/*
* JBoss, Home of Professional Open Source.
* Copyright 2014, 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.wildfly.extension.requestcontroller;
import org.jboss.as.controller.AbstractWriteAttributeHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.PathAddress;
import org.jboss.dmr.ModelNode;
import org.jboss.msc.service.ServiceController;
/**
* Write handler for the max requests attribute
*
* @author Stuart Douglas
*/
class MaxRequestsWriteHandler extends AbstractWriteAttributeHandler<Void> {
private final AttributeDefinition attributeDefinition;
MaxRequestsWriteHandler(final AttributeDefinition attributeDefinition) {
super(attributeDefinition);
this.attributeDefinition = attributeDefinition;
}
@Override
protected boolean applyUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
ModelNode resolvedValue, ModelNode currentValue, HandbackHolder<Void> handbackHolder) throws OperationFailedException {
final ModelNode model = context.readResource(PathAddress.EMPTY_ADDRESS).getModel();
apply(context, model);
return false;
}
@Override
protected void revertUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
ModelNode valueToRestore, ModelNode valueToRevert, Void handback) throws OperationFailedException {
final ModelNode restored = context.readResource(PathAddress.EMPTY_ADDRESS).getModel().clone();
restored.get(attributeName).set(valueToRestore);
apply(context, restored);
}
private void apply(final OperationContext context, final ModelNode model) throws OperationFailedException {
ServiceController<?> serviceController = context.getServiceRegistry(false).getService(RequestController.SERVICE_NAME);
if(serviceController == null) {
return;
}
RequestController requestController = (RequestController) serviceController.getService().getValue();
final ModelNode modelNode = this.attributeDefinition.resolveModelAttribute(context, model);
if(!modelNode.isDefined()) {
requestController.setMaxRequestCount(-1);
} else {
requestController.setMaxRequestCount(modelNode.asInt());
}
}
}