/*************************************************************************
* Copyright 2009-2015 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
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* 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
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* 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.component;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import javax.annotation.Nullable;
import org.apache.log4j.Logger;
import com.eucalyptus.util.Classes;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.ClassToInstanceMap;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.MutableClassToInstanceMap;
public class ComponentIds {
private static Logger LOG = Logger.getLogger( ComponentIds.class );
private static final ClassToInstanceMap<ComponentId> compIdMap = MutableClassToInstanceMap.create( );
private static final Map<String, Class<? extends ComponentId>> compIdName = Maps.newHashMap( );
private static final Map<String, Class<? extends ComponentId>> compIdNames = Maps.newHashMap( );
public static List<Class<? extends ComponentId>> listTypes( ) {
return Lists.newArrayList( compIdMap.keySet( ) );
}
public static List<ComponentId> list( ) {
return Lists.newArrayList( compIdMap.values( ) );
}
@SuppressWarnings( "unchecked" )
public final static <T extends ComponentId> T lookup( final Class<T> compIdClass ) {
if ( !compIdMap.containsKey( compIdClass ) ) {
T newInstance = Classes.newInstance( compIdClass );
compIdMap.putInstance( compIdClass, newInstance );
compIdName.put( newInstance.name( ), compIdClass );
for ( final String name : newInstance.getServiceNames( ) ) {
compIdNames.put( name, compIdClass );
}
LOG.debug( "Registered ComponentId: " + compIdClass.toString( ) );
return newInstance;
} else {
return ( T ) compIdMap.get( compIdClass );
}
}
/**
* Lookup the ComponentId with name <tt>name</tt>. Note that this method is case-insensitive in
* that the lower-case of <tt>name</tt> is compared to the l-case of ComponentId names.
*
* @param name
* @throws NoSuchElementException
* @return
*/
public final static ComponentId lookup( final String name ) {
if ( !compIdName.containsKey( name.toLowerCase( ) ) ) {
throw new NoSuchElementException( "No ComponentId with name: " + name.toLowerCase( ) );
} else {
return compIdMap.get( compIdName.get( name.toLowerCase( ) ) );
}
}
/**
* Lookup the ComponentId with dns name <tt>name</tt>.
*
* @throws NoSuchElementException If not found
*/
public static ComponentId lookupByDnsName( final String name ) {
if ( !compIdNames.containsKey( name.toLowerCase( ) ) ) {
throw new NoSuchElementException( "No ComponentId with dns name: " + name.toLowerCase( ) );
} else {
return compIdMap.get( compIdNames.get( name.toLowerCase( ) ) );
}
}
public static Predicate<ComponentId> manyToOne( ) {
return ComponentIdPredicates.MANY_TO_ONE;
}
static ComponentId createEphemeral( String componentIdName ) {
return new ComponentId( componentIdName ) {{}};
}
public static Function<ComponentId,String> name( ) {
return ComponentIdStringFunctions.NAME;
}
private enum ComponentIdPredicates implements Predicate<ComponentId> {
MANY_TO_ONE{
@Override
public boolean apply( @Nullable final ComponentId componentId ) {
return componentId != null && componentId.isManyToOnePartition( );
}
}
}
private enum ComponentIdStringFunctions implements Function<ComponentId,String> {
NAME {
@Nullable
@Override
public String apply( @Nullable final ComponentId componentId ) {
return componentId == null ? null : componentId.name( );
}
}
}
}