How do I access Telemetry Headers in Service Fabric Controller?

Question

I am able to examine Request Headers at my Service Fabric Controller entry point by specifying the following method signature:

    public async Task<IActionResult> Copy([FromHeader] TelemetryHeaders headers)

where TelemetryHeaders is defined as:

    public class TelemetryHeaders
    {
        // the following properties are my guesses as to what the headers might be named
        [FromHeader]
        [JsonProperty(PropertyName = "OperationId")]
        public string OperationId {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "ParentId ")]
        public string ParentId {get; set;}

        // the following properties are defined by the W3C standard for telemetry headers
        [FromHeader]
        [JsonProperty(PropertyName = "parent-id")]
        public string W3C_ParentId {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "trace-id")]
        public string W3C_TraceId {get; set;}

        // the following properties are defined by the HTTP Request standard for telemetry headers
        [FromHeader]
        [JsonProperty(PropertyName = "Request-Id")]
        public string HTTP_RequestId {get; set;}

        // the following properties are defined in
        // Microsoft.ApplicationInsights.ServiceFabric/RequestResponseHeaders.cs and/or
        // Microsoft.ApplicationInsights.AspNetCore/DiagnosticListeners/RequestResponseHeaders.cs
        [FromHeader]
        [JsonProperty(PropertyName = "Request-Context")]
        public string RequestContextHeader {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "appId")]
        public string RequestContextCorrelationSourceKey {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "appId")]
        public string RequestContextCorrelationTargetKey {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "roleName")]
        public string RequestContextSourceRoleNameKey {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "Microsoft.ApplicationInsights.ServiceFabric.ParentId")]
        public string ParentIdHeaderName {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "Microsoft.ApplicationInsights.ServiceFabric.CorrelationContext")]
        public string CorrelationContextHeaderName {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "appId")]
        public string RequestContextSourceKey {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "appId")]
        public string RequestContextTargetKey {get; set;} 

        [FromHeader]
        [JsonProperty(PropertyName = "Request-Id")]
        public string RequestIdHeader {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "Correlation-Context")]
        public string CorrelationContextHeader {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "traceparent")]
        public string TraceParentHeader {get; set;}

        [FromHeader]
        [JsonProperty(PropertyName = "tracestate")]
        public string TraceStateHeader {get; set;}
    }

In addition, my Startup.cs contains the following configuration code.

            var appInsightsConnection = this.Configuration["ClientGatewayOptions:ClientGateway_AppInsightsConnection"];
            var options = new ApplicationInsightsServiceOptions
            {
                ConnectionString = appInsightsConnection,
                EnablePerformanceCounterCollectionModule = true,
                EnableRequestTrackingTelemetryModule = true,
                EnableEventCounterCollectionModule = true,
                EnableDependencyTrackingTelemetryModule = true,
                EnableAppServicesHeartbeatTelemetryModule = true,
                EnableAzureInstanceMetadataTelemetryModule = true,
                EnableQuickPulseMetricStream = true,
                EnableAdaptiveSampling = true,
                EnableHeartbeat = true,
                AddAutoCollectedMetricExtractor = true,
                EnableDiagnosticsTelemetryModule = true,
            };
            options.RequestCollectionOptions.InjectResponseHeaders = true;
            options.RequestCollectionOptions.TrackExceptions = true;
            services.AddApplicationInsightsTelemetry(options);

I generate my request using Postman and specify values for OperationId and ParentId. When I hit a breakpoint at the top of the controller, I see the values I explicitly set in my Postman script, but I do not see any headers that I expect the Azure Service Fabric infrastructure to set.

In addition,

            var currentActivity = Activity.Current;

which works fine in Azure Functions, is always null in Service Fabric.

And finally,

            var context = _telemetryClient.Context;

while context is not null, all of its values are either empty or null.

So, how do I access the telemetry headers I'm looking for?

Thanks for your assistance.

How do I access Telemetry Headers in Service Fabric Controller?

0 Answers0