RSDK-10723 Warn about inability to modify module logger levels for now (#5071)

Author: benjirewis

config/logging_level.go

@@ -80,6 +80,14 @@ func refreshLogLevelInLock() {
 		return
 	}
 	globalLogger.logger.Info("New log level:", newLevelZap)
+
+	// TODO(RSDK-10723): Remove this WARN log, and restart all modules at
+	// `--log-level=debug` at this point.
+	globalLogger.logger.Warn(
+		"Changes to global debug settings will not affect modular logs. " +
+			"Use 'log_level' in module config or 'log_configuration' in resource config instead",
+	)
+
 	logging.GlobalLogLevel.SetLevel(newLevelZap)
 	globalLogger.logger.SetLevel(newLevel)
 }

web/server/entrypoint.go

@@ -391,6 +391,14 @@ func (s *robotServer) configWatcher(ctx context.Context, currCfg *config.Config,
 			// This functionality is tested in `TestLogPropagation` in `local_robot_test.go`.
 			if !diff.LogEqual {
 				s.logger.Debug("Detected potential changes to log patterns; updating logger levels")
+
+				// TODO(RSDK-10723): Remove this WARN log, and mutate the config to reconfigure
+				// all appropriate modular resources at this point.
+				s.logger.Warn(
+					"Changes to 'log' field will not affect modular logs. " +
+						"Use 'log_level' in module config or 'log_configuration' in resource config instead",
+				)
+
 				config.UpdateLoggerRegistryFromConfig(s.registry, processedConfig, s.logger)
 			}