/*
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* =====================================================================================
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*
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* Filename: socket.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03月30日 15时48分58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 "socket.h"
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#include <chrono>
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#include "msg.h"
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#include "defs.h"
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#include "bh_util.h"
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using namespace bhome_msg;
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using namespace bhome_shm;
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using namespace std::chrono_literals;
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namespace {
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int GetSocketDefaultLen(ShmSocket::Type type)
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{
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switch (type) {
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case ShmSocket::eSockRequest : return 12;
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case ShmSocket::eSockReply : return 64;
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case ShmSocket::eSockPublish : return 0;
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case ShmSocket::eSockSubscribe : return 64;
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default: return 0;
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}
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}
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}
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ShmSocket::ShmSocket(Type type, bhome_shm::SharedMemory &shm)
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: shm_(shm),
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type_(type),
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run_(false)
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{
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int len = GetSocketDefaultLen(type);
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if (len != 0) {
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mq_.reset(new Queue(shm_, len));
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auto RecvProc = [this](){
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while (run_) {
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try {
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std::unique_lock<std::mutex> lk(mutex_);
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if (cv_recv_cb_.wait_for(lk, 100ms, [this](){ return HasRecvCB(); })) {
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BHMsg msg;
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if (mq_->Recv(msg, 100)) {
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this->onRecv_(msg);
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}
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}
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} catch (...) {}
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}
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};
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run_.store(true);
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workers_.emplace_back(RecvProc);
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}
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}
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ShmSocket::ShmSocket(Type type)
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: ShmSocket(type, BHomeShm())
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{
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}
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ShmSocket::~ShmSocket()
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{
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Stop();
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}
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bool ShmSocket::Publish(const std::string &topic, const void *data, const size_t size, const int timeout_ms)
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{
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if (type_ != eSockPublish) {
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return false;
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}
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assert(!mq_);
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try {
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MsgI imsg;
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if (!imsg.MakeRC(shm_, MakePub(topic, data, size))) {
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return false;
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}
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DEFER1(imsg.Release(shm_));
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return Queue::Send(shm_, kBHBusQueueId, imsg, timeout_ms);
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} catch (...) {
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return false;
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}
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}
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bool ShmSocket::Subscribe(const std::vector<std::string> &topics, const int timeout_ms)
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{
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if (type_ != eSockSubscribe) {
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return false;
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}
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assert(mq_);
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try {
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return mq_->Send(kBHBusQueueId, MakeSub(mq_->Id(), topics), timeout_ms);
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} catch (...) {
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return false;
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}
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}
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bool ShmSocket::SetRecvCallback(const RecvCB &onRecv)
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{
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std::lock_guard<std::mutex> lock(mutex_);
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onRecv_ = onRecv;
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cv_recv_cb_.notify_one();
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return true;
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}
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bool ShmSocket::HasRecvCB()
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{
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return static_cast<bool>(onRecv_);
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}
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void ShmSocket::Stop()
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{
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run_ = false;
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for (auto &t : workers_) {
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if (t.joinable()) {
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t.join();
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}
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}
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}
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