/// <summary>
/// Setting up QueryParamsWorker for finding and updating UI for query params.
/// </summary>
/// <param name="speed">Single, Quick, Full</param>
/// <param name="logFile">Log File Path</param>
public void FindAndSetQueryParamFields(FindQueryParamsSpeed speed, string logFile)
{
queryParamsWorker = new BackgroundWorker();
queryParamsWorker.DoWork += (obj, e) => QueryParamsWorkerDoWork(speed, logFile);
queryParamsWorker.RunWorkerCompleted += QueryParamsWorkerCompleted;
StartWaiting(true);
queryParamsWorker.RunWorkerAsync();
}
/// <summary>
/// Look through the log file and find query parameters available for selection.
/// </summary>
/// <param name="method">Single, Quick or Full.</param>
/// <param name="logFile">Log file path. Kept as param so unit testing is easier.</param>
/// <returns></returns>
public List <string> FindQueryParams(FindQueryParamsSpeed method, string logFile)
{
var result = new List <string>();
// We continuously build up this hashset of query parameters, only adding new values to it.
var queryParamsHash = new HashSet <string>();
switch (method)
{
// Reads second line only. First line is the headers.
case FindQueryParamsSpeed.Single:
File.ReadLines(logFile).Take(2).ToList().ForEach(x => queryParamsHash.UnionWith(ParseLineForQueryParamKeys(x)));
break;
// Reads top 5% lines. Does this on single thread.
case FindQueryParamsSpeed.Quick:
int totalRows = int.Parse(lbl_TotalRowsValue.Text);
int fivePercent = totalRows / 20;
int linesToParse = (fivePercent > 0) ? fivePercent : 2;
File.ReadLines(logFile).Take(linesToParse).ToList().ForEach(x => queryParamsHash.UnionWith(ParseLineForQueryParamKeys(x)));
break;
// Reads all lines. Uses Parralel to make this super fast and proper sick yo.
case FindQueryParamsSpeed.Full:
Parallel.ForEach(File.ReadLines(logFile), (line, _, lineNumber) => {
queryParamsHash.UnionWith(ParseLineForQueryParamKeys(line));
});
break;
}
// Clean up found query params and sort.
result = queryParamsHash.Where(s => !string.IsNullOrWhiteSpace(s)).ToList();
result.Sort();
return(result);
}
/// <summary>
/// QueryParamsWorker Work task. Finds the Query Params and adds to global params object.
/// </summary>
/// <param name="speed">Single, Quick, Full</param>
/// <param name="logFile">Log file path</param>
private void QueryParamsWorkerDoWork(FindQueryParamsSpeed speed, string logFile)
{
AddToGlobalQueryParams(FindQueryParams(speed, logFile));
}
