root / trunk / Pithos.Core / Agents / StatusAgent.cs @ c945b450
History | View | Annotate | Download (37.2 kB)
1 |
#region |
---|---|
2 |
/* ----------------------------------------------------------------------- |
3 |
* <copyright file="StatusAgent.cs" company="GRNet"> |
4 |
* |
5 |
* Copyright 2011-2012 GRNET S.A. All rights reserved. |
6 |
* |
7 |
* Redistribution and use in source and binary forms, with or |
8 |
* without modification, are permitted provided that the following |
9 |
* conditions are met: |
10 |
* |
11 |
* 1. Redistributions of source code must retain the above |
12 |
* copyright notice, this list of conditions and the following |
13 |
* disclaimer. |
14 |
* |
15 |
* 2. Redistributions in binary form must reproduce the above |
16 |
* copyright notice, this list of conditions and the following |
17 |
* disclaimer in the documentation and/or other materials |
18 |
* provided with the distribution. |
19 |
* |
20 |
* |
21 |
* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
22 |
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
23 |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
24 |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
25 |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
26 |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
27 |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
28 |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
29 |
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
31 |
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
32 |
* POSSIBILITY OF SUCH DAMAGE. |
33 |
* |
34 |
* The views and conclusions contained in the software and |
35 |
* documentation are those of the authors and should not be |
36 |
* interpreted as representing official policies, either expressed |
37 |
* or implied, of GRNET S.A. |
38 |
* </copyright> |
39 |
* ----------------------------------------------------------------------- |
40 |
*/ |
41 |
#endregion |
42 |
using System; |
43 |
using System.Collections.Generic; |
44 |
using System.ComponentModel.Composition; |
45 |
using System.Data.SQLite; |
46 |
using System.Diagnostics; |
47 |
using System.Diagnostics.Contracts; |
48 |
using System.IO; |
49 |
using System.Linq; |
50 |
using System.Reflection; |
51 |
using System.Security.Cryptography; |
52 |
using System.Text; |
53 |
using System.Threading; |
54 |
using System.Threading.Tasks; |
55 |
using Castle.ActiveRecord; |
56 |
using Castle.ActiveRecord.Framework; |
57 |
using Castle.ActiveRecord.Framework.Config; |
58 |
using NHibernate.ByteCode.Castle; |
59 |
using NHibernate.Cfg; |
60 |
using NHibernate.Cfg.Loquacious; |
61 |
using NHibernate.Dialect; |
62 |
using Pithos.Interfaces; |
63 |
using Pithos.Network; |
64 |
using log4net; |
65 |
using Environment = System.Environment; |
66 |
|
67 |
namespace Pithos.Core.Agents |
68 |
{ |
69 |
[Export(typeof(IStatusChecker)),Export(typeof(IStatusKeeper))] |
70 |
public class StatusAgent:IStatusChecker,IStatusKeeper |
71 |
{ |
72 |
private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
73 |
|
74 |
[System.ComponentModel.Composition.Import] |
75 |
public IPithosSettings Settings { get; set; } |
76 |
|
77 |
private Agent<Action> _persistenceAgent; |
78 |
|
79 |
|
80 |
|
81 |
public StatusAgent() |
82 |
{ |
83 |
var appDataPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData); |
84 |
|
85 |
_pithosDataPath = Path.Combine(appDataPath , "GRNET\\PITHOS"); |
86 |
if (!Directory.Exists(_pithosDataPath)) |
87 |
Directory.CreateDirectory(_pithosDataPath); |
88 |
