| | |
| | | #define TOPIC_NODE_YVKWA6TF |
| | | |
| | | #include "msg.h" |
| | | #include "pubsub.h" |
| | | #include "socket.h" |
| | | #include <atomic> |
| | | #include <memory> |
| | | #include <mutex> |
| | | #include <vector> |
| | | |
| | | using namespace bhome_shm; |
| | | using namespace bhome_msg; |
| | |
| | | class TopicNode |
| | | { |
| | | SharedMemory &shm_; |
| | | MsgRegister info_; |
| | | ProcInfo info_; |
| | | |
| | | SharedMemory &shm() { return shm_; } |
| | | |
| | | public: |
| | | TopicNode(SharedMemory &shm); |
| | | ~TopicNode(); |
| | | bool Register(const MsgRegister &body, MsgCommonReply &reply, const int timeout_ms); |
| | | bool RegisterRPC(const MsgRegisterRPC &body, MsgCommonReply &reply, const int timeout_ms); |
| | | |
| | | // topic node |
| | | bool Register(ProcInfo &proc, MsgCommonReply &reply_body, const int timeout_ms); |
| | | bool Unregister(ProcInfo &proc, MsgCommonReply &reply_body, const int timeout_ms); |
| | | bool Heartbeat(ProcInfo &proc, MsgCommonReply &reply_body, const int timeout_ms); |
| | | bool Heartbeat(const int timeout_ms); |
| | | bool QueryTopicAddress(BHAddress &dest, MsgQueryTopic &query, MsgQueryTopicReply &reply_body, const int timeout_ms); |
| | | bool QueryProcs(BHAddress &dest, MsgQueryProc &query, MsgQueryProcReply &reply_body, const int timeout_ms); |
| | | |
| | | // topic rpc server |
| | | typedef std::function<bool(const std::string &topic, const std::string &data, std::string &reply)> OnRequest; |
| | | bool ServerStart(OnRequest const &cb, const int nworker = 2); |
| | | bool ServerStop(); |
| | | bool ServerRecvRequest(void *&src_info, std::string &topic, std::string &data, const int timeout_ms); |
| | | bool ServerSendReply(void *src_info, const std::string &data, const int timeout_ms); |
| | | typedef std::function<bool(const std::string &client_proc_id, const MsgRequestTopic &request, MsgRequestTopicReply &reply)> ServerSyncCB; |
| | | typedef std::function<void(void *src_info, std::string &client_proc_id, MsgRequestTopic &request)> ServerAsyncCB; |
| | | bool ServerStart(ServerSyncCB const &cb, const int nworker = 2); |
| | | bool ServerStart(ServerAsyncCB const &cb, const int nworker = 2); |
| | | bool ServerRegisterRPC(MsgTopicList &topics, MsgCommonReply &reply, const int timeout_ms); |
| | | bool ServerRecvRequest(void *&src_info, std::string &proc_id, MsgRequestTopic &request, const int timeout_ms); |
| | | bool ServerSendReply(void *src_info, const MsgRequestTopicReply &reply); |
| | | |
| | | // topic client |
| | | typedef std::function<void(const std::string &data)> RequestResultCB; |
| | | typedef std::function<void(const BHMsgHead &head, const MsgRequestTopicReply &reply)> RequestResultCB; |
| | | bool ClientStartWorker(RequestResultCB const &cb, const int nworker = 2); |
| | | bool ClientStopWorker(); |
| | | bool ClientAsyncRequest(const Topic &topic, const void *data, const size_t size, const int timeout_ms, const RequestResultCB &rrcb = RequestResultCB()); |
| | | bool ClientAsyncRequest(const Topic &topic, const std::string &data, const int timeout_ms, const RequestResultCB &rrcb = RequestResultCB()) |
| | | { |
| | | return ClientAsyncRequest(topic, data.data(), data.size(), timeout_ms, rrcb); |
| | | } |
| | | bool ClientSyncRequest(const Topic &topic, const void *data, const size_t size, std::string &out, const int timeout_ms); |
| | | bool ClientSyncRequest(const Topic &topic, const std::string &data, std::string &out, const int timeout_ms) |
| | | { |
| | | return ClientSyncRequest(topic, data.data(), data.size(), out, timeout_ms); |
| | | } |
| | | bool ClientAsyncRequest(const BHAddress &remote_addr, const MsgRequestTopic &request, std::string &msg_id, const RequestResultCB &rrcb = RequestResultCB()); |
| | | bool ClientSyncRequest(const BHAddress &remote_addr, const MsgRequestTopic &request, std::string &proc_id, MsgRequestTopicReply &reply, const int timeout_ms); |
| | | |
| | | void StopAll(); |
| | | // publish |
| | | bool Publish(const MsgPublish &pub, const int timeout_ms); |
| | | |
| | | // subscribe |
| | | typedef std::function<void(const std::string &proc_id, const MsgPublish &data)> SubDataCB; |
| | | bool SubscribeStartWorker(const SubDataCB &tdcb, int nworker = 2); |
| | | bool Subscribe(MsgTopicList &topics, MsgCommonReply &reply_body, const int timeout_ms); |
| | | bool RecvSub(std::string &proc_id, MsgPublish &pub, const int timeout_ms); |
| | | |
| | | void Start(ServerAsyncCB const &server_cb, SubDataCB const &sub_cb, RequestResultCB &client_cb, int nworker = 2); |
| | | void Stop(); |
| | | |
| | | private: |
| | | bool ClientQueryRPCTopic(const Topic &topic, bhome::msg::BHAddress &addr, const int timeout_ms); |
