ntpa/Ntp.Analyzer.Import/NtpqPeerImporter.cs

110 lines
4.0 KiB
C#

//
// Copyright (c) 2013-2017 Carsten Sonne Larsen <cs@innolan.net>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using Ntp.Analyzer.Objects;
using Ntp.Common.Log;
namespace Ntp.Analyzer.Import
{
/// <summary>
/// Ntpq mapper parses status importLines from ntpq into objects.
/// </summary>
public sealed class NtpqPeerImporter : Importer<AssociationEntry>
{
internal NtpqPeerImporter(string address, int hostId, LogBase log)
: base(log)
{
this.address = address;
this.hostId = hostId;
}
private readonly string address;
private readonly int hostId;
protected override string Command => "ntpq";
protected override string Arguments => "-np " + address;
protected override string ErrorMessage => LogMessage.ImportPeerError;
protected override void ReadFromStream()
{
// Skip header
Reader.ReadLine();
Reader.ReadLine();
while (Reader.Peek() != -1)
{
string line = Reader.ReadLine();
if (string.IsNullOrWhiteSpace(line))
continue;
var entry = ParseLine(line);
Entries.Add(entry);
}
}
private static int CalcLastPoll(string line)
{
string lastPollString = line.Substring(38, 4);
char lastPollUnit = lastPollString.Substring(lastPollString.Length - 1, 1)[0];
string lastPollValue = lastPollString.Substring(0, lastPollString.Length - 1).Trim();
switch (lastPollUnit)
{
case 'm':
return Convert.ToInt32(lastPollValue)*60;
case 'h':
return Convert.ToInt32(lastPollValue)*60*60;
case 'd':
return Convert.ToInt32(lastPollValue)*60*60*24;
case '-':
return -1;
default:
return Convert.ToInt32(lastPollString);
}
}
private AssociationEntry ParseLine(string line)
{
char state = line[0];
string remote = line.Substring(1, 16).Trim();
string refid = line.Substring(17, 16).Trim();
int stratus = Convert.ToInt32(line.Substring(33, 2).Trim());
char t = line[36];
int lastPoll = CalcLastPoll(line);
int pollFrequency = Convert.ToInt32(line.Substring(43, 4).Trim());
int reach = Convert.ToInt32(line.Substring(49, 3).Trim());
double delay = Convert.ToDouble(line.Substring(53, 8).Trim());
double offset = Convert.ToDouble(line.Substring(61, 9).Trim());
double jitter = Convert.ToDouble(line.Substring(70, 8).Trim());
var entry = new AssociationEntry(
hostId, state, remote, refid, stratus, t,
lastPoll, pollFrequency, reach, delay, offset, jitter);
return entry;
}
}
}