|
89 |
var dbPath = Path.Combine(_pithosDataPath, "pithos.db"); |
90 |
|
91 |
MigrateOldDb(dbPath, appDataPath); |
92 |
|
93 |
|
94 |
var source = GetConfiguration(_pithosDataPath); |
95 |
ActiveRecordStarter.Initialize(source,typeof(FileState),typeof(FileTag)); |
96 |
|
97 |
ActiveRecordStarter.UpdateSchema(); |
98 |
|
99 |
|
100 |
if (!File.Exists(dbPath)) |
101 |
ActiveRecordStarter.CreateSchema(); |
102 |
|
103 |
CreateTrigger(); |
104 |
|
105 |
} |
106 |
|
107 |
|
108 |
private static void MigrateOldDb(string dbPath, string appDataPath) |
109 |
{ |
110 |
if(String.IsNullOrWhiteSpace(dbPath)) |
111 |
throw new ArgumentNullException("dbPath"); |
112 |
if(String.IsNullOrWhiteSpace(appDataPath)) |
113 |
throw new ArgumentNullException("appDataPath"); |
114 |
Contract.EndContractBlock(); |
115 |
|
116 |
var oldDbPath = Path.Combine(appDataPath, "Pithos", "pithos.db"); |
117 |
var oldDbInfo = new FileInfo(oldDbPath); |
118 |
if (oldDbInfo.Exists && !File.Exists(dbPath)) |
119 |
{ |
120 |
Log.InfoFormat("Moving database from {0} to {1}",oldDbInfo.FullName,dbPath); |
121 |
var oldDirectory = oldDbInfo.Directory; |
122 |
oldDbInfo.MoveTo(dbPath); |
123 |
|
124 |
if (Log.IsDebugEnabled) |
125 |
Log.DebugFormat("Deleting {0}",oldDirectory.FullName); |
126 |
|
127 |
oldDirectory.Delete(true); |
128 |
} |
129 |
} |
130 |
|
131 |
private void CreateTrigger() |
132 |
{ |
133 |
using (var connection = GetConnection()) |
134 |
using (var triggerCommand = connection.CreateCommand()) |
135 |
{ |
136 |
var cmdText = new StringBuilder() |
137 |
.AppendLine("CREATE TRIGGER IF NOT EXISTS update_last_modified UPDATE ON FileState FOR EACH ROW") |
138 |
.AppendLine("BEGIN") |
139 |
.AppendLine("UPDATE FileState SET Modified=datetime('now') WHERE Id=old.Id;") |
140 |
.AppendLine("END;") |
141 |
.AppendLine("CREATE TRIGGER IF NOT EXISTS insert_last_modified INSERT ON FileState FOR EACH ROW") |
142 |
.AppendLine("BEGIN") |
143 |
.AppendLine("UPDATE FileState SET Modified=datetime('now') WHERE Id=new.Id;") |
144 |
.AppendLine("END;") |
145 |
.ToString(); |
146 |
triggerCommand.CommandText = cmdText; |
147 |
triggerCommand.ExecuteNonQuery(); |
148 |
} |
149 |
} |
150 |
|
151 |
|
152 |
private static InPlaceConfigurationSource GetConfiguration(string pithosDbPath) |
153 |
{ |
154 |
if (String.IsNullOrWhiteSpace(pithosDbPath)) |
155 |
throw new ArgumentNullException("pithosDbPath"); |
156 |
if (!Path.IsPathRooted(pithosDbPath)) |
157 |
throw new ArgumentException("path must be a rooted path", "pithosDbPath"); |
158 |
Contract.EndContractBlock(); |
159 |
|
160 |
var properties = new Dictionary<string, string> |
161 |
{ |
162 |
{"connection.driver_class", "NHibernate.Driver.SQLite20Driver"}, |
163 |
{"dialect", "NHibernate.Dialect.SQLiteDialect"}, |
164 |
{"connection.provider", "NHibernate.Connection.DriverConnectionProvider"}, |
165 |
{ |
166 |
"proxyfactory.factory_class", |
167 |
"NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle" |
168 |
}, |
169 |
}; |
170 |
|
171 |
var connectionString = String.Format(@"Data Source={0}\pithos.db;Version=3;Enlist=N", pithosDbPath); |
172 |
properties.Add("connection.connection_string", connectionString); |
173 |
|
174 |
var source = new InPlaceConfigurationSource(); |
175 |
source.Add(typeof (ActiveRecordBase), properties); |
176 |
source.SetDebugFlag(false); |
177 |
return source; |
178 |
} |
179 |
|
180 |
public void StartProcessing(CancellationToken token) |
181 |
{ |
182 |
_persistenceAgent = Agent<Action>.Start(queue => |
183 |
{ |
184 |
