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* 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.ModCluster;
import io.undertow.server.handlers.proxy.mod_cluster.ModClusterStatus;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.registry.PlaceholderResource;
import org.jboss.as.controller.registry.Resource;
import org.jboss.dmr.ModelNode;
import org.wildfly.extension.undertow.Constants;
import org.wildfly.extension.undertow.logging.UndertowLogger;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Set;
import static org.wildfly.extension.undertow.Constants.LOAD_BALANCING_GROUP;
import static org.wildfly.extension.undertow.Constants.NODE;
public class ModClusterBalancerResource implements Resource.ResourceEntry {
private final String name;
private final String modClusterName;
private ModelNode model = new ModelNode();
public ModClusterBalancerResource(String name, String modClusterName) {
this.name = name;
this.modClusterName = modClusterName;
}
@Override
public ModelNode getModel() {
return model;
}
@Override
public void writeModel(final ModelNode newModel) {
this.model = newModel;
}
@Override
public boolean isModelDefined() {
return true;
}
@Override
public boolean hasChild(final PathElement element) {
if (NODE.equals(element.getKey())) {
return getChildrenNames(NODE).contains(element.getValue());
} else if (LOAD_BALANCING_GROUP.equals(element.getKey())) {
return getChildrenNames(LOAD_BALANCING_GROUP).contains(element.getValue());
}
return false;
}
@Override
public Resource getChild(final PathElement element) {
if (NODE.equals(element.getKey())) {
if (getChildrenNames(NODE).contains(element.getValue())) {
return new ModClusterNodeResource(element.getValue(), this.name, modClusterName);
}
return null;
} else if (LOAD_BALANCING_GROUP.equals(element.getKey())) {
if (getChildrenNames(LOAD_BALANCING_GROUP).contains(element.getValue())) {
return new ModClusterNodeResource(element.getValue(), this.name, modClusterName);
}
return null;
}
return null;
}
@Override
public Resource requireChild(final PathElement element) {
if (NODE.equals(element.getKey())) {
if (getChildrenNames(NODE).contains(element.getValue())) {
return new ModClusterNodeResource(element.getValue(), this.name, modClusterName);
}
throw new NoSuchResourceException(element);
} else if (LOAD_BALANCING_GROUP.equals(element.getKey())) {
if (getChildrenNames(LOAD_BALANCING_GROUP).contains(element.getValue())) {
return new ModClusterNodeResource(element.getValue(), this.name, modClusterName);
}
throw new NoSuchResourceException(element);
}
throw new NoSuchResourceException(element);
}
@Override
public boolean hasChildren(final String childType) {
if (NODE.equals(childType)) {
return !getChildrenNames(NODE).isEmpty();
} else if (LOAD_BALANCING_GROUP.equals(childType)) {
return !getChildrenNames(LOAD_BALANCING_GROUP).isEmpty();
}
return false;
}
@Override
public Resource navigate(final PathAddress address) {
final String element = address.getElement(0).getKey();
if (address.size() > 0 && (NODE.equals(element) || LOAD_BALANCING_GROUP.equals(element))) {
final Resource subResource = requireChild(address.getElement(0));
if(address.size() == 1) {
return subResource;
} else {
return subResource.navigate(address.subAddress(1));
}
}
throw new NoSuchResourceException(address.getElement(0));
}
@Override
public Set<String> getChildTypes() {
return Collections.singleton(NODE);
}
@Override
public Set<String> getChildrenNames(final String childType) {
if (NODE.equals(childType)) {
ModClusterService service = ModClusterResource.service(modClusterName);
if (service == null) {
return Collections.emptySet();
}
ModCluster modCluster = service.getModCluster();
ModClusterStatus status = modCluster.getController().getStatus();
final Set<String> result = new LinkedHashSet<>();
ModClusterStatus.LoadBalancer balancer = status.getLoadBalancer(this.name);
for (ModClusterStatus.Node node : balancer.getNodes()) {
result.add(node.getName());
}
return result;
} else if(LOAD_BALANCING_GROUP.equals(childType)) {
ModClusterService service = ModClusterResource.service(modClusterName);
if (service == null) {
return Collections.emptySet();
}
ModCluster modCluster = service.getModCluster();
ModClusterStatus status = modCluster.getController().getStatus();
final Set<String> result = new LinkedHashSet<>();
ModClusterStatus.LoadBalancer balancer = status.getLoadBalancer(this.name);
for (ModClusterStatus.Node node : balancer.getNodes()) {
result.add(node.getDomain());
}
return result;
}
return null;
}
@Override
public Set<ResourceEntry> getChildren(final String childType) {
if (NODE.equals(childType)) {
final Set<String> names = getChildrenNames(childType);
final Set<ResourceEntry> result = new LinkedHashSet<>(names.size());
for (String name : names) {
result.add(new ModClusterNodeResource(name, this.name, modClusterName));
}
return result;
} else if(LOAD_BALANCING_GROUP.equals(childType)) {
final Set<String> names = getChildrenNames(childType);
final Set<ResourceEntry> result = new LinkedHashSet<>(names.size());
for (String name : names) {
result.add(new PlaceholderResource.PlaceholderResourceEntry(PathElement.pathElement(LOAD_BALANCING_GROUP, name)));
}
return result;
}
return Collections.emptySet();
}
@Override
public void registerChild(final PathElement address, final Resource resource) {
final String type = address.getKey();
throw UndertowLogger.ROOT_LOGGER.cannotRegisterResourceOfType(type);
}
@Override
public void registerChild(PathElement address, int index, Resource resource) {
final String type = address.getKey();
throw UndertowLogger.ROOT_LOGGER.cannotRegisterResourceOfType(type);
}
@Override
public Resource removeChild(final PathElement address) {
final String type = address.getKey();
throw UndertowLogger.ROOT_LOGGER.cannotRemoveResourceOfType(type);
}
@Override
public boolean isRuntime() {
return true;
}
@Override
public boolean isProxy() {
return false;
}
@Override
public Set<String> getOrderedChildTypes() {
return Collections.emptySet();
}
@Override
public Resource clone() {
return new ModClusterBalancerResource(name, modClusterName);
}
@Override
public String getName() {
return name;
}
@Override
public PathElement getPathElement() {
return PathElement.pathElement(Constants.BALANCER, name);
}
}