internal ActivitySourceAdapter(Sampler sampler, ActivityProcessor activityProcessor, Resource resource)
{
if (sampler == null)
{
throw new ArgumentNullException(nameof(sampler));
}
if (resource == null)
{
throw new ArgumentNullException(nameof(resource));
}
this.sampler = sampler;
if (this.sampler is AlwaysOnSampler)
{
this.getRequestedDataAction = this.RunGetRequestedDataAlwaysOnSampler;
}
else if (this.sampler is AlwaysOffSampler)
{
this.getRequestedDataAction = this.RunGetRequestedDataAlwaysOffSampler;
}
else
{
this.getRequestedDataAction = this.RunGetRequestedDataOtherSampler;
}
this.activityProcessor = activityProcessor;
this.resource = resource;
}
internal TracerProviderSdk AddProcessor(ActivityProcessor processor)
{
if (processor == null)
{
throw new ArgumentNullException(nameof(processor));
}
if (this.processor == null)
{
this.processor = processor;
}
else if (this.processor is CompositeActivityProcessor compositeProcessor)
{
compositeProcessor.AddProcessor(processor);
}
else
{
this.processor = new CompositeActivityProcessor(new[]
{
this.processor,
processor,
});
}
this.adapter?.UpdateProcessor(this.processor);
return(this);
}
/// <summary>
/// Adds processor to the provider.
/// </summary>
/// <param name="processor">Activity processor to add.</param>
/// <returns>Returns <see cref="TracerProviderBuilder"/> for chaining.</returns>
public TracerProviderBuilder AddProcessor(ActivityProcessor processor)
{
if (processor == null)
{
throw new ArgumentNullException(nameof(processor));
}
this.processors.Add(processor);
return(this);
}
public CompositeActivityProcessor AddProcessor(ActivityProcessor processor)
{
if (processor == null)
{
throw new ArgumentNullException(nameof(processor));
}
var node = new DoublyLinkedListNode <ActivityProcessor>(processor)
{
Previous = this.tail,
};
this.tail.Next = node;
this.tail = node;
return(this);
}
internal ActivityProcessor Build()
{
this.Processors = new List <ActivityProcessor>();
ActivityProcessor exportingProcessor = null;
// build or create default exporting processor
if (this.lastProcessorFactory != null)
{
exportingProcessor = this.lastProcessorFactory.Invoke(this.Exporter);
this.Processors.Add(exportingProcessor);
}
else if (this.Exporter != null)
{
// TODO: Make this BatchingActivityProcessor once its available.
exportingProcessor = new SimpleActivityProcessor(this.Exporter);
this.Processors.Add(exportingProcessor);
}
if (this.processorChain == null)
{
// if there is no chain, return exporting processor.
if (exportingProcessor == null)
{
exportingProcessor = new NoopActivityProcessor();
this.Processors.Add(exportingProcessor);
}
return(exportingProcessor);
}
var next = exportingProcessor;
// build chain from the end to the beginning
for (int i = this.processorChain.Count - 1; i >= 0; i--)
{
next = this.processorChain[i].Invoke(next);
this.Processors.Add(next);
}
// return the last processor in the chain - it will be called first
return(this.Processors[this.Processors.Count - 1]);
}
public static TracerProvider AddProcessor(this TracerProvider provider, ActivityProcessor processor)
{
if (provider == null)
{
throw new ArgumentNullException(nameof(provider));
}
if (processor == null)
{
throw new ArgumentNullException(nameof(processor));
}
var trait = provider as TracerProviderSdk;
if (trait == null)
{
throw new ArgumentException($"{nameof(provider)} is not an instance of TracerProviderSdk");
}
return(trait.AddProcessor(processor));
}
internal void UpdateProcessor(ActivityProcessor processor)
{
this.activityProcessor = processor;
}
internal ActivitySourceAdapter(Sampler sampler, ActivityProcessor activityProcessor, Resource resource)
{
this.sampler = sampler;
this.activityProcessor = activityProcessor;
this.resource = resource;
}
/// <summary>
/// Creates TracerProvider with the configuration provided.