Action loop = null; |
185 |
loop = () => |
186 |
{ |
187 |
var job = queue.Receive(); |
188 |
job.ContinueWith(t => |
189 |
{ |
190 |
var action = job.Result; |
191 |
try |
192 |
{ |
193 |
action(); |
194 |
} |
195 |
catch (SQLiteException ex) |
196 |
{ |
197 |
Log.ErrorFormat("[ERROR] SQL \n{0}", ex); |
198 |
} |
199 |
catch (Exception ex) |
200 |
{ |
201 |
Log.ErrorFormat("[ERROR] STATE \n{0}", ex); |
202 |
} |
203 |
queue.NotifyComplete(action); |
204 |
// ReSharper disable AccessToModifiedClosure |
205 |
queue.DoAsync(loop); |
206 |
// ReSharper restore AccessToModifiedClosure |
207 |
}); |
208 |
}; |
209 |
loop(); |
210 |
}); |
211 |
|
212 |
} |
213 |
|
214 |
|
215 |
|
216 |
public void Stop() |
217 |
{ |
218 |
_persistenceAgent.Stop(); |
219 |
} |
220 |
|
221 |
|
222 |
public void ProcessExistingFiles(IEnumerable<FileInfo> existingFiles) |
223 |
{ |
224 |
if(existingFiles ==null) |
225 |
throw new ArgumentNullException("existingFiles"); |
226 |
Contract.EndContractBlock(); |
227 |
|
228 |
//Find new or matching files with a left join to the stored states |
229 |
var fileStates = FileState.Queryable; |
230 |
var currentFiles=from file in existingFiles |
231 |
join state in fileStates on file.FullName.ToLower() equals state.FilePath.ToLower() into gs |
232 |
from substate in gs.DefaultIfEmpty() |
233 |
select new {File = file, State = substate}; |
234 |
|
235 |
//To get the deleted files we must get the states that have no corresponding |
236 |
//files. |
237 |
//We can't use the File.Exists method inside a query, so we get all file paths from the states |
238 |
var statePaths = (from state in fileStates |
239 |
select new {state.Id, state.FilePath}).ToList(); |
240 |
//and check each one |
241 |
var missingStates= (from path in statePaths |
242 |
where !File.Exists(path.FilePath) && !Directory.Exists(path.FilePath) |
243 |
select path.Id).ToList(); |
244 |
//Finally, retrieve the states that correspond to the deleted files |
245 |
var deletedFiles = from state in fileStates |
246 |
where missingStates.Contains(state.Id) |
247 |
select new { File = default(FileInfo), State = state }; |
248 |
|
249 |
var pairs = currentFiles.Union(deletedFiles).ToList(); |
250 |
|
251 |
using (var shortHasher = HashAlgorithm.Create("sha1")) |
252 |
{ |
253 |
foreach (var pair in pairs) |
254 |
{ |
255 |
var fileState = pair.State; |
256 |
var file = pair.File; |
257 |
if (fileState == null) |
258 |
{ |
259 |
//This is a new file |
260 |
var createState = FileState.CreateFor(file); |
261 |
_persistenceAgent.Post(createState.Create); |
262 |
} |
263 |
else if (file == null) |
264 |
{ |
265 |
//This file was deleted while we were down. We should mark it as deleted |
266 |
//We have to go through UpdateStatus here because the state object we are using |
267 |
//was created by a different ORM session. |
268 |
_persistenceAgent.Post(() => UpdateStatusDirect(fileState.Id, FileStatus.Deleted)); |
269 |
} |
270 |
else |
271 |
{ |
272 |
//This file has a matching state. Need to check for possible changes |
273 |
//To check for changes, we use the cheap (in CPU terms) SHA1 algorithm |
274 |
//on the entire file. |
275 |
|
276 |
var hashString = file.ComputeShortHash(shortHasher); |
277 |
//TODO: Need a way to attach the hashes to the filestate so we don't |
278 |
//recalculate them each time a call to calculate has is made |
279 |
//We can either store them to the filestate or add them to a |
280 |
//dictionary |
281 |
|
282 |
//If the hashes don't match the file was changed |
283 |
