/**
* 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.listeners.upgrade;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.EagerSingleton;
import org.apache.ambari.server.api.services.AmbariMetaInfo;
import org.apache.ambari.server.events.StackUpgradeFinishEvent;
import org.apache.ambari.server.events.publishers.VersionEventPublisher;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Service;
import org.apache.ambari.server.state.ServiceComponent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.eventbus.AllowConcurrentEvents;
import com.google.common.eventbus.Subscribe;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
/**
* The {@link StackUpgradeFinishListener} class handles updating component info
* after stack upgrade or downgrade finish
*/
@Singleton
@EagerSingleton
public class StackUpgradeFinishListener {
/**
* Logger.
*/
private final static Logger LOG = LoggerFactory.getLogger(StackUpgradeFinishListener.class);
@Inject
Provider<AmbariMetaInfo> ambariMetaInfo;
/**
* Constructor.
*
* @param eventPublisher the publisher
*/
@Inject
public StackUpgradeFinishListener(VersionEventPublisher eventPublisher) {
eventPublisher.register(this);
}
@Subscribe
@AllowConcurrentEvents
public void onAmbariEvent(StackUpgradeFinishEvent event) {
LOG.debug("Received event {}", event);
Cluster cluster = event.getCluster();
for (Service service : cluster.getServices().values()) {
try {
//update service info due to new stack
service.updateServiceInfo();
//update component info due to new stack
for (ServiceComponent sc : service.getServiceComponents().values()) {
sc.updateComponentInfo();
}
} catch (AmbariException e) {
if (LOG.isErrorEnabled()) {
LOG.error("Caught AmbariException when update component info", e);
}
}
}
}
}