How to use

setSubject

method

in

org.apache.eagle.alert.engine.model.AlertStreamEvent

@Override
public synchronized AlertStreamEvent filter(AlertStreamEvent event) {
  Preconditions.checkArgument(this.policyDefinitionRepository.containsKey(event.getPolicyId()), "Unknown policyId " + event.getPolicyId());
  PolicyDefinition policyDefinition = this.policyDefinitionRepository.get(event.getPolicyId());
  StringWriter bodyWriter = new StringWriter();
  StringWriter subjectWriter = new StringWriter();
  try {
    VelocityContext alertContext = buildAlertContext(policyDefinition, event);
    Template template = engine.getTemplate(getAlertBodyTemplateName(event.getPolicyId()));
    template.merge(alertContext, bodyWriter);
    event.setBody(bodyWriter.toString());
    template = engine.getTemplate(getAlertSubjectTemplateName(event.getPolicyId()));
    template.merge(alertContext, subjectWriter);
    event.setSubject(subjectWriter.toString());
  } finally {
    try {
      bodyWriter.close();
    } catch (IOException e) {
      LOG.warn(e.getMessage(), e);
    }
    try {
      subjectWriter.close();
    } catch (IOException e) {
      LOG.warn(e.getMessage(), e);
    }
  }
  return event;
}

public static AlertStreamEvent createEvent(StreamDefinition stream, PolicyDefinition policy, Object[] data) {
  AlertStreamEvent event = new AlertStreamEvent();
  event.setPolicyId(policy.getName());
  event.setSchema(stream);
  event.setStreamId(stream.getStreamId());
  event.setTimestamp(System.currentTimeMillis());
  event.setCreatedTime(System.currentTimeMillis());
  event.setSubject("Namenode Disk Used 98%");
  event.setBody("Disk Usage of Test cluster's name node (<a href=\"#\">namenode.hostname.domain</a>) is <strong style=\"color: red\">98%</strong> at <strong>2016-11-30 12:30:45</strong>, exceeding alert threshold <strong>90</strong>%");
  event.setData(data);
  event.ensureAlertId();
  event.setSeverity(AlertSeverity.CRITICAL);
  event.setCategory("HDFS");
  event.setContext(new HashMap<String,Object>(){{
    put(AlertPublishEvent.SITE_ID_KEY,"TestCluster");
  }});
  Assert.assertNotNull(event.getAlertId());
  return event;
}