src/ShareDiscovery/ShareDiscoveryService.cs

   1 using System;
   2 using System.Diagnostics;
   3 using System.IO;
   4 using System.Runtime.Serialization;
   5 using System.Runtime.Serialization.Formatters.Binary;
   6 using System.Text;
   7
   8 namespace ShareDiscovery
   9 {
  10     // NOTE: If you change the class name "ShareDiscoveryService" here, you must also update the reference to "ShareDiscoveryService" in App.config.
  11     public class ShareDiscoveryService : IShareDiscoveryService
  12     {
  13         #region Implementation of IShareDiscoveryService
  14
  15         /// <summary>
  16         /// <para>
  17         /// Return next share to be indexed. Member of <see cref="IShareDiscoveryService"/>.
  18         /// </para>
  19         /// <para>
  20         /// First (several) run(s) may return null as initialization may tame some time.
  21         /// </para>
  22         /// </summary>
  23         /// <returns>Next share to index or NULL if no shares know at a time.</returns>
  24         public Stream GetShareToIndex()
  25         {
  26             string rval = IndexManager.Instance.GetNextShare();
  27             byte[] bytes = Encoding.UTF8.GetBytes( rval );
  28             return new MemoryStream( bytes );
  29         }
  30
  31
  32         /// <summary>
  33         /// Save index for a share previousely served. Member of <see cref="IShareDiscoveryService"/>.
  34         /// </summary>
  35         /// <param name="shareStream"></param>
  36         public void SaveIndex( Stream shareStream )
  37         {
  38             IFormatter formatter = new BinaryFormatter();
  39             TreeNode share = formatter.Deserialize( shareStream ) as TreeNode;
  40
  41             if ( share != null )
  42             {
  43                 EventLog.WriteEntry( "lanspider", "Have got " + share.Name + " to index." );
  44                 IndexManager.Instance.SaveShare( share );
  45             }
  46         }
  47
  48         #endregion
  49     }
  50
  51     /// <summary>
  52     /// Stores information about path to be saved to the database.
  53     /// </summary>
  54     internal class PathInfo
  55     {
  56         private readonly string _path;
  57         private readonly long _size;
  58
  59         private readonly DateTime _creationTime;
  60         private readonly DateTime _modificationTime;
  61         private readonly DateTime _accessTime;
  62
  63         /// <summary>
  64         /// Initializes an instance of <see cref="PathInfo"/>.
  65         /// </summary>
  66         /// <param name="path"></param>
  67         /// <param name="size"></param>
  68         /// <param name="creationTime"></param>
  69         /// <param name="modificationTime"></param>
  70         /// <param name="accessTime"></param>
  71         public PathInfo( string path, long size, DateTime creationTime, DateTime modificationTime, DateTime accessTime )
  72         {
  73             _path = path;
  74             _accessTime = accessTime;
  75             _modificationTime = modificationTime;
  76             _creationTime = creationTime;
  77             _size = size;
  78         }
  79
  80         /// <summary>
  81         /// Initializes an instance of <see cref="PathInfo"/> based on an instance of
  82         /// <see cref="TreeNode"/>.
  83         /// </summary>
  84         /// <param name="path"></param>
  85         /// <param name="node"></param>
  86         public PathInfo( string path, TreeNode node )
  87         {
  88             _path = path;
  89             _accessTime = node.AccessTime;
  90             _modificationTime = node.ModificationTime;
  91             _creationTime = node.CreationTime;
  92             _size = node.Size;
  93         }
  94
  95         /// <summary>
  96         /// Gets full file path.
  97         /// </summary>
  98         public string Path
  99         {
 100             get
 101             {
 102                 return _path;
 103             }
 104         }
 105
 106         /// <summary>
 107         /// Gets file size in bytes.
 108         /// </summary>
 109         public long Size
 110         {
 111             get
 112             {
 113                 return _size;
 114             }
 115         }
 116
 117         /// <summary>
 118         /// Gets file's time of creation.
 119         /// </summary>
 120         public DateTime CreationTime
 121         {
 122             get
 123             {
 124                 return _creationTime;
 125             }
 126         }
 127
 128         /// <summary>
 129         /// Gets file's last time of modification.
 130         /// </summary>
 131         public DateTime ModificationTime
 132         {
 133             get
 134             {
 135                 return _modificationTime;
 136             }
 137         }
 138
 139         /// <summary>
 140         /// Gets file's last access time.
 141         /// </summary>
 142         public DateTime AccessTime
 143         {
 144             get
 145             {
 146                 return _accessTime;
 147             }
 148         }
 149     }
 150 }