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         public string L\r
  35         {\r
  36             get\r
  37             {\r
  38                 //For the change to Merkle Hash, we need to return the final Merkle Hash\r
  39                 var hash = FileState.NullSafe(f => f.Checksum);\r
  40 \r
  41                 Debug.Assert(FileState==null || hash != null,"FileState without a checksum encountered");\r
  42 \r
  43                 //var hash = FileState.NullSafe(f => f.ETag);\r
  44                 \r
  45                 //Ensure the hash size matches SHA256\r
  46                 Debug.Assert(EmptyOrLength(hash, 64));\r
  47                 \r
  48                 return String.IsNullOrWhiteSpace(hash) ? null : hash;\r
  49             }\r
  50         }\r
  51 \r
  52         private string _c;\r
  53         public string C\r
  54         {\r
  55             get\r
  56             {\r
  57                 Debug.Assert(EmptyOrLength(_c, 64));\r
  58                 return _c;\r
  59             }\r
  60             set {\r
  61                 if (!EmptyOrLength(value, 64))\r
  62                     throw new ArgumentException("A proper hash value should have 64 characters");\r
  63                 _c = String.IsNullOrWhiteSpace(value) ? null : value;\r
  64             }\r
  65         }\r
  66 \r
  67         public string S\r
  68         {\r
  69             get\r
  70             {\r
  71                 //The Server hash will be the X-Object-Hash, not the ETag\r
  72                 var hash= ObjectInfo.NullSafe(o => o.X_Object_Hash);\r
  73 \r
  74                 Debug.Assert(EmptyOrLength(hash, 64));\r
  75                 \r
  76                 return String.IsNullOrWhiteSpace(hash) ? null : hash;\r
  77             }\r
  78         }\r
  79 \r
  80         private FileSystemInfo _fileInfo;\r
  81         private TreeHash _merkle;\r
  82         private string _md5;\r
  83 \r
  84         public FileSystemInfo FileInfo\r
  85         {\r
  86             get { return _fileInfo; }\r
  87             set\r
  88             {\r
  89                 _fileInfo = value;\r
  90                 FilePath = value.FullName;\r
  91             }\r
  92         }\r
  93 \r
  94         public FileState FileState { get; set; }\r
  95         public ObjectInfo ObjectInfo{ get; set; }\r
  96 \r
  97 \r
  98         public TreeHash Merkle\r
  99         {\r
 100             get {\r
 101                 return _merkle;\r
 102             }\r
 103             set {\r
 104                 _merkle = value;\r
 105                 C = _merkle.TopHash.ToHashString();\r
 106             }\r
 107         }\r
 108 \r
 109         public bool Locked { get; set; }\r
 110 \r
 111         public string NewFullPath { get; set; }\r
 112 \r
 113         public string OldMD5 { get; set; }\r
 114 \r
 115         public string OldFullPath { get; set; }\r
 116 \r
 117         public StateTuple() { }\r
 118 \r
 119         public StateTuple(FileSystemInfo info)\r
 120         {\r
 121             FileInfo = info;\r
 122         }\r
 123 \r
 124         public bool HashesValid()\r
 125         {\r
 126             return (EmptyOrLength(C, 64)\r
 127                   && EmptyOrLength(L, 64)\r
 128                   && EmptyOrLength(S, 64)\r
 129                 );\r
 130         }\r
 131     }\r
 132 }