public static void TestMain() { _operationCanceledErrorMessage = SystemDataResourceManager.Instance.SQL_OperationCancelled; _severeErrorMessage = SystemDataResourceManager.Instance.SQL_SevereError; // pure random _randPool = new RandomizerPool(); SqlConnectionStringBuilder regularConnectionString = new SqlConnectionStringBuilder(); regularConnectionString.ConnectionString = DataTestClass.SQL2008_Master; regularConnectionString.MultipleActiveResultSets = false; List<string> connStrings = new List<string>(); connStrings.Add(regularConnectionString.ToString()); connStrings.Add(regularConnectionString.ToString()); regularConnectionString.MultipleActiveResultSets = true; connStrings.Add(regularConnectionString.ToString()); _connectionStrings = connStrings.ToArray(); _katmaiTypes = SqlRandomTypeInfoCollection.CreateSql2008Collection(); _endEvent = new ManualResetEvent(false); if (_randPool.ReproMode) { _runningThreads = 1; TestThread(); } else { for (int tcount = 0; tcount < ThreadCountDefault; tcount++) { Thread t = new Thread(TestThread); t.Start(); } } }
public static SqlRandomTable Create(SqlRandomizer rand, SqlRandomTypeInfoCollection sourceCollection, int maxColumnsCount, int rowCount, bool createPrimaryKeyColumn) { SqlRandomTableColumn[] testTypes = CreateRandTypes(rand, sourceCollection, maxColumnsCount, createPrimaryKeyColumn); SqlRandomTable table = new SqlRandomTable(testTypes, primaryKeyColumnIndex: createPrimaryKeyColumn ? (Nullable<int>)0 : null, estimatedRowCount: rowCount); table.AddRows(rand, rowCount); return table; }
private static void RunTest(SqlConnection con, RandomizerPool.Scope<SqlRandomizer> testScope, SqlRandomTypeInfoCollection types, Stopwatch watch) { Exception pendingException = null; string tempTableName = null; try { // select number of columns to use and null bitmap to test int columnsCount, rowsCount; testScope.Current.NextTableDimentions(MaxRows, MaxColumns, MaxTotal, out rowsCount, out columnsCount); SqlRandomTable table = SqlRandomTable.Create(testScope.Current, types, columnsCount, rowsCount, createPrimaryKeyColumn: true); long total = (long)rowsCount * columnsCount; Interlocked.Add(ref _totalValues, total); Interlocked.Increment(ref _totalTables); tempTableName = SqlRandomizer.GenerateUniqueTempTableNameForSqlServer(); table.GenerateTableOnServer(con, tempTableName); long prevTicks = watch.ElapsedTicks; watch.Start(); if (_randPool.ReproMode) { // perform one iteration only using (var iterationScope = testScope.NewScope<SqlRandomizer>()) { RunTestIteration(con, iterationScope.Current, table, tempTableName); Interlocked.Increment(ref _totalIterations); } } else { // continue with normal loop for (int i = 0; i < IterationsPerTableDefault && watch.Elapsed < TimeLimitDefault; i++) { using (var iterationScope = testScope.NewScope<SqlRandomizer>()) { RunTestIteration(con, iterationScope.Current, table, tempTableName); Interlocked.Increment(ref _totalIterations); } } } watch.Stop(); Interlocked.Add(ref _totalTicks, watch.ElapsedTicks - prevTicks); } catch (Exception e) { pendingException = e; throw; } finally { // keep the temp table for troubleshooting if debugger is attached // the thread is going down anyway and connection will be closed if (pendingException == null && tempTableName != null) { // destroy the temp table to free resources on the server SqlCommand cmd = con.CreateCommand(); cmd.CommandType = CommandType.Text; cmd.CommandText = "DROP TABLE " + tempTableName; try { cmd.ExecuteNonQuery(); } catch { } } } }
/// <summary> /// Creates random list of columns from the given source collection. The rules are: /// * table cannot contain more than 1024 non-sparse columns /// * total row size of non-sparse columns should not exceed 8060 or 8018 (with sparse) /// * column set column must be added if number of columns in total exceeds 1024 /// </summary> public static SqlRandomTableColumn[] CreateRandTypes(SqlRandomizer rand, SqlRandomTypeInfoCollection sourceCollection, int maxColumnsCount, bool createIdColumn) { var retColumns = new List<SqlRandomTableColumn>(maxColumnsCount); bool hasTimestamp = false; double totalRowSize = 0; int totalRegularColumns = 0; bool hasColumnSet = false; bool hasSparseColumns = false; int maxRowSize = MaxBytesPerRow; // set to MaxBytesPerRowWithSparse when sparse column is first added int i = 0; if (createIdColumn) { SqlRandomTypeInfo keyType = sourceCollection[SqlDbType.Int]; SqlRandomTableColumn keyColumn = keyType.CreateDefaultColumn(SqlRandomColumnOptions.None); retColumns.Add(keyColumn); totalRowSize += keyType.GetInRowSize(keyColumn, null); i++; totalRegularColumns++; } for (; i < maxColumnsCount; i++) { // select column options (sparse/column-set) bool isSparse; // must be set in the if/else flow below bool isColumnSet = false; if (totalRegularColumns >= MaxNonSparseColumns) { // reached the limit for regular columns if (!hasColumnSet) { // no column-set yet, stop unconditionally // this can happen if large char/binary value brought the row size total to a limit leaving no space for column-set break; } // there is a column set, enforce sparse from this point isSparse = true; } else if (i == (MaxNonSparseColumns - 1) && hasSparseColumns && !hasColumnSet) { // we almost reached the limit of regular & sparse columns with, but no column set added // to increase chances for >1024 columns, enforce column set now isColumnSet = true; isSparse = false; } else if (totalRowSize > MaxBytesPerRowWithSparse) { Debug.Assert(totalRowSize <= MaxBytesPerRow, "size over the max limit"); Debug.Assert(!hasSparseColumns, "should not have sparse columns after MaxBytesPerRowWithSparse (check maxRowSize)"); // cannot insert sparse from this point isSparse = false; isColumnSet = false; } else { // check how close we are to the limit of the row size int sparseProbability; if (totalRowSize < 100) { sparseProbability = 2; } else if (totalRowSize < MaxBytesPerRowWithSparse / 2) { sparseProbability = 10; } else if (totalRowSize < (MaxBytesPerRowWithSparse - s_columnSetSafetyRange)) { sparseProbability = 50; } else { // close to the row size limit, special case if (!hasColumnSet) { // if we have not added column set column yet // column-set is a regular column and its size counts towards row size, so time to add it isColumnSet = true; sparseProbability = -1; // not used } else { sparseProbability = 90; } } if (!isColumnSet) { isSparse = (rand.Next(100) < sparseProbability); if (!isSparse && !hasColumnSet) { // if decided to add regular column, give it a (low) chance to inject a column set at any position isColumnSet = rand.Next(100) < 1; } } else { isSparse = false; } } // select the type SqlRandomTypeInfo ti; SqlRandomColumnOptions options = SqlRandomColumnOptions.None; if (isSparse) { Debug.Assert(!isColumnSet, "should not have both sparse and column set flags set"); ti = sourceCollection.NextSparse(rand); Debug.Assert(ti.CanBeSparseColumn, "NextSparse must return only types that can be sparse"); options |= SqlRandomColumnOptions.Sparse; } else if (isColumnSet) { Debug.Assert(!hasColumnSet, "there is already a column set, we should not set isColumnSet again above"); ti = sourceCollection[SqlDbType.Xml]; options |= SqlRandomColumnOptions.ColumnSet; } else { // regular column ti = sourceCollection.Next(rand); if (ti.Type == SqlDbType.Timestamp) { // while table can contain single timestamp column only, there is no way to insert values into it. // thus, do not allow this if (hasTimestamp || maxColumnsCount == 1) { ti = sourceCollection[SqlDbType.Int]; } else { // table cannot have two timestamp columns hasTimestamp = true; } } } SqlRandomTableColumn col = ti.CreateRandomColumn(rand, options); if (!isSparse) { double rowSize = ti.GetInRowSize(col, DBNull.Value); int overhead = GetRowOverhead(retColumns.Count + 1); // +1 for this column if (totalRowSize + rowSize + overhead > maxRowSize) { // cannot use this column // note that if this column is a column set column continue; } totalRowSize += rowSize; totalRegularColumns++; } // else - sparse columns are not counted towards row size when table is created (they are when inserting new row with non-null value in the sparse column)... retColumns.Add(col); // after adding the column, update the state if (isColumnSet) { hasColumnSet = true; } if (isSparse) { hasSparseColumns = true; maxRowSize = MaxBytesPerRowWithSparse; // reduce the max row size } } return retColumns.ToArray(); }