/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat Middleware LLC, 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.services.path;
import static org.jboss.as.controller.ControllerMessages.MESSAGES;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP_ADDR;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.PATH;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.RELATIVE_TO;
import static org.jboss.as.controller.services.path.PathResourceDefinition.READ_ONLY;
import org.jboss.as.controller.AbstractWriteAttributeHandler;
import org.jboss.as.controller.ControllerMessages;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationContext.Stage;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.ServiceVerificationHandler;
import org.jboss.as.controller.SimpleAttributeDefinition;
import org.jboss.as.controller.registry.Resource;
import org.jboss.as.controller.services.path.PathManager.Event;
import org.jboss.as.controller.services.path.PathManagerService.PathEventContextImpl;
import org.jboss.dmr.ModelNode;
/**
* {@link OperationStepHandler} for the write-attribute operation for a path resource.
*
* @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
*/
class PathWriteAttributeHandler extends AbstractWriteAttributeHandler<PathWriteAttributeHandler.PathUpdate> {
private final PathManagerService pathManager;
private final boolean services;
PathWriteAttributeHandler(final PathManagerService pathManager, final SimpleAttributeDefinition definition, final boolean services) {
super(definition);
this.pathManager = pathManager;
this.services = services;
}
@Override
protected void finishModelStage(OperationContext context, ModelNode operation, String attributeName,
ModelNode newValue, ModelNode oldValue, Resource model) throws OperationFailedException {
// Guard against updates to read-only paths
final String pathName = PathAddress.pathAddress(operation.get(OP_ADDR)).getLastElement().getValue();
if (model.getModel().get(READ_ONLY.getName()).asBoolean(false)) {
throw ControllerMessages.MESSAGES.cannotModifyReadOnlyPath(pathName);
}
if (services) {
final PathEntry pathEntry = pathManager.getPathEntry(pathName);
if (pathEntry.isReadOnly()) {
throw MESSAGES.pathEntryIsReadOnly(operation.require(OP_ADDR).asString());
}
}
}
@Override
protected boolean requiresRuntime(OperationContext context) {
return services;
}
@Override
protected boolean applyUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
ModelNode resolvedValue, ModelNode currentValue, HandbackHolder<PathUpdate> handbackHolder) throws OperationFailedException {
final String pathName = PathAddress.pathAddress(operation.get(OP_ADDR)).getLastElement().getValue();
final PathEntry pathEntry = pathManager.getPathEntry(pathName);
final PathEntry backup = new PathEntry(pathEntry);
final PathEventContextImpl pathEventContext = pathManager.checkRestartRequired(context, pathName, Event.UPDATED);
if (pathEventContext.isInstallServices()) {
final ServiceVerificationHandler verificationHandler = new ServiceVerificationHandler();
context.addStep(verificationHandler, Stage.VERIFY);
if (attributeName.equals(PATH)) {
String pathVal = resolvedValue.asString();
pathManager.changePath(pathName, pathVal);
pathManager.changePathServices(context, pathName, pathVal, verificationHandler);
} else if (attributeName.equals(RELATIVE_TO)) {
String relToVal = resolvedValue.isDefined() ? resolvedValue.asString() : null;
pathManager.changeRelativePath( pathName, relToVal, true);
pathManager.changeRelativePathServices(context, pathName, relToVal, verificationHandler);
}
}
handbackHolder.setHandback(new PathUpdate(backup, pathEventContext));
return false;
}
@Override
protected void revertUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
ModelNode valueToRestore, ModelNode valueToRevert, PathUpdate handback) throws OperationFailedException {
final String pathName = PathAddress.pathAddress(operation.get(OP_ADDR)).getLastElement().getValue();
final PathEntry backup = handback.backup;
final PathEventContextImpl pathEventContext = handback.context;
if (pathEventContext.isInstallServices()) {
if (attributeName.equals(PATH)) {
pathManager.changePath(pathName, backup.getPath());
pathManager.changePathServices(context, pathName, valueToRestore.asString(), null);
} else if (attributeName.equals(RELATIVE_TO)) {
try {
pathManager.changeRelativePath(pathName, backup.getRelativeTo(), false);
} catch (OperationFailedException e) {
//Should not happen since false passed in for the 'check' parameter
throw new RuntimeException(e);
}
pathManager.changeRelativePathServices(context, pathName, valueToRestore.isDefined() ? valueToRestore.asString() : null, null);
}
} else {
pathEventContext.revert();
}
}
static class PathUpdate {
private final PathEntry backup;
private final PathEventContextImpl context;
private PathUpdate(PathEntry backup, PathEventContextImpl context) {
this.backup = backup;
this.context = context;
}
}
}