/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ambari.server.events;
import java.util.Collection;
/**
* The {@link AlertHashInvalidationEvent} is fired when one of the
* following conditions is met and the alerts running on an agent need to be
* recalculated:
* <ul>
* <li>An alert definition changes.</li>
* <li>A host is removed from the cluster.</li>
* <li>A service host component is added or removed.</li>
* </ul>
*/
public class AlertHashInvalidationEvent extends ClusterEvent {
/**
* The hosts that need to be invalidated.
*/
private final Collection<String> m_hosts;
/**
* Constructor.
*
* @param clusterId
* the ID of the cluster that the definition is in.
* @param hosts
* the hosts that were invalidated.
*/
public AlertHashInvalidationEvent(long clusterId,
Collection<String> hosts) {
super(AmbariEventType.ALERT_DEFINITION_HASH_INVALIDATION, clusterId);
m_hosts = hosts;
}
/**
* @return the hosts
*/
public Collection<String> getHosts() {
return m_hosts;
}
}