/*
* JBoss, Home of Professional Open Source.
* Copyright 2015, 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.clustering.singleton;
import static org.wildfly.extension.clustering.singleton.ElectionPolicyResourceDefinition.Attribute.*;
import static org.wildfly.extension.clustering.singleton.ElectionPolicyResourceDefinition.Capability.*;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import org.jboss.as.clustering.controller.CapabilityServiceNameProvider;
import org.jboss.as.clustering.controller.CommonUnaryRequirement;
import org.jboss.as.clustering.controller.ResourceServiceBuilder;
import org.jboss.as.clustering.dmr.ModelNodes;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.network.OutboundSocketBinding;
import org.jboss.dmr.ModelNode;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceTarget;
import org.jboss.msc.service.ValueService;
import org.jboss.msc.value.Value;
import org.wildfly.clustering.service.Builder;
import org.wildfly.clustering.service.Dependency;
import org.wildfly.clustering.service.InjectedValueDependency;
import org.wildfly.clustering.singleton.SingletonElectionPolicy;
import org.wildfly.clustering.singleton.election.NamePreference;
import org.wildfly.clustering.singleton.election.Preference;
import org.wildfly.clustering.singleton.election.PreferredSingletonElectionPolicy;
import org.wildfly.extension.clustering.singleton.election.OutboundSocketBindingPreference;
/**
* Builds a service that provides an election policy.
* @author Paul Ferraro
*/
public abstract class ElectionPolicyBuilder extends CapabilityServiceNameProvider implements ResourceServiceBuilder<SingletonElectionPolicy>, Value<SingletonElectionPolicy> {
private final List<Preference> preferences = new CopyOnWriteArrayList<>();
private final List<Dependency> dependencies = new CopyOnWriteArrayList<>();
protected ElectionPolicyBuilder(PathAddress address) {
super(ELECTION_POLICY, address);
}
@Override
public ServiceBuilder<SingletonElectionPolicy> build(ServiceTarget target) {
Value<SingletonElectionPolicy> value = () -> this.preferences.isEmpty() ? this.getValue() : new PreferredSingletonElectionPolicy(this.getValue(), this.preferences);
ServiceBuilder<SingletonElectionPolicy> builder = target.addService(this.getServiceName(), new ValueService<>(value));
this.dependencies.forEach(dependency -> dependency.register(builder));
return builder;
}
@Override
public Builder<SingletonElectionPolicy> configure(OperationContext context, ModelNode model) throws OperationFailedException {
this.preferences.clear();
this.dependencies.clear();
ModelNodes.optionalList(SOCKET_BINDING_PREFERENCES.resolveModelAttribute(context, model)).ifPresent(bindings -> {
bindings.stream().map(ModelNode::asString).forEach(bindingName -> {
InjectedValueDependency<OutboundSocketBinding> binding = new InjectedValueDependency<>(CommonUnaryRequirement.OUTBOUND_SOCKET_BINDING.getServiceName(context, bindingName), OutboundSocketBinding.class);
this.preferences.add(new OutboundSocketBindingPreference(binding));
this.dependencies.add(binding);
});
});
ModelNodes.optionalList(NAME_PREFERENCES.resolveModelAttribute(context, model)).ifPresent(names -> {
names.stream().map(ModelNode::asString).forEach(name -> this.preferences.add(new NamePreference(name)));
});
return this;
}
}