/**
* Update info on a node.
*
* This may have the side-effect of changing our state to CHANGED.
*
* \param node Node to update the info on
* \param[in] ping Ping received from #node
*/
static void
update_node_info(sup_node_t *node, const sup_ping_t *ping)
{
bool inca_changed, view_changed;
bool rebooted_too_fast;
inca_changed = (ping->incarnation != node->incarnation);
view_changed = !sup_view_equals(&ping->view, &node->view);
/* If the node's incarnation has changed but the node was not seen down
* in-between, it means the node has rebooted faster than ping_timeout
*/
rebooted_too_fast = self_sees(node) && inca_changed;
node->incarnation = ping->incarnation;
sup_view_copy(&node->view, &ping->view);
if (rebooted_too_fast)
{
__trace("node %u rebooted too fast, marking it dead", node->id);
mark_dead(node);
}
else
mark_alive(node);
if (inca_changed || view_changed)
{
__trace("node %u's view changed", node->id);
other_view_changed = true;
}
}
/**
* Send a ping to all instances of Csupd using examsg.
*
* \param[in] cluster Cluster
* \param[in] view View to send
*/
void
sup_send_ping(const sup_cluster_t *cluster, const sup_view_t *view)
{
sup_ping_msg_t ping_msg;
int err;
ping_msg.any.type = EXAMSG_SUP_PING;
ping_msg.ping.sender = cluster->self->id;
ping_msg.ping.incarnation = cluster->self->incarnation;
sup_view_copy(&ping_msg.ping.view, view);
EXA_ASSERT(sup_check_ping(&ping_msg.ping, 'S'));
err = examsgSendNoBlock(sup_mh, EXAMSG_CMSGD_ID, EXAMSG_LOCALHOST,
&ping_msg, sizeof(ping_msg));
if (err != sizeof(ping_msg))
__debug("cannot send ping : %s (%d)", exa_error_msg(err), err);
}
