_); |
|
return; |
|
} |
|
FinishOnce(Status::OK); |
|
} |
|
} |
|
|
|
private: |
|
void FinishOnce(const Status& s) { |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
if (!finished_) { |
|
Finish(s); |
|
finished_ = true; |
|
} |
|
} |
|
|
|
CallbackServerContext* const ctx_; |
|
EchoResponse* const response_; |
|
EchoRequest request_; |
|
int num_msgs_read_{0}; |
|
int server_try_cancel_; |
|
std::mutex finish_mu_; |
|
bool finished_{false}; |
|
bool setup_done_{false}; |
|
}; |
|
|
|
return new Reactor(context, response, server_try_cancel); |
|
} |
|
|
|
// Return 'kNumResponseStreamMsgs' messages. |
|
// TODO(yangg) make it generic by adding a parameter into EchoRequest |
|
ServerWriteReactor<EchoResponse>* CallbackTestServiceImpl::ResponseStream( |
|
CallbackServerContext* context, const EchoRequest* request) { |
|
// If 'server_try_cancel' is set in the metadata, the RPC is cancelled by |
|
// the server by calling ServerContext::TryCancel() depending on the |
|
// value: |
|
// CANCEL_BEFORE_PROCESSING: The RPC is cancelled before the server |
|
// reads any message from the client CANCEL_DURING_PROCESSING: The RPC |
|
// is cancelled while the server is reading messages from the client |
|
// CANCEL_AFTER_PROCESSING: The RPC is cancelled after the server reads |
|
// all the messages from the client |
|
int server_try_cancel = internal::GetIntValueFromMetadata( |
|
kServerTryCancelRequest, context->client_metadata(), DO_NOT_CANCEL); |
|
if (server_try_cancel == CANCEL_BEFORE_PROCESSING) { |
|
internal::ServerTryCancelNonblocking(context); |
|
} |
|
|
|
class Reactor : public grpc::ServerWriteReactor<EchoResponse> { |
|
public: |
|
Reactor(CallbackServerContext* ctx, const EchoRequest* request, |
|
int server_try_cancel) |
|
: ctx_(ctx), request_(request), server_try_cancel_(server_try_cancel) { |
|
server_coalescing_api_ = internal::GetIntValueFromMetadata( |
|
kServerUseCoalescingApi, ctx->client_metadata(), 0); |
|
server_responses_to_send_ = internal::GetIntValueFromMetadata( |
|
kServerResponseStreamsToSend, ctx->client_metadata(), |
|
kServerDefaultResponseStreamsToSend); |
|
if (server_try_cancel_ == CANCEL_DURING_PROCESSING) { |
|
ctx->TryCancel(); |
|
} |
|
if (server_try_cancel_ != CANCEL_BEFORE_PROCESSING) { |
|
if (num_msgs_sent_ < server_responses_to_send_) { |
|
NextWrite(); |
|
} |
|
} |
|
setup_done_ = true; |
|
} |
|
void OnDone() override { delete this; } |
|
void OnCancel() override { |
|
EXPECT_TRUE(setup_done_); |
|
EXPECT_TRUE(ctx_->IsCancelled()); |
|
FinishOnce(Status::CANCELLED); |
|
} |
|
void OnWriteDone(bool /*ok*/) override { |
|
if (num_msgs_sent_ < server_responses_to_send_) { |
|
NextWrite(); |
|
} else if (server_coalescing_api_ != 0) { |
|
// We would have already done Finish just after the WriteLast |
|
} else if (server_try_cancel_ == CANCEL_DURING_PROCESSING) { |
|
// Let OnCancel recover this |
|
} else if (server_try_cancel_ == CANCEL_AFTER_PROCESSING) { |
|
internal::ServerTryCancelNonblocking(ctx_); |
|
} else { |
|
FinishOnce(Status::OK); |
|
} |
|
} |
|
|
|
private: |
|
void FinishOnce(const Status& s) { |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
if (!finished_) { |
|
Finish(s); |
|
finished_ = true; |
|
} |
|
} |
|
|
|
void NextWrite() { |
|
response_.set_message(request_->message() + |
|
std::to_string(num_msgs_sent_)); |
|
if (num_msgs_sent_ == server_responses_to_send_ - 1 && |
|
server_coalescing_api_ != 0) { |
|
{ |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
if (!finished_) { |
|
num_msgs_sent_++; |
|
StartWriteLast(&response_, WriteOptions()); |
|
} |
|
} |
|
// If we use WriteLast, we shouldn't wait before attempting Finish |
|
FinishOnce(Status::OK); |
|
} else { |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
if (!finished_) { |
|
num_msgs_sent_++; |
|
StartWrite(&response_); |
|
} |
|
} |
|
} |
|
CallbackServerContext* const ctx_; |
|
const EchoRequest* const request_; |
|
EchoResponse response_; |
|
