ChannelClusterBuilder.java example

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wildfly-master
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 * Lesser General Public License for more details.
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package org.jboss.as.clustering.jgroups.subsystem;

import static org.jboss.as.clustering.jgroups.subsystem.ChannelResourceDefinition.Attribute.CLUSTER;

import org.jboss.as.clustering.controller.CapabilityServiceNameProvider;
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.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.ImmediateValue;
import org.wildfly.clustering.service.Builder;

/**
 * Builds a service providing the cluster name of a channel.
 * @author Paul Ferraro
 */
public class ChannelClusterBuilder extends CapabilityServiceNameProvider implements ResourceServiceBuilder<String> {

    private final String name;

    private volatile String cluster;

    public ChannelClusterBuilder(PathAddress address) {
        super(ChannelResourceDefinition.Capability.JCHANNEL_CLUSTER, address);
        this.name = address.getLastElement().getValue();
    }

    @Override
    public Builder<String> configure(OperationContext context, ModelNode model) throws OperationFailedException {
        this.cluster = ModelNodes.optionalString(CLUSTER.resolveModelAttribute(context, model)).orElse(this.name);
        return this;
    }

    @Override
    public ServiceBuilder<String> build(ServiceTarget target) {
        return target.addService(this.getServiceName(), new ValueService<>(new ImmediateValue<>(this.cluster)));
    }
}