/*
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* =====================================================================================
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*
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* Filename: topic_node.cpp
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*
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* Description:
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*
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* Version: 1.0
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* Created: 2021年04月07日 09时01分48秒
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* Revision: none
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* Compiler: gcc
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*
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* Author: Li Chao (),
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* Organization:
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*
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* =====================================================================================
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*/
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#include "topic_node.h"
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#include "bh_util.h"
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#include <chrono>
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#include <list>
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using namespace std::chrono;
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using namespace std::chrono_literals;
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namespace
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{
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inline void AddRoute(BHMsgHead &head, const MQId id) { head.add_route()->set_mq_id(id); }
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struct SrcInfo {
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std::vector<BHAddress> route;
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std::string msg_id;
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};
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const int kMqLen = 700;
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} // namespace
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TopicNode::TopicNode(SharedMemory &shm) :
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shm_(shm), state_(eStateUnregistered)
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{
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Init();
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}
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TopicNode::~TopicNode()
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{
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LOG_DEBUG() << "~TopicNode()";
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Stop();
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}
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bool TopicNode::Init()
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{
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std::lock_guard<std::mutex> lk(mutex_);
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if (Valid()) {
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return true;
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}
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if (ssn_id_ == 0) {
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ssn_id_ = ShmMsgQueue::NewId();
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}
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LOG_DEBUG() << "Node Init, id " << ssn_id_;
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MsgI msg;
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msg.OffsetRef() = ssn_id_;
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if (ShmMsgQueue::TrySend(shm(), BHInitAddress(), msg)) {
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sockets_.resize(eSockEnd);
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for (int i = eSockStart; i < eSockEnd; ++i) {
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sockets_[i].reset(new ShmSocket(shm_, ssn_id_ + i, kMqLen));
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}
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// recv msgs to avoid memory leak.
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auto default_ignore_msg = [](ShmSocket &sock, MsgI &imsg, BHMsgHead &head) { return true; };
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SockNode().Start(default_ignore_msg);
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return true;
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}
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return false;
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}
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void TopicNode::Start(ServerAsyncCB const &server_cb, SubDataCB const &sub_cb, RequestResultCB &client_cb, int nworker)
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{
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if (!Init()) {
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SetLastError(eError, "BHome Node Not Inited.");
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return;
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}
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if (nworker < 1) {
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nworker = 1;
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} else if (nworker > 16) {
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nworker = 16;
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}
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SockNode().Start();
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ServerStart(server_cb, nworker);
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SubscribeStartWorker(sub_cb, nworker);
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ClientStartWorker(client_cb, nworker);
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}
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void TopicNode::Stop()
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{
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LOG_DEBUG() << "Node Stopping";
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for (auto &p : sockets_) { p->Stop(); }
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LOG_INFO() << "Node Stopped";
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}
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bool TopicNode::Register(ProcInfo &proc, MsgCommonReply &reply_body, const int timeout_ms)
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{
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if (!Init()) {
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SetLastError(eError, "BHome Node Not Inited.");
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return false;
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}
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info_ = proc;
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auto &sock = SockNode();
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MsgRegister body;
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body.mutable_proc()->Swap(&proc);
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auto AddId = [&](const MQId id) { body.add_addrs()->set_mq_id(id); };
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AddId(SockNode().id());
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AddId(SockServer().id());
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AddId(SockClient().id());
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AddId(SockSub().id());
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AddId(SockPub().id());
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auto head(InitMsgHead(GetType(body), body.proc().proc_id(), ssn()));
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AddRoute(head, sock.id());
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auto CheckResult = [this](MsgI &msg, BHMsgHead &head, MsgCommonReply &rbody) {
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bool ok = head.type() == kMsgTypeCommonReply &&
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msg.ParseBody(rbody) &&
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IsSuccess(rbody.errmsg().errcode());
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if (ok) {
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state(eStateOnline);
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} else {
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state_cas(eStateOnline, eStateOffline);
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}
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};
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if (timeout_ms == 0) {
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auto onResult = [this, CheckResult](ShmSocket &socket, MsgI &imsg, BHMsgHead &head) {
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MsgCommonReply body;
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CheckResult(imsg, head, body);
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};
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return sock.Send(BHTopicCenterAddress(), head, body, onResult);
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} else {
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MsgI reply;
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DEFER1(reply.Release(););
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BHMsgHead reply_head;
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bool r = sock.SendAndRecv(BHTopicCenterAddress(), head, body, reply, reply_head, timeout_ms);
