ShardManager::ShardManager( DBConfig * config , string ns , ShardKeyPattern pattern ) : _config( config ) , _ns( ns ) , _key( pattern ){
Shard temp(0);
ScopedDbConnection conn( temp.modelServer() );
auto_ptr<DBClientCursor> cursor = conn->query( temp.getNS() , BSON( "ns" << ns ) );
while ( cursor->more() ){
Shard * s = new Shard( this );
BSONObj d = cursor->next();
s->unserialize( d );
_shards.push_back( s );
s->_id = d["_id"].wrap().getOwned();
}
conn.done();
if ( _shards.size() == 0 ){
Shard * s = new Shard( this );
s->_ns = ns;
s->_min = _key.globalMin();
s->_max = _key.globalMax();
s->_server = config->getPrimary();
s->_markModified();
_shards.push_back( s );
log() << "no shards for:" << ns << " so creating first: " << s->toString() << endl;
}
_sequenceNumber = ++NextSequenceNumber;
}
