/*
 *
 *  Copyright 2012 Netflix, Inc.
 *
 *     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.netflix.simianarmy.aws.janitor.rule.asg;

import com.netflix.simianarmy.Resource;

/**
 * The interface is for checking whether an ASG has any active instance.
 */
public interface ASGInstanceValidator {
    /**
     * Checks whether an ASG resource contains any active instances.
     * @param resource the ASG resource
     * @return true if the ASG contains any active instances, false otherwise.
     */
    boolean hasActiveInstance(Resource resource);
}