/// <summary>
/// OnMethodBegin callback
/// </summary>
/// <typeparam name="TTarget">Type of the target</typeparam>
/// <typeparam name="TKey">Type of the message key</typeparam>
/// <typeparam name="TValue">Type of the message value</typeparam>
/// <typeparam name="TActionOfDeliveryReport">Type of the delivery report</typeparam>
/// <param name="instance">Instance value, aka `this` of the instrumented method.</param>
/// <param name="topic">The topic to which the message was sent</param>
/// <param name="key">The message key value</param>
/// <param name="value">The message value</param>
/// <param name="handler">The delivery handler instance</param>
/// <returns>Calltarget state value</returns>
internal static CallTargetState OnMethodBegin <TTarget, TKey, TValue, TActionOfDeliveryReport>(TTarget instance, string topic, TKey key, TValue value, TActionOfDeliveryReport handler)
{
if (handler is null)
{
// Handled in KafkaProduceSyncIntegration
return(CallTargetState.GetDefault());
}
try
{
// The current span should be started in KafkaProduceSyncIntegration.OnMethodBegin
// The OnMethodBegin and OnMethodEnd of this integration happens between KafkaProduceSyncIntegration.OnMethodBegin
// and KafkaProduceSyncIntegration.OnMethodEnd, so the consumer span is active for the duration of this integration
var activeScope = Tracer.Instance?.InternalActiveScope;
var span = activeScope?.Span;
if (span is null)
{
Logger.Warning("Unexpected null span for Kafka Producer with delivery handler");
return(CallTargetState.GetDefault());
}
var newAction = CachedWrapperDelegate <TActionOfDeliveryReport> .CreateWrapper(handler, span);
Action <ITypedDeliveryHandlerShimAction> updateHandlerAction = inst => inst.Handler = newAction;
// store the call to update the handler variable as state
// so we update it at the _end_ of the constructor
return(new CallTargetState(scope: activeScope, state: updateHandlerAction));
}
catch (Exception ex)
{
Logger.Error(ex, "Error creating wrapped delegate for delivery report");
return(CallTargetState.GetDefault());
}
}
/// <summary>
/// OnMethodBegin callback
/// </summary>
/// <typeparam name="TTarget">Type of the target</typeparam>
/// <typeparam name="TKey">Type of the message key</typeparam>
/// <typeparam name="TValue">Type of the message value</typeparam>
/// <typeparam name="TActionOfDeliveryReport">Type of the delivery report</typeparam>
/// <param name="instance">Instance value, aka `this` of the instrumented method.</param>
/// <param name="topic">The topic to which the message was sent</param>
/// <param name="key">The message key value</param>
/// <param name="value">The message value</param>
/// <param name="handler">The delivery handler instance</param>
/// <returns>Calltarget state value</returns>
public static CallTargetState OnMethodBegin <TTarget, TKey, TValue, TActionOfDeliveryReport>(TTarget instance, string topic, TKey key, TValue value, TActionOfDeliveryReport handler)
{
if (handler is null)
{
// Handled in KafkaProduceSyncIntegration
return(CallTargetState.GetDefault());
}
try
{
var agent = Agent.Instance;
// The current span should be started in KafkaProduceSyncIntegration.OnMethodBegin
// The OnMethodBegin and OnMethodEnd of this integration happens between KafkaProduceSyncIntegration.OnMethodBegin
// and KafkaProduceSyncIntegration.OnMethodEnd, so the consumer span is active for the duration of this integration
var span = agent.Tracer.CurrentSpan;
// span may be null when the Produce call is to an ignored topic.
if (span is null)
{
return(CallTargetState.GetDefault());
}
var newAction = CachedWrapperDelegate <TActionOfDeliveryReport> .CreateWrapper(handler, span);
Action <ITypedDeliveryHandlerShimAction> updateHandlerAction = inst => inst.Handler = newAction;
// store the call to update the handler variable as state
// so we update it at the _end_ of the constructor
return(new CallTargetState(span, updateHandlerAction));
}
catch (Exception ex)
{
Agent.Instance.Logger.Error()?.LogException(ex, "Error creating wrapped delegate for delivery report");
return(CallTargetState.GetDefault());
}
}
