tools/ExerciseFileSystem.cs

   1 //
   2 // ExerciseFileSystem.cs
   3 //
   4 // Copyright (C) 2005 Novell, Inc.
   5 //
   6
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining a copy
   9 // of this software and associated documentation files (the "Software"), to deal
  10 // in the Software without restriction, including without limitation the rights
  11 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 // copies of the Software, and to permit persons to whom the Software is
  13 // furnished to do so, subject to the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be included in all
  16 // copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24 // SOFTWARE.
  25 //
  26
  27 using System;
  28 using System.Collections;
  29 using System.IO;
  30 using System.Threading;
  31
  32 using CommandLineFu;
  33 using Beagle.Util;
  34
  35 class ExerciseFileSystemTool {
  36
  37         [Option (LongName="root")]
  38         static string root = null;
  39
  40         [Option (LongName="file-source")]
  41         static string file_source = null;
  42
  43         [Option (LongName="max-files")]
  44         static int max_files = 20;
  45
  46         [Option (LongName="max-directories")]
  47         static int max_directories = 5;
  48
  49         [Option (LongName="depth")]
  50         static int max_depth = 4;
  51
  52         [Option (LongName="action-count")]
  53         static int action_count = 0;
  54
  55         [Option (LongName="max-interval")]
  56         static int max_interval = 1000;
  57
  58         static Random random = new Random ();
  59
  60         static ArrayList all_directories = new ArrayList ();
  61         static ArrayList all_files = new ArrayList ();
  62
  63         static ArrayList available_source_files = null;
  64         static string GetRandomSourceFile ()
  65         {
  66                 if (file_source == null)
  67                         return null;
  68                 if (available_source_files == null) {
  69                         available_source_files = new ArrayList ();
  70                         DirectoryInfo dir = new DirectoryInfo (file_source);
  71                         foreach (FileInfo file in dir.GetFiles ()) {
  72                                 if (file.Name.StartsWith (".")
  73                                     || file.Name.EndsWith ("~")
  74                                     || (file.Name.StartsWith ("#") && file.Name.EndsWith ("#")))
  75                                         continue;
  76                                 available_source_files.Add (file.FullName);
  77                         }
  78                 }
  79                 if (available_source_files.Count == 0)
  80                         return null;
  81
  82                 return (string) available_source_files [random.Next (available_source_files.Count)];
  83         }
  84
  85         static int name_counter = 0;
  86         static string GetRandomName ()
  87         {
  88                 ++name_counter;
  89                 return name_counter.ToString ();
  90         }
  91
  92         static string CreateFile (string directory)
  93         {
  94                 string source_file = GetRandomSourceFile ();
  95                 string new_file = Path.Combine (directory, GetRandomName ());
  96
  97                 if (source_file != null) {
  98                         new_file += Path.GetExtension (source_file);
  99                         File.Copy (source_file, new_file);
 100                 } else {
 101                         File.Create (new_file).Close ();
 102                 }
 103
 104                 all_files.Add (new_file);
 105                 return new_file;
 106         }
 107
 108         static void CreateDirectories (string parent, int depth)
 109         {
 110                 string path = Path.Combine (parent, GetRandomName ());
 111                 Directory.CreateDirectory (path);
 112
 113                 all_directories.Add (path);
 114
 115                 int n_files = random.Next (max_files+1);
 116                 for (int i = 0; i < n_files; ++i)
 117                         CreateFile (path);
 118
 119                 if (depth < max_depth) {
 120                         int n_dirs = random.Next (max_directories+1);
 121                         if (depth == 0 && n_dirs == 0)
 122                                 n_dirs = 1;
 123                         for (int i = 0; i < n_dirs; ++i)
 124                                 CreateDirectories (path, depth+1);
 125                 }
 126         }
 127
 128         static void DoSomething ()
 129         {
 130                 if (all_directories.Count == 0) {
 131                         CreateDirectories (root, 0);
 132                         return;
 133                 }
 134
 135                 int random_dir_i = random.Next (all_directories.Count);
 136                 int random_file_i = random.Next (all_files.Count);
 137
 138                 string random_dir = (string) all_directories [random_dir_i];
 139                 string random_file = (string) all_files [random_file_i];
 140
 141                 int action = 0;
 142                 action = random.Next (4);
 143                 switch (action) {
 144
 145                 case 0: // Create new file
 146                         string new_file = CreateFile (random_dir);
 147                         Console.WriteLine ("Created {0}", new_file);
 148                         break;
 149
 150                 case 1: // Delete a file
 151                         File.Delete (random_file);
 152                         all_files.RemoveAt (random_file_i);
 153                         Console.WriteLine ("Deleted {0}", random_file);
 154                         break;
 155
 156                 case 2: // Create new subdirectory
 157                         string path = Path.Combine (random_dir, GetRandomName ());
 158                         Directory.CreateDirectory (path);
 159                         all_directories.Add (path);
 160                         Console.WriteLine ("Created subdirectory {0}", path);
 161                         break;
 162
 163                 case 3: // Recursively delete a subdirectory
 164                         break;
 165                 }
 166         }
 167
 168
 169         static void Main (string [] args)
 170         {
 171                 CommandLine.ProgramName = "beagle-exercise-file-system";
 172                 CommandLine.ProgramCopyright = "Copyright (C) 2005 Novell, Inc.";
 173                 args = CommandLine.Process (typeof (ExerciseFileSystemTool), args);
 174                 if (args == null)
 175                         return;
 176
 177                 if (root == null)
 178                         root = Environment.GetEnvironmentVariable ("PWD");
 179
 180
 181                 if (Directory.Exists (Path.Combine (root, "1")))
 182                         Directory.Delete (Path.Combine (root, "1"), true);
 183                 CreateDirectories (root, 0);
 184
 185                 Console.WriteLine ("Created {0} files across {1} directories",
 186                                    all_files.Count, all_directories.Count);
 187
 188                 for (int i = 0; i < action_count; ++i) {
 189                         DoSomething ();
 190                         int interval = random.Next (max_interval);
 191                         if (interval > 0)
 192                                 Thread.Sleep (interval);
 193                 }
 194         }
 195
 196 }