add db.execution_time_ms

pkg/attr/attr.go

@@ -5,6 +5,7 @@ import (
 	"os"
 	"runtime"
 	"runtime/debug"
+	"time"
 
 	"git.ma-al.com/maal-libraries/observer/pkg/level"
 	"go.opentelemetry.io/otel/attribute"
@@ -13,6 +14,8 @@ import (
 )
 
 type KeyValue = attribute.KeyValue
+type Key = attribute.Key
+type Value = attribute.Value
 
 type IntoTraceAttribute interface {
 	IntoTraceAttribute() attribute.KeyValue
@@ -54,6 +57,7 @@ const (
 	ProcessThreadsAvailableKey = attribute.Key("process.threads_available")
 	ServiceLayerKey            = attribute.Key("service.layer")
 	ServiceLayerNameKey        = attribute.Key("service.layer_name")
+	DBExecutionTimeMsKey       = attribute.Key("db.execution_time_ms")
 )
 
 type ServiceArchitectureLayer string
@@ -254,3 +258,11 @@ func ServiceLayerName(name string) attribute.KeyValue {
 		Value: attribute.StringValue(name),
 	}
 }
+
+// Take duration as an execution time of a query measured in milisecongs.
+func DBExecutionTimeMs(duration time.Duration) attribute.KeyValue {
+	return attribute.KeyValue{
+		Key:   DBExecutionTimeMsKey,
+		Value: attribute.Int64Value(duration.Milliseconds()),
+	}
+}