-
Notifications
You must be signed in to change notification settings - Fork 872
/
PurgeFilesHandler.cs
262 lines (218 loc) · 14 KB
/
PurgeFilesHandler.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
// Copyright (C) 2016, 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.ComponentModel;
using System.Linq;
using Duplicati.Library.Interface;
using Duplicati.Library.Main.Database;
namespace Duplicati.Library.Main.Operation
{
internal class PurgeFilesHandler
{
/// <summary>
/// The tag used for logging
/// </summary>
private static readonly string LOGTAG = Logging.Log.LogTagFromType<PurgeFilesHandler>();
protected readonly string m_backendurl;
protected readonly Options m_options;
protected readonly PurgeFilesResults m_result;
public PurgeFilesHandler(string backend, Options options, PurgeFilesResults result)
{
m_backendurl = backend;
m_options = options;
m_result = result;
}
public void Run(Library.Utility.IFilter filter)
{
if (filter == null || filter.Empty)
throw new UserInformationException("Cannot purge with an empty filter, as that would cause all files to be removed.\nTo remove an entire backup set, use the \"delete\" command.", "EmptyFilterPurgeNotAllowed");
if (!System.IO.File.Exists(m_options.Dbpath))
throw new UserInformationException(string.Format("Database file does not exist: {0}", m_options.Dbpath), "DatabaseDoesNotExist");
using (var db = new Database.LocalPurgeDatabase(m_options.Dbpath))
DoRun(db, filter, null, 0, 1);
}
public void Run(Database.LocalPurgeDatabase db, float pgoffset, float pgspan, Action<System.Data.IDbCommand, long, string> filtercommand)
{
DoRun(db, null, filtercommand, pgoffset, pgspan);
}
private void DoRun(Database.LocalPurgeDatabase db, Library.Utility.IFilter filter, Action<System.Data.IDbCommand, long, string> filtercommand, float pgoffset, float pgspan)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.PurgeFiles_Begin);
Logging.Log.WriteInformationMessage(LOGTAG, "StartingPurge", "Starting purge operation");
var doCompactStep = !m_options.NoAutoCompact && filtercommand == null;
using (var backend = new BackendManager(m_backendurl, m_options, m_result.BackendWriter, db))
{
if (db.PartiallyRecreated)
throw new UserInformationException("The purge command does not work on partially recreated databases", "PurgeNotAllowedOnPartialDatabase");
if (db.RepairInProgress && filtercommand == null)
throw new UserInformationException(string.Format("The purge command does not work on an incomplete database, try the {0} operation.", "purge-broken-files"), "PurgeNotAllowedOnIncompleteDatabase");
var versions = db.GetFilesetIDs(m_options.Time, m_options.Version).OrderByDescending(x => x).ToArray();
if (versions.Length <= 0)
throw new UserInformationException("No filesets matched the supplied time or versions", "NoFilesetFoundForTimeOrVersion");
var orphans = db.CountOrphanFiles(null);
if (orphans != 0)
throw new UserInformationException(string.Format("Unable to start the purge process as there are {0} orphan file(s)", orphans), "CannotPurgeWithOrphans");
Utility.UpdateOptionsFromDb(db, m_options);
Utility.VerifyParameters(db, m_options);
if (filtercommand == null)
{
db.VerifyConsistency(m_options.Blocksize, m_options.BlockhashSize, false, null);
if (m_options.NoBackendverification)
FilelistProcessor.VerifyLocalList(backend, db);
else
FilelistProcessor.VerifyRemoteList(backend, m_options, db, m_result.BackendWriter, null);
}
var filesets = db.FilesetTimes.OrderByDescending(x => x.Value).ToArray();
var versionprogress = ((doCompactStep ? 0.75f : 1.0f) / versions.Length) * pgspan;
var currentprogress = pgoffset;
var progress = 0;
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.PurgeFiles_Process);
m_result.OperationProgressUpdater.UpdateProgress(currentprogress);
// Reverse makes sure we re-write the old versions first
foreach (var versionid in versions.Reverse())
{
progress++;
Logging.Log.WriteVerboseMessage(LOGTAG, "ProcessingFilelistVolumes", "Processing filelist volume {0} of {1}", progress, versions.Length);
using (var tr = db.BeginTransaction())
{
var ix = -1;
for (var i = 0; i < filesets.Length; i++)
if (filesets[i].Key == versionid)
{
ix = i;
break;
}
if (ix < 0)
throw new InvalidProgramException(string.Format("Fileset was reported with id {0}, but could not be found?", versionid));
var secs = 0;
while (secs < 60)
{
secs++;
