1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef BUFFER_WRITER_H 17 #define BUFFER_WRITER_H 18 19 #include <atomic> 20 #include <memory> 21 #include "event_notifier.h" 22 #include "plugin_module_api.h" 23 #include "share_memory_allocator.h" 24 #include "writer.h" 25 26 27 class BufferWriter : public Writer { 28 public: 29 BufferWriter(std::string name, 30 std::string version, 31 uint32_t size, 32 int smbFd, 33 int eventFd, 34 uint32_t pluginId); 35 ~BufferWriter(); 36 long Write(const void* data, size_t size) override; 37 bool Flush() override; 38 bool Clear() override; 39 40 bool WriteMessage(const google::protobuf::Message& pmsg, const std::string& pluginName); 41 private: 42 void DoStats(long bytes); 43 void Report() const; 44 45 private: 46 std::string pluginName_; 47 std::string pluginVersion_; 48 std::shared_ptr<ShareMemoryBlock> shareMemoryBlock_; 49 EventNotifierPtr eventNotifier_ = nullptr; 50 std::chrono::steady_clock::time_point lastFlushTime_; 51 std::atomic<uint64_t> bytesCount_ = 0; 52 std::atomic<uint32_t> bytesPending_ = 0; 53 std::atomic<uint64_t> writeCount_ = 0; 54 std::atomic<uint32_t> flushCount_ = 0; 55 uint32_t pluginId_ = 0; 56 }; 57 58 using BufferWriterPtr = STD_PTR(shared, BufferWriter); 59 60 #endif // BUFFER_WRITER_H 61