/*
* 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 static org.jboss.as.controller.ControllerMessages.MESSAGES;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP_ADDR;
import java.util.Iterator;
import java.util.Set;
import org.jboss.as.controller.ExpressionResolver;
import org.jboss.as.controller.ModelVersion;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.ProcessType;
import org.jboss.as.controller.RunningMode;
import org.jboss.as.controller.registry.ImmutableManagementResourceRegistration;
import org.jboss.as.controller.registry.Resource;
import org.jboss.dmr.ModelNode;
/**
* @author Emanuel Muckenhuber
*/
class ResourceTransformationContextImpl implements ResourceTransformationContext {
private final Resource root;
private final PathAddress current;
private final PathAddress read;
private final OriginalModel originalModel;
private final TransformersLogger logger;
static ResourceTransformationContext create(final OperationContext context, final TransformationTarget target) {
return create(context, target, PathAddress.EMPTY_ADDRESS, PathAddress.EMPTY_ADDRESS);
}
static ResourceTransformationContext create(final OperationContext context, final TransformationTarget target, final PathAddress current, final PathAddress read) {
final Resource root = Resource.Factory.create();
final Resource original = context.readResourceFromRoot(PathAddress.EMPTY_ADDRESS, true);
final ImmutableManagementResourceRegistration registration = context.getRootResourceRegistration().getSubModel(PathAddress.EMPTY_ADDRESS);
final ExpressionResolver expressionResolver = TransformerExpressionResolver.create(context, target.getTargetType());
final OriginalModel originalModel = new OriginalModel(original, context.getRunningMode(), context.getProcessType(), target, registration, expressionResolver);
return new ResourceTransformationContextImpl(root, current, read, originalModel);
}
static ResourceTransformationContext create(TransformationTarget target, Resource model, ImmutableManagementResourceRegistration registration, ExpressionResolver resolver, RunningMode runningMode, ProcessType type) {
final Resource root = Resource.Factory.create();
final OriginalModel originalModel = new OriginalModel(model, runningMode, type, target, registration, resolver);
return new ResourceTransformationContextImpl(root, PathAddress.EMPTY_ADDRESS, originalModel);
}
ResourceTransformationContextImpl(Resource root, PathAddress address, final OriginalModel originalModel) {
this(root, address, address, originalModel);
}
ResourceTransformationContextImpl(Resource root, PathAddress address, PathAddress read, final OriginalModel originalModel) {
this.root = root;
this.current = address;
this.read = read;
this.originalModel = originalModel;
this.logger = TransformersLogger.getLogger(originalModel.target);
}
public Resource createResource(final PathAddress element) {
final PathAddress absoluteAddress = this.current.append(element);
final PathAddress readAddress = this.read.append(element);
final Resource resource = Resource.Factory.create();
addTransformedRecursiveResourceFromRoot(absoluteAddress, readAddress, resource);
return resource;
}
public Resource createResource(final PathAddress element, Resource copy) {
final PathAddress absoluteAddress = this.current.append(element);
final PathAddress readAddress = this.read.append(element);
final Resource resource = Resource.Factory.create();
resource.writeModel(copy.getModel());
addTransformedRecursiveResourceFromRoot(absoluteAddress, readAddress, resource);
return resource;
}
@Override
public ResourceTransformationContext addTransformedResource(PathAddress address, Resource toAdd) {
final PathAddress absoluteAddress = this.current.append(address);
final PathAddress read = this.read.append(address);
return addTransformedResourceFromRoot(absoluteAddress, read, toAdd);
}
@Override
public ResourceTransformationContext addTransformedResourceFromRoot(PathAddress absoluteAddress, Resource toAdd) {
return addTransformedResourceFromRoot(absoluteAddress, absoluteAddress, toAdd);
}
public ResourceTransformationContext addTransformedResourceFromRoot(PathAddress absoluteAddress, PathAddress read, Resource toAdd) {
// Only keep the mode, drop all children
final Resource copy = Resource.Factory.create();
if (toAdd != null) {
copy.writeModel(toAdd.getModel());
}
return addTransformedRecursiveResourceFromRoot(absoluteAddress, read, copy);
}
@Override
public void addTransformedRecursiveResource(PathAddress relativeAddress, Resource resource) {
final PathAddress absoluteAddress = this.current.append(relativeAddress);
final PathAddress readAddress = this.read.append(relativeAddress);
addTransformedRecursiveResourceFromRoot(absoluteAddress, readAddress, resource);
}
private ResourceTransformationContext addTransformedRecursiveResourceFromRoot(final PathAddress absoluteAddress, final PathAddress read, final Resource toAdd) {
Resource model = this.root;
if (absoluteAddress.size() > 0) {
final Iterator<PathElement> i = absoluteAddress.iterator();
while (i.hasNext()) {
final PathElement element = i.next();
if (element.isMultiTarget()) {
throw MESSAGES.cannotWriteTo("*");
}
if (!i.hasNext()) {
if (model.hasChild(element)) {
throw MESSAGES.duplicateResourceAddress(absoluteAddress);
} else {
model.registerChild(element, toAdd);
model = toAdd;
}
} else {
model = model.getChild(element);
if (model == null) {
PathAddress ancestor = PathAddress.EMPTY_ADDRESS;
for (PathElement pe : absoluteAddress) {
ancestor = ancestor.append(pe);
if (element.equals(pe)) {
break;
}
}
throw MESSAGES.resourceNotFound(ancestor, absoluteAddress);
}
}
}
} else {
//If this was the root address, replace the resource model
model.writeModel(toAdd.getModel());
}
