org.wildfly.clustering.server.infinispan.scheduler.Scheduler Maven / Gradle / Ivy

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

package org.wildfly.clustering.server.infinispan.scheduler;

import java.util.function.Supplier;

/**
 * Scheduler that does not require predetermined entry meta data.
 * @author Paul Ferraro
 * @param  the scheduled entry identifier type
 * @param  the scheduled entry metadata type
 */
public interface Scheduler extends org.wildfly.clustering.server.scheduler.Scheduler {

	/**
	 * Schedules an entry for the specified identifier.
	 * @param id a scheduled entry identifier
	 */
	void schedule(I id);

	/**
	 * Returns an inactive scheduler instance.
	 * @param  the scheduled object identifier type
	 * @param  the scheduled object metadata type
	 * @return an inactive scheduler instance.
	 */
	static  Scheduler inactive() {
		return new InactiveScheduler<>();
	}

	/**
	 * Returns a scheduler that delegates to a scheduler reference.
	 * @param reference a scheduler reference
	 * @param  the scheduled object identifier type
	 * @param  the scheduled object metadata type
	 * @return a scheduler that delegates to a scheduler reference.
	 */
	static  Scheduler fromReference(Supplier> reference) {
		return new ReferenceScheduler<>(reference);
	}

	class InactiveScheduler extends org.wildfly.clustering.server.scheduler.Scheduler.InactiveScheduler implements Scheduler {
		@Override
		public void schedule(I id) {
		}
	}

	class ReferenceScheduler extends org.wildfly.clustering.server.scheduler.Scheduler.ReferenceScheduler implements Scheduler {
		private final Supplier> reference;

		ReferenceScheduler(Supplier> reference) {
			super(reference);
			this.reference = reference;
		}

		@Override
		public void schedule(I id) {
			this.reference.get().schedule(id);
		}
	}
}