rework list courses page to be flatten

internal/common/config/trace.go

@@ -1,6 +1,38 @@
 package config
 
-type Trace struct {
-	Endpoint   string `json:"endpoint"`
-	LicenseKey string `json:"license_key"`
+import "errors"
+
+type TraceClientType uint8
+
+const (
+	TraceClientTypeUnset TraceClientType = iota
+	TraceClientTypeHTTP
+	TraceClientTypeGRPC
+	TraceClientTypeStdout
+)
+
+func (t *TraceClientType) UnmarshalText(data []byte) error {
+	dataStr := string(data)
+	switch dataStr {
+	case "http":
+		*t = TraceClientTypeHTTP
+	case "grpc":
+		*t = TraceClientTypeGRPC
+	case "stdout":
+		*t = TraceClientTypeStdout
+	case "":
+	default:
+		return errors.New("unsupported value " + dataStr)
+	}
+
+	return nil
+}
+
+type Trace struct {
+	Endpoint  string          `json:"endpoint"`
+	APIKey    string          `json:"api_key"`
+	APIHeader string          `json:"api_header"`
+	Type      TraceClientType `json:"type"`
+
+	ShowMetrics bool `json:"show_metrics"`
 }

internal/common/decorator/logging.go

@@ -16,11 +16,10 @@ import (
 )
 
 var (
-	commandAttribute = attribute.Key("command_name")
-	queryAttribute   = attribute.Key("query_name")
-	argsAttribute    = attribute.Key("args")
+	nameAttribute = attribute.Key("cq.name")
+	argsAttribute = attribute.Key("cq.args")
 
-	apiTracer = otel.Tracer("cq")
+	apiTracer = otel.Tracer("api")
 )
 
 type commandLoggingDecorator[T any] struct {
@@ -37,9 +36,9 @@ func (c commandLoggingDecorator[T]) Handle(ctx context.Context, cmd T) (err erro
 	_ = json.NewEncoder(&argsBuilder).Encode(cmd)
 
 	var span trace.Span
-	ctx, span = apiTracer.Start(ctx, handlerName)
+	ctx, span = apiTracer.Start(ctx, "command "+handlerName)
 	span.SetAttributes(
-		commandAttribute.String(handlerName),
+		nameAttribute.String(handlerName),
 		argsAttribute.String(argsBuilder.String()),
 	)
 
@@ -73,9 +72,9 @@ func (q queryLoggingDecorator[Q, U]) Handle(ctx context.Context, query Q) (entit
 	_ = json.NewEncoder(&argsBuilder).Encode(query)
 
 	var span trace.Span
-	ctx, span = apiTracer.Start(ctx, handlerName)
+	ctx, span = apiTracer.Start(ctx, "query "+handlerName)
 	span.SetAttributes(
-		queryAttribute.String(handlerName),
+		nameAttribute.String(handlerName),
 		argsAttribute.String(argsBuilder.String()),
 	)