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// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using Duplicati.Library.Interface;
using System.Collections.Generic;
using System.IO;
namespace Duplicati.UnitTest
{
public class RandomErrorBackend : IBackend, IStreamingBackend
{
static RandomErrorBackend() { WrappedBackend = "file"; }
private static Random random = new Random(42);
public static string WrappedBackend { get; set; }
private IStreamingBackend m_backend;
public RandomErrorBackend()
{
}
public RandomErrorBackend(string url, Dictionary<string, string> options)
{
var u = new Library.Utility.Uri(url).SetScheme(WrappedBackend).ToString();
m_backend = (IStreamingBackend)Library.DynamicLoader.BackendLoader.GetBackend(u, options);
}
private void ThrowErrorRandom()
{
if (random.NextDouble() > 0.90)
throw new Exception("Random upload failure");
}
#region IStreamingBackend implementation
public void Put(string remotename, Stream stream)
{
var uploadError = random.NextDouble() > 0.9;
using(var f = new Library.Utility.ProgressReportingStream(stream, stream.Length, x => { if (uploadError && stream.Position > stream.Length / 2) throw new Exception("Random upload failure"); }))
m_backend.Put(remotename, f);
ThrowErrorRandom();
}
public void Get(string remotename, Stream stream)
{
ThrowErrorRandom();
m_backend.Get(remotename, stream);
ThrowErrorRandom();
}
#endregion
#region IBackend implementation
public IEnumerable<IFileEntry> List()
{
return m_backend.List();
}
public void Put(string remotename, string filename)
{
ThrowErrorRandom();
m_backend.Put(remotename, filename);
ThrowErrorRandom();
}
public void Get(string remotename, string filename)
{
ThrowErrorRandom();
m_backend.Get(remotename, filename);
ThrowErrorRandom();
}
public void Delete(string remotename)
{
ThrowErrorRandom();
m_backend.Delete(remotename);
ThrowErrorRandom();
}
public void Test()
{
m_backend.Test();
}
public void CreateFolder()
{
m_backend.CreateFolder();
}
public string[] DNSName
{
get
{
return m_backend.DNSName;
}
}
public string DisplayName
{
get
{
return "Random Error Backend";
}
}
public string ProtocolKey
{
get
{
return "randomerror";
}
}
public IList<ICommandLineArgument> SupportedCommands
{
get
{
if (m_backend == null)
try { return Duplicati.Library.DynamicLoader.BackendLoader.GetSupportedCommands(WrappedBackend + "://"); }
catch { }
return m_backend.SupportedCommands;
}
}
public string Description
{
get
{
return "A testing backend that randomly fails";
}
}
#endregion
#region IDisposable implementation
public void Dispose()
{
if (m_backend != null)
try { m_backend.Dispose(); }
finally { m_backend = null; }
}
#endregion
}
}
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