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if (r) {
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CheckResult(reply, reply_head, reply_body);
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}
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return IsOnline();
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}
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}
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bool TopicNode::Unregister(ProcInfo &proc, MsgCommonReply &reply_body, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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info_.Clear();
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state_cas(eStateOnline, eStateOffline);
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auto &sock = SockNode();
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MsgUnregister body;
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body.mutable_proc()->Swap(&proc);
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auto head(InitMsgHead(GetType(body), body.proc().proc_id(), ssn()));
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AddRoute(head, sock.id());
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auto CheckResult = [this](MsgI &msg, BHMsgHead &head, MsgCommonReply &rbody) {
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bool r = head.type() == kMsgTypeCommonReply &&
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msg.ParseBody(rbody) &&
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IsSuccess(rbody.errmsg().errcode());
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return r;
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};
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if (timeout_ms == 0) {
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auto onResult = [this, CheckResult](ShmSocket &socket, MsgI &imsg, BHMsgHead &head) {
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MsgCommonReply body;
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CheckResult(imsg, head, body);
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};
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return sock.Send(BHTopicCenterAddress(), head, body, onResult);
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} else {
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MsgI reply;
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DEFER1(reply.Release(););
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BHMsgHead reply_head;
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bool r = sock.SendAndRecv(BHTopicCenterAddress(), head, body, reply, reply_head, timeout_ms);
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return r && CheckResult(reply, reply_head, reply_body);
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}
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}
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bool TopicNode::Heartbeat(ProcInfo &proc, MsgCommonReply &reply_body, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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auto &sock = SockNode();
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MsgHeartbeat body;
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body.mutable_proc()->Swap(&proc);
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auto head(InitMsgHead(GetType(body), body.proc().proc_id(), ssn()));
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AddRoute(head, sock.id());
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if (timeout_ms == 0) {
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return sock.Send(BHTopicCenterAddress(), head, body);
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} else {
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MsgI reply;
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DEFER1(reply.Release(););
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BHMsgHead reply_head;
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bool r = sock.SendAndRecv(BHTopicCenterAddress(), head, body, reply, reply_head, timeout_ms);
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r = r && reply_head.type() == kMsgTypeCommonReply && reply.ParseBody(reply_body);
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return (r && IsSuccess(reply_body.errmsg().errcode()));
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}
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}
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bool TopicNode::Heartbeat(const int timeout_ms)
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{
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ProcInfo proc;
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proc.set_proc_id(proc_id());
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MsgCommonReply reply_body;
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return Heartbeat(proc, reply_body, timeout_ms);
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}
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bool TopicNode::QueryTopicAddress(BHAddress &dest, MsgQueryTopic &query, MsgQueryTopicReply &reply_body, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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auto &sock = SockNode();
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BHMsgHead head(InitMsgHead(GetType(query), proc_id(), ssn()));
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AddRoute(head, sock.id());
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MsgI reply;
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DEFER1(reply.Release());
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BHMsgHead reply_head;
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return (sock.SendAndRecv(BHTopicCenterAddress(), head, query, reply, reply_head, timeout_ms) &&
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reply_head.type() == kMsgTypeQueryTopicReply &&
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reply.ParseBody(reply_body));
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}
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bool TopicNode::ServerRegisterRPC(MsgTopicList &topics, MsgCommonReply &reply_body, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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auto &sock = SockServer();
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MsgRegisterRPC body;
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body.mutable_topics()->Swap(&topics);
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auto head(InitMsgHead(GetType(body), proc_id(), ssn()));
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AddRoute(head, sock.id());
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if (timeout_ms == 0) {
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return sock.Send(BHTopicCenterAddress(), head, body);
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} else {
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MsgI reply;
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DEFER1(reply.Release(););
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BHMsgHead reply_head;
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bool r = sock.SendAndRecv(BHTopicCenterAddress(), head, body, reply, reply_head, timeout_ms);
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r = r && reply_head.type() == kMsgTypeCommonReply;
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r = r && reply.ParseBody(reply_body);
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return r;
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}
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}
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bool TopicNode::ServerStart(const ServerSyncCB &rcb, int nworker)
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{
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auto onRecv = [this, rcb](ShmSocket &sock, MsgI &imsg, BHMsgHead &head) {
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if (head.type() != kMsgTypeRequestTopic || head.route_size() == 0) { return; }
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MsgRequestTopic req;
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if (!imsg.ParseBody(req)) { return; }
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MsgRequestTopicReply reply_body;
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if (rcb(head.proc_id(), req, reply_body)) {
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BHMsgHead reply_head(InitMsgHead(GetType(reply_body), proc_id(), ssn(), head.msg_id()));
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for (int i = 0; i < head.route_size() - 1; ++i) {
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reply_head.add_route()->Swap(head.mutable_route(i));
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}
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auto remote = head.route().rbegin()->mq_id();
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sock.Send(remote, reply_head, reply_body);
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}
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};
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auto &sock = SockServer();
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return rcb && sock.Start(onRecv, nworker);
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}
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bool TopicNode::ServerStart(const ServerAsyncCB &acb, int nworker)
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{
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auto onRecv = [this, acb](ShmSocket &sock, MsgI &imsg, BHMsgHead &head) {
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if (head.type() != kMsgTypeRequestTopic || head.route_size() == 0) { return; }
