| | |
| | | #include "common.h" |
| | | using namespace std; |
| | | |
| | | #include <nng/protocol/reqrep0/rep.h> |
| | | #include <nng/supplemental/util/platform.h> |
| | | |
| | | #include "nng/compat/nanomsg/reqrep.h" |
| | | #include "nng/compat/nanomsg/pubsub.h" |
| | | #include "nng/compat/nanomsg/survey.h" |
| | |
| | | return 0; |
| | | } |
| | | |
| | | int request2(const std::string &ipc, const void* r, const int r_len, |
| | | void** reply, int* reply_len, const int to_ms, void* arg/*=NULL*/) |
| | | { |
| | | const auto suc = simple_request(ipc, r, r_len, reply, reply_len, to_ms); |
| | | if (suc){ |
| | | const size_t sl = rr_unblocking_msg_.size(); |
| | | const size_t rl = *reply_len; |
| | | if (sl != rl) return true; |
| | | |
| | | const auto& s = rr_unblocking_msg_; |
| | | auto r = (const char*)(*reply); |
| | | if (s.compare(0, sl, r, rl) == 0){ |
| | | free(*reply); |
| | | *reply = NULL; |
| | | *reply_len = 0; |
| | | return false; |
| | | } |
| | | } |
| | | return suc; |
| | | } |
| | | |
| | | static void server_cb(void *arg) |
| | | { |
| | | if (!arg) return; |
| | | |
| | | struct work *work = (struct work*)arg; |
| | | nng_msg * msg; |
| | | int rv; |
| | | // uint32_t when{0}; |
| | | |
| | | switch (work->state) { |
| | | case INIT: |
| | | work->state = RECV; |
| | | nng_ctx_recv(work->ctx, work->aio); |
| | | break; |
| | | case RECV: |
| | | if ((rv = nng_aio_result(work->aio)) != 0) { |
| | | break; |
| | | } |
| | | msg = nng_aio_get_msg(work->aio); |
| | | |
| | | work->msg = msg; |
| | | work->state = WAIT; |
| | | if (work->cb_recv) work->cb_recv(work); |
| | | // nng_sleep_aio(when, work->aio); |
| | | break; |
| | | case WAIT: |
| | | // We could add more data to the message here. |
| | | nng_aio_set_msg(work->aio, work->msg); |
| | | work->msg = NULL; |
| | | work->state = SEND; |
| | | nng_ctx_send(work->ctx, work->aio); |
| | | break; |
| | | case SEND: |
| | | if ((rv = nng_aio_result(work->aio)) != 0) { |
| | | nng_msg_free(work->msg); |
| | | } |
| | | work->state = RECV; |
| | | nng_ctx_recv(work->ctx, work->aio); |
| | | break; |
| | | default: |
| | | break; |
| | | } |
| | | } |
| | | |
| | | static void cb_recv_for_aio(work* w){ |
| | | nng_msg *om = w->msg; |
| | | if (!om) return; |
| | | |
| | | _rr* rep = (_rr*)w->user_data; |
| | | |
| | | string msg{(const char*)nng_msg_body(om), nng_msg_len(om)}; |
| | | nng_msg_free(om); |
| | | |
| | | auto t = (*rep)(); |
| | | lock_guard<mutex> l{rep->mtx_msg_}; |
| | | rep->works_.emplace(get<0>(t), w); |
| | | get<1>(t).emplace(get<0>(t), move(msg)); |
| | | get<0>(t)++; |
| | | rep->cv_msg_.notify_all(); |
| | | } |
| | | |
| | | static struct work *alloc_work(nng_socket sock, _rr* rep) |
| | | { |
| | | struct work *w; |
| | | int rv; |
| | | |
| | | if ((w = (struct work*)nng_alloc(sizeof(*w))) == NULL) { |
| | | return NULL;; |
| | | } |
| | | w->cb_recv = cb_recv_for_aio; |
| | | w->user_data = rep; |
| | | |
| | | if ((rv = nng_aio_alloc(&w->aio, server_cb, w)) != 0) { |
| | | return NULL; |
| | | } |
| | | if ((rv = nng_ctx_open(&w->ctx, sock)) != 0) { |
| | | return NULL; |
| | | } |
| | | w->state = INIT; |
| | | return (w); |
| | | } |
| | | |
| | | static int create_server(nng_socket* sock, const string& url, const int count, _rr* rep){ |
| | | TAG; |
| | | if (sock->id > 0) return 0; |
| | | |
| | | int rv = nng_rep0_open(sock); |
| | | if (rv < 0){ |
| | | PRNTVITAG("create_server nng_rep0_open faild"); |
| | | PRNTVITAG(url); |
| | | return rv; |
| | | } |
| | | |
| | | work** works = (work**)malloc(sizeof(void*) * count); |
| | | for (int i = 0; i < count; i++) { |
| | | works[i] = alloc_work(*sock, rep); |
| | | } |
| | | |
| | | remove_exist(url); |
| | | rv = nng_listen(*sock, url.c_str(), NULL, 0); |