/// This sets up listeners for all configured ActivitySources and
/// sends activities to the pipeline of Sampler, Processor and Exporter.
/// </summary>
/// <param name="configureTracerProviderBuilder">Action to configure TracerProviderBuilder.</param>
/// <returns>TracerProvider instance, which must be disposed upon shutdown.</returns>
public static TracerProvider CreateTracerProvider(Action <TracerProviderBuilder> configureTracerProviderBuilder)
{
var tracerProviderBuilder = new TracerProviderBuilder();
configureTracerProviderBuilder?.Invoke(tracerProviderBuilder);
var tracerProviderSdk = new TracerProviderSdk();
Sampler sampler = tracerProviderBuilder.Sampler ?? new AlwaysOnSampler();
ActivityProcessor activityProcessor;
if (tracerProviderBuilder.ProcessingPipelines == null || !tracerProviderBuilder.ProcessingPipelines.Any())
{
// if there are no pipelines are configured, use noop processor
activityProcessor = new NoopActivityProcessor();
}
else if (tracerProviderBuilder.ProcessingPipelines.Count == 1)
{
// if there is only one pipeline - use it's outer processor as a
// single processor on the tracerSdk.
var processorFactory = tracerProviderBuilder.ProcessingPipelines[0];
activityProcessor = processorFactory.Build();
}
else
{
// if there are more pipelines, use processor that will broadcast to all pipelines
var processors = new ActivityProcessor[tracerProviderBuilder.ProcessingPipelines.Count];
for (int i = 0; i < tracerProviderBuilder.ProcessingPipelines.Count; i++)
{
processors[i] = tracerProviderBuilder.ProcessingPipelines[i].Build();
}
activityProcessor = new BroadcastActivityProcessor(processors);
}
tracerProviderSdk.Resource = tracerProviderBuilder.Resource;
var activitySource = new ActivitySourceAdapter(sampler, activityProcessor, tracerProviderSdk.Resource);
if (tracerProviderBuilder.InstrumentationFactories != null)
{
foreach (var instrumentation in tracerProviderBuilder.InstrumentationFactories)
{
tracerProviderSdk.Instrumentations.Add(instrumentation.Factory(activitySource));
}
}
// This is what subscribes to Activities.
// Think of this as the replacement for DiagnosticListener.AllListeners.Subscribe(onNext => diagnosticListener.Subscribe(..));
tracerProviderSdk.ActivityListener = new ActivityListener
{
// Callback when Activity is started.
ActivityStarted = (activity) =>
{
if (activity.IsAllDataRequested)
{
activity.SetResource(tracerProviderSdk.Resource);
}
activityProcessor.OnStart(activity);
},
// Callback when Activity is stopped.
ActivityStopped = activityProcessor.OnEnd,
// Function which takes ActivitySource and returns true/false to indicate if it should be subscribed to
// or not
ShouldListenTo = (activitySource) => tracerProviderBuilder.ActivitySourceNames?.Contains(activitySource.Name.ToUpperInvariant()) ?? false,
// The following parameter is not used now.
GetRequestedDataUsingParentId = (ref ActivityCreationOptions <string> options) => ActivityDataRequest.AllData,
// This delegate informs ActivitySource about sampling decision when the parent context is an ActivityContext.
GetRequestedDataUsingContext = (ref ActivityCreationOptions <ActivityContext> options) => ComputeActivityDataRequest(options, sampler),
};
ActivitySource.AddActivityListener(tracerProviderSdk.ActivityListener);
tracerProviderSdk.ActivityProcessor = activityProcessor;
return(tracerProviderSdk);
}
internal ActivitySourceAdapter(ActivitySampler activitySampler, ActivityProcessor activityProcessor)
{
this.activitySampler = activitySampler;
this.activityProcessor = activityProcessor;
}