/// <summary>
/// Interface method to start service
/// </summary>
protected async override Task ExecuteAsync(CancellationToken stoppingToken)
{
await Task.Yield();
if (!settings.Enabled)
{
logger.LogInformation("ReceiverHostedService is not enabled");
}
else if (settings.MessageTypes == null)
{
logger.LogError("Configuration error: No event types have been configured for the receiverhostedeservice");
}
else
{
while (!stoppingToken.IsCancellationRequested)
{
if (receiver == null || receiver.Link == null || receiver.Link.IsClosed)
{
DisposeReceiver();
receiver = services.GetService <IDomainEventReceiver>();
logger.LogInformation($"Starting receiver...");
try {
receiver.StartAndListen(settings.MessageTypes);
logger.LogInformation("Receiver started");
} catch (Exception e) {
logger.LogCritical($"Unable to start receiver. \n {e}");
}
receiver.Closed += OnReceiverClosed;
}
await Task.Delay(TimeSpan.FromSeconds(settings.TimedInterval)).ConfigureAwait(false);
}
}
}
/// <summary>
/// Interface method to start service
/// </summary>
protected async override Task ExecuteAsync(CancellationToken cancellationToken)
{
if (settings.Disabled)
{
logger.LogInformation("Receiverhostedservice is disabled");
}
else if (settings.MessageTypes == null)
{
logger.LogError("Configuration error: No event types have been configured for the receiverhostedeservice");
}
else
{
while (!cancellationToken.IsCancellationRequested)
{
if (receiver == null || receiver.Link == null || receiver.Link.IsClosed)
{
DisposeReceiver();
receiver = services.GetService <IDomainEventReceiver>();
logger.LogInformation($"Starting receiver...");
try {
receiver.Receive(settings.MessageTypes);
logger.LogInformation("Receiver started");
} catch (Exception e) {
logger.LogCritical($"Unable to start receiver. \n {e}");
}
receiver.Closed += OnReceiverClosed;
}
await Task.Delay(settings.TimedInterval);
}
}
}
private void CloseReceiver()
{
try {
receiver?.Close();
} catch {
// disregard while shutting things down
} finally {
receiver = null;
}
}
private void OnReceiverClosed(IDomainEventReceiver receiver, DomainEventError error)
{
if (error == null)
{
logger.LogError("Handling OnReceiverClosed event with no error information");
}
else
{
logger.LogError($"Handling OnReceiverClosed event with error: {error.Condition} - {error.Description}");
}
}
/// <summary>
/// Interface method to start service
/// </summary>
public Task StartAsync(CancellationToken cancellationToken)
{
logger.LogInformation("Receive Hosted Service is starting.");
var eventTypeLookup = RegisterMessageTypes();
receiver = services.GetService <IDomainEventReceiver>();
logger.LogInformation("Starting receiver");
receiver.Closed += OnReceiverClosed;
receiver.Receive(eventTypeLookup);
logger.LogInformation("Receiver started");
return(Task.CompletedTask);
}
private void OnReceiverClosed(IDomainEventReceiver receiver, DomainEventError error)
{
logger.LogError($"Receiver closed: {error.Condition} - {error.Description}");
}
