private bool ReadCursor()
{
if (_cursor == null)
{
return(false);
}
StringBuilder sbDumpCursor = new StringBuilder();
Stopwatch swReadCursor = new Stopwatch();
swReadCursor.Start();
_cursor.Begin();
string attributeName, attributeValue, columnName, columnValue = Str.Empty;
int attributeSize, columnSize = 0;
//read all attributes (once)
foreach (string attrName in _cursor.AttributesNames)
{
attributeName = $"[attribute] {attrName}";
attributeValue = _cursor.GetAttribute(attrName);
swReadCursor.Stop(); //stop watch while add/update dictionnary and dump
//attribute size
attributeSize = attributeValue.Length;
if (cursorSizeBreakdown.ContainsKey(attributeName))
{
cursorSizeBreakdown[attributeName] += attributeSize;
}
else
{
cursorSizeBreakdown.Add(attributeName, attributeSize);
}
//dump attribute name/value
if (_threadGroup.conf.dumpCursor)
{
sbDumpCursor.AppendLine($"{attributeName}{_threadGroup.conf.outputCSVSeparator}{attributeValue}");
}
//restart watch
swReadCursor.Start();
}
//dump column name
if (_threadGroup.conf.dumpCursor)
{
for (int i = 0; i < _cursor.ColumnCount; i++)
{
columnName = $"[column] {_cursor.GetColumnName(i)}";
sbDumpCursor.Append($"{columnName}{_threadGroup.conf.outputCSVSeparator}");
}
sbDumpCursor.Append(Environment.NewLine);
}
while (!_cursor.End() && _cursor.CursorRowCount > 0)
{
//read all columns from the cursor (all rows)
for (int i = 0; i < _cursor.ColumnCount; i++)
{
columnName = $"[column] {_cursor.GetColumnName(i)}";
columnValue = _cursor.GetColumn(i);
swReadCursor.Stop(); //stop watch while add/update dictionnary and dump
//column value size
columnSize = columnValue.Length;
if (cursorSizeBreakdown.ContainsKey(columnName))
{
cursorSizeBreakdown[columnName] += columnSize;
}
else
{
cursorSizeBreakdown.Add(columnName, columnSize);
}
//dump column value
if (_threadGroup.conf.dumpCursor)
{
sbDumpCursor.Append($"{columnValue}{_threadGroup.conf.outputCSVSeparator}");
}
}
if (_threadGroup.conf.dumpCursor)
{
sbDumpCursor.Append(Environment.NewLine);
}
//restart watch
swReadCursor.Start();
_cursor.MoveNext();
}
swReadCursor.Stop();
readCursorTimer = swReadCursor.ElapsedMilliseconds;
AddToTotalTime(readCursorTimer);
swReadCursor.Reset();
Sys.Log2(50, $"{{{threadId}}} Thread group [{threadGroupName}][{iteration}] ReadCursor [{Sys.TimerGetText(readCursorTimer)}]");
//write cursor
//TODO - dump separator exist in column / attr ?
//TODO use log array ?
if (_threadGroup.conf.dumpCursor && processingTime >= _threadGroup.conf.dumpCursorMinProcessingTime && cursorSizeMB >= _threadGroup.conf.dumpCursorMinSize)
{
string dumpQueryFilePath = Toolbox.GetOutputFilePath(_threadGroup.conf.outputFolderPath, $"cursor_{_threadGroup.name}_{iteration}", "csv", "Cursors");
Stopwatch swDumpCursor = new Stopwatch();
swDumpCursor.Start();
if (Toolbox.DumpFile(dumpQueryFilePath, sbDumpCursor.ToString()))
{
swDumpCursor.Stop();
Sys.Log($"{{{threadId}}} Thread group [{threadGroupName}][{iteration}] Create Cursor dump [{dumpQueryFilePath}] [{Sys.TimerGetText(swDumpCursor.ElapsedMilliseconds)}]");
}
}
else
{
Sys.Log2(50, $"{{{threadId}}} Thread group [{threadGroupName}][{iteration}] Skip Cursor dump, ProcessingTime [{processingTime.ToString()}] < Minimum query processing time [{_threadGroup.conf.dumpCursorMinProcessingTime.ToString()}] or Cursor Size [{cursorSizeMB.ToString()}] < Minimun cursor size [{_threadGroup.conf.dumpCursorMinSize.ToString()}]");
}
return(true);
}