int num_msgs_sent_{0}; |
|
int server_try_cancel_; |
|
int server_coalescing_api_; |
|
int server_responses_to_send_; |
|
std::mutex finish_mu_; |
|
bool finished_{false}; |
|
bool setup_done_{false}; |
|
}; |
|
return new Reactor(context, request, server_try_cancel); |
|
} |
|
|
|
ServerBidiReactor<EchoRequest, EchoResponse>* |
|
CallbackTestServiceImpl::BidiStream(CallbackServerContext* context) { |
|
class Reactor : public grpc::ServerBidiReactor<EchoRequest, EchoResponse> { |
|
public: |
|
explicit Reactor(CallbackServerContext* ctx) : ctx_(ctx) { |
|
// If 'server_try_cancel' is set in the metadata, the RPC is cancelled by |
|
// the server by calling ServerContext::TryCancel() depending on the |
|
// value: |
|
// CANCEL_BEFORE_PROCESSING: The RPC is cancelled before the server |
|
// reads any message from the client CANCEL_DURING_PROCESSING: The RPC |
|
// is cancelled while the server is reading messages from the client |
|
// CANCEL_AFTER_PROCESSING: The RPC is cancelled after the server reads |
|
// all the messages from the client |
|
server_try_cancel_ = internal::GetIntValueFromMetadata( |
|
kServerTryCancelRequest, ctx->client_metadata(), DO_NOT_CANCEL); |
|
server_write_last_ = internal::GetIntValueFromMetadata( |
|
kServerFinishAfterNReads, ctx->client_metadata(), 0); |
|
client_try_cancel_ = static_cast<bool>(internal::GetIntValueFromMetadata( |
|
kClientTryCancelRequest, ctx->client_metadata(), 0)); |
|
if (server_try_cancel_ == CANCEL_BEFORE_PROCESSING) { |
|
internal::ServerTryCancelNonblocking(ctx); |
|
} else { |
|
if (server_try_cancel_ == CANCEL_DURING_PROCESSING) { |
|
ctx->TryCancel(); |
|
} |
|
StartRead(&request_); |
|
} |
|
setup_done_ = true; |
|
} |
|
void OnDone() override { |
|
{ |
|
// Use the same lock as finish to make sure that OnDone isn't inlined. |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
EXPECT_TRUE(finished_); |
|
finish_thread_.join(); |
|
} |
|
delete this; |
|
} |
|
void OnCancel() override { |
|
cancel_notification_.Notify(); |
|
EXPECT_TRUE(setup_done_); |
|
EXPECT_TRUE(ctx_->IsCancelled()); |
|
FinishOnce(Status::CANCELLED); |
|
} |
|
void OnReadDone(bool ok) override { |
|
if (ok) { |
|
num_msgs_read_++; |
|
response_.set_message(request_.message()); |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
if (!finished_) { |
|
if (num_msgs_read_ == server_write_last_) { |
|
StartWriteLast(&response_, WriteOptions()); |
|
// If we use WriteLast, we shouldn't wait before attempting Finish |
|
} else { |
|
StartWrite(&response_); |
|
return; |
|
} |
|
} |
|
} else if (client_try_cancel_) { |
|
cancel_notification_.WaitForNotificationWithTimeout(absl::Seconds(10)); |
|
EXPECT_TRUE(ctx_->IsCancelled()); |
|
} |
|
|
|
if (server_try_cancel_ == CANCEL_DURING_PROCESSING) { |
|
// Let OnCancel handle this |
|
} else if (server_try_cancel_ == CANCEL_AFTER_PROCESSING) { |
|
internal::ServerTryCancelNonblocking(ctx_); |
|
} else { |
|
FinishOnce(Status::OK); |
|
} |
|
} |
|
void OnWriteDone(bool /*ok*/) override { |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
if (!finished_) { |
|
StartRead(&request_); |
|
} |
|
} |
|
|
|
private: |
|
void FinishOnce(const Status& s) { |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
if (!finished_) { |
|
finished_ = true; |
|
// Finish asynchronously to make sure that there are no deadlocks. |
|
finish_thread_ = std::thread([this, s] { |
|
std::lock_guard<std::mutex> l(finish_mu_); |
|
Finish(s); |
|
}); |
|
} |
|
} |
|
|
|
CallbackServerContext* const ctx_; |
|
EchoRequest request_; |
|
EchoResponse response_; |
|
int num_msgs_read_{0}; |
|
int server_try_cancel_; |
|
int server_write_last_; |
|
std::mutex finish_mu_; |
|
bool finished_{false}; |
|
bool setup_done_{false}; |
|
std::thread finish_thread_; |
|
bool client_try_cancel_ = false; |
|
grpc_core::Notification cancel_notification_; |
|
}; |
|
|
|
return new Reactor(context); |
|
} |
|
|
|
} // namespace testing |
|
} // namespace grpc
|
|
|