protected override async Task ExecuteAsync(CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
try
{
bool anyChanged = false;
Logger.LogInfo("Poll database...");
var competitionClasses = _results.Processor.GetClasses();
Logger.LogInfo($"Found {competitionClasses.Count} classes");
foreach (var competitionClass in competitionClasses)
{
if (!_lastCheckDictionary.TryGetValue(competitionClass.Id, out DateTime lastCheckTime))
{
lastCheckTime = DateTime.MinValue;
}
Logger.LogInfo($"Checking new results in '{competitionClass.ShortName}' ({competitionClass.Id}) since {lastCheckTime}");
bool resultsChanged = _results.Processor.ClassHasNewResults(competitionClass.Id, lastCheckTime);
if (resultsChanged)
{
anyChanged = true;
Logger.LogInfo($"Fetching results for {competitionClass.ShortName}");
var results = _results.Processor.GetClass(competitionClass.Id);
await MqttPublisher.PublishAsync(results);
var lastModified = results.Results.Aggregate((r1, r2) => r1.ModifyDate > r2.ModifyDate ? r1 : r2).ModifyDate;
Logger.LogInfo($"Updating last check time for '{competitionClass.ShortName}' to {lastModified}");
_lastCheckDictionary[competitionClass.Id] = lastModified;
}
else
{
Logger.LogInfo("No new results found");
}
}
if (anyChanged)
{
var finish = _results.Processor.Finish(50);
await MqttPublisher.PublishAsync(finish);
}
var memoryUsed = GC.GetTotalMemory(false);
Logger.LogInfo($"Memory usage: { +memoryUsed / 1024 / 1024 } MB");
if (memoryUsed >= 70 * 1024 * 1024)
{
Logger.LogInfo("Forcing garbage collect");
GC.Collect();
Logger.LogInfo($"Memory usage after collect: { GC.GetTotalMemory(true) / 1024 / 1024 } MB");
}
}
catch (Exception exception)
{
Logger.LogError("Failed poll database", exception);
}
await Task.Delay(TimeSpan.FromMilliseconds(_conf.PollWaitTime), cancellationToken);
}
}
