Disk.java

/*
* Claudia Project
* http://claudia.morfeo-project.org
*
* (C) Copyright 2010 Telefonica Investigacion y Desarrollo
* S.A.Unipersonal (Telefonica I+D)
*
* See CREDITS file for info about members and contributors.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the Affero GNU General Public License (AGPL) as 
* published by the Free Software Foundation; either version 3 of the License, 
* or (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the Affero GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* If you want to use this software an plan to distribute a
* proprietary application in any way, and you are not licensing and
* distributing your source code under AGPL, you probably need to
* purchase a commercial license of the product. Please contact
* claudia-support@lists.morfeo-project.org for more information.
*/
package com.telefonica.claudia.slm.deployment.hwItems;

import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.OneToOne;

import com.telefonica.claudia.slm.deployment.VEEReplica;
import com.telefonica.claudia.slm.naming.DirectoryEntry;
import com.telefonica.claudia.slm.naming.FQN;
import com.telefonica.claudia.slm.naming.ReservoirDirectory;

@Entity
public class Disk implements DirectoryEntry {
    
	@Id
	@GeneratedValue
	public long internalId;
    
	@OneToOne(cascade={CascadeType.REFRESH, CascadeType.MERGE, CascadeType.PERSIST})
    private DiskConf diskConf = null;
    
    private int freeCapacity = 0;   
    
    private String urlImage = null;
    
	private boolean readOnly = false;
	
	/**
	 * Determines whether the image of the disk should be copied to each worker host or
	 * used with a shared storage.
	 */
	private boolean cloneDisk = false;
    
    @ManyToOne
    private VEEReplica veeReplica = null;
    
    @OneToOne(cascade={CascadeType.REFRESH, CascadeType.MERGE, CascadeType.PERSIST})
    private FQN diskFQN = null;

	@SuppressWarnings("unused")
	private int id;
    
    public Disk() {}
    
    public Disk(int id, DiskConf diskConf, VEEReplica veeReplica) {
    	if(diskConf == null)
    		throw new IllegalArgumentException("Disk conf cannot be null");
    	if(veeReplica == null)
    		throw new IllegalArgumentException("VEE replica cannot be null");
        this.veeReplica = veeReplica;
        this.freeCapacity = diskConf.getCapacity();
        this.diskConf = diskConf;
        this.id = id;
    }
    
    public int getFreeCapacity() {
        return freeCapacity;
    }
    
    public void setFreeCapacity(int freeCapacity) {
        this.freeCapacity = freeCapacity;
    }          
    
    public VEEReplica getVEEReplica() {
        return veeReplica;
    }
    
    public DiskConf getDiskConf() {
    	return diskConf;
    }
    
    public FQN getFQN() {
        if(diskFQN == null)
            diskFQN = ReservoirDirectory.getInstance().buildFQN(this);
        return diskFQN;
    }
    
	public boolean readOnly() {
		return readOnly;
	}

	public void setReadOnly(boolean readOnly) {
		this.readOnly = readOnly;
	}
	
	public boolean cloneDisk() {
		return cloneDisk;
	}

	public void setCloneDisk(boolean cloneDisk) {
		this.cloneDisk = cloneDisk;
	}
	
	public String getUrlImage() {
		return this.urlImage;
	}
	
	public void setUrlImage(String url) {
		this.urlImage = url;
	}
    
    @Override
    public String toString() {
        return getFQN().toString();
    }
    
    @Override
    public int hashCode() {
        return getFQN().hashCode();
    }
    
    @Override
    public boolean equals(Object object) {
        
        if(object == null)
            return false;
        
        if(!(object instanceof Disk))
            return false;
                    
        return ((Disk)object).getFQN().equals(getFQN());
    }
}