| | | const std::string &proc_id() { return info_.proc().proc_id(); } |
| | | MQId ssn() { return SockNode().id(); } |
| | | bool ClientQueryRPCTopic(const Topic &topic, BHAddress &addr, const int timeout_ms); |
| | | typedef MsgQueryTopicReply::BHNodeAddress NodeAddress; |
| | | int QueryTopicServers(const Topic &topic, std::vector<NodeAddress> &addr, const int timeout_ms); |
| | | const std::string &proc_id() { return info_.proc_id(); } |
| | | |
| | | typedef bhome_msg::BHAddress Address; |
| | | typedef BHAddress Address; |
| | | class TopicQueryCache |
| | | { |
| | | class Impl |
| | | { |
| | | typedef std::unordered_map<Topic, Address> Store; |
| | | Store store_; |
| | | struct TimedRec { |
| | | Address addr_; |
| | | int64_t timestamp_; |
| | | }; |
| | | typedef std::unordered_map<Topic, TimedRec> Records; |
| | | Records records_; |
| | | |
| | | public: |
| | | bool Find(const Topic &topic, Address &addr) |
| | | { |
| | | auto pos = store_.find(topic); |
| | | if (pos != store_.end()) { |
| | | addr = pos->second; |
| | | return true; |
| | | } else { |
| | | return false; |
| | | auto pos = records_.find(topic); |
| | | if (pos != records_.end()) { |
| | | if (NowSec() - pos->second.timestamp_ < NodeTimeoutSec() / 2) { |
| | | addr = pos->second.addr_; |
| | | return true; |
| | | } else { |
| | | LOG_TRACE() << "topic dest cache timeout."; |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | bool Update(const Topic &topic, const Address &addr) |
| | | bool Store(const Topic &topic, const Address &addr) |
| | | { |
| | | store_[topic] = addr; |
| | | records_[topic] = {addr, NowSec()}; |
| | | return true; |
| | | } |
| | | }; |
| | | Synced<Impl> impl_; |
| | | // Impl &impl() |
| | | // { |
| | | // thread_local Impl impl; |
| | | // return impl; |
| | | // } |
| | | |
| | | public: |
| | | bool Find(const Topic &topic, Address &addr) { return impl_->Find(topic, addr); } |
| | | bool Update(const Topic &topic, const Address &addr) { return impl_->Update(topic, addr); } |
| | | bool Store(const Topic &topic, const Address &addr) { return impl_->Store(topic, addr); } |
| | | }; |
| | | |
| | | // some sockets may be the same one, using functions make it easy to change. |
| | | enum { eSockStart, |
| | | eSockNode = eSockStart, |
| | | eSockPub = eSockNode, |
| | | eSockServer, |
| | | eSockClient, |
| | | eSockSub, |
| | | eSockEnd, |
| | | }; |
| | | std::vector<std::shared_ptr<ShmSocket>> sockets_; |
| | | |
| | | auto &SockNode() { return sock_node_; } |
| | | auto &SockSub() { return sock_sub_; } |
| | | auto &SockRequest() { return sock_request_; } |
| | | auto &SockReply() { return sock_reply_; } |
| | | ShmSocket &SockNode() { return *sockets_[eSockNode]; } |
| | | ShmSocket &SockPub() { return *sockets_[eSockPub]; } |
| | | ShmSocket &SockSub() { return *sockets_[eSockSub]; } |
| | | ShmSocket &SockClient() { return *sockets_[eSockClient]; } |
| | | ShmSocket &SockServer() { return *sockets_[eSockServer]; } |
| | | |
| | | ShmSocket sock_node_; |
| | | ShmSocket sock_request_; |
| | | ShmSocket sock_reply_; |
| | | SocketSubscribe sock_sub_; |
| | | void SetProcIndex(int index) |
| | | { |
| | | proc_index_ = index; |
| | | for (int i = eSockStart; i < eSockEnd; ++i) { |
| | | sockets_[i]->SetNodeProc(index, i); |
| | | } |
| | | } |
| | | |
| | | enum State { |
| | | eStateUninited, |
| | | eStateUnregistered, |
| | | eStateOnline, |
| | | eStateOffline // heartbeat fail. |
| | | }; |
| | | void state(const State st) { state_.store(st); } |
| | | void state_cas(State expected, const State val) { state_.compare_exchange_strong(expected, val); } |
| | | State state() const { return state_.load(); } |
| | | bool IsOnline() { return state() == eStateOnline; } |
| | | bool Init(); |
| | | bool Valid() const { return state() != eStateUninited; } |
| | | std::mutex mutex_; |
| | | MQId ssn_id_ = 0; |
| | | std::atomic<State> state_; |
| | | int proc_index_ = -1; |
| | | |
| | | TopicQueryCache topic_query_cache_; |
| | | |
| | | class RecvQ |
| | | { |
| | | public: |
| | | void Write(BHMsgHead &&head, std::string &&body) { q_.push_back({std::move(head), std::move(body)}); } |
| | | bool Read(BHMsgHead &head, std::string &body) |
| | | { |
| | | if (q_.empty()) { |
| | | return false; |
| | | } else { |
| | | head = std::move(q_.front().head); |
| | | body = std::move(q_.front().body); |
| | | q_.pop_front(); |
| | | return true; |
| | | } |
| | | } |
| | | |
| | | private: |
| | | struct MsgData { |
| | | BHMsgHead head; |
| | | std::string body; |
| | | }; |
| | | std::deque<MsgData> q_; |
| | | }; |
| | | Synced<RecvQ> server_buffer_; |
| | | Synced<RecvQ> sub_buffer_; |
| | | }; |
| | | |
| | | #endif // end of include guard: TOPIC_NODE_YVKWA6TF |