private void UpdateMetrics(object?state)
{
try
{
// It seems that currently there is no other option with .NET api to extract the compaction statistics than through the dumped string
var compactionStatsString = _db.GetProperty("rocksdb.stats");
ProcessCompactionStats(compactionStatsString);
if (_dbConfig.EnableDbStatistics)
{
var dbStatsString = _dbOptions.GetStatisticsString();
// Currently we don't extract any DB statistics but we can do it here
}
}
catch (Exception exc)
{
_logger.Error($"Error when updating metrics for {_dbName} database.", exc);
// Maybe we would like to stop the _timer here to avoid logging the same error all over again?
}
}
public ulong EstimateNumberOfKeys()
{
return(ulong.Parse(_rocksDb.GetProperty("rocksdb.estimate-num-keys")));
}
/// <inheritdoc />
/// <remarks>
/// See https://github.com/facebook/rocksdb/blob/master/include/rocksdb/db.h#L547 for a list of all the
/// valid properties.
/// </remarks>
public string GetProperty(string propertyName, string columnFamilyName = null)
{
return(m_store.GetProperty(propertyName, GetColumnFamilyInfo(columnFamilyName).Handle));
}