doompanning/src/doompanning.cc

#include <cstdlib>
#include <nng/nng.h>
#include <sys/types.h>
#include <unistd.h>
#include "dp_common.h"
#include "log.h"

static const size_t NumDooms = 3;

int doom_controller_loop(nng_socket pubSock, nng_socket subSock)
{

    return 0;
}

int main(int argc, char *argv[])
{
    (void) argc;
    (void) argv;

    log_info("doompanning ctrl starting");

    dp_nng_init_limits(1, 1, 1);

    auto pubSock = make_ctrl_pub(CtrlUrl);
    auto subSock = make_ctrl_sub(DoomUrl);

    int ret = doom_controller_loop(pubSock, subSock);

    nng_close(pubSock);
    nng_close(subSock);

    return ret;
}

// doomctrl test code
    #if 0
    size_t readyCount = 0;

    log_debug("ctrl waiting for hello from dooms");
    while (readyCount < numDooms)
    {
        char *buf = nullptr;
        size_t sz = 0;

        if (auto res = nng_recv(subSock, &buf, &sz, NNG_FLAG_ALLOC))
            dp_nng_fatal("run_ctrl/sub/go", res);

        log_debug("ctrl received %zu bytes from a doom", sz);
        nng_free(buf, sz);
        ++readyCount;
    }

    log_debug("ctrl is unleashing dooms");

    if (auto res = nng_send(pubSock, (void *)&readyCount, sizeof(readyCount), 0))
        dp_nng_fatal("run_ctrl/pub/unleash", res);

    #endif

// doomsim test code
    #if 0
    while (true) // FIXME: ctrl code does not work this way
    {
        log_debug("doom%zu sending hello", id);
        if (auto res = nng_send(pubSock, (void *)&id, sizeof(id), 0))
            dp_nng_fatal("run_doom/pub/hello", res);

        {
            char *buf = nullptr;
            size_t sz = 0;

            log_debug("doom%zu waiting for unleash", id);
            auto res = nng_recv(subSock, &buf, &sz, NNG_FLAG_ALLOC | NNG_FLAG_NONBLOCK);

            if (res == NNG_EAGAIN)
            {
                usleep(10 * 1000);
                continue;
            }
            else if (res)
                dp_nng_fatal("run_doom/sub/go", res);

            log_debug("doom%zu unleashed by %zu bytes!", id, sz);
            nng_free(buf, sz);
            break;
        }
    }
    #endif