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comparison ServerMonitor/Objects/Checks/FileCheck.cs @ 3:96f0b028176d

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File check
author Brad Greco <brad@bgreco.net>
date Fri, 11 Jan 2019 22:34:18 -0500
parents
children 3142e52cbe69
comparison
equal deleted inserted replaced
2:453ecc1ed9ea 3:96f0b028176d
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Linq;
5 using System.Text;
6 using System.Text.RegularExpressions;
7 using System.Threading.Tasks;
8
9 namespace ServerMonitorApp
10 {
11 [DisplayName("File check"), Description("Check file size or modified time"), DisplayWeight(12)]
12 public class FileCheck : SshCheck
13 {
14 public override string Command { get => string.Format(base.Command, Regex.Replace(File, "^~", "$HOME")); }
15
16 public string File { get; set; }
17
18 public bool CheckFileSize { get; set; }
19
20 public bool FileSizeLessThan { get; set; }
21
22 public double FileSize { get; set; }
23
24 public double FileSizeInSelectedUnits
25 {
26 get { return FileSize / Math.Pow(1024, (double)FileSizeUnits); }
27 set { FileSize = value * Math.Pow(1024, (double)FileSizeUnits); }
28 }
29
30 public SizeUnits FileSizeUnits { get; set; }
31
32 public bool CheckDateModified { get; set; }
33
34 public bool DateModifiedOlderThan { get; set; }
35
36 public double DateModified { get; set; }
37
38 public TimeUnits DateModifiedUnits { get; set; }
39
40 public FileCheck()
41 {
42 Command = "export TIME_STYLE=long-iso; ls -l \"{0}\"";
43 //Command = "export TIME_STYLE=long-iso; ls -l \"{0}\" | tr -s ' ' | cut -d ' ' -f 5,6,7";
44 CheckExitCode = true;
45 ExitCode = 0;
46 }
47
48 protected override List<CheckResult> ProcessCommandResult(string output, int exitCode)
49 {
50 List<CheckResult> results = base.ProcessCommandResult(output, exitCode);
51 if (results.Any(r => r.CheckStatus != CheckStatus.Success))
52 return results;
53
54 if (output.Split('\n').Length > 1)
55 {
56 results.Add(Fail("ls output was more than one line: " + output));
57 }
58 else
59 {
60 string[] tokens = output.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
61 if (CheckFileSize)
62 {
63 if (int.TryParse(tokens[4], out int bytes))
64 {
65 string message = string.Format("File size is {0} {1}", bytes / Math.Pow(1024, (double)FileSizeUnits), FileSizeUnits);
66 if ((bytes < FileSize && FileSizeLessThan) || (bytes > FileSize && !FileSizeLessThan))
67 results.Add(Pass(message));
68 else
69 results.Add(Fail(message));
70 }
71 else
72 {
73 results.Add(Fail("Unable to parse ls output as integer: " + tokens[4]));
74 }
75 }
76 if (CheckDateModified)
77 {
78 string dateString = tokens[5] + " " + tokens[6];
79 if (DateTime.TryParse(dateString, out DateTime modified))
80 {
81 string message = string.Format("Last modified date is {0}", modified);
82 TimeSpan age = DateTime.Now.Subtract(modified);
83 double ageCompare = DateModifiedUnits == TimeUnits.Minute ? age.TotalMinutes :
84 DateModifiedUnits == TimeUnits.Hour ? age.TotalHours :
85 age.TotalDays;
86 if ((ageCompare > DateModified && DateModifiedOlderThan) || (ageCompare < DateModified && !DateModifiedOlderThan))
87 results.Add(Pass(message));
88 else
89 results.Add(Fail(message));
90 }
91 else
92 {
93 results.Add(Fail("Unable to parse ls output as date: " + dateString));
94 }
95 }
96 }
97 return results;
98 }
99
100 public override string Validate(bool saving = true)
101 {
102 string message = base.Validate();
103 if (File.IsNullOrEmpty())
104 message += "File is required." + Environment.NewLine;
105 if (!CheckFileSize && !CheckDateModified)
106 message += "At least one check must be enabled." + Environment.NewLine;
107 if (CheckFileSize && FileSize <= 0)
108 message += "File size must be greater than 0." + Environment.NewLine;
109 if (CheckDateModified && DateModified <= 0)
110 message += "Date modified must be greater than 0." + Environment.NewLine;
111 return message;
112 }
113 }
114 }