org.jboss.as.cli.accesscontrol.BaseAccessRequirement Maven / Gradle / Ivy

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2013, 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.cli.accesscontrol;

import org.jboss.as.cli.CliEvent;
import org.jboss.as.cli.CliEventListener;
import org.jboss.as.cli.CommandContext;
import org.jboss.logging.Logger;


/**
 * @author Alexey Loubyansky
 *
 */
public abstract class BaseAccessRequirement implements AccessRequirement, CliEventListener {

    protected Logger log = Logger.getLogger(getClass());
    protected final boolean traceEnabled = log.isTraceEnabled();

    private Boolean satisfied;

    @Override
    public boolean isSatisfied(CommandContext ctx) {
        if(satisfied == null) {
            satisfied = checkAccess(ctx);
            if(traceEnabled) {
                log.trace(toString() + " " + satisfied);
            }
        }
        return satisfied;
    }

    @Override
    public void cliEvent(CliEvent event, CommandContext ctx) {
        if(event == CliEvent.DISCONNECTED) {
            satisfied = null;
            resetState();
        }
    }

    protected void resetState() {
    }

    protected abstract boolean checkAccess(CommandContext ctx);
}