if (fileState.ShortHash != hashString) |
284 |
{ |
285 |
_persistenceAgent.Post(() => UpdateStatusDirect(fileState.Id, FileStatus.Modified)); |
286 |
} |
287 |
} |
288 |
} |
289 |
} |
290 |
|
291 |
|
292 |
} |
293 |
|
294 |
|
295 |
|
296 |
private int UpdateStatusDirect(Guid id, FileStatus status) |
297 |
{ |
298 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("UpdateStatusDirect")) |
299 |
{ |
300 |
|
301 |
try |
302 |
{ |
303 |
|
304 |
using (var connection = GetConnection()) |
305 |
using ( |
306 |
var command = new SQLiteCommand("update FileState set FileStatus= :fileStatus where Id = :id ", |
307 |
connection)) |
308 |
{ |
309 |
command.Parameters.AddWithValue("fileStatus", status); |
310 |
|
311 |
command.Parameters.AddWithValue("id", id); |
312 |
|
313 |
var affected = command.ExecuteNonQuery(); |
314 |
|
315 |
return affected; |
316 |
} |
317 |
|
318 |
} |
319 |
catch (Exception exc) |
320 |
{ |
321 |
Log.Error(exc.ToString()); |
322 |
throw; |
323 |
} |
324 |
} |
325 |
} |
326 |
|
327 |
private int UpdateStatusDirect(string path, FileStatus status) |
328 |
{ |
329 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("UpdateStatusDirect")) |
330 |
{ |
331 |
|
332 |
try |
333 |
{ |
334 |
|
335 |
|
336 |
using (var connection = GetConnection()) |
337 |
using ( |
338 |
var command = |
339 |
new SQLiteCommand("update FileState set FileStatus= :fileStatus where FilePath = :path COLLATE NOCASE", |
340 |
connection)) |
341 |
{ |
342 |
|
343 |
|
344 |
command.Parameters.AddWithValue("fileStatus", status); |
345 |
|
346 |
command.Parameters.AddWithValue("path", path); |
347 |
|
348 |
var affected = command.ExecuteNonQuery(); |
349 |
if (affected == 0) |
350 |
{ |
351 |
var createdState = FileState.CreateFor(FileInfoExtensions.FromPath(path)); |
352 |
createdState.FileStatus = status; |
353 |
createdState.Create(); |
354 |
} |
355 |
return affected; |
356 |
} |
357 |
} |
358 |
catch (Exception exc) |
359 |
{ |
360 |
Log.Error(exc.ToString()); |
361 |
throw; |
362 |
} |
363 |
} |
364 |
} |
365 |
|
366 |
private int UpdateStatusDirect(string absolutePath, FileStatus fileStatus, FileOverlayStatus overlayStatus, string conflictReason) |
367 |
{ |
368 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("UpdateStatusDirect")) |
369 |
{ |
370 |
|
371 |
try |
372 |
{ |
373 |
|
374 |
|
375 |
using (var connection = GetConnection()) |
376 |
using ( |
377 |
var command = |
378 |
new SQLiteCommand( |
379 |
"update FileState set OverlayStatus= :overlayStatus, FileStatus= :fileStatus,ConflictReason= :conflictReason where FilePath = :path COLLATE NOCASE ", |
380 |
connection)) |
381 |
{ |
382 |
|
383 |
command.Parameters.AddWithValue("path", absolutePath); |
384 |
command.Parameters.AddWithValue("fileStatus", fileStatus); |
385 |
command.Parameters.AddWithValue("overlayStatus", overlayStatus); |
386 |
command.Parameters.AddWithValue("conflictReason", conflictReason); |
387 |
|
388 |
var affected = command.ExecuteNonQuery(); |
389 |
if (affected == 0) |
390 |
{ |
391 |
var createdState=FileState.CreateFor(FileInfoExtensions.FromPath(absolutePath)); |
392 |
createdState.FileStatus = fileStatus; |
393 |
createdState.OverlayStatus = overlayStatus; |
394 |
createdState.ConflictReason = conflictReason; |
395 |
createdState.Create(); |
396 |
} |
397 |
return affected; |
398 |
} |
399 |
} |
400 |
catch (Exception exc) |
401 |
{ |
402 |
Log.Error(exc.ToString()); |
403 |
throw; |
404 |
} |
405 |
} |
406 |
} |
407 |
|
408 |
|
409 |
|
410 |
public string BlockHash { get; set; } |
411 |
|
412 |
