inline
NdbOut &
operator<<(NdbOut& ndbout, const NodeInfo & info){
ndbout << "[NodeInfo: ";
switch(info.m_type){
case NodeInfo::DB:
ndbout << "DB";
break;
case NodeInfo::API:
ndbout << "API";
break;
case NodeInfo::MGM:
ndbout << "MGM";
break;
case NodeInfo::INVALID:
ndbout << "INVALID";
break;
default:
ndbout << "<Unknown: " << info.m_type << ">";
break;
}
ndbout << " ndb version: " << NdbVersion(info.m_version)
<< " mysql version: " << NdbVersion(info.m_mysql_version)
<< " connect count: " << info.m_connectCount
<< "]";
return ndbout;
}
/**
* recalcMinDbVersion
*
* This method is called whenever the 'minimum DB node
* version' data for the connected DB nodes changes
* It calculates the minimum version of all the connected
* DB nodes.
* This information is cached by Ndb object instances.
* This information is useful when implementing API compatibility
* with older DB nodes
*/
void
ClusterMgr::recalcMinDbVersion()
{
Uint32 newMinDbVersion = ~ (Uint32) 0;
for (Uint32 i = 0; i < MAX_NODES; i++)
{
trp_node& node = theNodes[i];
if (node.is_connected() &&
node.is_confirmed() &&
node.m_info.getType() == NodeInfo::DB)
{
/* Include this node in the set of nodes used to
* compute the lowest current DB node version
*/
assert(node.m_info.m_version);
if (node.minDbVersion < newMinDbVersion)
{
newMinDbVersion = node.minDbVersion;
}
}
}
/* Now update global min Db version if we have one.
* Otherwise set it to 0
*/
newMinDbVersion = (newMinDbVersion == ~ (Uint32) 0) ?
0 :
newMinDbVersion;
//#ifdef DEBUG_MINVER
#ifdef DEBUG_MINVER
if (newMinDbVersion != minDbVersion)
{
ndbout << "Previous min Db node version was "
<< NdbVersion(minDbVersion)
<< " new min is "
<< NdbVersion(newMinDbVersion)
<< endl;
}
else
{
ndbout << "MinDbVersion recalculated, but is same : "
<< NdbVersion(minDbVersion)
<< endl;
}
#endif
minDbVersion = newMinDbVersion;
}