How to use

getSubject

method

in

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

if (event.getCategory() != null) {
  email.setSubject(String.format("[Eagle Alert][%s][%s] %s",
    event.getSeverity(), event.getCategory(), event.getSubject() != null ? event.getSubject() : subject));
} else {
  email.setSubject(String.format("[Eagle Alert][%s] %s",
    event.getSeverity(), event.getSubject() != null ? event.getSubject() : subject));

alertContext.put(PublishConstants.ALERT_EMAIL_SUBJECT, event.getSubject());
alertContext.put(PublishConstants.ALERT_EMAIL_BODY, getAlertBody(event));
alertContext.put(PublishConstants.ALERT_EMAIL_POLICY_ID, event.getPolicyId());

public AlertEntity convertAlertEvent(AlertStreamEvent event) {
  Preconditions.checkNotNull(event.getAlertId(), "alertId is not initialized before being published: " + event.toString());
  AlertEntity alertEvent = new AlertEntity();
  Map<String, String> tags = new HashMap<>();
  tags.put(POLICY_ID_KEY, event.getPolicyId());
  tags.put(ALERT_ID_KEY, event.getAlertId());
  tags.put(ALERT_CATEGORY, event.getCategory());
  tags.put(ALERT_SEVERITY, event.getSeverity().toString());
  String host = event.getDataMap().getOrDefault("host", "null").toString();
  String hostname = event.getDataMap().getOrDefault("hostname", "null").toString();
  if (host != "null") {
    tags.put(ALERT_HOST, host);
  } else {
    tags.put(ALERT_HOST, hostname);
  }
  if (event.getContext() != null && !event.getContext().isEmpty()) {
    tags.put(SITE_ID_KEY, event.getContext().get(SITE_ID_KEY).toString());
    alertEvent.setPolicyValue(event.getContext().get(POLICY_VALUE_KEY).toString());
    alertEvent.setAppIds((List<String>) event.getContext().get(APP_IDS_KEY));
  }
  alertEvent.setTimestamp(event.getCreatedTime());
  alertEvent.setAlertData(event.getDataMap());
  alertEvent.setAlertSubject(event.getSubject());
  alertEvent.setAlertBody(event.getBody());
  alertEvent.setTags(tags);
  return alertEvent;
}

public static AlertPublishEvent createAlertPublishEvent(AlertStreamEvent event) {
  Preconditions.checkNotNull(event.getAlertId(), "alertId is not initialized before being published: " + event.toString());
  AlertPublishEvent alertEvent = new AlertPublishEvent();
  alertEvent.setAlertId(event.getAlertId());
  alertEvent.setPolicyId(event.getPolicyId());
  alertEvent.setAlertTimestamp(event.getCreatedTime());
  alertEvent.setStreamId(event.getStreamId());
  alertEvent.setCreatedBy(event.getCreatedBy());
  alertEvent.setCreatedTime(event.getCreatedTime());
  alertEvent.setAlertSubject(event.getSubject());
  alertEvent.setAlertBody(event.getBody());
  if (event.getContext() != null && !event.getContext().isEmpty()) {
    if (event.getContext().containsKey(SITE_ID_KEY)) {
      alertEvent.setSiteId(event.getContext().get(SITE_ID_KEY).toString());
    }
    if (event.getContext().containsKey(POLICY_VALUE_KEY)) {
      alertEvent.setPolicyValue(event.getContext().get(POLICY_VALUE_KEY).toString());
    }
    if (event.getContext().containsKey(APP_IDS_KEY)) {
      alertEvent.setAppIds((List<String>) event.getContext().get(APP_IDS_KEY));
    }
  }
  alertEvent.setAlertData(event.getDataMap());
  return alertEvent;
}

@Test
public void testVelocityAlertTemplateWithoutTemplate () {
  AlertTemplateEngine templateEngine = new VelocityAlertTemplateEngine();
  templateEngine.init(ConfigFactory.load());
  templateEngine.register(mockPolicyWithoutTemplate("testPolicyName"));
  AlertStreamEvent event = templateEngine.filter(mockAlertEvent("testPolicyName"));
  Assert.assertEquals("Message: Alert {site=test, stream=ALERT_STREAM,timestamp=2016-11-30 07:31:15,923," +
    "data={site=test_cluster, role=hadoop, metric=cpu.usage, host=localhost, value=0.98}, " +
    "policyId=testPolicyName, createdBy=junit, metaVersion=SAMPLE_META_VERSION} " +
    "(Auto-generated alert message as template not defined in policy testPolicyName)", event.getBody());
  Assert.assertEquals("testPolicyName", event.getSubject());
}

@Test
public void testVelocityAlertTemplate () {
  AlertTemplateEngine templateEngine = new VelocityAlertTemplateEngine();
  templateEngine.init(ConfigFactory.load());
  templateEngine.register(mockPolicy("testPolicy"));
  AlertStreamEvent event = templateEngine.filter(mockAlertEvent("testPolicy"));
  Assert.assertEquals("Alert (2016-11-30 07:31:15 UTC): cpu usage on hadoop of cluster test_cluster at localhost is 0.98, " +
    "exceeding thread hold: 90%. (policy: testPolicy, description: Policy for monitoring cpu usage > 90%), " +
    "definition: from HADOOP_JMX_METRIC_STREAM[site == \"test_cluster\" and metric == \"cpu.usage\" and value > 0.9] " +
    "select site, metric, host, role, value insert into capacityUsageAlert", event.getBody());
  Assert.assertEquals("Name Node Usage Exceed 90%, reach 98.0% now", event.getSubject());
}