/*
* 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.operations.global;
import static org.jboss.as.controller.ControllerMessages.MESSAGES;
import static org.jboss.as.controller.operations.global.GlobalOperationHandlers.NAME;
import static org.jboss.as.controller.operations.global.GlobalOperationHandlers.VALUE;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationDefinition;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.SimpleOperationDefinitionBuilder;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.descriptions.common.ControllerResolver;
import org.jboss.as.controller.operations.validation.ParametersValidator;
import org.jboss.as.controller.operations.validation.StringLengthValidator;
import org.jboss.as.controller.registry.AttributeAccess;
import org.jboss.dmr.ModelNode;
/**
* {@link org.jboss.as.controller.OperationStepHandler} writing a single attribute. The required request parameter "name" represents the attribute name.
*
* @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
*/
public class WriteAttributeHandler implements OperationStepHandler {
public static final OperationDefinition DEFINITION = new SimpleOperationDefinitionBuilder(ModelDescriptionConstants.WRITE_ATTRIBUTE_OPERATION, ControllerResolver.getResolver("global"))
.setParameters(NAME, VALUE)
.setRuntimeOnly()
.build();
public static final OperationStepHandler INSTANCE = new WriteAttributeHandler();
private ParametersValidator nameValidator = new ParametersValidator();
WriteAttributeHandler() {
nameValidator.registerValidator(GlobalOperationHandlers.NAME.getName(), new StringLengthValidator(1));
}
@Override
public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
nameValidator.validate(operation);
final String attributeName = operation.require(GlobalOperationHandlers.NAME.getName()).asString();
final AttributeAccess attributeAccess = context.getResourceRegistration().getAttributeAccess(PathAddress.EMPTY_ADDRESS, attributeName);
if (attributeAccess == null) {
throw new OperationFailedException(new ModelNode().set(MESSAGES.unknownAttribute(attributeName)));
} else if (attributeAccess.getAccessType() != AttributeAccess.AccessType.READ_WRITE) {
throw new OperationFailedException(new ModelNode().set(MESSAGES.attributeNotWritable(attributeName)));
} else {
OperationStepHandler handler = attributeAccess.getWriteHandler();
ClassLoader oldTccl = SecurityActions.setThreadContextClassLoader(handler.getClass());
try {
handler.execute(context, operation);
} finally {
SecurityActions.setThreadContextClassLoader(oldTccl);
}
}
}
}