public Task StartReceiver <T>(string storageConnection) where T : IEventProcessor
{
if (string.IsNullOrWhiteSpace(Listen_EventHubConnectionstring))
{
throw new ArgumentNullException(nameof(Listen_EventHubConnectionstring));
}
var eventhubclient = EventHubClient.CreateFromConnectionString(Listen_EventHubConnectionstring, EventHubPath);
var defaultGroup = eventhubclient.GetDefaultConsumerGroup();
EventProc = new EventProcessorHost(AppDomain.CurrentDomain.FriendlyName, eventhubclient.Path, defaultGroup.GroupName, Listen_EventHubConnectionstring, storageConnection);
var opt = new EventProcessorOptions
{
InitialOffsetProvider = partitionId => DateTime.UtcNow.AddHours(-1),
PrefetchCount = 50,
MaxBatchSize = 50
};
opt.ExceptionReceived += (sender, e) => {
var errorLogger = new FileLogger(filePrefix: "EventProcessorUnhandledExceptions_", async: true);
errorLogger.AddRow(sender?.ToString() ?? "Sender was null" + Environment.NewLine + e?.ToString() ?? "e was null" + Environment.NewLine + e?.Exception?.ToString() ?? "e.exception was null");
};
return(EventProc.RegisterEventProcessorAsync <T>(opt));
}
public Task <string> StoreEventsAsync(List <SystemEvent> events)
{
SystemEvent currentEvent = null;
try
{
foreach (var @event in events)
{
currentEvent = @event;
using (var connection = new SqlConnection(ConnectionString))
{
connection.Open();
var query = GenerateQuery();
using (SqlCommand cmd = new SqlCommand(query, connection))
{
AddParametersToCommand(cmd, @event);
cmd.ExecuteNonQuery();
}
}
}
}
catch (Exception ex)
{
Logger.AddRow("!!ERROR!! during DB save of events. " + ex);
var backUpStorage = new FileLogger(filePrefix: "failedSQLInsert_", maxIterations: 20, maxFilesize: 1024 * 2048, async: true);
backUpStorage.AddRow(JsonConvert.SerializeObject(currentEvent));
return(Task.Factory.StartNew(() => { return "Exception when saving to DB"; }));
}
return(Task.Factory.StartNew(() => { return "Events saved to DB"; }));
}
