private static async Task FillRoutingInfo(PreparedStatement ps, ICluster cluster)
{
var column = ps.Metadata.Columns.FirstOrDefault();
if (column?.Keyspace == null)
{
// The prepared statement does not contain parameters
return;
}
if (ps.Metadata.PartitionKeys != null)
{
// The routing indexes where parsed in the prepared response
if (ps.Metadata.PartitionKeys.Length == 0)
{
// zero-length partition keys means that none of the parameters are partition keys
// the partition key is hard-coded.
return;
}
ps.RoutingIndexes = ps.Metadata.PartitionKeys;
return;
}
try
{
const string msgRoutingNotSet = "Routing information could not be set for query \"{0}\"";
var table = await cluster.Metadata.GetTableAsync(column.Keyspace, column.Table).ConfigureAwait(false);
if (table == null)
{
Logger.Info(msgRoutingNotSet, ps.Cql);
return;
}
var routingSet = ps.SetPartitionKeys(table.PartitionKeys);
if (!routingSet)
{
Logger.Info(msgRoutingNotSet, ps.Cql);
}
}
catch (Exception ex)
{
Logger.Error("There was an error while trying to retrieve table metadata for {0}.{1}. {2}",
column.Keyspace, column.Table, ex.InnerException);
}
}
