// called under "this" lock
private void mapAlertByGroupUid(Alert alert) {
AlertGroup alertGroup = alertGroupByGroupUidMapping.get(alert.getGroupUid());
boolean needsNewAlertGroup = (alertGroup != null && alertGroup.isResolved());
if (alertGroup == null || needsNewAlertGroup) {
alertGroup = new AlertGroup();
alertGroup.addAlert(alert);
alertGroupByGroupUidMapping.put(alert.getGroupUid(), alertGroup);
alertGroupList.addFirst(alertGroup);
} else {
alertGroup.addAlert(alert);
alertGroupList.remove(alertGroup);
alertGroupList.addFirst(alertGroup);
}
}
