Exemple #1
0
        /// <summary>
        /// Loads the properties from the connected server into a hashtable
        /// </summary>
        /// <param name="connection"></param>
        /// <returns></returns>
        private Dictionary <string, string> LoadServerProperties(MyCatConnection connection)
        {
            // load server properties
            Dictionary <string, string> hash = new Dictionary <string, string>();
            MyCatCommand cmd = new MyCatCommand("SHOW VARIABLES", connection);

            try
            {
                using (MyCatDataReader reader = cmd.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        string key   = reader.GetString(0);
                        string value = reader.GetString(1);
                        hash[key] = value;
                    }
                }
                // Get time zone offset as numerical value
                timeZoneOffset = TimeZoneInfo.Local.BaseUtcOffset.Hours;
                return(hash);
            }
            catch (Exception ex)
            {
                MyCatTrace.LogError(ThreadID, ex.Message);
                throw;
            }
        }
        public override void CloseQuery(MyCatConnection connection, int statementId)
        {
            base.CloseQuery(connection, statementId);

            MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.QueryClosed,
                                  Resources.TraceQueryDone, driverId);
        }
        public ProcedureCacheEntry GetProcedure(MyCatConnection conn, string spName, string cacheKey)
        {
            ProcedureCacheEntry proc = null;

            if (cacheKey != null)
            {
                int hash = cacheKey.GetHashCode();

                lock (procHash)
                {
                    procHash.TryGetValue(hash, out proc);
                }
            }
            if (proc == null)
            {
                proc = AddNew(conn, spName);
                conn.PerfMonitor.AddHardProcedureQuery();
                if (conn.Settings.Logging)
                {
                    MyCatTrace.LogInformation(conn.ServerThread,
                                              String.Format(Resources.HardProcQuery, spName));
                }
            }
            else
            {
                conn.PerfMonitor.AddSoftProcedureQuery();
                if (conn.Settings.Logging)
                {
                    MyCatTrace.LogInformation(conn.ServerThread,
                                              String.Format(Resources.SoftProcQuery, spName));
                }
            }
            return(proc);
        }
        public override int PrepareStatement(string sql, ref MyCatField[] parameters)
        {
            int statementId = base.PrepareStatement(sql, ref parameters);

            MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.StatementPrepared,
                                  Resources.TraceStatementPrepared, driverId, sql, statementId);
            return(statementId);
        }
        internal void HandleTimeoutOrThreadAbort(Exception ex)
        {
            bool isFatal = false;

            if (isKillQueryConnection)
            {
                // Special connection started to cancel a query.
                // Abort will prevent recursive connection spawning
                Abort();
                if (ex is TimeoutException)
                {
                    Throw(new MyCatException(Resources.Timeout, true, ex));
                }
                else
                {
                    return;
                }
            }

            try
            {
                // Do a fast cancel.The reason behind small values for connection
                // and command timeout is that we do not want user to wait longer
                // after command has already expired.
                // Microsoft's SqlClient seems to be using 5 seconds timeouts
                // here as well.
                // Read the  error packet with "interrupted" message.
                CancelQuery(5);
                driver.ResetTimeout(5000);
                if (Reader != null)
                {
#if NETSTANDARD1_3
                    foreach (var x in Reader)
                    {
                        x.Dispose();
                    }
#else
                    foreach (var x in Reader)
                    {
                        x.Close();
                    }
#endif
                    Reader = null;
                }
            }
            catch (Exception ex2)
            {
                MyCatTrace.LogWarning(ServerThread, "Could not kill query, " +
                                      " aborting connection. Exception was " + ex2.Message);
                Abort();
                isFatal = true;
            }
            if (ex is TimeoutException)
            {
                Throw(new MyCatException(Resources.Timeout, isFatal, ex));
            }
        }
        public override List <MyCatError> ReportWarnings(MyCatConnection connection)
        {
            List <MyCatError> warnings = base.ReportWarnings(connection);

            foreach (MyCatError warning in warnings)
            {
                MyCatTrace.TraceEvent(TraceEventType.Warning, MyCatTraceEventType.Warning,
                                      Resources.TraceWarning, driverId, warning.Level, warning.Code, warning.Message);
            }
            return(warnings);
        }
        public override void ExecuteStatement(MyCatPacket packetToExecute)
        {
            base.ExecuteStatement(packetToExecute);
            int pos = packetToExecute.Position;

            packetToExecute.Position = 1;
            int statementId = packetToExecute.ReadInteger(4);

            packetToExecute.Position = pos;

            MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.StatementExecuted,
                                  Resources.TraceStatementExecuted, driverId, statementId, ThreadID);
        }
 internal void Abort()
 {
     try
     {
         driver.Close();
     }
     catch (Exception ex)
     {
         MyCatTrace.LogWarning(ServerThread, String.Concat("Error occurred aborting the connection. Exception was: ", ex.Message));
     }
     finally
     {
         this.isInUse = false;
     }
     SetState(ConnectionState.Closed, true);
 }
        protected override long GetResult(int statementId, ref long affectedRows, ref long insertedId)
        {
            try
            {
                var fieldCount = base.GetResult(statementId, ref affectedRows, ref insertedId);
                MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.ResultOpened,
                                      Resources.TraceResult, driverId, fieldCount, affectedRows, insertedId);

                return(fieldCount);
            }
            catch (MyCatException ex)
            {
                // we got an error so we report it
                MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.Error,
                                      Resources.TraceOpenResultError, driverId, ex.Number, ex.Message);
                throw ex;
            }
        }
 public override bool FetchDataRow(int statementId, int columns)
 {
     try
     {
         bool b = base.FetchDataRow(statementId, columns);
         if (b)
         {
             rowSizeInBytes += (handler as NativeDriver).Packet.Length;
         }
         return(b);
     }
     catch (MyCatException ex)
     {
         MyCatTrace.TraceEvent(TraceEventType.Error, MyCatTraceEventType.Error,
                               Resources.TraceFetchError, driverId, ex.Number, ex.Message);
         throw ex;
     }
 }
Exemple #11
0
        public SystemPerformanceMonitor(MyCatConnection connection) : base(connection)
        {
            string categoryName = Resources.PerfMonCategoryName;

            if (connection.Settings.UsePerformanceMonitor && procedureHardQueries == null)
            {
                try
                {
                    procedureHardQueries = new PerformanceCounter(categoryName,
                                                                  "HardProcedureQueries", false);
                    procedureSoftQueries = new PerformanceCounter(categoryName,
                                                                  "SoftProcedureQueries", false);
                }
                catch (Exception ex)
                {
                    MyCatTrace.LogError(connection.ServerThread, ex.Message);
                }
            }
        }
        public override ResultSet NextResult(int statementId, bool force)
        {
            // first let's see if we already have a resultset on this statementId
            if (activeResult != null)
            {
                //oldRS = activeResults[statementId];
                if (Settings.UseUsageAdvisor)
                {
                    ReportUsageAdvisorWarnings(statementId, activeResult);
                }
                MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.ResultClosed,
                                      Resources.TraceResultClosed, driverId, activeResult.TotalRows, activeResult.SkippedRows,
                                      rowSizeInBytes);
                rowSizeInBytes = 0;
                activeResult   = null;
            }

            activeResult = base.NextResult(statementId, force);
            return(activeResult);
        }
        private Driver TryToGetDriver()
        {
            int count = Interlocked.Decrement(ref available);

            if (count < 0)
            {
                Interlocked.Increment(ref available);
                return(null);
            }
            try
            {
                Driver driver = GetPooledConnection();
                return(driver);
            }
            catch (Exception ex)
            {
                MyCatTrace.LogError(-1, ex.Message);
                Interlocked.Increment(ref available);
                throw;
            }
        }
Exemple #14
0
        /// <summary>
        /// Loads all the current character set names and ids for this server
        /// into the charSets hashtable
        /// </summary>
        private void LoadCharacterSets(MyCatConnection connection)
        {
            MyCatCommand cmd = new MyCatCommand("SHOW COLLATION", connection);

