/// <summary>
/// Publishes the provided <paramref name="command"/> on the command bus.
/// </summary>
public virtual void Publish <TCommand>(TCommand command)
where TCommand : ICommand <TAuthenticationToken>
{
if (command == null)
{
Logger.LogDebug("No command to publish.");
return;
}
DateTimeOffset startedAt = DateTimeOffset.UtcNow;
Stopwatch mainStopWatch = Stopwatch.StartNew();
string responseCode = "200";
bool wasSuccessfull = false;
IDictionary <string, string> telemetryProperties = new Dictionary <string, string> {
{ "Type", "Azure/EventHub" }
};
string telemetryName = string.Format("{0}/{1}", command.GetType().FullName, command.Id);
var telemeteredCommand = command as ITelemeteredMessage;
if (telemeteredCommand != null)
{
telemetryName = telemeteredCommand.TelemetryName;
}
telemetryName = string.Format("Command/{0}", telemetryName);
try
{
if (!AzureBusHelper.PrepareAndValidateCommand(command, "Azure-EventHub"))
{
return;
}
var brokeredMessage = CreateBrokeredMessage(MessageSerialiser.SerialiseCommand, command.GetType(), command);
try
{
#if NET452
EventHubPublisher.Send(brokeredMessage);
#endif
#if NETSTANDARD2_0
EventHubPublisher.SendAsync(brokeredMessage).Wait();
#endif
}
catch (Exception exception)
{
responseCode = "500";
Logger.LogError("An issue occurred while trying to publish a command.", exception: exception, metaData: new Dictionary <string, object> {
{ "Command", command }
});
throw;
}
Logger.LogInfo(string.Format("A command was sent of type {0}.", command.GetType().FullName));
wasSuccessfull = true;
}
finally
{
mainStopWatch.Stop();
TelemetryHelper.TrackDependency("Azure/EventHub/CommandBus", "Command", telemetryName, null, startedAt, mainStopWatch.Elapsed, responseCode, wasSuccessfull, telemetryProperties);
}
}
/// <summary>
/// Publishes the provided <paramref name="event"/> on the event bus.
/// </summary>
public virtual void Publish <TEvent>(TEvent @event)
where TEvent : IEvent <TAuthenticationToken>
{
if (@event == null)
{
Logger.LogDebug("No event to publish.");
return;
}
DateTimeOffset startedAt = DateTimeOffset.UtcNow;
Stopwatch mainStopWatch = Stopwatch.StartNew();
string responseCode = "200";
bool wasSuccessfull = false;
IDictionary <string, string> telemetryProperties = new Dictionary <string, string> {
{ "Type", "Azure/EventHub" }
};
string telemetryName = string.Format("{0}/{1}/{2}", @event.GetType().FullName, @event.GetIdentity(), @event.Id);
var telemeteredEvent = @event as ITelemeteredMessage;
if (telemeteredEvent != null)
{
telemetryName = telemeteredEvent.TelemetryName;
}
telemetryName = string.Format("Event/{0}", telemetryName);
try
{
if (!AzureBusHelper.PrepareAndValidateEvent(@event, "Azure-EventHub"))
{
return;
}
try
{
var brokeredMessage = CreateBrokeredMessage(MessageSerialiser.SerialiseEvent, @event.GetType(), @event);
#if NET452
EventHubPublisher.Send(brokeredMessage);
#endif
#if NETSTANDARD2_0
EventHubPublisher.SendAsync(brokeredMessage).Wait();
#endif
wasSuccessfull = true;
}
catch (QuotaExceededException exception)
{
responseCode = "429";
Logger.LogError("The size of the event being sent was too large.", exception: exception, metaData: new Dictionary <string, object> {
{ "Event", @event }
});
throw;
}
catch (Exception exception)
{
responseCode = "500";
Logger.LogError("An issue occurred while trying to publish an event.", exception: exception, metaData: new Dictionary <string, object> {
{ "Event", @event }
});
throw;
}
}
finally
{
TelemetryHelper.TrackDependency("Azure/EventHub/EventBus", "Event", telemetryName, null, startedAt, mainStopWatch.Elapsed, responseCode, wasSuccessfull, telemetryProperties);
}
Logger.LogInfo(string.Format("An event was published with the id '{0}' was of type {1}.", @event.Id, @event.GetType().FullName));
}
/// <summary>
/// Publishes the provided <paramref name="events"/> on the event bus.
