/*
 * 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.addthis.hydra.util;


public class HealthCheckThread extends Thread {

    private HealthCheck healthCheck;
    private long pollingInterval;

    public HealthCheckThread(HealthCheck healthCheck, long pollingInterval, String threadName) {
        super(threadName);
        this.healthCheck = healthCheck;
        this.pollingInterval = pollingInterval;
    }

    @Override public void run() {
        while (true) {
            this.healthCheck.runCheck();
            trySleep(this.pollingInterval);
        }
    }

    private static void trySleep(long milliseconds) {
        try {
            Thread.sleep(milliseconds);
        } catch (Exception e) {
            // sleeping is hard
        }
    }
}