/*************************************************************************
* Copyright 2009-2012 Eucalyptus Systems, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3 of the License.
*
* 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 GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
* additional information or have any questions.
*
* This file may incorporate work covered under the following copyright
* and permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* POSSIBILITY OF SUCH DAMAGE. USERS OF THIS SOFTWARE ACKNOWLEDGE
* THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE LICENSED MATERIAL,
* COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS SOFTWARE,
* AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA,
* SANTA BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY,
* WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION,
* REPLACEMENT OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO
* IDENTIFIED, OR WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT
* NEEDED TO COMPLY WITH ANY SUCH LICENSES OR RIGHTS.
************************************************************************/
package com.eucalyptus.compute.common.internal.vm;
import java.util.Date;
import java.util.NoSuchElementException;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.CollectionTable;
import javax.persistence.ElementCollection;
import javax.persistence.Embeddable;
import javax.persistence.OneToMany;
import javax.persistence.Transient;
import org.apache.log4j.Logger;
import org.hibernate.annotations.Parent;
import com.eucalyptus.entities.Entities;
import com.eucalyptus.util.Exceptions;
import com.eucalyptus.compute.common.internal.vm.VmVolumeAttachment.AttachmentState;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
@Embeddable
public class VmVolumeState {
@Transient
private static Logger LOG = Logger.getLogger( VmVolumeState.class );
@Parent
private VmInstance vmInstance;
@OneToMany( mappedBy = "vmInstance", orphanRemoval = true, cascade = CascadeType.ALL )
private final Set<VmStandardVolumeAttachment> attachments = Sets.newHashSet( );
VmVolumeState( ) {
super( );
this.vmInstance = null;
}
VmVolumeState( VmInstance vmInstance ) {
super( );
this.vmInstance = vmInstance;
}
private VmVolumeAttachment resolveVolumeId( final String volumeId ) throws NoSuchElementException {
final VmVolumeAttachment v = Iterables.find( this.attachments, VmVolumeAttachment.volumeIdFilter( volumeId ) );
if ( v == null ) {
throw new NoSuchElementException( "Failed to find volume attachment for instance " + this.getVmInstance( ).getInstanceId( ) + " and volume " + volumeId );
} else {
return v;
}
}
public VmVolumeAttachment removeVolumeAttachment( final String volumeId ) throws NoSuchElementException {
final VmVolumeAttachment v = Iterables.find( this.attachments, VmVolumeAttachment.volumeIdFilter( volumeId ) );
if ( v == null ) {
throw new NoSuchElementException( "Failed to find volume attachment for instance " + this.getVmInstance( ).getInstanceId( ) + " and volume " + volumeId );
} else {
this.attachments.remove( v );
return v;
}
}
public void updateVolumeAttachment( final String volumeId, final AttachmentState state ) throws NoSuchElementException {
final VmVolumeAttachment v = this.resolveVolumeId( volumeId );
v.setStatus( state.name( ) );
}
public VmVolumeAttachment lookupVolumeAttachment( final String volumeId ) throws NoSuchElementException {
return this.resolveVolumeId( volumeId );
}
public <T> Iterable<T> transformVolumeAttachments( final Function<? super VmVolumeAttachment, T> function ) throws NoSuchElementException {
return Iterables.transform( this.attachments, function );
}
public boolean eachVolumeAttachment( final Predicate<VmVolumeAttachment> pred ) throws NoSuchElementException {
return Iterables.all( this.attachments, pred );
}
public void addVolumeAttachment( final VmStandardVolumeAttachment volume ) {
final String volumeId = volume.getVolumeId( );
volume.setStatus( AttachmentState.attaching.name( ) );
volume.setAttachTime( volume.getAttachTime( ) != null ? volume.getAttachTime( ) : new Date( ) );
volume.setInstanceId( this.getVmInstance( ).getInstanceId( ) );
if ( !this.attachments.add( volume ) ) {
Exceptions.trace( "Failed to add volume to attachment set: " + volume );
}
}
public enum VmVolumeAttachmentName implements Function<VmVolumeAttachment, String> {
INSTANCE;
public String apply( final VmVolumeAttachment input ) {
return input.getVolumeId( );
}
}
public enum VmVolumeAttachmentStateInfo implements Function<VmVolumeAttachment, String> {
INSTANCE;
public String apply( final VmVolumeAttachment input ) {
return input.getVolumeId( ) + ":" + input.getAttachmentState( ).stateFlag( );
}
}
private VmInstance getVmInstance( ) {
return this.vmInstance;
}
public VmVolumeAttachment lookupVolumeAttachmentByDevice( String volumeDevice ) {
return Iterables.find( this.attachments, VmVolumeAttachment.volumeDeviceFilter( volumeDevice ) );
}
@Override
public String toString( ) {
StringBuilder builder = new StringBuilder( );
builder.append( "VmVolumeState:" );
if ( Entities.isReadable( this.attachments ) ) builder.append( "attachments=" ).append( this.attachments );
return builder.toString( );
}
public Set<VmStandardVolumeAttachment> getAttachments( ) {
return this.attachments;
}
private void setVmInstance( VmInstance vmInstance ) {
this.vmInstance = vmInstance;
}
@Override
public int hashCode( ) {
final int prime = 31;
int result = 1;
result = prime * result + ( ( this.vmInstance == null )
? 0
: this.vmInstance.hashCode( ) );
return result;
}
@Override
public boolean equals( Object obj ) {
if ( this == obj ) {
return true;
}
if ( obj == null ) {
return false;
}
if ( getClass( ) != obj.getClass( ) ) {
return false;
}
VmVolumeState other = ( VmVolumeState ) obj;
if ( this.vmInstance == null ) {
if ( other.vmInstance != null ) {
return false;
}
} else if ( !this.vmInstance.equals( other.vmInstance ) ) {
return false;
}
return true;
}
/**
* @return
*/
public boolean isEmpty( ) {
return this.attachments.isEmpty( );
}
}