code.grnet.gr Git - pithos-ms-client/blob - trunk/Pithos.Network/WebExtensions.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Text;
   5 using System.Net;
   6 using System.IO;
   7 using log4net;
   8
   9 namespace Pithos.Network
  10 {
  11     public static class WebExtensions
  12     {
  13
  14         public static string ReadToEnd(this HttpWebResponse response)
  15         {
  16             using (var stream = response.GetResponseStream())
  17             {
  18                 if (stream == null)
  19                     return null;
  20                 using (var reader = new StreamReader(stream))
  21                 {
  22                     var body = reader.ReadToEnd();
  23                     return body;
  24                 }
  25             }
  26         }
  27
  28         public static void LogError(this ILog log,HttpWebResponse response)
  29         {
  30             if (log.IsDebugEnabled)
  31             {
  32                 if (response != null)
  33                 {
  34                     var body = response.ReadToEnd();
  35                     log.ErrorFormat("Headers:\n{0}\nBody:{1}", response.Headers,body);
  36                 }
  37             }
  38         }
  39
  40         public static TextReader GetLoggedReader(this Stream stream, ILog log)
  41         {
  42             var reader = new StreamReader(stream);
  43             if (!log.IsDebugEnabled)
  44                 return reader;
  45
  46             using (reader)
  47             {
  48                 var body = reader.ReadToEnd();
  49                 log.DebugFormat("JSON response: {0}", body);
  50                 return new StringReader(body);
  51             }
  52         }
  53
  54
  55         public static TOut NullSafe<TIn, TOut>(this TIn obj, Func<TIn, TOut> memberAction)
  56         {
  57             //Note we should not use obj != null because it can not test value types and also
  58             //compiler has to lift the type to a nullable type for doing the comparision with null.
  59             return (!EqualityComparer<TIn>.Default.Equals(obj, default(TIn))) ? memberAction(obj) : default(TOut);
  60
  61         }
  62
  63
  64
  65
  66     }
  67 }