flux_msg_t *module_recvmsg (module_t *p)
{
flux_msg_t *msg = NULL;
int type;
assert (p->magic == MODULE_MAGIC);
if (!(msg = flux_msg_recvzsock (p->sock)))
goto error;
if (flux_msg_get_type (msg, &type) == 0 && type == FLUX_MSGTYPE_RESPONSE) {
if (flux_msg_pop_route (msg, NULL) < 0) /* simulate DEALER socket */
goto error;
}
return msg;
error:
flux_msg_destroy (msg);
return NULL;
}
static flux_msg_t *op_recv (void *impl, int flags)
{
ctx_t *ctx = impl;
assert (ctx->magic == MODHANDLE_MAGIC);
zmq_pollitem_t zp = {
.events = ZMQ_POLLIN, .socket = ctx->sock, .revents = 0, .fd = -1,
};
flux_msg_t *msg = NULL;
if (connect_socket (ctx) < 0)
goto done;
if ((flags & FLUX_O_NONBLOCK)) {
int n;
if ((n = zmq_poll (&zp, 1, 0L)) <= 0) {
if (n == 0)
errno = EWOULDBLOCK;
goto done;
}
}
msg = flux_msg_recvzsock (ctx->sock);
done:
return msg;
}
static int op_event_subscribe (void *impl, const char *topic)
{
ctx_t *ctx = impl;
assert (ctx->magic == MODHANDLE_MAGIC);
json_object *in = Jnew ();
flux_rpc_t *rpc = NULL;
int rc = -1;
if (connect_socket (ctx) < 0)
goto done;
Jadd_str (in, "topic", topic);
if (!(rpc = flux_rpc (ctx->h, "cmb.sub", Jtostr (in), FLUX_NODEID_ANY, 0))
|| flux_rpc_get (rpc, NULL) < 0)
goto done;
rc = 0;
done:
Jput (in);
flux_rpc_destroy (rpc);
return rc;
}
