// /**
//  * File: Hostalive.cs
//  * Author: haraldwolff
//  *
//  * This file and it's content is copyrighted by the Author and / or copyright holder.
//  * Any use wihtout proper permission is illegal and may lead to legal actions.
//  *
//  *
//  **/
using System;
using ln.types;
using ln.skyscanner.entities;
using ln.perfdb;
using System.Net.NetworkInformation;
using ln.logging;
using ln.perfdb.storage;
namespace ln.skyscanner.check
{
    public class Hostalive : Check
    {
        public static String CalcCheckName(Node host)
        {
            return String.Format("hostalive-{0}", host.PrimaryIP.ToString());
        }


        public Node Host;

        public Hostalive(Node node)
            :base(CalcCheckName(node))
        {
            Host = node;
        }

        public override void CheckImplementation(IPerfFileProvider perfProvider)
        {
            Ping ping = new Ping();
            long roundTripTime = 0;
            int success = 0;
            int n;

            for (n = 0; n < 4; n++)
            {
                PingReply reply = ping.Send(Host.PrimaryIP, 250);
                if (reply.Status == IPStatus.Success)
                {
                    success++;
                    roundTripTime += reply.RoundtripTime;
                }
            }

            float fSuccess = (float)success / (float)n;

            PerfFile pfSuccess = perfProvider.GetPerfFile(GetPerfName("LOSS"));
            pfSuccess.Write(new PerfValue(fSuccess));

            if (success > 0)
            {
                roundTripTime /= success;
                Logging.Log(LogLevel.INFO, "HOSTALIVE: IP {0} reachable ({1}/10) {2}ms", Host.PrimaryIP, success, roundTripTime);

                PerfFile pfRoundTrip = perfProvider.GetPerfFile(GetPerfName("RTA"));
                pfRoundTrip.Write(new PerfValue(roundTripTime));
            }
            else
            {
                Logging.Log(LogLevel.INFO, "HOSTALIVE: IP {0} unreachable", Host.PrimaryIP);
            }

        }
    }
}