/**
* 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.orm.dao;
import java.util.Arrays;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.TypedQuery;
import org.apache.ambari.server.orm.RequiresSession;
import org.apache.ambari.server.orm.entities.HostComponentStateEntity;
import org.apache.ambari.server.state.UpgradeState;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import com.google.inject.persist.Transactional;
@Singleton
public class HostComponentStateDAO {
@Inject
Provider<EntityManager> entityManagerProvider;
@Inject
DaoUtils daoUtils;
@Inject
HostDAO hostDAO;
@RequiresSession
public HostComponentStateEntity findById(long id) {
return entityManagerProvider.get().find(HostComponentStateEntity.class, id);
}
@RequiresSession
public List<HostComponentStateEntity> findAll() {
final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findAll", HostComponentStateEntity.class);
try {
return query.getResultList();
} catch (NoResultException ignored) {
}
return null;
}
/**
* Retrieve all of the Host Component States for the given host.
*
* @param hostName HOst name
* @return Return all of the Host Component States that match the criteria.
*/
@RequiresSession
public List<HostComponentStateEntity> findByHost(String hostName) {
final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByHost", HostComponentStateEntity.class);
query.setParameter("hostName", hostName);
return daoUtils.selectList(query);
}
/**
* Retrieve all of the Host Component States for the given service.
*
* @param serviceName Service Name
* @return Return all of the Host Component States that match the criteria.
*/
@RequiresSession
public List<HostComponentStateEntity> findByService(String serviceName) {
final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByService", HostComponentStateEntity.class);
query.setParameter("serviceName", serviceName);
return daoUtils.selectList(query);
}
/**
* Retrieve all of the Host Component States for the given service and component.
*
* @param serviceName Service Name
* @param componentName Component Name
* @return Return all of the Host Component States that match the criteria.
*/
@RequiresSession
public List<HostComponentStateEntity> findByServiceAndComponent(String serviceName, String componentName) {
final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByServiceAndComponent", HostComponentStateEntity.class);
query.setParameter("serviceName", serviceName);
query.setParameter("componentName", componentName);
return daoUtils.selectList(query);
}
/**
* Retrieve the single Host Component State for the given unique service, component, and host.
*
* @param serviceName Service Name
* @param componentName Component Name
* @param hostName Host Name
* @return Return all of the Host Component States that match the criteria.
*/
@RequiresSession
public HostComponentStateEntity findByServiceComponentAndHost(String serviceName, String componentName, String hostName) {
final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery("HostComponentStateEntity.findByServiceComponentAndHost", HostComponentStateEntity.class);
query.setParameter("serviceName", serviceName);
query.setParameter("componentName", componentName);
query.setParameter("hostName", hostName);
return daoUtils.selectSingle(query);
}
/**
* Retrieve the single Host Component State for the given unique cluster,
* service, component, and host.
*
* @param clusterId
* Cluster ID
* @param serviceName
* Service Name
* @param componentName
* Component Name
* @param hostId
* Host ID
* @return Return all of the Host Component States that match the criteria.
*/
@RequiresSession
public HostComponentStateEntity findByIndex(Long clusterId, String serviceName,
String componentName, Long hostId) {
final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery(
"HostComponentStateEntity.findByIndex", HostComponentStateEntity.class);
query.setParameter("clusterId", clusterId);
query.setParameter("serviceName", serviceName);
query.setParameter("componentName", componentName);
query.setParameter("hostId", hostId);
return daoUtils.selectSingle(query);
}
@Transactional
public void refresh(HostComponentStateEntity hostComponentStateEntity) {
entityManagerProvider.get().refresh(hostComponentStateEntity);
}
@Transactional
public void create(HostComponentStateEntity hostComponentStateEntity) {
entityManagerProvider.get().persist(hostComponentStateEntity);
}
/**
* Merges the managed entity
*
* @param hostComponentStateEntity
* @return
*/
@Transactional
public HostComponentStateEntity merge(HostComponentStateEntity hostComponentStateEntity) {
EntityManager entityManager = entityManagerProvider.get();
hostComponentStateEntity = entityManager.merge(hostComponentStateEntity);
// Flush call here causes huge performance loss on bulk update of host components
// we should consider other solutions for issues with concurrent transactions
// entityManager.flush();
return hostComponentStateEntity;
}
@Transactional
public void remove(HostComponentStateEntity hostComponentStateEntity) {
entityManagerProvider.get().remove(hostComponentStateEntity);
}
/**
* Marks hosts components to the specified version that are NOT already set or "UNKNOWN".
* Also marks all host components as not being in an upgrade state. This method
* invokes {@code clear()} on the entity manager to force entities to be refreshed.
*
* @param version the version
*/
@Transactional
public void updateVersions(String version) {
EntityManager em = entityManagerProvider.get();
// !!! first the version
StringBuilder sb = new StringBuilder("UPDATE HostComponentStateEntity hostComponent");
sb.append(" SET hostComponent.version = ?1 ");
sb.append(" WHERE hostComponent.version NOT IN ?2");
TypedQuery<Long> query = em.createQuery(sb.toString(), Long.class);
daoUtils.executeUpdate(query, version, Arrays.asList(version, "UNKNOWN"));
// !!! now the upgrade state
sb = new StringBuilder("UPDATE HostComponentStateEntity hostComponent");
sb.append(" SET hostComponent.upgradeState = ?1");
query = em.createQuery(sb.toString(), Long.class);
daoUtils.executeUpdate(query, UpgradeState.NONE);
em.clear();
}
/**
* @param serviceName
* @param componentName
* @param version
* @return a list of host components whose version that does NOT match the give version
*/
@RequiresSession
public List<HostComponentStateEntity> findByServiceAndComponentAndNotVersion(String serviceName,
String componentName, String version) {
final TypedQuery<HostComponentStateEntity> query = entityManagerProvider.get().createNamedQuery(
"HostComponentStateEntity.findByServiceAndComponentAndNotVersion", HostComponentStateEntity.class);
query.setParameter("serviceName", serviceName);
query.setParameter("componentName", componentName);
query.setParameter("version", version);
return daoUtils.selectList(query);
}
}