org.jboss.as.clustering.controller.CompositeServiceBuilder Maven / Gradle / Ivy

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The code in this module is not explicitly related to clustering, but rather contains resuable code used by clustering modules and any modules that integrate with clustering.

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/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.jboss.as.clustering.controller;

import java.util.LinkedList;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Supplier;

import org.jboss.msc.Service;
import org.jboss.msc.service.DelegatingServiceBuilder;
import org.jboss.msc.service.LifecycleListener;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceController;
import org.jboss.msc.service.ServiceName;

/**
 * A {@link ServiceBuilder} facade for installing a set of {@link ServiceBuilder} instances.
 * @author Paul Ferraro
 */
public class CompositeServiceBuilder extends DelegatingServiceBuilder {

    private final Iterable> builders;

    public CompositeServiceBuilder(Iterable> builders) {
        super(null);
        this.builders = builders;
    }

    @Override
    public ServiceBuilder setInitialMode(ServiceController.Mode mode) {
        for (ServiceBuilder builder : this.builders) {
            builder.setInitialMode(mode);
        }
        return this;
    }

    @Override
    public ServiceBuilder addListener(LifecycleListener listener) {
        for (ServiceBuilder builder : this.builders) {
            builder.addListener(listener);
        }
        return this;
    }

    @SuppressWarnings("unchecked")
    @Override
    public ServiceController install() {
        List> controllers = new LinkedList<>();
        for (ServiceBuilder builder : this.builders) {
            controllers.add(builder.install());
        }
        return !controllers.isEmpty() ? (ServiceController) controllers.get(0) : null;
    }

    @Override
    public  Supplier requires(ServiceName name) {
        throw new UnsupportedOperationException();
    }

    @Override
    public  Consumer provides(ServiceName... names) {
        throw new UnsupportedOperationException();
    }

    @Override
    public ServiceBuilder setInstance(Service service) {
        throw new UnsupportedOperationException();
    }
}