private static async Task ExecuteIterationAsync(
string rootDir,
string resultsPath,
string variantName,
string solutionName,
HttpClient httpClient,
int iterations,
int maxConcurrency,
List <RequestNode> topologicalOrder,
int iteration,
bool noDependencies)
{
var logPrefix = $"[{iteration}/{iterations}{(iteration == 0 ? " (warm-up)" : string.Empty)}]";
string requestsFileName;
if (variantName == null)
{
requestsFileName = $"{ReplayLogPrefix}-{solutionName}-{Helper.GetLogTimestamp()}.csv";
}
else
{
requestsFileName = $"{ReplayLogPrefix}-{variantName}-{solutionName}-{Helper.GetLogTimestamp()}.csv";
}
var logsDir = Path.Combine(rootDir, "out", "logs");
if (!Directory.Exists(logsDir))
{
Directory.CreateDirectory(logsDir);
}
var requestsPath = Path.Combine(logsDir, requestsFileName);
var stopwatch = new Stopwatch();
using (var writer = new BackgroundCsvWriter <ReplayRequestRecord>(requestsPath, gzip: false))
{
Console.WriteLine($"{logPrefix} Starting...");
var nodeToTask = new Dictionary <RequestNode, Task>();
var throttle = new SemaphoreSlim(maxConcurrency);
var consoleLock = new object();
stopwatch.Start();
foreach (var node in topologicalOrder)
{
nodeToTask.Add(node, GetRequestTask(nodeToTask, throttle, consoleLock, httpClient, node, writer));
}
try
{
await Task.WhenAll(nodeToTask.Values);
}
catch (Exception ex)
{
Console.WriteLine("At least one request failed.");
Console.WriteLine(ex.ToString());
}
stopwatch.Stop();
Console.WriteLine($"{logPrefix} Completed in {stopwatch.ElapsedMilliseconds}ms.");
}
CsvUtility.Append(resultsPath, new ReplayResultRecord
{
TimestampUtc = Helper.GetExcelTimestamp(DateTimeOffset.UtcNow),
MachineName = Environment.MachineName,
Iteration = iteration,
IsWarmUp = iteration == 0,
Iterations = iterations,
VariantName = variantName,
SolutionName = solutionName,
RequestCount = topologicalOrder.Count,
DurationMs = stopwatch.Elapsed.TotalMilliseconds,
MaxConcurrency = maxConcurrency,
LogFileName = requestsFileName,
Dependencies = !noDependencies,
});
}