Exemple #1
0
        /// <summary>
        /// Validate database size - check how many records are stored
        /// in database and how much records need space.
        /// If space or number of records are invalid
        /// database will remove old reports
        /// </summary>
        private bool ValidateDatabaseSize()
        {
            //check how many records are stored in database
            //remove in case when we want to store one more than expected number
            //If record count == 0 then we ignore this condition
            if (BacktraceDatabaseContext.Count() + 1 > DatabaseSettings.MaxRecordCount && DatabaseSettings.MaxRecordCount != 0)
            {
                if (!BacktraceDatabaseContext.RemoveLastRecord())
                {
                    return(false);
                }
            }

            //check database size. If database size == 0 then we ignore this condition
            //remove all records till database use enough space
            if (DatabaseSettings.MaxDatabaseSize != 0 && BacktraceDatabaseContext.GetSize() > DatabaseSettings.MaxDatabaseSize)
            {
                //if your database is entry or every record is locked
                //deletePolicyRetry avoid infinity loop
                int deletePolicyRetry = 5;
                while (BacktraceDatabaseContext.GetSize() > DatabaseSettings.MaxDatabaseSize)
                {
                    BacktraceDatabaseContext.RemoveLastRecord();
                    deletePolicyRetry--;
                    if (deletePolicyRetry != 0)
                    {
                        break;
                    }
                }
                return(deletePolicyRetry != 0);
            }
            return(true);
        }