/// </summary>
public virtual void Publish <TEvent>(IEnumerable <TEvent> events)
where TEvent : IEvent <TAuthenticationToken>
{
if (events == null)
{
Logger.LogDebug("No events to publish.");
return;
}
IList <TEvent> sourceEvents = events.ToList();
if (!sourceEvents.Any())
{
Logger.LogDebug("An empty collection of events to publish.");
return;
}
DateTimeOffset startedAt = DateTimeOffset.UtcNow;
Stopwatch mainStopWatch = Stopwatch.StartNew();
string responseCode = "200";
bool wasSuccessfull = false;
IDictionary <string, string> telemetryProperties = new Dictionary <string, string> {
{ "Type", "Azure/EventHub" }
};
string telemetryName = "Events";
string telemetryNames = string.Empty;
foreach (TEvent @event in sourceEvents)
{
string subTelemetryName = string.Format("{0}/{1}/{2}", @event.GetType().FullName, @event.GetIdentity(), @event.Id);
var telemeteredEvent = @event as ITelemeteredMessage;
if (telemeteredEvent != null)
{
subTelemetryName = telemeteredEvent.TelemetryName;
}
telemetryNames = string.Format("{0}{1},", telemetryNames, subTelemetryName);
}
if (telemetryNames.Length > 0)
{
telemetryNames = telemetryNames.Substring(0, telemetryNames.Length - 1);
}
telemetryProperties.Add("Events", telemetryNames);
try
{
IList <string> sourceEventMessages = new List <string>();
IList <EventData> brokeredMessages = new List <EventData>(sourceEvents.Count);
foreach (TEvent @event in sourceEvents)
{
if (!AzureBusHelper.PrepareAndValidateEvent(@event, "Azure-EventHub"))
{
continue;
}
var brokeredMessage = CreateBrokeredMessage(MessageSerialiser.SerialiseEvent, @event.GetType(), @event);
brokeredMessages.Add(brokeredMessage);
sourceEventMessages.Add(string.Format("A command was sent of type {0}.", @event.GetType().FullName));
}
try
{
if (brokeredMessages.Any())
{
#if NET452
EventHubPublisher.SendBatch(brokeredMessages);
#endif
#if NETSTANDARD2_0
EventHubPublisher.SendAsync(brokeredMessages).Wait();
#endif
}
else
{
Logger.LogDebug("An empty collection of events to publish post validation.");
}
wasSuccessfull = true;
}
catch (QuotaExceededException exception)
{
responseCode = "429";
Logger.LogError("The size of the event being sent was too large.", exception: exception, metaData: new Dictionary <string, object> {
{ "Events", sourceEvents }
});
throw;
}
catch (Exception exception)
{
responseCode = "500";
Logger.LogError("An issue occurred while trying to publish a event.", exception: exception, metaData: new Dictionary <string, object> {
{ "Events", sourceEvents }
});
throw;
}
foreach (string message in sourceEventMessages)
{
Logger.LogInfo(message);
}
wasSuccessfull = true;
}
finally
{
mainStopWatch.Stop();
TelemetryHelper.TrackDependency("Azure/EventHub/EventBus", "Event", telemetryName, null, startedAt, mainStopWatch.Elapsed, responseCode, wasSuccessfull, telemetryProperties);
}
}
/// <summary>
/// Sends the provided <paramref name="command"></paramref> and waits for an event of <typeparamref name="TEvent"/> or exits if the specified timeout is expired.
/// </summary>
/// <param name="command">The <typeparamref name="TCommand"/> to send.</param>
/// <param name="condition">A delegate to be executed over and over until it returns the <typeparamref name="TEvent"/> that is desired, return null to keep trying.</param>
/// <param name="millisecondsTimeout">The number of milliseconds to wait, or <see cref="F:System.Threading.Timeout.Infinite"/> (-1) to wait indefinitely.</param>
/// <param name="eventReceiver">If provided, is the <see cref="IEventReceiver{TAuthenticationToken}" /> that the event is expected to be returned on.</param>
public virtual TEvent PublishAndWait <TCommand, TEvent>(TCommand command, Func <IEnumerable <IEvent <TAuthenticationToken> >, TEvent> condition, int millisecondsTimeout,
IEventReceiver <TAuthenticationToken> eventReceiver = null) where TCommand : ICommand <TAuthenticationToken>
{
if (command == null)
{
Logger.LogDebug("No command to publish.");
return((TEvent)(object)null);
}
DateTimeOffset startedAt = DateTimeOffset.UtcNow;
Stopwatch mainStopWatch = Stopwatch.StartNew();
string responseCode = "200";
bool wasSuccessfull = false;
IDictionary <string, string> telemetryProperties = new Dictionary <string, string> {
{ "Type", "Azure/EventHub" }
};
string telemetryName = string.Format("{0}/{1}", command.GetType().FullName, command.Id);
var telemeteredCommand = command as ITelemeteredMessage;
if (telemeteredCommand != null)
{
telemetryName = telemeteredCommand.TelemetryName;
}
telemetryName = string.Format("Command/{0}", telemetryName);
TEvent result;
try
{
if (eventReceiver != null)
{
throw new NotSupportedException("Specifying a different event receiver is not yet supported.");
}
if (!AzureBusHelper.PrepareAndValidateCommand(command, "Azure-EventHub"))
{
return((TEvent)(object)null);
}
result = (TEvent)(object)null;
EventWaits.Add(command.CorrelationId, new List <IEvent <TAuthenticationToken> >());
try
{
var brokeredMessage = CreateBrokeredMessage(MessageSerialiser.SerialiseCommand, command.GetType(), command);
#if NET452
EventHubPublisher.Send(brokeredMessage);
#endif
#if NETSTANDARD2_0
EventHubPublisher.SendAsync(brokeredMessage).Wait();
#endif
}
catch (Exception exception)
{
responseCode = "500";
Logger.LogError("An issue occurred while trying to publish a command.", exception: exception, metaData: new Dictionary <string, object> {
{ "Command", command }
});
throw;
}
Logger.LogInfo(string.Format("A command was sent of type {0}.", command.GetType().FullName));
wasSuccessfull = true;
}
finally
{
mainStopWatch.Stop();
TelemetryHelper.TrackDependency("Azure/EventHub/CommandBus", "Command", telemetryName, null, startedAt, mainStopWatch.Elapsed, responseCode, wasSuccessfull, telemetryProperties);
}
SpinWait.SpinUntil(() =>
{
IList <IEvent <TAuthenticationToken> > events = EventWaits[command.CorrelationId];
result = condition(events);
return(result != null);
}, millisecondsTimeout, 1000);
TelemetryHelper.TrackDependency("Azure/EventHub/CommandBus", "Command/AndWait", string.Format("Command/AndWait{0}", telemetryName.Substring(7)), null, startedAt, mainStopWatch.Elapsed, responseCode, wasSuccessfull, telemetryProperties);
return(result);
}