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Add Cron and Servicebus Trigger Handlers, Fix some issues with the Http Trigger Handler, and downgrade the azure function packages as there's an issue with current versions around the Opentelemetry context (see Azure/azure-functions-dotnet-worker#2543)
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Source/Morris.Azure.Functions.OpenTelemetry/CronTriggerHandler.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| using Microsoft.Azure.Functions.Worker; | ||
| using Microsoft.Azure.Functions.Worker.Middleware; | ||
| using OpenTelemetry.Trace; | ||
| using System.Diagnostics; | ||
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| namespace Morris.Azure.Functions.OpenTelemetry; | ||
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| public class CronTriggerHandler : ITriggerHandler | ||
| { | ||
| public async Task<Activity?> HandleAsync(ActivitySource activitySource, TriggerParameterInfo triggerParameterInfo, FunctionContext context, FunctionExecutionDelegate next) | ||
| { | ||
| string activityName = context.FunctionDefinition.Name; | ||
| Activity? activity = activitySource.StartActivity(name: activityName, kind: ActivityKind.Server); | ||
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| var schedule = ((TimerTriggerAttribute)triggerParameterInfo.BindingAttribute).Schedule; | ||
| activity?.SetTag(TraceSemanticConventions.AttributeFaasCron, schedule); | ||
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| await next(context); | ||
| return activity; | ||
| } | ||
| } |
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62 changes: 62 additions & 0 deletions
62
Source/Morris.Azure.Functions.OpenTelemetry/ServiceBusTriggerHandler.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| using Microsoft.Azure.Functions.Worker; | ||
| using Microsoft.Azure.Functions.Worker.Middleware; | ||
| using OpenTelemetry; | ||
| using OpenTelemetry.Context.Propagation; | ||
| using OpenTelemetry.Trace; | ||
| using System.Diagnostics; | ||
| using System.Text.Json; | ||
| using System.Text.Json.Serialization; | ||
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| namespace Morris.Azure.Functions.OpenTelemetry; | ||
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| public class ServiceBusTriggerHandler : ITriggerHandler | ||
| { | ||
| public async Task<Activity?> HandleAsync(ActivitySource activitySource, TriggerParameterInfo triggerParameterInfo, FunctionContext context, FunctionExecutionDelegate next) | ||
| { | ||
| string? applicationPropertiesJson = context.BindingContext.BindingData["ApplicationProperties"]?.ToString(); | ||
| ApplicationProperties? applicationProperties = null; | ||
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| if (applicationPropertiesJson != null) | ||
| { | ||
| applicationProperties = JsonSerializer.Deserialize<ApplicationProperties>(applicationPropertiesJson); | ||
| } | ||
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| ActivityContext currentActivityContext = Activity.Current?.Context ?? new ActivityContext(); | ||
| var propagationContext = new PropagationContext(currentActivityContext, Baggage.Current); | ||
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| PropagationContext newPropagationContext = Propagators | ||
| .DefaultTextMapPropagator | ||
| .Extract(context: propagationContext, carrier: applicationProperties, getter: ExtractContextFromApplicationProperties); | ||
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| string activityName = context.FunctionDefinition.Name; | ||
| Activity? activity = null; | ||
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| if (newPropagationContext.ActivityContext.TraceFlags == ActivityTraceFlags.Recorded) | ||
| { | ||
| activity = activitySource.StartActivity(name: activityName, kind: ActivityKind.Server, newPropagationContext.ActivityContext); | ||
| } | ||
| else | ||
| { | ||
| activity = activitySource.StartActivity(name: activityName, kind: ActivityKind.Server); | ||
| } | ||
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| activity?.SetTag("messaging.system", "servicebus"); | ||
| activity?.SetTag("messaging.operation.type", "receive"); | ||
| activity?.SetTag("messaging.servicebus.message.enqueued_time", context.BindingContext.BindingData["EnqueuedTimeUtc"]?.ToString()); | ||
| activity?.SetTag("messaging.message.id", context.BindingContext.BindingData["MessageId"]?.ToString()); | ||
| activity?.SetTag("messaging.message.sequence_number", context.BindingContext.BindingData["SequenceNumber"]?.ToString()); | ||
| activity?.SetTag("messaging.servicebus.message.delivery_count", context.BindingContext.BindingData["DeliveryCount"]?.ToString()); | ||
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| await next(context); | ||
| return activity; | ||
| } | ||
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| internal class ApplicationProperties() | ||
| { | ||
| [JsonPropertyName("Diagnostic-Id")] | ||
| public string? DiagnosticId { get; set; } | ||
| } | ||
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| internal static IEnumerable<string> ExtractContextFromApplicationProperties(ApplicationProperties? applicationProperties, string key) => | ||
| key == "traceparent" && applicationProperties?.DiagnosticId != null ? new List<string>() { applicationProperties.DiagnosticId } : []; | ||
| } |