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MsgRequestTopic req;
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if (!imsg.ParseBody(req)) { return; }
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SrcInfo *p = new SrcInfo;
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p->route.assign(head.route().begin(), head.route().end());
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p->msg_id = head.msg_id();
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acb(p, *head.mutable_proc_id(), req);
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};
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auto &sock = SockServer();
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return acb && sock.Start(onRecv, nworker);
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}
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bool TopicNode::ServerRecvRequest(void *&src_info, std::string &proc_id, MsgRequestTopic &request, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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auto &sock = SockServer();
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MsgI imsg;
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BHMsgHead head;
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if (sock.SyncRecv(imsg, head, timeout_ms) && head.type() == kMsgTypeRequestTopic) {
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if (imsg.ParseBody(request)) {
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head.mutable_proc_id()->swap(proc_id);
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SrcInfo *p = new SrcInfo;
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p->route.assign(head.route().begin(), head.route().end());
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p->msg_id = head.msg_id();
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src_info = p;
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return true;
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}
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}
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return false;
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}
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bool TopicNode::ServerSendReply(void *src_info, const MsgRequestTopicReply &body)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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auto &sock = SockServer();
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SrcInfo *p = static_cast<SrcInfo *>(src_info);
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DEFER1(delete p);
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if (!p || p->route.empty()) {
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return false;
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}
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BHMsgHead head(InitMsgHead(GetType(body), proc_id(), ssn(), p->msg_id));
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for (unsigned i = 0; i < p->route.size() - 1; ++i) {
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head.add_route()->Swap(&p->route[i]);
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}
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return sock.Send(p->route.back().mq_id(), head, body);
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}
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bool TopicNode::ClientStartWorker(RequestResultCB const &cb, const int nworker)
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{
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if (!cb) {
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return false;
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}
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auto onData = [this, cb](ShmSocket &socket, MsgI &imsg, BHMsgHead &head) {
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if (head.type() == kMsgTypeRequestTopicReply) {
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MsgRequestTopicReply reply;
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if (imsg.ParseBody(reply)) {
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cb(head, reply);
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}
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}
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};
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return SockClient().Start(onData, nworker);
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}
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bool TopicNode::ClientAsyncRequest(const BHAddress &remote_addr, const MsgRequestTopic &req, std::string &out_msg_id, const RequestResultCB &cb)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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const std::string &msg_id(NewMsgId());
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out_msg_id = msg_id;
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auto SendTo = [this, msg_id](const BHAddress &addr, const MsgRequestTopic &req, const RequestResultCB &cb) {
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auto &sock = SockClient();
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BHMsgHead head(InitMsgHead(GetType(req), proc_id(), ssn(), msg_id));
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AddRoute(head, sock.id());
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head.set_topic(req.topic());
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if (cb) {
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auto onRecv = [cb](ShmSocket &sock, MsgI &imsg, BHMsgHead &head) {
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if (head.type() == kMsgTypeRequestTopicReply) {
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MsgRequestTopicReply reply;
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if (imsg.ParseBody(reply)) {
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cb(head, reply);
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}
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}
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};
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return sock.Send(addr.mq_id(), head, req, onRecv);
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} else {
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return sock.Send(addr.mq_id(), head, req);
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}
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};
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try {
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BHAddress addr;
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return (ClientQueryRPCTopic(req.topic(), addr, 3000)) && SendTo(addr, req, cb);
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} catch (...) {
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SetLastError(eError, "internal error.");
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return false;
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}
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}
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bool TopicNode::ClientSyncRequest(const BHAddress &remote_addr, const MsgRequestTopic &request, std::string &out_proc_id, MsgRequestTopicReply &out_reply, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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try {
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auto &sock = SockClient();
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BHAddress addr;
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if (ClientQueryRPCTopic(request.topic(), addr, timeout_ms)) {
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LOG_TRACE() << "node: " << SockNode().id() << ", topic dest: " << addr.mq_id();
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BHMsgHead head(InitMsgHead(GetType(request), proc_id(), ssn()));
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AddRoute(head, sock.id());
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head.set_topic(request.topic());
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MsgI reply_msg;
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DEFER1(reply_msg.Release(););
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BHMsgHead reply_head;
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if (sock.SendAndRecv(addr.mq_id(), head, request, reply_msg, reply_head, timeout_ms) &&
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reply_head.type() == kMsgTypeRequestTopicReply &&
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reply_msg.ParseBody(out_reply)) {
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reply_head.mutable_proc_id()->swap(out_proc_id);
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return true;
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}
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}
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} catch (...) {
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SetLastError(eError, __func__ + std::string(" internal errer."));
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}
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return false;
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}
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int TopicNode::QueryRPCTopics(const Topic &topic, std::vector<NodeAddress> &addr, const int timeout_ms)
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{
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int n = 0;
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MsgQueryTopic query;
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query.set_topic(topic);
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MsgQueryTopicReply rep;
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BHAddress dest; // empty means local.
