public async Task StartAsync(CancellationToken cancellationToken)
{
_logger.LogInformation("Background cache updater is starting");
await _apiClient.LoginAsync();
RunTaskLoop(_cancellationTokenSource.Token);
_logger.LogInformation("Background cache updater started");
}
public async Task RunSeedingAsync(CancellationToken cancellationToken)
{
_logger.LogInformation("Start seeding data of 14 days");
if (_apiSvc.CurrentIdentity == null)
{
var id = await _apiSvc.LoginAsync();
if (id == null)
{
_logger.LogError("MW failed to log in");
return;
}
}
var end = DateTimeOffset.UtcNow;
var b = end.Subtract(TimeSpan.FromDays(14));
int retryCount = 0;
do
{
try
{
var tsSamples = new List <ContribSampleEntity>();
var s = b.AddHours(1);
var changes = await _apiSvc.GetRecentChangesSinceAsync(b, 0, s);
_logger.LogInformation($"Get changes from {b} to {s}: {changes.Count} items");
var userGrouping = changes.Where(g => g.User != null).GroupBy(g => g.User);
foreach (var g in userGrouping)
{
var count = g.Count();
tsSamples.Add(new ContribSampleEntity(g.Key, b, count));
}
await _tsdb.IngestSamplesAsync(tsSamples, cancellationToken);
b = s;
retryCount = 0;
}
catch (Exception exc)
{
_logger.LogError(exc, "Caught an error and enter retry.");
if (retryCount > 3)
{
break;
}
else
{
retryCount++;
}
}
}while (b < end && !cancellationToken.IsCancellationRequested);
await _tsdb.FlushCacheAsync(cancellationToken);
_logger.LogInformation("Seeding completed");
}
private async Task <IPrincipal> RefreshSessionAsync()
{
var principal = await _apiSvc.LoginAsync();
if (principal != null)
{
_logger.LogInformation($"MW logged in as {principal.Identity.Name}");
_lastLogin = DateTimeOffset.UtcNow;
}
return(principal);
}