return new ResourceTransformationContextImpl(root, absoluteAddress, read, originalModel);
}
@Override
public Resource readTransformedResource(final PathAddress relativeAddress) {
final PathAddress address = this.current.append(relativeAddress);
return Resource.Tools.navigate(root, address);
}
public TransformerEntry resolveTransformerEntry(PathAddress address) {
final TransformerEntry entry = originalModel.target.getTransformerEntry(address);
if (entry == null) {
return TransformerEntry.ALL_DEFAULTS;
}
return entry;
}
@Override
public ResourceTransformer resolveTransformer(PathAddress address) {
final ResourceTransformer transformer = originalModel.target.resolveTransformer(address);
if (transformer == null) {
final ImmutableManagementResourceRegistration childReg = originalModel.getRegistration(address);
if (childReg == null) {
return ResourceTransformer.DISCARD;
}
if (childReg.isRemote() || childReg.isRuntimeOnly()) {
return ResourceTransformer.DISCARD;
}
return ResourceTransformer.DEFAULT;
}
return transformer;
}
protected ResourceTransformer resolveTransformer(TransformerEntry entry, PathAddress address) {
final ResourceTransformer transformer = entry.getResourceTransformer();
if (transformer == null) {
final ImmutableManagementResourceRegistration childReg = originalModel.getRegistration(address);
if (childReg == null) {
return ResourceTransformer.DISCARD;
}
if (childReg.isRemote() || childReg.isRuntimeOnly()) {
return ResourceTransformer.DISCARD;
}
return ResourceTransformer.DEFAULT;
}
return transformer;
}
@Override
public void processChildren(final Resource resource) throws OperationFailedException {
final Set<String> types = resource.getChildTypes();
for (final String type : types) {
for (final Resource.ResourceEntry child : resource.getChildren(type)) {
processChild(child.getPathElement(), child);
}
}
}
@Override
public void processChild(final PathElement element, Resource child) throws OperationFailedException {
final PathAddress childAddress = read.append(element); // read
final TransformerEntry entry = resolveTransformerEntry(childAddress);
final PathAddressTransformer path = entry.getPathTransformation();
final PathAddress currentAddress = path.transform(element, new PathAddressTransformer.Builder() { // write
@Override
public PathAddress getOriginal() {
return childAddress;
}
@Override
public PathAddress getCurrent() {
return current;
}
@Override
public PathAddress getRemaining() {
return PathAddress.EMPTY_ADDRESS.append(element);
}
@Override
public PathAddress next(PathElement... elements) {
return current.append(elements);
}
});
final ResourceTransformer transformer = resolveTransformer(entry, childAddress);
final ResourceTransformationContext childContext = new ResourceTransformationContextImpl(root, currentAddress, childAddress, originalModel);
transformer.transformResource(childContext, currentAddress, child);
}
@Override
public TransformationTarget getTarget() {
return originalModel.target;
}
@Override
public ProcessType getProcessType() {
return originalModel.type;
}
@Override
public RunningMode getRunningMode() {
return originalModel.mode;
}
@Override
public ImmutableManagementResourceRegistration getResourceRegistration(PathAddress address) {
final PathAddress a = read.append(address);
return originalModel.getRegistration(a);
}
@Override
public ImmutableManagementResourceRegistration getResourceRegistrationFromRoot(PathAddress address) {
return originalModel.getRegistration(address);
}
@Override
public Resource readResource(PathAddress address) {
final PathAddress a = read.append(address);
return originalModel.get(a);
}
@Override
public Resource readResourceFromRoot(PathAddress address) {
return originalModel.get(address);
}
@Override
public ModelNode resolveExpressions(final ModelNode node) throws OperationFailedException {
return originalModel.expressionResolver.resolveExpressions(node);
}
@Override
public Resource getTransformedRoot() {
return root;
}
@Deprecated
static ResourceTransformationContext createAliasContext(final PathAddress address, final ResourceTransformationContext context) {
if (context instanceof ResourceTransformationContextImpl) {
final ResourceTransformationContextImpl impl = (ResourceTransformationContextImpl) context;
return new ResourceTransformationContextImpl(impl.root, address, impl.read, impl.originalModel);
} else {
throw new IllegalArgumentException("wrong context type");
}
}
@Deprecated
static TransformationContext wrapForOperation(TransformationContext context, ModelNode operation) {
if(context instanceof ResourceTransformationContextImpl) {
final ResourceTransformationContextImpl impl = (ResourceTransformationContextImpl) context;
return new ResourceTransformationContextImpl(impl.root, PathAddress.pathAddress(operation.get(OP_ADDR)), impl.originalModel);
} else {
return context;
}
}
@Override
public TransformersLogger getLogger() {
return logger;
}
static class OriginalModel {
private final Resource original;
private final RunningMode mode;
private final ProcessType type;
private final TransformationTarget target;
private final ImmutableManagementResourceRegistration registration;
private final ExpressionResolver expressionResolver;
OriginalModel(Resource original, RunningMode mode, ProcessType type, TransformationTarget target, ImmutableManagementResourceRegistration registration, ExpressionResolver expressionResolver) {
this.original = original;
this.mode = mode;
this.type = type;
this.target = target;
this.registration = registration;
this.expressionResolver = expressionResolver;
}
Resource get(final PathAddress address) {
return original.navigate(address);
}
ImmutableManagementResourceRegistration getRegistration(PathAddress address) {
return registration.getSubModel(address);
}
}
}