protected UserManager userManager;
@Override
public void alarm(String historyId, String title, String content,ChainException chain)
throws Exception {
JobHistory history=jobHistoryManager.findJobHistory(historyId);
TriggerType type=history.getTriggerType();
String jobId=history.getJobId();
List<String> users=new ArrayList<String>();
if(type==TriggerType.SCHEDULE){
users=followManager.findActualJobFollowers(jobId);
}else{