/*
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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, sizeof(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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} // namespace
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TopicNode::TopicNode(SharedMemory &shm) :
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shm_(shm), sock_node_(shm), sock_request_(shm), sock_reply_(shm), sock_sub_(shm), registered_(false)
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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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}
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TopicNode::~TopicNode()
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{
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Stop();
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SockNode().Stop();
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}
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void TopicNode::Start(ServerCB const &server_cb, SubDataCB const &sub_cb, RequestResultCB &client_cb, int nworker)
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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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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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SockSub().Stop();
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SockServer().Stop();
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SockClient().Stop();
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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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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, sizeof(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()));
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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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printf("async regisered %s\n", ok ? "ok" : "failed");
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registered_.store(ok);
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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(shm_););
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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 IsRegistered();
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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 (!IsRegistered()) { return false; }
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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()));
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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(shm_););
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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::ServerRegisterRPC(MsgTopicList &topics, MsgCommonReply &reply_body, const int timeout_ms)
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{
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if (!IsRegistered()) { return false; }
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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()));
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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(shm_););
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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 ServerCB &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(), 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.data(), 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::ServerRecvRequest(void *&src_info, std::string &proc_id, MsgRequestTopic &request, const int timeout_ms)
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{
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if (!IsRegistered()) { return false; }
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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 (!IsRegistered()) { return false; }
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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(), 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().data(), 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 SockRequest().Start(onData, nworker);
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}
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bool TopicNode::ClientAsyncRequest(const MsgRequestTopic &req, std::string &out_msg_id, const RequestResultCB &cb)
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{
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if (!IsRegistered()) {
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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(), 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().data(), head, req, onRecv);
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} else {
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return sock.Send(addr.mq_id().data(), head, req);
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}
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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 (topic_query_cache_.Find(req.topic(), addr)) {
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return SendTo(addr, req, cb);
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}
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MsgQueryTopic query;
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query.set_topic(req.topic());
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BHMsgHead head(InitMsgHead(GetType(query), proc_id()));
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AddRoute(head, sock.id());
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auto onQueryResult = [this, SendTo, req, cb](ShmSocket &sock, MsgI &imsg, BHMsgHead &head) {
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MsgQueryTopicReply rep;
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if (head.type() == kMsgTypeQueryTopicReply && imsg.ParseBody(rep)) {
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auto &addr = rep.address();
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if (!addr.mq_id().empty()) {
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topic_query_cache_.Update(req.topic(), addr);
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SendTo(addr, req, cb);
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}
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}
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};
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return sock.Send(&BHTopicCenterAddress(), head, query, onQueryResult);
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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 MsgRequestTopic &request, std::string &out_proc_id, MsgRequestTopicReply &out_reply, const int timeout_ms)
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{
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if (!IsRegistered()) { return false; }
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try {
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auto &sock = SockRequest();
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BHAddress addr;
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if (ClientQueryRPCTopic(request.topic(), addr, timeout_ms)) {
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BHMsgHead head(InitMsgHead(GetType(request), proc_id()));
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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(shm_););
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BHMsgHead reply_head;
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if (sock.SendAndRecv(addr.mq_id().data(), head, request, reply_msg, reply_head, timeout_ms) && reply_head.type() == kMsgTypeRequestTopicReply) {
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if (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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} else {
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printf("error parse reply.\n");
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}
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}
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} else {
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SetLastError(eNotFound, "remote not found.");
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}
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} catch (...) {
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printf("error recv data. line: %d\n", __LINE__);
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}
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return false;
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}
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bool TopicNode::ClientQueryRPCTopic(const Topic &topic, bhome::msg::BHAddress &addr, const int timeout_ms)
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{
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if (!IsRegistered()) { return false; }
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auto &sock = SockRequest();
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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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MsgQueryTopic query;
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query.set_topic(topic);
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BHMsgHead head(InitMsgHead(GetType(query), proc_id()));
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AddRoute(head, sock.id());
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MsgI reply;
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DEFER1(reply.Release(shm_));
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BHMsgHead reply_head;
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if (sock.SendAndRecv(&BHTopicCenterAddress(), head, query, reply, reply_head, timeout_ms)) {
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if (reply_head.type() == kMsgTypeQueryTopicReply) {
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MsgQueryTopicReply rep;
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if (reply.ParseBody(rep)) {
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addr = rep.address();
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if (addr.mq_id().empty()) {
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return false;
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} else {
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topic_query_cache_.Update(topic, addr);
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return true;
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}
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}
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}
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} else {
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}
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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 (!IsRegistered()) { return false; }
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try {
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auto &sock = SockPub();
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BHMsgHead head(InitMsgHead(GetType(pub), proc_id()));
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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(shm()););
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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 (!IsRegistered()) { return false; }
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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()));
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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(shm()););
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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 (!IsRegistered()) { return false; }
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auto &sock = SockSub();
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MsgI msg;
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DEFER1(msg.Release(shm()););
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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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}
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return false;
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}
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