/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, 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.description;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.jboss.as.controller.ControllerMessages;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.registry.Resource;
import org.jboss.as.controller.transform.OperationRejectionPolicy;
import org.jboss.as.controller.transform.OperationResultTransformer;
import org.jboss.as.controller.transform.OperationTransformer;
import org.jboss.as.controller.transform.PathAddressTransformer;
import org.jboss.as.controller.transform.ResourceTransformationContext;
import org.jboss.as.controller.transform.ResourceTransformer;
import org.jboss.as.controller.transform.TransformationContext;
import org.jboss.dmr.ModelNode;
/**
* @author Emanuel Muckenhuber
*/
class TransformingDescription extends AbstractDescription implements TransformationDescription, ResourceTransformer, OperationTransformer {
private final DiscardPolicy discardPolicy;
private final List<TransformationDescription> children;
private final Map<String, AttributeTransformationDescription> attributeTransformations;
private final List<TransformationRule> rules = Collections.emptyList();
private final Map<String, OperationTransformer> operationTransformers;
private final List<String> discardedOperations;
private final ResourceTransformer resourceTransformer;
protected TransformingDescription(final PathElement pathElement, final PathAddressTransformer pathAddressTransformer,
final DiscardPolicy discardPolicy, final boolean inherited,
final ResourceTransformer resourceTransformer,
final Map<String, AttributeTransformationDescription> attributeTransformations,
final Map<String, OperationTransformer> operations,
final List<TransformationDescription> children,
final List<String> discardedOperations) {
super(pathElement, pathAddressTransformer, inherited);
this.children = children;
this.discardPolicy = discardPolicy;
this.resourceTransformer = resourceTransformer;
this.attributeTransformations = attributeTransformations;
this.discardedOperations = discardedOperations;
this.operationTransformers = operations;
}
@Override
public OperationTransformer getOperationTransformer() {
return this;
}
@Override
public ResourceTransformer getResourceTransformer() {
return this;
}
@Override
public Map<String, OperationTransformer> getOperationTransformers() {
return Collections.unmodifiableMap(operationTransformers);
}
@Override
public List<TransformationDescription> getChildren() {
return Collections.unmodifiableList(children);
}
@Override
public OperationTransformer.TransformedOperation transformOperation(final TransformationContext ctx, final PathAddress address, final ModelNode operation) throws OperationFailedException {
// See whether the operation should be rejected or not
switch (discardPolicy) {
case REJECT_AND_WARN:
// Just execute the original operation to see that it failed
return new TransformedOperation(operation, new OperationRejectionPolicy() {
@Override
public boolean rejectOperation(ModelNode preparedResult) {
return true;
}
@Override
public String getFailureDescription() {
return ControllerMessages.MESSAGES.rejectResourceOperationTransformation(address, operation);
}
}, OperationResultTransformer.ORIGINAL_RESULT);
case DISCARD_AND_WARN:
case SILENT:
return OperationTransformer.DISCARD.transformOperation(ctx, address, operation);
}
final Iterator<TransformationRule> iterator = rules.iterator();
final TransformationRule.ChainedOperationContext context = new TransformationRule.ChainedOperationContext(ctx) {
@Override
void invokeNext(OperationTransformer.TransformedOperation transformedOperation) throws OperationFailedException {
recordTransformedOperation(transformedOperation);
if(iterator.hasNext()) {
final TransformationRule next = iterator.next();
// TODO hmm, do we need to change the address?
next.transformOperation(transformedOperation.getTransformedOperation(), address, this);
}
}
};
// Kick off the chain
final TransformationRule first = new AttributeTransformationRule(attributeTransformations);
first.transformOperation(operation, address, context);
// Create the composite operation result
return context.createOp();
}
@Override
public void transformResource(final ResourceTransformationContext ctx, final PathAddress address, final Resource original) throws OperationFailedException {
final ModelNode originalModel = TransformationRule.cloneAndProtect(original.getModel());
// See whether the model can be discarded
switch (discardPolicy) {
case DISCARD_AND_WARN:
case REJECT_AND_WARN:
ctx.getLogger().logRejectedResourceWarning(address, null);
return;
case SILENT:
ResourceTransformer.DISCARD.transformResource(ctx, address, original);
return;
}
final Iterator<TransformationRule> iterator = rules.iterator();
final TransformationRule.ChainedResourceContext context = new TransformationRule.ChainedResourceContext(ctx) {
@Override
void invokeNext(final Resource resource) throws OperationFailedException {
if(iterator.hasNext()) {
final TransformationRule next = iterator.next();
next.transformResource(resource, address, this);
} else {
resourceTransformer.transformResource(ctx, address, resource);
}
}
};
// Kick off the chain
final TransformationRule rule = new AttributeTransformationRule(attributeTransformations);
rule.transformResource(original, address, context);
}
public List<String> getDiscardedOperations() {
return discardedOperations;
}
}