public int BlockSize { get; set; } |
413 |
public void ChangeRoots(string oldPath, string newPath) |
414 |
{ |
415 |
if (String.IsNullOrWhiteSpace(oldPath)) |
416 |
throw new ArgumentNullException("oldPath"); |
417 |
if (!Path.IsPathRooted(oldPath)) |
418 |
throw new ArgumentException("oldPath must be an absolute path", "oldPath"); |
419 |
if (string.IsNullOrWhiteSpace(newPath)) |
420 |
throw new ArgumentNullException("newPath"); |
421 |
if (!Path.IsPathRooted(newPath)) |
422 |
throw new ArgumentException("newPath must be an absolute path", "newPath"); |
423 |
Contract.EndContractBlock(); |
424 |
|
425 |
FileState.ChangeRootPath(oldPath,newPath); |
426 |
|
427 |
} |
428 |
|
429 |
|
430 |
|
431 |
private readonly string _pithosDataPath; |
432 |
|
433 |
|
434 |
public FileState GetStateByFilePath(string path) |
435 |
{ |
436 |
if (String.IsNullOrWhiteSpace(path)) |
437 |
throw new ArgumentNullException("path"); |
438 |
if (!Path.IsPathRooted(path)) |
439 |
throw new ArgumentException("The path must be rooted", "path"); |
440 |
Contract.EndContractBlock(); |
441 |
|
442 |
try |
443 |
{ |
444 |
|
445 |
using (var connection = GetConnection()) |
446 |
using (var command = new SQLiteCommand("select Id, FilePath, OverlayStatus,FileStatus ,Checksum ,ShortHash,Version ,VersionTimeStamp,IsShared ,SharedBy ,ShareWrite from FileState where FilePath=:path COLLATE NOCASE", connection)) |
447 |
{ |
448 |
|
449 |
command.Parameters.AddWithValue("path", path); |
450 |
|
451 |
using (var reader = command.ExecuteReader()) |
452 |
{ |
453 |
if (reader.Read()) |
454 |
{ |
455 |
//var values = new object[reader.FieldCount]; |
456 |
//reader.GetValues(values); |
457 |
var state = new FileState |
458 |
{ |
459 |
Id = reader.GetGuid(0), |
460 |
FilePath = reader.IsDBNull(1)?"":reader.GetString(1), |
461 |
OverlayStatus =reader.IsDBNull(2)?FileOverlayStatus.Unversioned: (FileOverlayStatus) reader.GetInt64(2), |
462 |
FileStatus = reader.IsDBNull(3)?FileStatus.Missing:(FileStatus) reader.GetInt64(3), |
463 |
Checksum = reader.IsDBNull(4)?"":reader.GetString(4), |
464 |
ShortHash= reader.IsDBNull(5)?"":reader.GetString(5), |
465 |
Version = reader.IsDBNull(6)?default(long):reader.GetInt64(6), |
466 |
VersionTimeStamp = reader.IsDBNull(7)?default(DateTime):reader.GetDateTime(7), |
467 |
IsShared = !reader.IsDBNull(8) && reader.GetBoolean(8), |
468 |
SharedBy = reader.IsDBNull(9)?"":reader.GetString(9), |
469 |
ShareWrite = !reader.IsDBNull(10) && reader.GetBoolean(10) |
470 |
}; |
471 |
/* |
472 |
var state = new FileState |
473 |
{ |
474 |
Id = (Guid) values[0], |
475 |
FilePath = (string) values[1], |
476 |
OverlayStatus = (FileOverlayStatus) (long)values[2], |
477 |
FileStatus = (FileStatus) (long)values[3], |
478 |
Checksum = (string) values[4], |
479 |
Version = (long?) values[5], |
480 |
VersionTimeStamp = (DateTime?) values[6], |
481 |
IsShared = (long)values[7] == 1, |
482 |
SharedBy = (string) values[8], |
483 |
ShareWrite = (long)values[9] == 1 |
484 |
}; |
485 |
*/ |
486 |
return state; |
487 |
} |
488 |
else |
489 |
{ |
490 |
return null; |
491 |
} |
492 |
|
493 |
} |
494 |
} |
495 |
} |
496 |
catch (Exception exc) |
497 |
{ |
498 |
Log.ErrorFormat(exc.ToString()); |
499 |
throw; |
500 |
} |
501 |
} |
502 |
|
503 |
public FileOverlayStatus GetFileOverlayStatus(string path) |
504 |
{ |
505 |
if (String.IsNullOrWhiteSpace(path)) |
506 |
throw new ArgumentNullException("path"); |
507 |
if (!Path.IsPathRooted(path)) |
508 |
throw new ArgumentException("The path must be rooted", "path"); |
509 |
