Add span attr "body_len"

server.go

@@ -19,6 +19,7 @@ import (
 	"github.com/google/uuid"
 
 	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 )
 
@@ -106,6 +107,8 @@ func (server *RPCServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	payload, err := readRequestBody(ctx, r.Body)
 	if err != nil {
 		payloadLen := len(payload)
+		span.SetStatus(codes.Error, "Got error from readRequestBody.")
+		span.RecordError(err)
 		server.logger.Error(err, "Error reading body", "client_ver", cltVersion, "client_platform", cltPlatform, "client_ip", cltIP, "body_len", payloadLen)
 		return
 	}
@@ -126,8 +129,13 @@ func readRequestBody(ctx context.Context, body io.Reader) ([]byte, error) {
 	defer span.End()
 
 	payload, err := ioutil.ReadAll(body)
+
+	span.SetAttributes(
+		attribute.Int("body_len", len(payload)),
+	)
+
 	if err != nil {
-		span.SetStatus(codes.Error, "Got error from ioutil.ReadAll.")
+		span.SetStatus(codes.Error, "Error reading body. Got error from ioutil.ReadAll.")
 		span.RecordError(err)
 		return payload, err
 	}