code.grnet.gr Git - pithos-ms-client/blob - trunk/Pithos.Core/Agents/StateTuple.cs

   1 using System;\r
   2 using System.Diagnostics;\r
   3 using System.IO;\r
   4 using Pithos.Interfaces;\r
   5 using Pithos.Network;\r
   6 \r
   7 namespace Pithos.Core.Agents\r
   8 {\r
   9     [DebuggerDisplay("{FilePath} C:{C} L:{L} S:{S}")]\r
  10     public class StateTuple\r
  11     {\r
  12         public string FilePath { get; private set; }\r
  13 \r
  14         //public string MD5\r
  15         //{\r
  16         //    get\r
  17         //    {\r
  18         //        Debug.Assert(EmptyOrLength(_md5, 32));\r
  19         //        return _md5;\r
  20         //    }\r
  21         //    set\r
  22         //    {\r
  23         //        if (!EmptyOrLength(value, 32))\r
  24         //            throw new ArgumentException("A proper MD5 hash value should have 32 characters");\r
  25         //        _md5 = value;\r
  26         //    }\r
  27         //}\r
  28 \r
  29         private bool EmptyOrLength(string value, int length)\r
  30         {\r
  31             return String.IsNullOrWhiteSpace(value) || value.Length == length;\r
  32         }\r
  33 \r
  34         /// <summary>\r
  35         /// Last encountered server hash, stored in the State\r
  36         /// </summary>\r
  37         public string L\r
  38         {\r
  39             get\r
  40             {\r
  41                 //For the change to Merkle Hash, we need to return the final Merkle Hash\r
  42                 var hash = FileState.NullSafe(f => f.Checksum);\r
  43 \r
  44                // Debug.Assert(FileState==null || hash != null,"FileState without a checksum encountered");\r
  45 \r
  46                 //var hash = FileState.NullSafe(f => f.ETag);\r
  47                 \r
  48                 //Ensure the hash size matches SHA256\r
  49                 //Debug.Assert(EmptyOrLength(hash, 64));\r
  50                 \r
  51                 return String.IsNullOrWhiteSpace(hash) ? null : hash;\r
  52             }\r
  53         }\r
  54 \r
  55         private string _c;\r
  56         /// <summary>\r
  57         /// Current local file Hash\r
  58         /// </summary>\r
  59         public string C\r
  60         {\r
  61             get\r
  62             {\r
  63                 Debug.Assert(EmptyOrLength(_c, 64));\r
  64                 return _c;\r
  65             }\r
  66             set {\r
  67                 if (!EmptyOrLength(value, 64))\r
  68                     throw new ArgumentException("A proper hash value should have 64 characters");\r
  69                 _c = String.IsNullOrWhiteSpace(value) ? null : value;\r
  70             }\r
  71         }\r
  72 \r
  73         /// <summary>\r
  74         /// Server file hash\r
  75         /// </summary>\r
  76         public string S\r
  77         {\r
  78             get\r
  79             {\r
  80                 //The Server hash will be the X-Object-Hash, not the ETag\r
  81                 var hash= ObjectInfo.NullSafe(o => o.X_Object_Hash);\r
  82 \r
  83                 Debug.Assert(EmptyOrLength(hash, 64));\r
  84                 \r
  85                 return String.IsNullOrWhiteSpace(hash) ? null : hash;\r
  86             }\r
  87         }\r
  88 \r
  89         private FileSystemInfo _fileInfo;\r
  90         private TreeHash _merkle;\r
  91         //private string _md5;\r
  92 \r
  93         public FileSystemInfo FileInfo\r
  94         {\r
  95             get { return _fileInfo; }\r
  96             set\r
  97             {\r
  98                 _fileInfo = value;\r
  99                 FilePath = value.FullName;\r
 100             }\r
 101         }\r
 102 \r
 103         public FileState FileState { get; set; }\r
 104         public ObjectInfo ObjectInfo{ get; set; }\r
 105 \r
 106 \r
 107         public TreeHash Merkle\r
 108         {\r
 109             get {\r
 110                 return _merkle;\r
 111             }\r
 112             set {\r
 113                 _merkle = value;\r
 114                 C = _merkle.TopHash.ToHashString();\r
 115             }\r
 116         }\r
 117 \r
 118         public bool Locked { get; set; }\r
 119 \r
 120         public string NewFullPath { get; set; }\r
 121 \r
 122         public string OldChecksum { get; set; }\r
 123 \r
 124         public string OldFullPath { get; set; }\r
 125 \r
 126         public StateTuple() { }\r
 127 \r
 128         public StateTuple(FileSystemInfo info)\r
 129         {\r
 130             FileInfo = info;\r
 131         }\r
 132 \r
 133         public bool HashesValid()\r
 134         {\r
 135             return (EmptyOrLength(C, 64)\r
 136                   && EmptyOrLength(L, 64)\r
 137                   && EmptyOrLength(S, 64)\r
 138                 );\r
 139         }\r
 140     }\r
 141 }