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2
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1 using System;
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2 using System.Collections.Generic;
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3 using System.ComponentModel;
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4 using System.Linq;
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5 using System.Text;
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6 using System.Threading.Tasks;
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7
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8 namespace ServerMonitorApp
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9 {
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10 [DisplayName("Disk space check"), Description("Check the remaining free disk space"), DisplayWeight(11)]
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11 public class DiskSpaceCheck : SshCheck
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12 {
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4
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13 public override string Command => string.Format(base.Command, Device);
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3
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14
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2
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15 public string Device { get; set; }
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16
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17 public double MinFreeSpace { get; set; }
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18
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19 public FreeSpaceUnits FreeSpaceUnits { get; set; }
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20
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21 public DiskSpaceCheck()
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22 {
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3
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23 //Command = "df -P -k {0} | awk 'NR>1' | tr -s ' ' | cut -d ' ' -f 4,5";
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24 Command = "df -P -k {0}";
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2
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25 CheckExitCode = true;
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26 ExitCode = 0;
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27 }
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28
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29 protected override List<CheckResult> ProcessCommandResult(string output, int exitCode)
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30 {
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31 List<CheckResult> results = base.ProcessCommandResult(output, exitCode);
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4
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32 if (results.Any(r => r.Failed))
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3
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33 return results;
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34
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35 List<string> lines = output.Split('\n').ToList();
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36 lines.RemoveAt(0);
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37 if (lines.Count > 1)
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2
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38 {
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3
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39 results.Add(Fail("df output was more than one line: " + string.Join("\n", lines)));
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2
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40 }
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41 else
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42 {
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3
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43 string[] tokens = lines[0].Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
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2
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44 if (FreeSpaceUnits == FreeSpaceUnits.percent)
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45 {
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3
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46 if (int.TryParse(tokens[4].Replace("%", ""), out int percent))
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2
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47 {
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48 percent = 100 - percent;
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49 string message = string.Format("Free disk space is {0}%", percent);
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50 if (percent < MinFreeSpace)
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51 results.Add(Fail(message));
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52 else
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53 results.Add(Pass(message));
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54 }
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55 else
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56 {
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3
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57 results.Add(Fail("Unable to parse df output as integer: " + tokens[4].Replace("%", "")));
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2
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58 }
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59 }
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60 else
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61 {
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3
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62 if (int.TryParse(tokens[3], out int freeSpace))
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2
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63 {
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64 freeSpace /= 1024;
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65 if (FreeSpaceUnits == FreeSpaceUnits.GB)
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66 freeSpace /= 1024;
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67 string message = string.Format("Free disk space is {0} {1}", freeSpace, FreeSpaceUnits);
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68 if (freeSpace < MinFreeSpace)
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69 results.Add(Fail(message));
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70 else
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71 results.Add(Pass(message));
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72 }
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73 else
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74 {
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3
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75 results.Add(Fail("Unable to parse df output as integer: " + tokens[3]));
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2
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76 }
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77 }
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78 }
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79 return results;
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80 }
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81
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82 public override string Validate(bool saving = true)
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83 {
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84 string message = base.Validate();
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85 if (Device.IsNullOrEmpty())
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86 message += "Device is required." + Environment.NewLine;
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87 if (MinFreeSpace <= 0)
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88 message += "Free space must be greater than 0." + Environment.NewLine;
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89 else if (FreeSpaceUnits == FreeSpaceUnits.percent && MinFreeSpace > 100)
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90 message += "Free space percent must be between 0 and 100." + Environment.NewLine;
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91 return message;
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92 }
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93 }
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94
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95 public enum FreeSpaceUnits { MB = 0, GB = 1, percent = 2 }
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3
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96 } |
