/**
* 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.checks;
/**
* The {@link UpgradeCheckGroup} enum is used to organize pre-upgrade checks
* into specific groups that have their own relational ordering.
* <p/>
* The order for each group is determined by a {@code float} so that new groups
* can be added in between others without the need to reorder all of the groups.
*/
public enum UpgradeCheckGroup {
/**
* Check for masters in maintenance mode and then services in maintenance
* mode.
*/
MAINTENANCE_MODE(1.0f),
/**
* Checks the repository version on the hosts.
*/
REPOSITORY_VERSION(2.0f),
/**
* Checks for NameNode HA and checks that depend on NameNode HA.
*/
NAMENODE_HA(3.0f),
/**
* Checks for the topology of service and components.
*/
TOPOLOGY(4.0f),
/**
* Checks for the state of a host or service being alive and responsive.
*/
LIVELINESS(5.0f),
/**
* Checks for the client retry properties to be set in clients that support
* this.
*/
CLIENT_RETRY_PROPERTY(6.0f),
/**
* Checks for various HA components, such as multiple metastores, are
* available.
*/
MULTIPLE_COMPONENT_WARNING(7.0f),
/**
* A general group for warning about configuration properties.
*/
CONFIGURATION_WARNING(8.0f),
/***
* Checks the component version on the hosts.
*/
COMPONENT_VERSION(9.0f),
/**
* A general group for related to Kerberos checks.
*/
KERBEROS(10.0f),
/**
* A general group for informational warning checks.
*/
INFORMATIONAL_WARNING(100.0f),
/**
* All other checks.
*/
DEFAULT(Float.MAX_VALUE);
/**
* The order of upgrade check groups.
*/
private final Float m_order;
/**
* Constructor.
*
* @param order
*/
UpgradeCheckGroup(Float order) {
m_order = order;
}
/**
* Gets the group's order.
*
* @return the order of the group.
*/
public Float getOrder() {
return m_order;
}
}