/*******************************************************************************
*Copyright (c) 2009 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
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* 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., 130 Castilian
* Dr., Goleta, CA 93101 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
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*******************************************************************************/
/*
* Author: chris grzegorczyk <grze@eucalyptus.com>
*/
package com.eucalyptus.cluster;
import com.eucalyptus.entities.EntityWrapper;
import com.eucalyptus.entities.VmType;
import com.eucalyptus.util.EucalyptusCloudException;
import java.util.List;
import java.util.NavigableSet;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentNavigableMap;
import java.util.concurrent.ConcurrentSkipListMap;
public class VmTypes {
private static VmTypes singleton;
private ConcurrentNavigableMap<String, VmType> vmTypeMap;
private VmTypes( ) {
this.vmTypeMap = new ConcurrentSkipListMap<String, VmType>( );
this.update( );
}
private static VmTypes getSingleton( ) {
synchronized(VmTypes.class) {
singleton = singleton == null ? new VmTypes( ) : singleton;
}
return singleton;
}
public static synchronized void update( Set<VmType> newVmTypes ) throws EucalyptusCloudException {
NavigableSet<VmType> newList = VmTypes.list( );
if ( newVmTypes.size( ) != newList.size( ) ) throw new EucalyptusCloudException( "Proposed VmTypes fail to satisfy well-ordering requirement." );
for ( VmType newVm : newVmTypes ) {
if ( !getSingleton( ).vmTypeMap.containsValue( newVm ) ) {
EntityWrapper<VmType> db = new EntityWrapper<VmType>( );
try {
VmType oldVm = db.getUnique( new VmType( newVm.getName( ) ) );
oldVm.setCpu( newVm.getCpu( ) );
oldVm.setDisk( newVm.getDisk( ) );
oldVm.setMemory( newVm.getMemory( ) );
db.commit( );
} catch ( EucalyptusCloudException e ) {
db.rollback( );
throw e;
} catch ( Throwable t ) {
db.rollback( );
throw new EucalyptusCloudException( t );
}
}
}
}
private synchronized void update( ) {
EntityWrapper<VmType> db = new EntityWrapper<VmType>( );
try {
List<VmType> vmTypeList = db.query( new VmType( ) );
for ( VmType v : vmTypeList ) {
this.vmTypeMap.putIfAbsent( v.getName( ), v );
if ( !this.vmTypeMap.get( v.getName( ) ).equals( v ) ) this.vmTypeMap.replace( v.getName( ), v );
}
if ( vmTypeList.isEmpty( ) ) {
db.add( new VmType( "m1.small", 1, 10, 128 ) );
db.add( new VmType( "c1.medium", 2, 10, 128 ) );
db.add( new VmType( "m1.large", 2, 10, 512 ) );
db.add( new VmType( "m1.xlarge", 2, 10, 1024 ) );
db.add( new VmType( "c1.xlarge", 4, 10, 2048 ) );
}
db.commit( );
} catch ( Throwable e ) {
db.rollback( );
}
}
public static synchronized VmType getVmType( String name ) {
getSingleton( ).update( );
return getSingleton( ).vmTypeMap.get( name );
}
public static synchronized NavigableSet<VmType> list( ) {
getSingleton( ).update( );
return new TreeSet<VmType>( getSingleton( ).vmTypeMap.values( ) );
}
}