mirror of https://github.com/grpc/grpc.git
PiperOrigin-RevId: 663460841pull/37312/head
Nana Pang
3 months ago
committed by
Copybara-Service
parent
910953e7ef
commit
8b4a8ebdf9
9 changed files with 170 additions and 2 deletions
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// Copyright 2024 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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#ifndef GRPCPP_SUPPORT_GLOBAL_CALLBACK_HOOK_H |
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#define GRPCPP_SUPPORT_GLOBAL_CALLBACK_HOOK_H |
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#include "absl/functional/function_ref.h" |
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struct grpc_call; |
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namespace grpc { |
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class GlobalCallbackHook { |
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public: |
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virtual ~GlobalCallbackHook() = default; |
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virtual void RunCallback(grpc_call* call, |
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absl::FunctionRef<void()> callback) = 0; |
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protected: |
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// An exception-safe way of invoking a user-specified callback function.
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template <class Func, class... Args> |
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void CatchingCallback(Func&& func, Args&&... args) { |
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#if GRPC_ALLOW_EXCEPTIONS |
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try { |
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func(std::forward<Args>(args)...); |
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} catch (...) { |
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// nothing to return or change here, just don't crash the library
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} |
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#else // GRPC_ALLOW_EXCEPTIONS
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func(std::forward<Args>(args)...); |
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#endif // GRPC_ALLOW_EXCEPTIONS
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} |
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}; |
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class DefaultGlobalCallbackHook final : public GlobalCallbackHook { |
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public: |
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void RunCallback(grpc_call* call, |
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absl::FunctionRef<void()> callback) override { |
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CatchingCallback(callback); |
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} |
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}; |
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std::shared_ptr<GlobalCallbackHook> GetGlobalCallbackHook(); |
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void SetGlobalCallbackHook(GlobalCallbackHook* hook); |
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} // namespace grpc
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#endif // GRPCPP_SUPPORT_GLOBAL_CALLBACK_HOOK_H
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@ -0,0 +1,36 @@ |
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// Copyright 2024 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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#include <memory> |
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#include "absl/base/no_destructor.h" |
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#include "absl/log/check.h" |
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#include <grpcpp/support/global_callback_hook.h> |
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namespace grpc { |
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static absl::NoDestructor<std::shared_ptr<GlobalCallbackHook>> g_callback_hook( |
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std::make_shared<DefaultGlobalCallbackHook>()); |
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std::shared_ptr<GlobalCallbackHook> GetGlobalCallbackHook() { |
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return *g_callback_hook; |
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} |
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void SetGlobalCallbackHook(GlobalCallbackHook* hook) { |
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CHECK(hook != nullptr); |
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CHECK(hook != (*g_callback_hook).get()); |
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*g_callback_hook = std::shared_ptr<GlobalCallbackHook>(hook); |
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} |
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} // namespace grpc
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