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 * JBoss, Home of Professional Open Source
 * Copyright 2012 Red Hat Inc. and/or its affiliates and other contributors
 * as indicated by the @author tags. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * 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,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */

package org.jboss.as.clustering.infinispan.subsystem;

import java.util.function.Function;

import org.infinispan.Cache;
import org.jboss.as.clustering.controller.BinaryCapabilityNameResolver;
import org.jboss.as.clustering.controller.Metric;
import org.jboss.as.clustering.controller.MetricExecutor;
import org.jboss.as.clustering.controller.MetricFunction;
import org.jboss.as.clustering.controller.FunctionExecutor;
import org.jboss.as.clustering.controller.FunctionExecutorRegistry;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.dmr.ModelNode;
import org.jboss.msc.service.ServiceName;
import org.wildfly.clustering.infinispan.service.InfinispanCacheRequirement;

/**
 * @author Paul Ferraro
 */
public abstract class CacheMetricExecutor<C> implements MetricExecutor<C>, Function<Cache<?, ?>, C> {

    private final FunctionExecutorRegistry<Cache<?, ?>> executors;
    private final BinaryCapabilityNameResolver resolver;

    protected CacheMetricExecutor(FunctionExecutorRegistry<Cache<?, ?>> executors) {
        this(executors, BinaryCapabilityNameResolver.PARENT_CHILD);
    }

    protected CacheMetricExecutor(FunctionExecutorRegistry<Cache<?, ?>> executors, BinaryCapabilityNameResolver resolver) {
        this.executors = executors;
        this.resolver = resolver;
    }

    @Override
    public ModelNode execute(OperationContext context, Metric<C> metric) throws OperationFailedException {
        ServiceName name = InfinispanCacheRequirement.CACHE.getServiceName(context, this.resolver);
        FunctionExecutor<Cache<?, ?>> executor = this.executors.get(name);
        return (executor != null) ? executor.execute(new MetricFunction<>(this, metric)) : null;
    }
}
