/*
* JBoss, Home of Professional Open Source.
* Copyright 2017, 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.undertow.filters;
import io.undertow.server.handlers.proxy.mod_cluster.ModClusterStatus;
import org.jboss.as.controller.AttributeDefinition;
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.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.SimpleOperationDefinition;
import org.jboss.as.controller.SimpleResourceDefinition;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;
import org.wildfly.extension.undertow.Constants;
import org.wildfly.extension.undertow.UndertowExtension;
/**
* Runtime representation of a mod_cluster context
*
* @author Stuart Douglas
*/
class ModClusterContextDefinition extends SimpleResourceDefinition {
public static ModClusterContextDefinition INSTANCE = new ModClusterContextDefinition();
private static final AttributeDefinition STATUS = new SimpleAttributeDefinitionBuilder(Constants.STATUS, ModelType.STRING)
.setRequired(false)
.setStorageRuntime()
.build();
private static final AttributeDefinition REQUESTS = new SimpleAttributeDefinitionBuilder(Constants.REQUESTS, ModelType.INT)
.setRequired(false)
.setStorageRuntime()
.build();
private final OperationDefinition ENABLE = new SimpleOperationDefinition(Constants.ENABLE, getResourceDescriptionResolver());
private final OperationDefinition DISABLE = new SimpleOperationDefinition(Constants.DISABLE, getResourceDescriptionResolver());
private final OperationDefinition STOP = new SimpleOperationDefinition(Constants.STOP, getResourceDescriptionResolver());
private ModClusterContextDefinition() {
super(new Parameters(UndertowExtension.CONTEXT, UndertowExtension.getResolver("handler", "mod-cluster", "balancer", "node", "context"))
.setRuntime());
}
@Override
public void registerAttributes(ManagementResourceRegistration resourceRegistration) {
super.registerAttributes(resourceRegistration);
resourceRegistration.registerReadOnlyAttribute(STATUS, new AbstractContextOperation() {
@Override
public void handleContext(OperationContext context, ModClusterStatus.Context ctx, ModelNode operation) throws OperationFailedException {
context.getResult().set(new ModelNode(ctx.isEnabled() ? "enabled" : "disabled"));
}
});
resourceRegistration.registerReadOnlyAttribute(REQUESTS, new AbstractContextOperation() {
@Override
public void handleContext(OperationContext context, ModClusterStatus.Context ctx, ModelNode operation) throws OperationFailedException {
context.getResult().set(new ModelNode(ctx.getRequests()));
}
});
}
@Override
public void registerOperations(ManagementResourceRegistration resourceRegistration) {
resourceRegistration.registerOperationHandler(ENABLE, new AbstractContextOperation() {
@Override
protected void handleContext(OperationContext context, ModClusterStatus.Context ctx, ModelNode operation) throws OperationFailedException {
ctx.enable();
}
});
resourceRegistration.registerOperationHandler(DISABLE, new AbstractContextOperation() {
@Override
protected void handleContext(OperationContext context, ModClusterStatus.Context ctx, ModelNode operation) throws OperationFailedException {
ctx.disable();
}
});
resourceRegistration.registerOperationHandler(STOP, new AbstractContextOperation() {
@Override
protected void handleContext(OperationContext context, ModClusterStatus.Context ctx, ModelNode operation) throws OperationFailedException {
ctx.stop();
}
});
}
private abstract class AbstractContextOperation implements OperationStepHandler {
@Override
public final void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
PathAddress address = context.getCurrentAddress();
int current = address.size() - 1;
String contextName = address.getElement(current--).getValue();
String nodeName = address.getElement(current--).getValue();
String balancerName = address.getElement(current--).getValue();
String modClusterName = address.getElement(current--).getValue();
ModClusterService service = ModClusterResource.service(modClusterName);
if (service == null) {
context.getResult().set(new ModelNode());
context.completeStep(OperationContext.ResultHandler.NOOP_RESULT_HANDLER);
return;
}
ModClusterStatus.LoadBalancer balancer = service.getModCluster().getController().getStatus().getLoadBalancer(balancerName);
if (balancer == null) {
context.getResult().set(new ModelNode());
context.completeStep(OperationContext.ResultHandler.NOOP_RESULT_HANDLER);
return;
}
ModClusterStatus.Node node = balancer.getNode(nodeName);
if (node == null) {
context.getResult().set(new ModelNode());
context.completeStep(OperationContext.ResultHandler.NOOP_RESULT_HANDLER);
return;
}
ModClusterStatus.Context ctx = node.getContext(contextName);
if(ctx == null) {
context.getResult().set(new ModelNode());
context.completeStep(OperationContext.ResultHandler.NOOP_RESULT_HANDLER);
return;
}
handleContext(context, ctx, operation);
}
protected abstract void handleContext(OperationContext context, ModClusterStatus.Context ctx, ModelNode operation) throws OperationFailedException ;
}
}