protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
_logger.LogInformation("Starting route network event consumer worker at: {time}", DateTimeOffset.Now);
try
{
if (String.IsNullOrEmpty(_kafkaSetting.RouteNetworkEventTopic))
{
throw new ApplicationException("RouteNetworkEventTopic Kafka app setting must be set!");
}
var toposConfig = _eventDispatcher.Config("route_network_event_" + Guid.NewGuid(), c => {
var kafkaConfig = c.UseKafka(_kafkaSetting.Server);
if (_kafkaSetting.CertificateFilename != null)
{
kafkaConfig.WithCertificate(_kafkaSetting.CertificateFilename);
}
})
.Logging(l => l.UseSerilog())
.Positions(p => p.StoreInMemory(_positionsStorage))
.Topics(t => t.Subscribe(_kafkaSetting.RouteNetworkEventTopic));
_eventDispatcher.OnEvent.Subscribe(_routeNetworkEventHandler);
_kafkaConsumer = toposConfig.Start();
var inMemRouteNetworkState = (InMemRouteNetworkState)_routeNetworkState;
// Wait for load mode to create an initial version/state
_logger.LogInformation("Starting route network events load mode...");
bool loadFinish = false;
if (loadFinish)
{
_logger.LogError("NOTICE THAT WAITING FOR ROUTE EVENTS LOADING IS DISABLED!!!");
}
while (!stoppingToken.IsCancellationRequested && !loadFinish)
{
_logger.LogDebug("Waiting for load mode to finish creating initial state...");
_logger.LogInformation($"{inMemRouteNetworkState.NumberOfObjectsLoaded} route network Kafka events processed.");
DateTime waitStartTimestamp = DateTime.UtcNow;
await Task.Delay(5000, stoppingToken);
TimeSpan timespan = waitStartTimestamp - inMemRouteNetworkState.LastEventRecievedTimestamp;
if (timespan.TotalSeconds > 20)
{
loadFinish = true;
}
}
((InMemRouteNetworkState)_routeNetworkState).FinishLoadMode();
_logger.LogInformation("Loading of initial route network state finished.");
// Dehydrate projections
LogMenUsage();
_logger.LogInformation("Start dehydrate in-memory projections...");
_eventStore.DehydrateProjections();
_logger.LogInformation("Finish dehydrating in-memory projections.");
LogMenUsage();
// We are now ready to serve the public if the loaded objects are bigger than 0
if (inMemRouteNetworkState.NumberOfObjectsLoaded > 0)
{
File.Create("/tmp/healthy");
_logger.LogInformation("Healhty file written writen to tmp.");
}
else
{
throw new ApplicationException("Recieved no route network elements from Kafka topic.");
}
// Start conversion
new ConversionRunner(_loggerFactory, _eventStore, _geoDatabaseSetting, _commandDispatcher, _queryDispatcher).Run();
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
await Task.CompletedTask;
}