Contract.EndContractBlock(); |
510 |
|
511 |
try |
512 |
{ |
513 |
|
514 |
using (var connection = GetConnection()) |
515 |
using (var command = new SQLiteCommand("select OverlayStatus from FileState where FilePath=:path COLLATE NOCASE", connection)) |
516 |
{ |
517 |
|
518 |
command.Parameters.AddWithValue("path", path); |
519 |
|
520 |
var s = command.ExecuteScalar(); |
521 |
return (FileOverlayStatus) Convert.ToInt32(s); |
522 |
} |
523 |
} |
524 |
catch (Exception exc) |
525 |
{ |
526 |
Log.ErrorFormat(exc.ToString()); |
527 |
return FileOverlayStatus.Unversioned; |
528 |
} |
529 |
} |
530 |
|
531 |
private string GetConnectionString() |
532 |
{ |
533 |
var connectionString = String.Format(@"Data Source={0}\pithos.db;Version=3;Enlist=N;Pooling=True", _pithosDataPath); |
534 |
return connectionString; |
535 |
} |
536 |
|
537 |
private SQLiteConnection GetConnection() |
538 |
{ |
539 |
var connectionString = GetConnectionString(); |
540 |
var connection = new SQLiteConnection(connectionString); |
541 |
connection.Open(); |
542 |
using(var cmd =connection.CreateCommand()) |
543 |
{ |
544 |
cmd.CommandText = "PRAGMA journal_mode=WAL"; |
545 |
cmd.ExecuteNonQuery(); |
546 |
} |
547 |
return connection; |
548 |
} |
549 |
|
550 |
/* public void SetFileOverlayStatus(string path, FileOverlayStatus overlayStatus) |
551 |
{ |
552 |
if (String.IsNullOrWhiteSpace(path)) |
553 |
throw new ArgumentNullException("path"); |
554 |
if (!Path.IsPathRooted(path)) |
555 |
throw new ArgumentException("The path must be rooted","path"); |
556 |
Contract.EndContractBlock(); |
557 |
|
558 |
_persistenceAgent.Post(() => FileState.StoreOverlayStatus(path,overlayStatus)); |
559 |
}*/ |
560 |
|
561 |
public Task SetFileOverlayStatus(string path, FileOverlayStatus overlayStatus, string shortHash = null) |
562 |
{ |
563 |
if (String.IsNullOrWhiteSpace(path)) |
564 |
throw new ArgumentNullException("path"); |
565 |
if (!Path.IsPathRooted(path)) |
566 |
throw new ArgumentException("The path must be rooted","path"); |
567 |
Contract.EndContractBlock(); |
568 |
|
569 |
return _persistenceAgent.PostAndAwait(() => FileState.StoreOverlayStatus(path,overlayStatus,shortHash)); |
570 |
} |
571 |
|
572 |
/* public void RenameFileOverlayStatus(string oldPath, string newPath) |
573 |
{ |
574 |
if (String.IsNullOrWhiteSpace(oldPath)) |
575 |
throw new ArgumentNullException("oldPath"); |
576 |
if (!Path.IsPathRooted(oldPath)) |
577 |
throw new ArgumentException("The oldPath must be rooted", "oldPath"); |
578 |
if (String.IsNullOrWhiteSpace(newPath)) |
579 |
throw new ArgumentNullException("newPath"); |
580 |
if (!Path.IsPathRooted(newPath)) |
581 |
throw new ArgumentException("The newPath must be rooted", "newPath"); |
582 |
Contract.EndContractBlock(); |
583 |
|
584 |
_persistenceAgent.Post(() =>FileState.RenameState(oldPath, newPath)); |
585 |
}*/ |
586 |
|
587 |
public void SetFileState(string path, FileStatus fileStatus, FileOverlayStatus overlayStatus, string conflictReason) |
588 |
{ |
589 |
if (String.IsNullOrWhiteSpace(path)) |
590 |
throw new ArgumentNullException("path"); |
591 |
if (!Path.IsPathRooted(path)) |
592 |
throw new ArgumentException("The path must be rooted", "path"); |
593 |
Contract.EndContractBlock(); |
594 |
|
595 |
Debug.Assert(!path.Contains(FolderConstants.CacheFolder)); |
596 |
Debug.Assert(!path.EndsWith(".ignore")); |
597 |
|
598 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, fileStatus, overlayStatus, conflictReason)); |
599 |
} |
600 |
|
601 |
/* |
602 |