| | | if (rv < 0){ |
| | | free(works); |
| | | PRNTVITAG("create_server nng_listen failed"); |
| | | PRNTVITAG(url); |
| | | return rv; |
| | | } |
| | | |
| | | for (int i = 0; i < count; i++) { |
| | | server_cb(works[i]); // this starts them going (INIT state) |
| | | } |
| | | |
| | | free(works); |
| | | return 0; |
| | | } |
| | | |
| | | static void aio_unblock(work* w, const void* msg, const int msg_len){ |
| | | nng_msg_alloc(&w->msg, 0); |
| | | nng_msg_append(w->msg, msg, msg_len); |
| | | |
| | | nng_sleep_aio(0, w->aio); |
| | | } |
| | | |
| | | int start_reply(const std::string& url, const int port, void* arg/*=NULL*/){ |
| | | _rr* rep = (_rr*)arg; |
| | | if (!rep) rep = singleton<_rr>(); |
| | | |
| | | string ipc = "ipc:///tmp/" + url; |
| | | if (url.find("ipc://") == 0){ |
| | | ipc = url; |
| | | } |
| | | rep->url_ = ipc; |
| | | if(create_server(&get<0>(rep->socks_), ipc, 62, rep) != 0) return -1; |
| | | |
| | | if (port > 0){ |
| | | get<1>(get<1>(rep->socks_)) = port; |
| | | ipc = "tcp://0.0.0.0:" + to_string(port); |
| | | if(create_server(&get<0>(get<1>(rep->socks_)), ipc, 62, rep) != 0) return -1; |
| | | }else { |
| | | get<0>(get<1>(rep->socks_)).id = numeric_limits<int32_t>::max(); |
| | | } |
| | | |
| | | if (!rep->t_unblock_){ |
| | | rep->t_unblock_.reset(new thread(get_thread([](const auto rep){ |
| | | constexpr int idle = 10; |
| | | const auto data = rr_unblocking_msg_.data(); |
| | | const auto data_size = rr_unblocking_msg_.size(); |
| | | auto f = [rep]{ |
| | | vector<struct work*> tmp{}; |
| | | lock_guard<mutex> l{rep->mtx_msg_}; |
| | | for(auto iter = rep->works_.begin(); iter != rep->works_.end();){ |
| | | if ((iter->second+=idle) > timeout_req_rep){ |
| | | tmp.push_back(iter->second.w_); |
| | | iter = rep->works_.erase(iter); |
| | | }else { |
| | | ++iter; |
| | | } |
| | | } |
| | | return tmp; |
| | | }; |
| | | while (!rep->t_quit_.load()) { |
| | | this_thread::sleep_for(chrono::milliseconds{10}); |
| | | vector<struct work*> tmp = f(); |
| | | for(auto && w : tmp){ |
| | | aio_unblock(w, data, data_size); |
| | | } |
| | | } |
| | | }, rep))); |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int read_request(void** src, std::string* msg, const int to_ms, void* arg/*=NULL*/){ |
| | | _rr* rep = (_rr*)arg; |
| | | if (!rep) rep = singleton<_rr>(); |
| | | |
| | | if (get<0>(rep->socks_).id == 0 || get<0>(get<1>(rep->socks_)).id == 0) |
| | | if (start_reply(rep->url_, get<1>(get<1>(rep->socks_))) != 0) |
| | | return -1; |
| | | |
| | | int tm = to_ms > 0 ? to_ms : 30; |
| | | |
| | | uint64_t key{}; |
| | | { |
| | | unique_lock<mutex> l(rep->mtx_msg_); |
| | | auto status = rep->cv_msg_.wait_for(l, chrono::milliseconds{tm}, [rep]{ |
| | | return !rep->msg_.empty(); |
| | | }); |
| | | if (!status){ |
| | | PRNTVITAG("subscribe_read timeout"); |
| | | return -1; |
| | | } |
| | | auto iter = rep->msg_.begin(); |
| | | key = iter->first; |
| | | *msg = move(iter->second); |
| | | rep->msg_.erase(iter); |
| | | } |
| | | |
| | | *src = malloc(sizeof(uint64_t)); |
| | | *(uint64_t*)(*src) = key; |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int send_reply(const void* src, const void* msg, const int msg_len, void* arg/*=NULL*/){ |
| | | _rr* rep = (_rr*)arg; |
| | | if (!rep) rep = singleton<_rr>(); |
| | | |
| | | struct work* w{}; |
| | | { |
| | | auto key = *(static_cast<uint64_t*>(const_cast<void*>(src))); |
| | | |
| | | lock_guard<mutex> l{rep->mtx_msg_}; |
| | | auto iter = rep->works_.find(key); |
| | | if (iter == rep->works_.end()) return -1; |
| | | w = iter->second; |
| | | rep->works_.erase(iter); |
| | | } |
| | | |
| | | aio_unblock(w, msg, msg_len); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | } |