private static Sampler GetSampler(OpenTelemetryOptions options)
{
return(options.Sampler switch
{
"const" => new AlwaysSampleSampler(),
_ => new AlwaysSampleSampler(),
});
public static IServiceCollection AddCustomOpenTelemetry(this IServiceCollection services)
{
if (_initialized)
{
return(services);
}
_initialized = true;
var resolver = services.BuildServiceProvider();
using var scope = resolver.CreateScope();
var config = scope.ServiceProvider.GetService <IConfiguration>();
var openTelemetryOptions = new OpenTelemetryOptions();
config.Bind(OpenTelemetrySectionName, openTelemetryOptions);
services.AddSingleton(openTelemetryOptions);
services.AddOpenTelemetry((serviceProvider, builder) =>
{
builder.SetSampler(GetSampler(openTelemetryOptions));
builder.UseZipkin(o =>
{
o.ServiceName = openTelemetryOptions.ServiceName;
o.Endpoint = new System.Uri(openTelemetryOptions.ZipkinEndpoint);
});
builder.AddRequestCollector();
builder.AddDependencyCollector();
});
return(services);
}