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/*******************************************************************************
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*Copyright (c) 2009 Eucalyptus Systems, Inc.
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, only version 3 of the License.
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* This file is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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* Please contact Eucalyptus Systems, Inc., 130 Castilian
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* Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/>
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* if you need additional information or have any questions.
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* This file may incorporate work covered under the following copyright and
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* Software License Agreement (BSD License)
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* Copyright (c) 2008, Regents of the University of California
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* All rights reserved.
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* Redistribution and use of this software in source and binary forms, with
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* or without modification, are permitted provided that the following
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. USERS OF
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* THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE
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* LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS
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* SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
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* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA
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* BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN
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* THE REGENTS’ DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT
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* OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO IDENTIFIED, OR
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* WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT NEEDED TO COMPLY WITH
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* ANY SUCH LICENSES OR RIGHTS.
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*******************************************************************************/
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* Author: chris grzegorczyk <grze@eucalyptus.com>
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package com.eucalyptus.bootstrap;
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import java.util.Arrays;
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import java.util.List;
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import java.util.NavigableSet;
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import java.util.NoSuchElementException;
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import org.apache.log4j.Logger;
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import com.eucalyptus.component.Components;
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import com.eucalyptus.component.Service;
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import com.eucalyptus.util.NetworkUtil;
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public enum Component {
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bootstrap( false, true, false ),
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component( false, true, false ),
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eucalyptus( true, false, true ),
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walrus( true, false, false ),
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dns( true, false, true ),
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storage( true, false, false ),
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db( false, false, true ),
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jetty( true, false, true ),
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configuration( true, false, true ),
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cluster( false, false, false ),
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any( false, true, false );
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private static Logger LOG = Logger.getLogger( Component.class );
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* @note is a sub-service of {@link Component.eucalyptus}
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private final Boolean cloudLocal;
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* @note should have a dispatcher built
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private final Boolean hasDispatcher;
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* @note always load the service locally
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private final Boolean alwaysLocal;
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private Component( Boolean hasDispatcher, Boolean alwaysLocal, Boolean cloudLocal ) {
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this.alwaysLocal = alwaysLocal;
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this.hasDispatcher = hasDispatcher;
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this.cloudLocal = cloudLocal;
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public Boolean isEnabled( ) {
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return Components.lookup( this ).isEnabled( );
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} catch ( NoSuchElementException ex ) {
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public Boolean isLocal( ) {
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return Components.lookup( this ).isLocal( );
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} catch ( NoSuchElementException ex ) {
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public String getLocalAddress( ) {
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return this.getLocalUri( ).toASCIIString( );
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public URI getUri( ) {
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com.eucalyptus.component.Component c = Components.lookup( this );
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NavigableSet<Service> services = c.getServices( );
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if( this.isCloudLocal( ) && services.size( ) != 1 ) {
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throw new RuntimeException( "Cloud local component has "+services.size()+" registered services (Should be exactly 1): " + this + " " + services.toString( ) );
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} else if( this.isCloudLocal( ) && services.size( ) == 1 ) {
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return services.first( ).getUri( );
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for( Service s : services ) {
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throw new RuntimeException( "Attempting to get the URI for a service which is either not a singleton or has no locally defined service endpoint." );
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public URI getLocalUri( ) {
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return Components.lookup( this ).getConfiguration( ).getLocalUri( );
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public Boolean isCloudLocal( ) {
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return this.cloudLocal;
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public Boolean hasDispatcher( ) {
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return this.hasDispatcher;
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public Boolean isAlwaysLocal( ) {
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return this.alwaysLocal;
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public static List<Component> list( ) {
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return Arrays.asList( Component.values( ) );
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public String getRegistryKey( String hostName ) {
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if( NetworkUtil.testLocal( hostName ) ) {
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return this.name( ) + "@localhost";
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return this.name( ) + "@" + hostName;