Merge "Create evaluation engine outcome"

/*

 * Copyright (C) 2019 The Android Open Source Project

 *

 * 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.

 */

package com.android.server.integrity.model;

/**

 * A class encapsulating the result from the evaluation engine after evaluating rules against app

 * install metadata.

 *

 * <p>It contains the outcome effect (whether to allow or block the install), and the rule causing

 * that effect.

 */

public final class EvaluationOutcome {

    public enum Effect {

        ALLOW,

        DENY

    }

    private final Effect mEffect;

    private final Rule mRule;

    private EvaluationOutcome(Effect effect, Rule rule) {

        this.mEffect = effect;

        this.mRule = rule;

    }

    public Effect getEffect() {

        return mEffect;

    }

    public Rule getRule() {

        return mRule;

    }

    /**

     * Create an ALLOW evaluation outcome.

     *

     * @return An evaluation outcome with ALLOW effect and empty rule.

     */

    public static EvaluationOutcome allow() {

        return new EvaluationOutcome(Effect.ALLOW, Rule.EMPTY);

    }

    /**

     * Create a DENY evaluation outcome.

     *

     * @param rule Rule causing the DENY effect.

     * @return An evaluation outcome with DENY effect and rule causing that effect.

     */

    public static EvaluationOutcome deny(Rule rule) {

        return new EvaluationOutcome(Effect.DENY, rule);

    }

}

 */

public final class Rule {

    enum Effect {

    public enum Effect {

        DENY

    }