public override async ValueTask Invoke(StreamingHubContext context, Func <StreamingHubContext, ValueTask> next)
{
// https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/semantic_conventions/rpc.md#grpc
using var activity = source.StartActivity($"{context.ServiceContext.MethodType}:/{context.Path}", ActivityKind.Server);
// activity may be null if "no one is listening" or "all listener returns ActivitySamplingResult.None in Sample or SampleUsingParentId callback".
if (activity == null)
{
await next(context);
return;
}
// add trace context to service context. it allows user to add their span directly to this hub
context.SetTraceContext(activity.Context);
try
{
// request
activity.SetTag("grpc.method", context.ServiceContext.MethodType.ToString());
activity.SetTag("rpc.system", "grpc");
activity.SetTag("rpc.service", context.ServiceContext.ServiceType.Name);
activity.SetTag("rpc.method", $"/{context.Path}");
activity.SetTag("net.peer.ip", context.ServiceContext.CallContext.Peer);
activity.SetTag("http.host", context.ServiceContext.CallContext.Host);
activity.SetTag("http.useragent", context.ServiceContext.CallContext.RequestHeaders.GetValue("user-agent"));
activity.SetTag("message.type", "RECIEVED");
activity.SetTag("message.id", context.ServiceContext.ContextId.ToString());
activity.SetTag("message.uncompressed_size", context.Request.Length.ToString());
activity.SetTag("magiconion.peer.ip", context.ServiceContext.CallContext.Peer);
activity.SetTag("magiconion.auth.enabled", (!string.IsNullOrEmpty(context.ServiceContext.CallContext.AuthContext.PeerIdentityPropertyName)).ToString());
activity.SetTag("magiconion.auth.peer.authenticated", context.ServiceContext.CallContext.AuthContext.IsPeerAuthenticated.ToString());
await next(context);
// response
activity.SetTag("grpc.status_code", ((long)context.ServiceContext.CallContext.Status.StatusCode).ToString());
activity.SetStatus(OpenTelemetryHelper.GrpcToOpenTelemetryStatus(context.ServiceContext.CallContext.Status.StatusCode));
}
catch (Exception ex)
{
activity.SetTag("exception", ex.ToString());
activity.SetTag("grpc.status_code", ((long)context.ServiceContext.CallContext.Status.StatusCode).ToString());
activity.SetTag("grpc.status_detail", context.ServiceContext.CallContext.Status.Detail);
activity.SetStatus(OpenTelemetryHelper.GrpcToOpenTelemetryStatus(context.ServiceContext.CallContext.Status.StatusCode));
throw;
}
}
public override async ValueTask Invoke(StreamingHubContext context, Func <StreamingHubContext, ValueTask> next)
{
// https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/semantic_conventions/rpc.md#grpc
using var activity = source.StartActivity($"{context.ServiceContext.MethodType}:/{context.Path}", ActivityKind.Server);
// add trace context to service context. it allows user to add their span directly to this hub
context.SetTraceContext(activity.Context);
try
{
activity.SetTag("grpc.method", context.ServiceContext.MethodType.ToString());
activity.SetTag("rpc.system", "grpc");
activity.SetTag("rpc.service", context.ServiceContext.ServiceType.Name);
activity.SetTag("rpc.method", $"/{context.Path}");
// todo: context.CallContext.Peer/Host format is https://github.com/grpc/grpc/blob/master/doc/naming.md and not uri standard.
activity.SetTag("net.peer.ip", context.ServiceContext.CallContext.Peer);
activity.SetTag("net.host.name", context.ServiceContext.CallContext.Host);
activity.SetTag("message.type", "RECIEVED");
activity.SetTag("message.id", context.ServiceContext.ContextId.ToString());
activity.SetTag("message.uncompressed_size", context.Request.Length.ToString());
// todo: net.peer.name not report on tracer. use custom tag
activity.SetTag("magiconion.peer.ip", context.ServiceContext.CallContext.Peer);
activity.SetTag("magiconion.auth.enabled", (!string.IsNullOrEmpty(context.ServiceContext.CallContext.AuthContext.PeerIdentityPropertyName)).ToString());
activity.SetTag("magiconion.auth.peer.authenticated", context.ServiceContext.CallContext.AuthContext.IsPeerAuthenticated.ToString());
await next(context);
activity.SetTag("grpc.status_code", ((long)context.ServiceContext.CallContext.Status.StatusCode).ToString());
activity.SetStatus(OpenTelemetrygRpcStatusHelper.ConvertStatus(context.ServiceContext.CallContext.Status.StatusCode));
}
catch (Exception ex)
{
activity.SetTag("exception", ex.ToString());
activity.SetTag("grpc.status_code", ((long)context.ServiceContext.CallContext.Status.StatusCode).ToString());
activity.SetTag("grpc.status_detail", context.ServiceContext.CallContext.Status.Detail);
activity.SetStatus(OpenTelemetrygRpcStatusHelper.ConvertStatus(context.ServiceContext.CallContext.Status.StatusCode));
throw;
}
}