/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.core.domain.cloud;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import org.rhq.core.domain.resource.Agent;
/**
* An object to logically group {@link Server}s and {@link Agent}s
* together so that the high-availability distribution algorithm
* repartitions the {@link Agent}s with tendencies to connect and
* fail over to {@link Server}s in the same {@link AffinityGroup}.
*
* @author Joseph Marques
*
*/
@Entity(name = "AffinityGroup")
@NamedQueries //
( { @NamedQuery(name = AffinityGroup.QUERY_FIND_ALL, query = "SELECT ag FROM AffinityGroup ag"),
@NamedQuery(name = AffinityGroup.QUERY_FIND_BY_NAME, query = "" //
+ "SELECT ag " //
+ " FROM AffinityGroup ag " //
+ " WHERE UPPER(ag.name) = :name"), //
@NamedQuery(name = AffinityGroup.QUERY_FIND_ALL_COMPOSITES, query = "" //
+ "SELECT NEW org.rhq.core.domain.cloud.composite.AffinityGroupCountComposite " //
+ " ( " //
+ " ag, " //
+ " (SELECT COUNT(a) FROM Agent a WHERE a.affinityGroup = ag), " //
+ " (SELECT COUNT(s) FROM Server s WHERE s.affinityGroup = ag) " //
+ " ) " //
+ " FROM AffinityGroup ag "), //
@NamedQuery(name = AffinityGroup.QUERY_UPDATE_REMOVE_AGENTS, query = "" //
+ "UPDATE Agent a " //
+ " SET a.affinityGroup = NULL " //
+ " WHERE a.affinityGroup.id IN ( :affinityGroupIds ) "), //
@NamedQuery(name = AffinityGroup.QUERY_UPDATE_REMOVE_SERVERS, query = "" //
+ "UPDATE Server s " //
+ " SET s.affinityGroup = NULL " //
+ " WHERE s.affinityGroup.id IN ( :affinityGroupIds ) "), //
@NamedQuery(name = AffinityGroup.QUERY_UPDATE_ADD_AGENTS, query = "" //
+ "UPDATE Agent a " //
+ " SET a.affinityGroup = :affinityGroup " //
+ " WHERE a.id IN ( :agentIds ) "), //
@NamedQuery(name = AffinityGroup.QUERY_UPDATE_ADD_SERVERS, query = "" //
+ "UPDATE Server s " //
+ " SET s.affinityGroup = :affinityGroup " //
+ " WHERE s.id IN ( :serverIds ) "), //
@NamedQuery(name = AffinityGroup.QUERY_UPDATE_REMOVE_SPECIFIC_AGENTS, query = "" //
+ "UPDATE Agent a " //
+ " SET a.affinityGroup = NULL " //
+ " WHERE a.id IN ( :agentIds ) "), //
@NamedQuery(name = AffinityGroup.QUERY_UPDATE_REMOVE_SPECIFIC_SERVERS, query = "" //
+ "UPDATE Server s " //
+ " SET s.affinityGroup = NULL " //
+ " WHERE s.id IN ( :serverIds ) "), //
@NamedQuery(name = AffinityGroup.QUERY_DELETE_BY_IDS, query = "" //
+ "DELETE FROM AffinityGroup ag " //
+ " WHERE ag.id IN ( :affinityGroupIds ) ") //
})
@SequenceGenerator(allocationSize = org.rhq.core.domain.util.Constants.ALLOCATION_SIZE, name = "RHQ_AFFINITY_GROUP_ID_SEQ", sequenceName = "RHQ_AFFINITY_GROUP_ID_SEQ")
@Table(name = "RHQ_AFFINITY_GROUP")
public class AffinityGroup implements Serializable {
public static final long serialVersionUID = 1L;
public static final String QUERY_FIND_ALL = "AffinityGroup.findAll";
public static final String QUERY_FIND_BY_NAME = "AffinityGroup.findByName";
public static final String QUERY_FIND_ALL_COMPOSITES = "AffinityGroup.findAllComposites";
public static final String QUERY_UPDATE_REMOVE_AGENTS = "AffinityGroup.updateRemoveAgents";
public static final String QUERY_UPDATE_REMOVE_SERVERS = "AffinityGroup.updateRemoveServers";
public static final String QUERY_UPDATE_ADD_AGENTS = "AffinityGroup.updateAddAgents";
public static final String QUERY_UPDATE_ADD_SERVERS = "AffinityGroup.updateAddServers";
public static final String QUERY_UPDATE_REMOVE_SPECIFIC_AGENTS = "AffinityGroup.updateRemoveSpecificAgents";
public static final String QUERY_UPDATE_REMOVE_SPECIFIC_SERVERS = "AffinityGroup.updateRemoveSpecificServers";
public static final String QUERY_DELETE_BY_IDS = "AffinityGroup.deleteByIds";
@Column(name = "ID", nullable = false)
@GeneratedValue(strategy = GenerationType.AUTO, generator = "RHQ_AFFINITY_GROUP_ID_SEQ")
@Id
private int id;
@Column(name = "NAME", nullable = false)
private String name;
@OneToMany(mappedBy = "affinityGroup", fetch = FetchType.LAZY)
private List<Server> servers = new ArrayList<Server>();
@OneToMany(mappedBy = "affinityGroup", fetch = FetchType.LAZY)
private List<Agent> agents = new ArrayList<Agent>();
// required for JPA
protected AffinityGroup() {
}
public AffinityGroup(String name) {
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Server> getServers() {
return servers;
}
public void setServers(List<Server> servers) {
this.servers = servers;
}
public List<Agent> getAgents() {
return agents;
}
public void setAgents(List<Agent> agents) {
this.agents = agents;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || !(obj instanceof AffinityGroup)) {
return false;
}
final AffinityGroup other = (AffinityGroup) obj;
if (name == null) {
if (other.name != null) {
return false;
}
} else if (!name.equals(other.name)) {
return false;
}
return true;
}
}