Shard Shard::pick( const Shard& current ) {
vector<Shard> all;
staticShardInfo.getAllShards( all );
if ( all.size() == 0 ) {
staticShardInfo.reload();
staticShardInfo.getAllShards( all );
if ( all.size() == 0 )
return EMPTY;
}
// if current shard was provided, pick a different shard only if it is a better choice
ShardStatus best = all[0].getStatus();
if ( current != EMPTY ) {
best = current.getStatus();
}
for ( size_t i=0; i<all.size(); i++ ) {
ShardStatus t = all[i].getStatus();
if ( t < best )
best = t;
}
LOG(1) << "best shard for new allocation is " << best << endl;
return best.shard();
}
