Define APIs for loading rules

/*

 * 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.engine;

import java.util.ArrayList;

import java.util.List;

/**

 * A helper class for loading rules to the rule evaluation engine.

 *

 * <p>Expose fine-grained APIs for loading rules to be passed to the rule evaluation engine.

 *

 * <p>It supports:

 * <ul>

 *     <li>Loading rules based on some keys, such as PACKAGE_NAME and APP_CERT.</li>

 * </ul>

 *

 * <p>It does NOT support:

 * <ul>

 *     <li>Loading the list of all rules.</li>

 *     <li>Merging rules resulting from different APIs.</li>

 * </ul>

 */

final class RuleLoader {

    List<String> loadRulesByPackageName(String packageName) {

        // TODO: Add logic based on rule storage.

        return new ArrayList<>();

    }

    List<String> loadRulesByAppCertificate(String appCertificate) {

        // TODO: Add logic based on rule storage.

        return new ArrayList<>();

    }

    List<String> loadRulesByInstallerName(String installerName) {

        // TODO: Add logic based on rule storage.

        return new ArrayList<>();

    }

    List<String> loadRulesByInstallerCertificate(String installerCertificate) {

        // TODO: Add logic based on rule storage.

        return new ArrayList<>();

    }

}