org.jboss.as.clustering.naming.NamespaceContextExecutor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of wildfly-clustering-common Show documentation
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.
There is a newer version: 34.0.0.Final
Show newest version
/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2019, 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.jboss.as.clustering.naming;

import java.util.concurrent.Callable;
import java.util.function.Supplier;

import org.jboss.as.naming.context.NamespaceContextSelector;
import org.wildfly.clustering.context.ContextualExecutor;
import org.wildfly.common.function.ExceptionRunnable;
import org.wildfly.common.function.ExceptionSupplier;

/**
 * A contextual executor that applies namespace context that was active when this object was constructed.
 * @author Paul Ferraro
 */
public class NamespaceContextExecutor implements ContextualExecutor {

    private final NamespaceContextSelector selector = NamespaceContextSelector.getCurrentSelector();

    @Override
    public void execute(Runnable runner) {
        if (this.selector != null) {
            NamespaceContextSelector.pushCurrentSelector(this.selector);
        }
        try {
            runner.run();
        } finally {
            if (this.selector != null) {
                NamespaceContextSelector.popCurrentSelector();
            }
        }
    }

    @Override
    public  void execute(ExceptionRunnable runner) throws E {
        if (this.selector != null) {
            NamespaceContextSelector.pushCurrentSelector(this.selector);
        }
        try {
            runner.run();
        } finally {
            if (this.selector != null) {
                NamespaceContextSelector.popCurrentSelector();
            }
        }
    }

    @Override
    public  T execute(Callable caller) throws Exception {
        if (this.selector != null) {
            NamespaceContextSelector.pushCurrentSelector(this.selector);
        }
        try {
            return caller.call();
        } finally {
            if (this.selector != null) {
                NamespaceContextSelector.popCurrentSelector();
            }
        }
    }

    @Override
    public  T execute(Supplier supplier) {
        if (this.selector != null) {
            NamespaceContextSelector.pushCurrentSelector(this.selector);
        }
        try {
            return supplier.get();
        } finally {
            if (this.selector != null) {
                NamespaceContextSelector.popCurrentSelector();
            }
        }
    }

    @Override
    public  T execute(ExceptionSupplier supplier) throws E {
        if (this.selector != null) {
            NamespaceContextSelector.pushCurrentSelector(this.selector);
        }
        try {
            return supplier.get();
        } finally {
            if (this.selector != null) {
                NamespaceContextSelector.popCurrentSelector();
            }
        }
    }

    @Override
    public Runnable contextualize(Runnable runner) {
        return (this.selector != null) ? ContextualExecutor.super.contextualize(runner) : runner;
    }

    @Override
    public  ExceptionRunnable contextualize(ExceptionRunnable runner) {
        return (this.selector != null) ? ContextualExecutor.super.contextualize(runner) : runner;
    }

    @Override
    public  Callable contextualize(Callable caller) {
        return (this.selector != null) ? ContextualExecutor.super.contextualize(caller) : caller;
    }

    @Override
    public  Supplier contextualize(Supplier supplier) {
        return (this.selector != null) ? ContextualExecutor.super.contextualize(supplier) : supplier;
    }

    @Override
    public  ExceptionSupplier contextualize(ExceptionSupplier supplier) {
        return (this.selector != null) ? ContextualExecutor.super.contextualize(supplier) : supplier;
    }
}