public MassTransitTriggerListener(IMassTransitListenerFactory listenerFactory,
string busName,
string queueName,
TriggerParameterMode triggerParameterMode,
SessionUsage sessionUsage,
ITriggeredFunctionExecutor contextExecutor)
{
BusControl = listenerFactory.GetListener <TMessage>(busName, queueName, triggerParameterMode, sessionUsage, contextExecutor);
}
public MassTransitTriggerBinding(IMassTransitListenerFactory listenerFactory, string busName, string queueName, TriggerParameterMode triggerParameterMode, SessionUsage sessionUsage, ParameterInfo parameter)
{
MassTransitListenerFactory = listenerFactory;
BusName = busName;
QueueName = queueName;
TriggerParameterMode = triggerParameterMode;
Parameter = parameter;
SessionUsage = sessionUsage;
_bindingDataContract = GetBindingDataContract(parameter);
}
public MassTransitTriggerBinding(IMassTransitListenerFactory listenerFactory,
string busName,
string queueName,
TriggerParameterMode triggerParameterMode,
SessionUsage sessionUsage,
ParameterInfo parameterInfo)
{
MassTransitListenerFactory = listenerFactory;
BusName = busName;
QueueName = queueName;
TriggerParameterMode = triggerParameterMode;
ParameterInfo = parameterInfo;
SessionUsage = sessionUsage;
_bindingDataContract = new Dictionary <string, Type>();
}
private static async Task HandleMessageAsync <TMessage>(
ConsumeContext <TMessage> context, TriggerParameterMode triggerParameterMode, ITriggeredFunctionExecutor contextExecutor)
where TMessage : class
{
var input = new TriggeredFunctionData
{
TriggerValue = ConvertToParameterType(context, triggerParameterMode),
TriggerDetails = new Dictionary <string, string>()
};
var result = await contextExecutor
.TryExecuteAsync(input, context.CancellationToken)
.ConfigureAwait(false);
if (!result.Succeeded)
{
throw result.Exception;
}
}
private static MassTransitTriggerBinding <TMessage> BuildBinding <TMessage>(
IMassTransitListenerFactory listenerFactory, string busName, string queueName, TriggerParameterMode triggerParameterMode, SessionUsage sessionUsage, ParameterInfo parameter)
where TMessage : class
{
return(new MassTransitTriggerBinding <TMessage>(listenerFactory, busName, queueName, triggerParameterMode, sessionUsage, parameter));
}
private static object ConvertToParameterType <TMessage>(ConsumeContext <TMessage> context, TriggerParameterMode triggerParameterMode) where TMessage : class
{
switch (triggerParameterMode)
{
case TriggerParameterMode.Message:
return(context.Message);
case TriggerParameterMode.ConsumeContext:
return(context);
default:
throw new ArgumentOutOfRangeException(nameof(triggerParameterMode), triggerParameterMode, null);
}
}
public IMassTransitBusListener GetListener <TMessage>(string busName, string queueName, TriggerParameterMode triggerParameterMode, SessionUsage sessionUsage, ITriggeredFunctionExecutor contextExecutor)
where TMessage : class
{
var configurationFactory = ServiceProvider.GetService <IServiceBusHostConfigurationFactory>();
if (configurationFactory == null)
{
throw new InvalidOperationException("Unable to get the host configuration factory");
}
if (!Listeners.TryGetValue(busName, out var listener))
{
var hostConfiguration = configurationFactory.GetHostConfiguration(busName);
if (hostConfiguration == null)
{
throw new InvalidOperationException($"Unable to get the host configuration for {busName}");
}
listener = new Listener(hostConfiguration);
Listeners.Add(busName, listener);
}
var triggerConfiguration = configurationFactory.GetTriggerConfiguration <TMessage>(busName)
?? new DefaultTriggerConfiguration <TMessage>();
listener.RegisterQueueConfiguration(queueName, (cfg, host) =>
{
ConfigureSessionUsage(cfg, sessionUsage);
cfg.Handler <TMessage>(
context => HandleMessageAsync(context, triggerParameterMode, contextExecutor),
triggerConfiguration.Configure);
});
return(listener);
}
