public static Scope?CreateServerSpan <TTarget>(Tracer tracer, TTarget target, IMetadata?metadata)
{
var serverHandler = target.DuckCast <ServerCallHandlerStruct>();
var method = serverHandler.Method;
Scope?scope = null;
try
{
var tags = new GrpcServerTags();
// Grpc.Core server tags are typically the root span, so use enabledWithGlobalSetting=true
GrpcCommon.AddGrpcTags(tags, tracer, method.GrpcType, name: method.Name, path: method.FullName, serviceName: method.ServiceName, analyticsEnabledWithGlobalSetting: true);
// If we have a local span (e.g. from aspnetcore) then use that as the parent
// Otherwise, use the distributed context as the parent
var spanContext = tracer.ActiveScope?.Span.Context;
if (spanContext is null)
{
spanContext = ExtractPropagatedContext(metadata);
}
var serviceName = tracer.DefaultServiceName ?? "grpc-server";
scope = tracer.StartActiveInternal(GrpcCommon.OperationName, parent: spanContext, tags: tags, serviceName: serviceName);
var span = scope.Span;
span.Type = SpanTypes.Grpc;
span.ResourceName = method.FullName;
if (metadata?.Count > 0)
{
span.SetHeaderTags(new MetadataHeadersCollection(metadata), tracer.Settings.GrpcTags, GrpcCommon.RequestMetadataTagPrefix);
}
}
catch (Exception ex)
{
Log.Error(ex, "Error creating server span for GRPC call");
}
return(scope);
}
public static Scope?CreateServerSpan <T>(Tracer tracer, T instance, HttpRequest requestMessage)
{
if (!tracer.Settings.IsIntegrationEnabled(IntegrationId.Grpc))
{
return(null);
}
Scope?scope = null;
var method = instance.DuckCast <ServerCallHandlerBaseStruct>().MethodInvoker.Method;
try
{
var tags = new GrpcServerTags();
GrpcCommon.AddGrpcTags(tags, tracer, method.GrpcType, name: method.Name, path: method.FullName, serviceName: method.ServiceName);
// If we have a local span (e.g. from aspnetcore) then use that as the parent
// Otherwise, use the distributed context as the parent
var spanContext = tracer.ActiveScope?.Span.Context;
if (spanContext is null)
{
spanContext = ExtractPropagatedContext(requestMessage);
}
var serviceName = tracer.DefaultServiceName ?? "grpc-server";
scope = tracer.StartActiveInternal(GrpcCommon.OperationName, parent: spanContext, tags: tags, serviceName: serviceName);
var span = scope.Span;
span.Type = SpanTypes.Grpc;
span.ResourceName = method.FullName;
tracer.TracerManager.Telemetry.IntegrationGeneratedSpan(IntegrationId.Grpc);
}
catch (Exception ex)
{
Log.Error(ex, "Error creating server span for GRPC call");
}
return(scope);
}
