/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.controller.transform;
import org.jboss.as.controller.ControllerLogger;
import org.jboss.as.controller.ModelVersion;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.ResourceDefinition;
import org.jboss.as.controller.registry.LegacyResourceDefinition;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.controller.registry.Resource;
import org.jboss.dmr.ModelNode;
import java.io.IOException;
import java.io.InputStream;
/**
* Basic transformer working on the basis of the model rather the resource. This however
* requires the original ResourceDefinition for conversion.
*
* @author Emanuel Muckenhuber
*/
public abstract class AbstractResourceModelTransformer implements ResourceTransformer {
private final ResourceDefinitionLoader loader;
protected AbstractResourceModelTransformer(ResourceDefinitionLoader loader) {
this.loader = loader;
}
/**
* Transform the model.
*
* @param context the transformation context
* @param model the model to transform
* @return the transformed model
*/
protected abstract ModelNode transformModel(TransformationContext context, ModelNode model);
@Override
public void transformResource(final ResourceTransformationContext context, final PathAddress address, final Resource resource) {
// Transform the model recursively
final ModelNode recursive = Resource.Tools.readModel(resource);
final ModelNode result = transformModel(context, recursive);
// Create the target registration based on the old resource definition
final TransformationTarget target = context.getTarget();
final ResourceDefinition definition = loader.load(target);
final ManagementResourceRegistration targetDefinition = ManagementResourceRegistration.Factory.create(definition);
final Resource transformed = TransformationUtils.modelToResource(targetDefinition, result, false);
// Add the model recursively
context.addTransformedRecursiveResource(PathAddress.EMPTY_ADDRESS, transformed);
}
public static interface ResourceDefinitionLoader {
/**
* Load the resource definition.
*
* @param target the target
* @return the resource definition
*/
ResourceDefinition load(TransformationTarget target);
}
public abstract static class AbstractDefinitionLoader implements ResourceDefinitionLoader {
/**
* Open the stream to the resource definition model.
*
* @param target the transformation target
* @return the stream
* @throws IOException
*/
abstract InputStream openStream(TransformationTarget target) throws IOException;
@Override
public ResourceDefinition load(TransformationTarget target) {
ModelNode model = null;
try {
final InputStream is = openStream(target);
try {
if (is == null) {
return null;
}
model = ModelNode.fromStream(is);
} catch (IOException e) {
ControllerLogger.ROOT_LOGGER.cannotReadTargetDefinition(e);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
//
}
}
}
} catch (IOException e) {
ControllerLogger.ROOT_LOGGER.cannotReadTargetDefinition(e);
}
if(model != null) {
return new LegacyResourceDefinition(model);
} else {
return null;
}
}
}
}