/*
* 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.OperationFailedException;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.dmr.ModelNode;
/**
* The operation transformer. For basic implementations {@see AbstractOperationTransformer}.
*
* @author <a href="mailto:tomaz.cerar@redhat.com">Tomaz Cerar</a>
*/
@FunctionalInterface
public interface OperationTransformer {
/**
* Transform the operation.
*
* @param context the operation context
* @param address the path address
* @param operation the operation
* @return the transformed operation
* @throws OperationFailedException
*/
TransformedOperation transformOperation(TransformationContext context, PathAddress address, ModelNode operation) throws OperationFailedException;
public class TransformedOperation implements OperationResultTransformer, OperationRejectionPolicy {
private final ModelNode transformedOperation;
private final OperationRejectionPolicy rejectPolicy;
private final OperationResultTransformer resultTransformer;
public TransformedOperation(ModelNode transformedOperation, OperationResultTransformer resultTransformer) {
this(transformedOperation, DEFAULT_REJECTION_POLICY, resultTransformer);
}
public TransformedOperation(ModelNode transformedOperation, OperationRejectionPolicy policy, OperationResultTransformer resultTransformer) {
this.transformedOperation = transformedOperation;
this.rejectPolicy = policy;
this.resultTransformer = resultTransformer;
}
public ModelNode getTransformedOperation() {
return transformedOperation;
}
public OperationResultTransformer getResultTransformer() {
return resultTransformer;
}
@Override
public boolean rejectOperation(final ModelNode preparedResult) {
return rejectPolicy.rejectOperation(preparedResult);
}
@Override
public String getFailureDescription() {
return rejectPolicy.getFailureDescription();
}
@Override
public ModelNode transformResult(final ModelNode result) {
return resultTransformer.transformResult(result);
}
}
OperationTransformer DEFAULT = new OperationTransformer() {
@Override
public TransformedOperation transformOperation(TransformationContext context, PathAddress address, ModelNode original) throws OperationFailedException {
return new TransformedOperation(original, OperationResultTransformer.ORIGINAL_RESULT);
}
};
OperationTransformer DISCARD = new OperationTransformer() {
@Override
public TransformedOperation transformOperation(TransformationContext context, PathAddress address, ModelNode operation) throws OperationFailedException {
return new TransformedOperation(null, DEFAULT_REJECTION_POLICY, SUCCESSFUL_RESULT);
}
};
OperationResultTransformer SUCCESSFUL_RESULT = new OperationResultTransformer() {
@Override
public ModelNode transformResult(ModelNode ignored) {
final ModelNode result = new ModelNode();
result.get(ModelDescriptionConstants.OUTCOME).set(ModelDescriptionConstants.SUCCESS);
result.get(ModelDescriptionConstants.RESULT);
return result;
}
};
OperationRejectionPolicy DEFAULT_REJECTION_POLICY = new OperationRejectionPolicy() {
@Override
public boolean rejectOperation(ModelNode preparedResult) {
return false;
}
@Override
public String getFailureDescription() {
return null;
}
};
}