var tfn = Volumes.VolumeBase.GenerateFilename(RemoteVolumeType.Files, m_options, null, filesets[ix].Value.AddSeconds(secs));
if (db.GetRemoteVolumeID(tfn, tr) < 0)
break;
}
var tsOriginal = filesets[ix].Value;
var ts = tsOriginal.AddSeconds(secs);
var prevfilename = db.GetRemoteVolumeNameForFileset(filesets[ix].Key, tr);
if (secs >= 60)
throw new Exception(string.Format("Unable to create a new fileset for {0} because the resulting timestamp {1} is more than 60 seconds away", prevfilename, ts));
if (ix != 0 && filesets[ix - 1].Value <= ts)
throw new Exception(string.Format("Unable to create a new fileset for {0} because the resulting timestamp {1} is larger than the next timestamp {2}", prevfilename, ts, filesets[ix - 1].Value));
using (var tempset = db.CreateTemporaryFileset(versionid, tr))
{
if (filtercommand == null)
tempset.ApplyFilter(filter);
else
tempset.ApplyFilter(filtercommand);
if (tempset.RemovedFileCount == 0)
{
Logging.Log.WriteInformationMessage(LOGTAG, "NotWritingNewFileset", "Not writing a new fileset for {0} as it was not changed", prevfilename);
currentprogress += versionprogress;
tr.Rollback();
continue;
}
else
{
using (var tf = new Library.Utility.TempFile())
using (var vol = new Volumes.FilesetVolumeWriter(m_options, ts))
{
var isOriginalFilesetFullBackup = db.IsFilesetFullBackup(tsOriginal);
var newids = tempset.ConvertToPermanentFileset(vol.RemoteFilename, ts, isOriginalFilesetFullBackup);
vol.VolumeID = newids.Item1;
vol.CreateFilesetFile(isOriginalFilesetFullBackup);
Logging.Log.WriteInformationMessage(LOGTAG, "ReplacingFileset", "Replacing fileset {0} with {1} which has with {2} fewer file(s) ({3} reduction)", prevfilename, vol.RemoteFilename, tempset.RemovedFileCount, Library.Utility.Utility.FormatSizeString(tempset.RemovedFileSize));
db.WriteFileset(vol, newids.Item2, tr);
m_result.RemovedFileSize += tempset.RemovedFileSize;
m_result.RemovedFileCount += tempset.RemovedFileCount;
m_result.RewrittenFileLists++;
currentprogress += (versionprogress / 2);
m_result.OperationProgressUpdater.UpdateProgress(currentprogress);
if (m_options.Dryrun || m_options.FullResult)
{
foreach (var fe in tempset.ListAllDeletedFiles())
{
var msg = string.Format(" Purging file {0} ({1})", fe.Key, Library.Utility.Utility.FormatSizeString(fe.Value));
Logging.Log.WriteProfilingMessage(LOGTAG, "PurgeFile", msg);
Logging.Log.WriteVerboseMessage(LOGTAG, "PurgeFile", msg);
if (m_options.Dryrun)
Logging.Log.WriteDryrunMessage(LOGTAG, "WouldPurgeFile", msg);
}
if (m_options.Dryrun)
Logging.Log.WriteDryrunMessage(LOGTAG, "WouldWriteRemoteFiles", "Would write files to remote storage");
Logging.Log.WriteVerboseMessage(LOGTAG, "WritingRemoteFiles", "Writing files to remote storage");
}
if (m_options.Dryrun)
{
Logging.Log.WriteDryrunMessage(LOGTAG, "WouldUploadAndDelete", "Would upload file {0} ({1}) and delete file {2}, removing {3} files", vol.RemoteFilename, Library.Utility.Utility.FormatSizeString(vol.Filesize), prevfilename, tempset.RemovedFileCount);
tr.Rollback();
}
else
{
var lst = db.DropFilesetsFromTable(new[] { filesets[ix].Value }, tr).ToArray();
foreach (var f in lst)
db.UpdateRemoteVolume(f.Key, RemoteVolumeState.Deleting, f.Value, null, tr);
tr.Commit();
backend.Put(vol, synchronous: true);
backend.Delete(prevfilename, -1, true);
backend.FlushDbMessages();
}
}
}
}
}
currentprogress += (versionprogress / 2);
m_result.OperationProgressUpdater.UpdateProgress(currentprogress);
}
if (doCompactStep)
{
if (m_result.RewrittenFileLists == 0)
{
Logging.Log.WriteInformationMessage(LOGTAG, "SkippingCompacting", "Skipping compacting as no new volumes were written");
}
else
{
m_result.OperationProgressUpdater.UpdateProgress(pgoffset + (0.75f * pgspan));
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.PurgeFiles_Compact);
m_result.CompactResults = new CompactResults(m_result);
using (var cdb = new Database.LocalDeleteDatabase(db))
{
var tr = cdb.BeginTransaction();
try
{
new CompactHandler(backend.BackendUrl, m_options, (CompactResults)m_result.CompactResults).DoCompact(cdb, true, ref tr, backend);
}
catch
{
try { tr.Rollback(); }
catch { }
}
finally
{
try { tr.Commit(); }
catch { }
}
}
}
m_result.OperationProgressUpdater.UpdateProgress(pgoffset + pgspan);
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.PurgeFiles_Complete);
}
backend.WaitForComplete(db, null);
}
}
}
}