int
Ndb_cluster_connection::wait_until_ready(int timeout,
int timeout_after_first_alive)
{
DBUG_ENTER("Ndb_cluster_connection::wait_until_ready");
TransporterFacade *tp = TransporterFacade::instance();
if (tp == 0)
{
DBUG_RETURN(-1);
}
if (tp->ownId() == 0)
{
DBUG_RETURN(-1);
}
int secondsCounter = 0;
int milliCounter = 0;
int noChecksSinceFirstAliveFound = 0;
do {
unsigned int foundAliveNode = 0;
tp->lock_mutex();
for(unsigned i= 0; i < no_db_nodes(); i++)
{
//************************************************
// If any node is answering, ndb is answering
//************************************************
if (tp->get_node_alive(m_impl.m_all_nodes[i].id) != 0) {
foundAliveNode++;
}
}
tp->unlock_mutex();
if (foundAliveNode == no_db_nodes())
{
DBUG_RETURN(0);
}
else if (foundAliveNode > 0)
{
noChecksSinceFirstAliveFound++;
// 100 ms delay -> 10*
if (noChecksSinceFirstAliveFound > 10*timeout_after_first_alive)
DBUG_RETURN(1);
}
else if (secondsCounter >= timeout)
{ // no alive nodes and timed out
DBUG_RETURN(-1);
}
NdbSleep_MilliSleep(100);
milliCounter += 100;
if (milliCounter >= 1000) {
secondsCounter++;
milliCounter = 0;
}//if
} while (1);
}
int Ndb_cluster_connection::get_no_ready()
{
TransporterFacade *tp = m_impl.m_transporter_facade;
if (tp == 0 || tp->ownId() == 0)
return -1;
unsigned int foundAliveNode = 0;
tp->lock_mutex();
for(unsigned i= 0; i < no_db_nodes(); i++)
{
//************************************************
// If any node is answering, ndb is answering
//************************************************
if (tp->get_node_alive(m_impl.m_all_nodes[i].id) != 0) {
foundAliveNode++;
}
}
tp->unlock_mutex();
return foundAliveNode;
}
Uint32
Ndb_cluster_connection_impl::get_next_alive_node(Ndb_cluster_connection_node_iter &iter)
{
Uint32 id;
TransporterFacade *tp = m_impl.m_transporter_facade;
if (tp == 0 || tp->ownId() == 0)
return 0;
while ((id = get_next_node(iter)))
{
tp->lock_mutex();
if (tp->get_node_alive(id) != 0)
{
tp->unlock_mutex();
return id;
}
tp->unlock_mutex();
}
return 0;
}
