Mercurial > servermonitor

annotate ServerMonitor/Objects/Logger.cs @ 0:3e1a2131f897

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Initial commit. Ping check, scheduling, UI working. SSH check mostly working.
author Brad Greco <brad@bgreco.net>
date Mon, 31 Dec 2018 18:32:14 -0500
parents
children c1dffaac66fa
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0
3e1a2131f897 Initial commit. Ping check, scheduling, UI working. SSH check mostly working.
Brad Greco <brad@bgreco.net>
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1 using System;
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2 using System.Collections.Generic;
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3 using System.IO;
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4 using System.Linq;
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5 using System.Reflection;
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6 using System.Text;
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7 using System.Threading.Tasks;
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8
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9 namespace ServerMonitorApp
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10 {
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11 public class Logger
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12 {
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13 private const int logVersion = 1;
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14 private readonly string logFile;
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15
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16 public Logger(string file)
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17 {
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18 logFile = file;
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19 }
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20
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21 public async void Log(string logString)
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22 {
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23 if (!File.Exists(logFile))
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24 logString = "Server Monitor log version " + logVersion + Environment.NewLine + logString;
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25 using (FileStream stream = new FileStream(logFile, FileMode.Append, FileAccess.Write, FileShare.Read, 4096, true))
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26 using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF8))
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27 {
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28 await writer.WriteLineAsync(logString);
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29 }
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30 }
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31
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32 public void Log(CheckResult result)
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33 {
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34 Log(result.ToLogString());
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35 }
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36
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37 public IList<CheckResult> Read(Server server)
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38 {
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39 Dictionary<int, Check> checks = server.Checks.ToDictionary(c => c.Id);
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40 List<CheckResult> results = new List<CheckResult>();
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41 using (FileStream stream = new FileStream(logFile, FileMode.Open, FileAccess.Read, FileShare.Read))
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42 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
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43 {
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44 while (true)
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45 {
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46 try
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47 {
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48 string line = reader.ReadLine();
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49 if (line == null)
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50 break;
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51 if (int.TryParse(line.Substring(0, 5), out int id) && checks.TryGetValue(id, out Check check))
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52 {
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53 results.Add(CheckResult.FromLogString(check, line));
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54 }
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55 }
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56 catch (Exception) { }
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57 }
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58 }
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59 results.Reverse();
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60 return results;
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61 }
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62 }
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63 }