public void StoreInfo(string path,ObjectInfo objectInfo) |
603 |
{ |
604 |
if (String.IsNullOrWhiteSpace(path)) |
605 |
throw new ArgumentNullException("path"); |
606 |
if (!Path.IsPathRooted(path)) |
607 |
throw new ArgumentException("The path must be rooted", "path"); |
608 |
if (objectInfo == null) |
609 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
610 |
Contract.EndContractBlock(); |
611 |
|
612 |
_persistenceAgent.Post(() => |
613 |
{ |
614 |
var filePath = path.ToLower(); |
615 |
//Load the existing files state and set its properties in one session |
616 |
using (new SessionScope()) |
617 |
{ |
618 |
//Forgetting to use a sessionscope results in two sessions being created, one by |
619 |
//FirstOrDefault and one by Save() |
620 |
var state =FileState.FindByFilePath(filePath); |
621 |
|
622 |
//Create a new empty state object if this is a new file |
623 |
state = state ?? new FileState(); |
624 |
|
625 |
state.FilePath = filePath; |
626 |
state.Checksum = objectInfo.Hash; |
627 |
state.Version = objectInfo.Version; |
628 |
state.VersionTimeStamp = objectInfo.VersionTimestamp; |
629 |
|
630 |
state.FileStatus = FileStatus.Unchanged; |
631 |
state.OverlayStatus = FileOverlayStatus.Normal; |
632 |
|
633 |
|
634 |
//Do the save |
635 |
state.Save(); |
636 |
} |
637 |
}); |
638 |
|
639 |
} |
640 |
*/ |
641 |
|
642 |
public void StoreInfo(string path, ObjectInfo objectInfo) |
643 |
{ |
644 |
if (String.IsNullOrWhiteSpace(path)) |
645 |
throw new ArgumentNullException("path"); |
646 |
if (!Path.IsPathRooted(path)) |
647 |
throw new ArgumentException("The path must be rooted", "path"); |
648 |
if (objectInfo == null) |
649 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
650 |
Contract.EndContractBlock(); |
651 |
|
652 |
_persistenceAgent.Post(() => StoreInfoDirect(path, objectInfo)); |
653 |
|
654 |
} |
655 |
|
656 |
private void StoreInfoDirect(string path, ObjectInfo objectInfo) |
657 |
{ |
658 |
try |
659 |
{ |
660 |
|
661 |
using (var connection = GetConnection()) |
662 |
using (var command = new SQLiteCommand(connection)) |
663 |
{ |
664 |
if (StateExists(path, connection)) |
665 |
command.CommandText = |
666 |
"update FileState set FileStatus= :fileStatus where FilePath = :path COLLATE NOCASE "; |
667 |
else |
668 |
{ |
669 |
command.CommandText = |
670 |
"INSERT INTO FileState (Id,FilePath,Checksum,Version,VersionTimeStamp,ShortHash,FileStatus,OverlayStatus,ObjectID) VALUES (:id,:path,:checksum,:version,:versionTimeStamp,:shortHash,:fileStatus,:overlayStatus,:objectID)"; |
671 |
command.Parameters.AddWithValue("id", Guid.NewGuid()); |
672 |
} |
673 |
|
674 |
command.Parameters.AddWithValue("path", path); |
675 |
command.Parameters.AddWithValue("checksum", objectInfo.Hash); |
676 |
command.Parameters.AddWithValue("shortHash", ""); |
677 |
command.Parameters.AddWithValue("version", objectInfo.Version); |
678 |
command.Parameters.AddWithValue("versionTimeStamp", objectInfo.VersionTimestamp); |
679 |
command.Parameters.AddWithValue("fileStatus", FileStatus.Unchanged); |
680 |
command.Parameters.AddWithValue("overlayStatus", FileOverlayStatus.Normal); |
681 |
command.Parameters.AddWithValue("objectID",objectInfo.UUID); |
682 |
|
683 |
var affected = command.ExecuteNonQuery(); |
684 |
return; |
685 |
} |
686 |
} |
687 |
catch (Exception exc) |
688 |
{ |
689 |
Log.Error(exc.ToString()); |
690 |
throw; |
691 |
} |
692 |
} |
693 |
|
694 |
private bool StateExists(string filePath,SQLiteConnection connection) |
695 |
{ |
696 |
