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/*******************************************************************************
 * ============LICENSE_START====================================================
 * * org.onap.aaf
 * * ===========================================================================
 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * * ===========================================================================
 * * Licensed under the Apache License, Version 2.0 (the "License");
 * * you may not use this file except in compliance with the License.
 * * You may obtain a copy of the License at
 * * 
 *  *      http://www.apache.org/licenses/LICENSE-2.0
 * * 
 *  * Unless required by applicable law or agreed to in writing, software
 * * distributed under the License is distributed on an "AS IS" BASIS,
 * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * * See the License for the specific language governing permissions and
 * * limitations under the License.
 * * ============LICENSE_END====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package org.onap.aaf.cadi.taf;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.onap.aaf.cadi.CachedPrincipal;
import org.onap.aaf.cadi.Taf;
import org.onap.aaf.cadi.CachedPrincipal.Resp;


/**
 * This TAF is set at the very beginning of Filters and Valves so that if any configuration issues hit while
 * starting, the default behavior is to shut down traffic rather than leaving an open hole
 * 
 *
 */
public class NullTaf implements Taf, HttpTaf {
	// Singleton Pattern
	public NullTaf() {}

	/**
	 * validate 
	 * 
	 * Always Respond with a NullTafResp, which declares it is unauthenticated, and unauthorized
	 */
	public TafResp validate(LifeForm reading, String... info) {
		return NullTafResp.singleton();
	}

	/**
	 * validate 
	 * 
	 * Always Respond with a NullTafResp, which declares it is unauthenticated, and unauthorized
	 */
	public TafResp validate(LifeForm reading, HttpServletRequest req, HttpServletResponse resp) {
		return NullTafResp.singleton();
	}

	public Resp revalidate(CachedPrincipal prin) {
		return Resp.NOT_MINE;
	}
}