/*************************************************************************
* Copyright 2009-2013 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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* You should have received a copy of the GNU General Public License
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*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
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*
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* and permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
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************************************************************************/
package com.eucalyptus.cluster.proxy.node;
import org.apache.log4j.Logger;
import com.eucalyptus.bootstrap.Bootstrap;
import com.eucalyptus.bootstrap.Handles;
import com.eucalyptus.component.*;
import com.eucalyptus.component.annotation.ComponentPart;
import com.eucalyptus.cluster.proxy.ProxyClusterController;
import com.eucalyptus.empyrean.EnableServiceType;
import com.eucalyptus.empyrean.StopServiceType;
import com.eucalyptus.util.Exceptions;
import com.google.common.base.Joiner;
import com.eucalyptus.cluster.common.msgs.NodeInfo;
/**
* @author chris grzegorczyk <grze@eucalyptus.com>
* @todo doc
*/
@ComponentPart(ProxyNodeController.class)
@Handles({RegisterNodeControllerType.class,
DeregisterNodeControllerType.class,
DescribeNodeControllersType.class,
ModifyNodeControllerAttributeType.class})
public class ProxyNodeServiceBuilder implements ServiceBuilder<ProxyNodeConfiguration> {
private static Logger LOG = Logger.getLogger( ProxyNodeServiceBuilder.class );
@Override
public ComponentId getComponentId() {
return ComponentIds.lookup( ProxyNodeController.class );
}
@Override
public boolean checkAdd( String partition, String name, String host, Integer port ) throws ServiceRegistrationException {
throw failUnsupported( );
}
@Override
public boolean checkUpdate( final String partition, final String name, final String host, final Integer port ) throws ServiceRegistrationException {
throw failUnsupported( );
}
private ServiceRegistrationException failUnsupported( ) throws ServiceRegistrationException {
throw new ServiceRegistrationException(
"Node Controllers must currently be registered " +
"on the Cluster Controllers for the partition." +
"Apologies. Please see the documentation." );
}
/**
* Here we do nothing for now.
*/
@Override
public void fireLoad( ServiceConfiguration parent ) throws ServiceRegistrationException {
}
/**
* Here we do nothing for now.
*/
@Override
public void fireStart( ServiceConfiguration config ) throws ServiceRegistrationException {
//GRZE: we dont send this at the moment -- it is a NOOP at the CC
// send( new StartServiceType( ), config );
}
/**
* Here we do nothing for now.
*/
@Override
public void fireStop( ServiceConfiguration config ) throws ServiceRegistrationException {
if ( Bootstrap.isOperational() ) {
Nodes.send( new StopServiceType( ), config );
}
}
@Override
public void fireEnable( ServiceConfiguration config ) throws ServiceRegistrationException {
try {
ServiceConfiguration ccConfig = Topology.lookup( ProxyClusterController.class, config.lookupPartition() );
Nodes.send( new EnableServiceType(), config );
} catch ( RuntimeException e ) {
throw new ServiceRegistrationException( "Failed to enable node controller " + config.getFullName() + " because: " + e.getMessage(), e );
}
}
@Override
public void fireDisable( ServiceConfiguration config ) throws ServiceRegistrationException {
//GRZE: we dont send this at the moment -- it is a NOOP at the CC
// send( config, new DisableServiceType( ) );
}
@Override
public void fireCheck( ServiceConfiguration config ) throws ServiceRegistrationException {
//GRZE: an NC should always have an ENABLED CC, otherwise it should go NOTREADY.
//GRZE:NOTE: at this level we assume a dependence on the ServiceConfiguration of the CC, it is correct to fail if that is missing.
final ServiceConfiguration ccConfig = Nodes.lookupClusterController( config );
if ( !Component.State.ENABLED.apply( ccConfig ) || (Component.State.DISABLED.apply( ccConfig ) && ccConfig.lookupStateMachine().isBusy() ) ) {
//GRZE: the CC's state should always bound the NCs from above EXCEPT when it is in transition from DISABLED->ENABLED
throw Faults.failure( config, Exceptions.noSuchElement( "Failed to find ENABLED Cluster Controller for " + config ) );
} else {
NodeInfo nodeInfo = Nodes.lookupNodeInfo( ccConfig ).apply( config.getName() );
if(nodeInfo.getLastException()==null) {
String checkMessage = Joiner.on(' ').useForNull( "<null>" ).join( nodeInfo.getLastSeen(), nodeInfo.getLastState(), nodeInfo.getLastMessage() );
throw Faults.advisory( config, checkMessage );
} else {
throw nodeInfo.getLastException();
}
}
}
@Override
public ProxyNodeConfiguration newInstance( String partition, String name, String host, Integer port ) {
return new ProxyNodeConfiguration( partition, host );
}
@Override
public ProxyNodeConfiguration newInstance() {
return new ProxyNodeConfiguration();
}
}