void sender_dispatch()

in c/tools/reactor-send.c [165:248]
77 lines of code
13 McCabe index (conditional complexity)

void sender_dispatch(pn_handler_t *h, pn_event_t *event, pn_event_type_t type)
{
  sender_context_t *sc = sender_context(h);

  switch (type) {
  case PN_CONNECTION_INIT:
    {
      pn_connection_t *conn = pn_event_connection(event);
      pn_connection_set_container(conn, sc->container_id);
      pn_connection_set_hostname(conn, sc->hostname);
      pn_connection_open(conn);
      pn_session_t *ssn = pn_session(conn);
      pn_session_open(ssn);
      pn_link_t *snd = pn_sender(ssn, "sender");
      const char *path = pn_url_get_path(sc->send_url);
      if (path && strlen(path)) {
        pn_terminus_set_address(pn_link_target(snd), path);
        pn_terminus_set_address(pn_link_source(snd), path);
      }
      pn_link_open(snd);
    }
    break;
  case PN_LINK_FLOW:
    {
      pn_link_t *snd = pn_event_link(event);
      while (pn_link_credit(snd) > 0 && sc->sent < sc->opts->msg_count) {
        if (sc->sent == 0)
          statistics_start(sc->stats);

        char tag[8];
        void *ptr = &tag;
        *((uint64_t *) ptr) = sc->sent;
        pn_delivery_t *dlv = pn_delivery(snd, pn_dtag(tag, 8));

        // setup the message to send
        pn_message_t *msg = get_message(sc, true);;
        pn_message_set_address(msg, sc->opts->targets.addresses[0]);
        sc->id.u.as_ulong = sc->sent;
        pn_message_set_correlation_id(msg, sc->id);
        pn_message_set_creation_time(msg, msgr_now());

        size_t size = sc->encoded_data_size;
        int err = pn_message_encode(msg, sc->encoded_data, &size);
        check(err == 0, "message encoding error");
        pn_link_send(snd, sc->encoded_data, size);
        pn_delivery_settle(dlv);
        sc->sent++;
        return_message(sc, msg);
      }
      if (sc->sent == sc->opts->msg_count && !sc->opts->get_replies) {
        pn_link_close(snd);
        pn_connection_t *conn = pn_event_connection(event);
        pn_connection_close(conn);
      }
    }
    break;
  case PN_LINK_INIT:
    {
      pn_link_t *link = pn_event_link(event);
      if (pn_link_is_receiver(link)) {
        // Response messages link.  Could manage credit and deliveries in this handler but
        // a dedicated handler also works.
        pn_handler_t *replyto = replyto_handler(sc);
        pn_flowcontroller_t *fc = pn_flowcontroller(1024);
        pn_handler_add(replyto, fc);
        pn_decref(fc);
        pn_handshaker_t *handshaker = pn_handshaker();
        pn_handler_add(replyto, handshaker);
        pn_decref(handshaker);
        pn_record_t *record = pn_link_attachments(link);
        pn_record_set_handler(record, replyto);
        pn_decref(replyto);
      }
    }
    break;
  case PN_CONNECTION_LOCAL_CLOSE:
    {
      statistics_report(sc->stats, sc->sent, sc->received);
    }
    break;
  default:
    break;
  }
}