/*******************************************************************************
*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
* the Free Software Foundation, only version 3 of the License.
*
*
* This file 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., 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
* 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
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*******************************************************************************/
/*
* Author: chris grzegorczyk <grze@eucalyptus.com>
*/
package com.eucalyptus.bootstrap;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.log4j.Logger;
import org.hsqldb.Server;
import org.hsqldb.persist.HsqlProperties;
import com.eucalyptus.bootstrap.Bootstrap.Stage;
import com.eucalyptus.event.ClockTick;
import com.eucalyptus.event.Event;
import com.eucalyptus.event.EventListener;
import com.eucalyptus.event.ListenerRegistry;
import com.eucalyptus.scripting.ScriptExecutionFailedException;
import com.eucalyptus.scripting.groovy.GroovyUtil;
import com.eucalyptus.system.Threads;
import edu.emory.mathcs.backport.java.util.concurrent.TimeUnit;
@Provides(Component.db)
@RunDuring(Bootstrap.Stage.DatabaseInit)
@DependsLocal(Component.eucalyptus)
public class LocalDatabaseBootstrapper extends Bootstrapper implements EventListener, Runnable, DatabaseBootstrapper {
private static Logger LOG = Logger.getLogger( LocalDatabaseBootstrapper.class );
private static DatabaseBootstrapper singleton;
public static DatabaseBootstrapper getInstance( ) {
synchronized ( LocalDatabaseBootstrapper.class ) {
if ( singleton == null ) {
singleton = new LocalDatabaseBootstrapper( );
}
}
return singleton;
}
private static void setDefault( String key, Object value ) {
if( System.getProperties( ).containsKey( key ) ) System.setProperty( key, value.toString() );
}
private Server db;
private String fileName;
private LocalDatabaseBootstrapper( ) {
ListenerRegistry.getInstance( ).register( ClockTick.class, this );
}
@Override
public boolean check( ) {
return false;
}
@Override
public boolean destroy( ) throws Exception {
return false;
}
@Override
public boolean load( Stage current ) throws Exception {
try {
LOG.debug( "Initializing SSL just in case: " + ClassLoader.getSystemClassLoader().loadClass( "com.eucalyptus.auth.util.SslSetup" ) );
} catch ( Throwable t ) {}
try {
LOG.debug( "Initializing db password: " + ClassLoader.getSystemClassLoader().loadClass( "com.eucalyptus.auth.util.Hashes" ) );
} catch ( Throwable t ) {}
createDatabase( );
return true;
}
public boolean isRunning( ) {
try {
if ( this.db != null ) this.db.checkRunning( true );
return true;
} catch ( RuntimeException e ) {
return false;
}
}
private static AtomicBoolean hup = new AtomicBoolean( false );
public void hup( ) {
if( hup.compareAndSet( false, true ) ) {
try {
if ( this.db != null ) {
this.db.checkRunning( true );
this.db.start( );
}
} catch ( RuntimeException e ) {
this.db.stop( );
this.createDatabase( );
this.waitForDatabase( );
}
} else {
LOG.info("Already scheduled a database restart.");
}
}
private void createDatabase( ) {
try {
GroovyUtil.evaluateScript( "before_database.groovy" );//TODO: move this ASAP!
} catch ( ScriptExecutionFailedException e ) {
LOG.fatal( e, e );
LOG.fatal( "Failed to initialize the database layer." );
System.exit( -1 );
}
this.db = new Server( );
this.db.setProperties( new HsqlProperties( DatabaseConfig.getProperties( ) ) );
Threads.newThread( this ).start( );
try {
GroovyUtil.evaluateScript( "after_database.groovy" );//TODO: move this ASAP!
} catch ( ScriptExecutionFailedException e ) {
LOG.fatal( e, e );
LOG.fatal( "Failed to initialize the persistence layer." );
System.exit( -1 );
}
}
@Override
public boolean start( ) throws Exception {
this.waitForDatabase( );
try {
GroovyUtil.evaluateScript( "after_persistence.groovy" );//TODO: move this ASAP!
} catch ( ScriptExecutionFailedException e ) {
LOG.fatal( e, e );
LOG.fatal( "Failed to initialize the persistence layer." );
System.exit( -1 );
}
return true;
}
private void waitForDatabase( ) {
while ( this.db.getState( ) != 1 ) {
Throwable t = this.db.getServerError( );
if ( t != null ) {
LOG.error( t, t );
throw new RuntimeException( t );
}
try {
TimeUnit.SECONDS.sleep( 1 );
} catch ( InterruptedException e ) {
Thread.currentThread( ).interrupt( );
}
LOG.info( "Waiting for database to start..." );
}
}
public void run( ) {
this.db.start( );
}
@Override
public boolean stop( ) {
return false;
}
public String getFileName( ) {
return fileName;
}
public void setFileName( String fileName ) {
LOG.info( "Setting hsqldb filename=" + fileName );
this.fileName = fileName;
}
@Override
public void advertiseEvent( Event event ) {}
@Override
public void fireEvent( Event event ) {
if( event instanceof ClockTick && Component.eucalyptus.isLocal( ) ) {
try {
LOG.trace( "-> Ping database." );
this.isRunning( );
} catch ( RuntimeException e ) {
LOG.fatal( e, e );
}
}
}
}