/// <inheritdoc />
public override TelemetrySpan StartSpan(string operationName, TelemetrySpan parent, SpanKind kind,
SpanCreationOptions options)
{
Logger.Log(
$"{prefix}.StartSpan({operationName}, {parent.GetType().Name}, {kind}, {options.StartTimestamp:o}, {options.LinksFactory}, {options.Links})");
return(new LoggingSpan(operationName, kind));
}
public static SpanData CreateSpanData(string name,
SpanContext parentContext,
SpanKind kind,
DateTimeOffset startTimestamp,
IEnumerable <Link> links,
IDictionary <string, object> attributes,
IEnumerable <Event> events,
Status status,
DateTimeOffset endTimestamp)
{
var processor = new Mock <SpanProcessor>();
processor.Setup(p => p.OnEnd(It.IsAny <SpanData>()));
var tracer = TracerFactory.Create(b =>
b.AddProcessorPipeline(p =>
p.AddProcessor(_ => processor.Object)))
.GetTracer(null);
SpanCreationOptions spanOptions = null;
if (links != null || attributes != null || startTimestamp != default)
{
spanOptions = new SpanCreationOptions
{
Links = links,
Attributes = attributes,
StartTimestamp = startTimestamp,
};
}
var span = tracer.StartSpan(name, parentContext, kind, spanOptions);
if (events != null)
{
foreach (var evnt in events)
{
span.AddEvent(evnt);
}
}
span.Status = status.IsValid ? status : Status.Ok;
if (endTimestamp == default)
{
span.End();
}
else
{
span.End(endTimestamp);
}
return((SpanData)processor.Invocations[0].Arguments[0]);
}
async Task ProcessItem(HelloRequest request)
{
async Task <(Activity Activity, string Message)> OpenTelemetrySayHello(DateTime start, string city)
{
var res = await RawSayHello(start, city);
var span = tracer.StartSpanFromActivity(res.Activity.OperationName, res.Activity, SpanKind.Consumer);
span.End();
return(res);
}
async Task <(Activity Activity, string Message)> ApplicationInsightsSayHello(DateTime start, string city)
{
var res = await RawSayHello(start, city);
var operation = telemetryClient.StartOperation <RequestTelemetry>(res.Activity.OperationName, res.Activity.TraceId.ToString(), res.Activity.SpanId.ToString());
telemetryClient.StopOperation(operation);
return(res);
}
async Task <(Activity Activity, string Message)> RawSayHello(DateTime start, string city)
{
var activity = new Activity("Single Say Hello").Start();
activity.AddBaggage("city", city);
await Task.Delay(10);
return(activity, $"{start}: Hello {city}");
}
Func <DateTime, string, Task <(Activity Activity, string Message)> > runner = null;
if (tracer != null)
{
runner = OpenTelemetrySayHello;
}
else if (telemetryClient != null)
{
runner = ApplicationInsightsSayHello;
}
if (runner == null)
{
return;
}
var batchStart = DateTimeOffset.UtcNow;
var tasks = new List <Task <(Activity Activity, string Message)> >();
foreach (var v in request.Cities)
{
tasks.Add(Task.Run(() => runner(request.RequestTime, v)));
}
await Task.WhenAll(tasks);
if (this.tracer != null)
{
var opts = new SpanCreationOptions
{
StartTimestamp = batchStart,
Links = tasks.Select(x => new Link(ExtractContext(x.Result.Activity))),
};
tracer.StartActiveSpan("Say Hello batch processing", SpanKind.Consumer, opts, out var batchSpan);
batchSpan.End();
}
else if (telemetryClient != null)
{
var links = tasks.Select(x => new ApplicationInsightsLink(x.Result.Activity));
using var batchOperation = telemetryClient.StartOperation <RequestTelemetry>("Say Hello batch processing");
batchOperation.Telemetry.Timestamp = batchStart;
batchOperation.Telemetry.Properties[ApplicationInsightsLink.TelemetryPropertyName] = System.Text.Json.JsonSerializer.Serialize(links);
}
}
/// <inheritdoc/>
public ISpan StartRootSpan(string operationName, SpanKind kind, SpanCreationOptions options)
{
Logger.Log($"{this.prefix}.StartRootSpan({operationName}, {kind}, {options.StartTimestamp:o}, {options.LinksFactory}, {options.Links})");
return(new LoggingSpan(operationName, kind));
}