/* Copyright 2012 Google, 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 org.arbeitspferde.groningen.subject;
/**
* A means for determining whether an experimental subject is healthy.
*/
public interface HealthQuerier {
/**
* Wait for the subject to come online and mark itself as healthy.
*
* @return true if the subject is online and healthy within a given implementation-specific
* deadline; false otherwise.
*/
public boolean blockUntilHealthy(final Subject subject);
/**
* @return true if the subject is healthy; false otherwise.
*/
public boolean isHealthy(final Subject subject);
}