int ConfigDiffTracker<ValType,ShardType>::
calculateConfigDiff( string config,
const set<ChunkVersion>& extraMinorVersions )
{
verifyAttached();
// Get the diff query required
Query diffQuery = configDiffQuery( extraMinorVersions );
ScopedDbConnection conn(config);
try {
// Open a cursor for the diff chunks
auto_ptr<DBClientCursor> cursor = conn->query(
ChunkType::ConfigNS, diffQuery, 0, 0, 0, 0, ( DEBUG_BUILD ? 2 : 1000000 ) );
verify( cursor.get() );
int diff = calculateConfigDiff( *cursor.get() );
conn.done();
return diff;
}
catch( DBException& e ) {
// Should only happen on connection errors
e.addContext( str::stream() << "could not calculate config difference for ns " << _ns << " on " << config );
throw;
}
}
int ConfigDiffTracker<ValType, ShardType>::calculateConfigDiff(CatalogManager* catalogManager) {
_assertAttached();
// Get the diff query required
Query diffQuery = configDiffQuery();
try {
std::vector<ChunkType> chunks;
uassertStatusOK(catalogManager->getChunks(
diffQuery.getFilter(), diffQuery.getSort(), boost::none, &chunks));
return calculateConfigDiff(chunks);
} catch (DBException& e) {
// Should only happen on connection errors
e.addContext(str::stream() << "could not calculate config difference for ns " << _ns);
throw;
}
}
