Frontend Logging: Integrate grafana javascript agent (#50801)

Add Grafana Javascript Agent integration to Grafana

pkg/api/frontend_logging.go

@@ -46,3 +46,72 @@ func NewFrontendLogMessageHandler(store *frontendlogging.SourceMapStore) fronten
 		return response.Success("ok")
 	}
 }
+
+func GrafanaJavascriptAgentLogMessageHandler(store *frontendlogging.SourceMapStore) frontendLogMessageHandler {
+	return func(c *models.ReqContext) response.Response {
+		event := frontendlogging.FrontendGrafanaJavascriptAgentEvent{}
+		if err := web.Bind(c.Req, &event); err != nil {
+			return response.Error(http.StatusBadRequest, "bad request data", err)
+		}
+
+		// Meta object is standard across event types, adding it globally.
+
+		if event.Logs != nil && len(event.Logs) > 0 {
+			for _, logEntry := range event.Logs {
+				var ctx = frontendlogging.CtxVector{}
+				ctx = event.AddMetaToContext(ctx)
+				ctx = append(ctx, "kind", "log", "original_timestamp", logEntry.Timestamp)
+
+				for k, v := range frontendlogging.KeyValToInterfaceMap(logEntry.KeyValContext()) {
+					ctx = append(ctx, k, v)
+				}
+				switch logEntry.LogLevel {
+				case frontendlogging.LogLevelDebug, frontendlogging.LogLevelTrace:
+					{
+						ctx = append(ctx, "original_log_level", logEntry.LogLevel)
+						frontendLogger.Debug(logEntry.Message, ctx...)
+					}
+				case frontendlogging.LogLevelError:
+					{
+						ctx = append(ctx, "original_log_level", logEntry.LogLevel)
+						frontendLogger.Error(logEntry.Message, ctx...)
+					}
+				case frontendlogging.LogLevelWarning:
+					{
+						ctx = append(ctx, "original_log_level", logEntry.LogLevel)
+						frontendLogger.Warn(logEntry.Message, ctx...)
+					}
+				default:
+					{
+						ctx = append(ctx, "original_log_level", logEntry.LogLevel)
+						frontendLogger.Info(logEntry.Message, ctx...)
+					}
+				}
+			}
+		}
+
+		if event.Measurements != nil && len(event.Measurements) > 0 {
+			for _, measurementEntry := range event.Measurements {
+				for measurementName, measurementValue := range measurementEntry.Values {
+					var ctx = frontendlogging.CtxVector{}
+					ctx = event.AddMetaToContext(ctx)
+					ctx = append(ctx, measurementName, measurementValue)
+					ctx = append(ctx, "kind", "measurement", "original_timestamp", measurementEntry.Timestamp)
+					frontendLogger.Info("Measurement: "+measurementEntry.Type, ctx...)
+				}
+			}
+		}
+		if event.Exceptions != nil && len(event.Exceptions) > 0 {
+			for _, exception := range event.Exceptions {
+				var ctx = frontendlogging.CtxVector{}
+				ctx = event.AddMetaToContext(ctx)
+				exception := exception
+				transformedException := frontendlogging.TransformException(&exception, store)
+				ctx = append(ctx, "kind", "exception", "type", transformedException.Type, "value", transformedException.Value, "stacktrace", transformedException.String())
+				ctx = append(ctx, "original_timestamp", exception.Timestamp)
+				frontendLogger.Error(exception.Message(), ctx...)
+			}
+		}
+		return response.Success("ok")
+	}
+}