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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 System.Collections.Generic;
using System.Linq;
namespace Duplicati.Library.Main.Operation
{
internal class ListChangesHandler
{
private string m_backendurl;
private Options m_options;
private ListChangesResults m_result;
public ListChangesHandler(string backend, Options options, ListChangesResults result)
{
m_backendurl = backend;
m_options = options;
m_result = result;
}
private static Tuple<long, DateTime, T> SelectTime<T>(string value, IEnumerable<Tuple<long, DateTime, T>> list, out long index, out DateTime time, out T el)
{
long indexValue;
Tuple<long, DateTime, T> res;
if (!long.TryParse(value, out indexValue))
{
var t = Library.Utility.Timeparser.ParseTimeInterval(value, DateTime.Now, true);
res = list.OrderBy(x => Math.Abs((x.Item2 - t).Ticks)).First();
}
else
{
res = list.OrderBy(x => Math.Abs(x.Item1 - indexValue)).First();
}
index = res.Item1;
time = res.Item2;
el = res.Item3;
return res;
}
public void Run(string baseVersion, string compareVersion, IEnumerable<string> filterstrings = null, Library.Utility.IFilter compositefilter = null)
{
var filter = Library.Utility.JoinedFilterExpression.Join(new Library.Utility.FilterExpression(filterstrings), compositefilter);
var useLocalDb = !m_options.NoLocalDb && System.IO.File.Exists(m_options.Dbpath);
baseVersion = string.IsNullOrEmpty(baseVersion) ? "1" : baseVersion;
compareVersion = string.IsNullOrEmpty(compareVersion) ? "0" : compareVersion;
long baseVersionIndex = -1;
long compareVersionIndex = -1;
DateTime baseVersionTime = new DateTime(0);
DateTime compareVersionTime = new DateTime(0);
using(var tmpdb = useLocalDb ? null : new Library.Utility.TempFile())
using(var db = new Database.LocalListChangesDatabase(useLocalDb ? m_options.Dbpath : (string)tmpdb))
using(var backend = new BackendManager(m_backendurl, m_options, m_result.BackendWriter, db))
using(var storageKeeper = db.CreateStorageHelper())
{
m_result.SetDatabase(db);
if (useLocalDb)
{
var dbtimes = db.FilesetTimes.ToList();
if (dbtimes.Count < 2)
throw new Exception(string.Format("Need at least two backups to show differences, database contains {0} backups", dbtimes.Count));
long baseVersionId;
long compareVersionId;
var times = dbtimes.Zip(Enumerable.Range(0, dbtimes.Count), (a, b) => new Tuple<long, DateTime, long>(b, a.Value, a.Key)).ToList();
var bt = SelectTime(baseVersion, times, out baseVersionIndex, out baseVersionTime, out baseVersionId);
times.Remove(bt);
SelectTime(compareVersion, times, out compareVersionIndex, out compareVersionTime, out compareVersionId);
storageKeeper.AddFromDb(baseVersionId, false, filter);
storageKeeper.AddFromDb(compareVersionId, true, filter);
}
else
{
m_result.AddMessage("No local database, accessing remote store");
var parsedlist = (from n in backend.List()
let p = Volumes.VolumeBase.ParseFilename(n)
where p != null && p.FileType == RemoteVolumeType.Files
orderby p.Time descending
select p).ToArray();
var numberedList = parsedlist.Zip(Enumerable.Range(0, parsedlist.Length), (a, b) => new Tuple<long, DateTime, Volumes.IParsedVolume>(b, a.Time, a)).ToList();
if (numberedList.Count < 2)
throw new Exception(string.Format("Need at least two backups to show differences, database contains {0} backups", numberedList.Count));
Volumes.IParsedVolume baseFile;
Volumes.IParsedVolume compareFile;
var bt = SelectTime(baseVersion, numberedList, out baseVersionIndex, out baseVersionTime, out baseFile);
numberedList.Remove(bt);
SelectTime(compareVersion, numberedList, out compareVersionIndex, out compareVersionTime, out compareFile);
Func<FilelistEntryType, Library.Interface.ListChangesElementType> conv = (x) => {
switch (x)
{
case FilelistEntryType.File:
return Library.Interface.ListChangesElementType.File;
case FilelistEntryType.Folder:
return Library.Interface.ListChangesElementType.Folder;
case FilelistEntryType.Symlink:
return Library.Interface.ListChangesElementType.Symlink;
default:
return (Library.Interface.ListChangesElementType)(-1);
}
};
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
return;
using(var tmpfile = backend.Get(baseFile.File.Name, baseFile.File.Size, null))
using(var rd = new Volumes.FilesetVolumeReader(RestoreHandler.GetCompressionModule(baseFile.File.Name), tmpfile, m_options))
foreach(var f in rd.Files)
if (Library.Utility.FilterExpression.Matches(filter, f.Path))
storageKeeper.AddElement(f.Path, f.Hash, f.Metahash, f.Size, conv(f.Type), false);
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
return;
using(var tmpfile = backend.Get(compareFile.File.Name, compareFile.File.Size, null))
using(var rd = new Volumes.FilesetVolumeReader(RestoreHandler.GetCompressionModule(compareFile.File.Name), tmpfile, m_options))
foreach(var f in rd.Files)
if (Library.Utility.FilterExpression.Matches(filter, f.Path))
storageKeeper.AddElement(f.Path, f.Hash, f.Metahash, f.Size, conv(f.Type), true);
}
var changes = storageKeeper.CreateChangeCountReport();
var sizes = storageKeeper.CreateChangeSizeReport();
m_result.SetResult(
baseVersionTime, baseVersionIndex, compareVersionTime, compareVersionIndex,
changes.AddedFolders, changes.AddedSymlinks, changes.AddedFiles,
changes.DeletedFolders, changes.DeletedSymlinks, changes.DeletedFiles,
changes.ModifiedFolders, changes.ModifiedSymlinks, changes.ModifiedFiles,
sizes.AddedSize, sizes.DeletedSize, sizes.PreviousSize, sizes.CurrentSize,
m_options.Verbose ?
(from n in storageKeeper.CreateChangedFileReport()
select n).ToArray() : null
);
return;
}
}
}
}
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