            // now we load all the currently active collations
            try
            {
                using (MyCatDataReader reader = cmd.ExecuteReader())
                {
                    charSets = new Dictionary <int, string>();
                    while (reader.Read())
                    {
                        charSets[Convert.ToInt32(reader["id"], NumberFormatInfo.InvariantInfo)] =
                            reader.GetString(reader.GetOrdinal("charset"));
                    }
                }
            }
            catch (Exception ex)
            {
                MyCatTrace.LogError(ThreadID, ex.Message);
                throw;
            }
        }
        public override void SendQuery(MyCatPacket p)
        {
            rowSizeInBytes = 0;
            string cmdText          = Encoding.GetString(p.Buffer, 5, p.Length - 5);
            string normalized_query = null;

            if (cmdText.Length > 300)
            {
                QueryNormalizer normalizer = new QueryNormalizer();
                normalized_query = normalizer.Normalize(cmdText);
                cmdText          = cmdText.Substring(0, 300);
            }

            base.SendQuery(p);

            MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.QueryOpened,
                                  Resources.TraceQueryOpened, driverId, ThreadID, cmdText);
            if (normalized_query != null)
            {
                MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.QueryNormalized,
                                      Resources.TraceQueryNormalized, driverId, ThreadID, normalized_query);
            }
        }
 public override void SetDatabase(string dbName)
 {
     base.SetDatabase(dbName);
     MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.NonQuery,
                           Resources.TraceSetDatabase, driverId, dbName);
 }
        private void ReportUsageAdvisorWarnings(int statementId, ResultSet rs)
        {
#if !RT
            if (!Settings.UseUsageAdvisor)
            {
                return;
            }

            if (HasStatus(ServerStatusFlags.NoIndex))
            {
                MyCatTrace.TraceEvent(TraceEventType.Warning, MyCatTraceEventType.UsageAdvisorWarning,
                                      Resources.TraceUAWarningNoIndex, driverId, UsageAdvisorWarningFlags.NoIndex);
            }
            else if (HasStatus(ServerStatusFlags.BadIndex))
            {
                MyCatTrace.TraceEvent(TraceEventType.Warning, MyCatTraceEventType.UsageAdvisorWarning,
                                      Resources.TraceUAWarningBadIndex, driverId, UsageAdvisorWarningFlags.BadIndex);
            }

            // report abandoned rows
            if (rs.SkippedRows > 0)
            {
                MyCatTrace.TraceEvent(TraceEventType.Warning, MyCatTraceEventType.UsageAdvisorWarning,
                                      Resources.TraceUAWarningSkippedRows, driverId, UsageAdvisorWarningFlags.SkippedRows, rs.SkippedRows);
            }

            // report not all fields accessed
            if (!AllFieldsAccessed(rs))
            {
                StringBuilder notAccessed = new StringBuilder("");
                string        delimiter   = "";
                for (int i = 0; i < rs.Size; i++)
                {
                    if (!rs.FieldRead(i))
                    {
                        notAccessed.AppendFormat("{0}{1}", delimiter, rs.Fields[i].ColumnName);
                        delimiter = ",";
                    }
                }
                MyCatTrace.TraceEvent(TraceEventType.Warning, MyCatTraceEventType.UsageAdvisorWarning,
                                      Resources.TraceUAWarningSkippedColumns, driverId, UsageAdvisorWarningFlags.SkippedColumns,
                                      notAccessed.ToString());
            }

            // report type conversions if any
            if (rs.Fields != null)
            {
                foreach (MyCatField f in rs.Fields)
                {
                    StringBuilder s         = new StringBuilder();
                    string        delimiter = "";
                    foreach (Type t in f.TypeConversions)
                    {
                        s.AppendFormat("{0}{1}", delimiter, t.Name);
                        delimiter = ",";
                    }
                    if (s.Length > 0)
                    {
                        MyCatTrace.TraceEvent(TraceEventType.Warning, MyCatTraceEventType.UsageAdvisorWarning,
                                              Resources.TraceUAWarningFieldConversion, driverId, UsageAdvisorWarningFlags.FieldConversion,
                                              f.ColumnName, s.ToString());
                    }
                }
            }
#endif
        }
 public override void Open()
 {
     base.Open();
     MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.ConnectionOpened,
                           Resources.TraceOpenConnection, driverId, Settings.ConnectionString, ThreadID);
 }
 public override void Close()
 {
     base.Close();
     MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.ConnectionClosed,
                           Resources.TraceCloseConnection, driverId);
 }
 public override void CloseStatement(int id)
 {
     base.CloseStatement(id);
     MyCatTrace.TraceEvent(TraceEventType.Information, MyCatTraceEventType.StatementClosed,
                           Resources.TraceStatementClosed, driverId, id);
 }