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if (QueryTopicAddress(dest, query, rep, timeout_ms)) {
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auto &ls = rep.node_address();
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n = ls.size();
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for (auto &na : ls) {
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addr.push_back(na);
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}
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}
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return n;
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}
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bool TopicNode::ClientQueryRPCTopic(const Topic &topic, BHAddress &addr, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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if (topic_query_cache_.Find(topic, addr)) {
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return true;
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}
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std::vector<NodeAddress> lst;
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if (QueryRPCTopics(topic, lst, timeout_ms)) {
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addr = lst.front().addr();
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if (addr.mq_id() != 0) {
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topic_query_cache_.Store(topic, addr);
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return true;
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}
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}
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SetLastError(eNotFound, "remote not found.");
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return false;
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}
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// publish
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bool TopicNode::Publish(const MsgPublish &pub, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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try {
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auto &sock = SockPub();
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BHMsgHead head(InitMsgHead(GetType(pub), proc_id(), ssn()));
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AddRoute(head, sock.id());
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if (timeout_ms == 0) {
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return sock.Send(BHTopicBusAddress(), head, pub);
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} else {
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MsgI reply;
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DEFER1(reply.Release(););
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BHMsgHead reply_head;
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MsgCommonReply reply_body;
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return sock.SendAndRecv(BHTopicBusAddress(), head, pub, reply, reply_head, timeout_ms) &&
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reply_head.type() == kMsgTypeCommonReply &&
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reply.ParseBody(reply_body) &&
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IsSuccess(reply_body.errmsg().errcode());
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}
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} catch (...) {
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}
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return false;
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}
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// subscribe
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bool TopicNode::Subscribe(MsgTopicList &topics, MsgCommonReply &reply_body, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
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}
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try {
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auto &sock = SockSub();
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MsgSubscribe sub;
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sub.mutable_topics()->Swap(&topics);
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BHMsgHead head(InitMsgHead(GetType(sub), proc_id(), ssn()));
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AddRoute(head, sock.id());
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if (timeout_ms == 0) {
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return sock.Send(BHTopicBusAddress(), head, sub);
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} else {
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MsgI reply;
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DEFER1(reply.Release(););
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BHMsgHead reply_head;
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return sock.SendAndRecv(BHTopicBusAddress(), head, sub, reply, reply_head, timeout_ms) &&
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reply_head.type() == kMsgTypeCommonReply &&
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reply.ParseBody(reply_body) &&
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IsSuccess(reply_body.errmsg().errcode());
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}
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// TODO wait for result?
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} catch (...) {
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return false;
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}
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}
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bool TopicNode::SubscribeStartWorker(const SubDataCB &tdcb, int nworker)
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{
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auto &sock = SockSub();
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auto AsyncRecvProc = [this, tdcb](ShmSocket &, MsgI &imsg, BHMsgHead &head) {
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if (head.type() == kMsgTypePublish) {
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MsgPublish pub;
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if (imsg.ParseBody(pub)) {
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tdcb(head.proc_id(), pub);
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}
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} else {
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// ignored, or dropped
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}
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};
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return tdcb && sock.Start(AsyncRecvProc, nworker);
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}
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bool TopicNode::RecvSub(std::string &proc_id, MsgPublish &pub, const int timeout_ms)
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{
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if (!IsOnline()) {
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SetLastError(eNotRegistered, "Not Registered.");
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return false;
|
}
|
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auto &sock = SockSub();
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MsgI msg;
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DEFER1(msg.Release(););
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BHMsgHead head;
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//TODO error msg.
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if (sock.SyncRecv(msg, head, timeout_ms) && head.type() == kMsgTypePublish) {
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if (msg.ParseBody(pub)) {
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head.mutable_proc_id()->swap(proc_id);
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return true;
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}
|
}
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return false;
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}
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