using (var command = new SQLiteCommand("Select count(*) from FileState where FilePath=:path COLLATE NOCASE", connection)) |
697 |
{ |
698 |
command.Parameters.AddWithValue("path", filePath); |
699 |
var result = command.ExecuteScalar(); |
700 |
return ((long)result >= 1); |
701 |
} |
702 |
|
703 |
} |
704 |
|
705 |
public void SetFileStatus(string path, FileStatus status) |
706 |
{ |
707 |
if (String.IsNullOrWhiteSpace(path)) |
708 |
throw new ArgumentNullException("path"); |
709 |
if (!Path.IsPathRooted(path)) |
710 |
throw new ArgumentException("The path must be rooted", "path"); |
711 |
Contract.EndContractBlock(); |
712 |
|
713 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, status)); |
714 |
} |
715 |
|
716 |
public FileStatus GetFileStatus(string path) |
717 |
{ |
718 |
if (String.IsNullOrWhiteSpace(path)) |
719 |
throw new ArgumentNullException("path"); |
720 |
if (!Path.IsPathRooted(path)) |
721 |
throw new ArgumentException("The path must be rooted", "path"); |
722 |
Contract.EndContractBlock(); |
723 |
|
724 |
|
725 |
using (var connection = GetConnection()) |
726 |
{ |
727 |
var command = new SQLiteCommand("select FileStatus from FileState where FilePath=:path COLLATE NOCASE", connection); |
728 |
command.Parameters.AddWithValue("path", path); |
729 |
|
730 |
var statusValue = command.ExecuteScalar(); |
731 |
if (statusValue==null) |
732 |
return FileStatus.Missing; |
733 |
return (FileStatus)Convert.ToInt32(statusValue); |
734 |
} |
735 |
} |
736 |
|
737 |
/// <summary> |
738 |
/// Deletes the status of the specified file |
739 |
/// </summary> |
740 |
/// <param name="path"></param> |
741 |
public void ClearFileStatus(string path) |
742 |
{ |
743 |
if (String.IsNullOrWhiteSpace(path)) |
744 |
throw new ArgumentNullException("path"); |
745 |
if (!Path.IsPathRooted(path)) |
746 |
throw new ArgumentException("The path must be rooted", "path"); |
747 |
Contract.EndContractBlock(); |
748 |
|
749 |
_persistenceAgent.Post(() => DeleteDirect(path)); |
750 |
} |
751 |
|
752 |
/// <summary> |
753 |
/// Deletes the status of the specified folder and all its contents |
754 |
/// </summary> |
755 |
/// <param name="path"></param> |
756 |
public void ClearFolderStatus(string path) |
757 |
{ |
758 |
if (String.IsNullOrWhiteSpace(path)) |
759 |
throw new ArgumentNullException("path"); |
760 |
if (!Path.IsPathRooted(path)) |
761 |
throw new ArgumentException("The path must be rooted", "path"); |
762 |
Contract.EndContractBlock(); |
763 |
//TODO: May throw if the agent is cleared for some reason. Should never happen |
764 |
_persistenceAgent.Post(() => DeleteFolderDirect(path)); |
765 |
} |
766 |
|
767 |
public IEnumerable<FileState> GetChildren(FileState fileState) |
768 |
{ |
769 |
if (fileState == null) |
770 |
throw new ArgumentNullException("fileState"); |
771 |
Contract.EndContractBlock(); |
772 |
|
773 |
var children = from state in FileState.Queryable |
774 |
where state.FilePath.StartsWith(fileState.FilePath + "\\") |
775 |
select state; |
776 |
return children; |
777 |
} |
778 |
|
779 |
public void EnsureFileState(string path) |
780 |
{ |
781 |
var existingState = GetStateByFilePath(path); |
782 |
if (existingState != null) |
783 |
return; |
784 |
var fileInfo = FileInfoExtensions.FromPath(path); |
785 |
using (new SessionScope()) |
786 |
{ |
787 |
var newState = FileState.CreateFor(fileInfo); |
788 |
newState.FileStatus=FileStatus.Missing; |
789 |
_persistenceAgent.PostAndAwait(newState.CreateAndFlush).Wait(); |
790 |
} |
791 |
|
792 |
} |
793 |
|
794 |
private int DeleteDirect(string filePath) |
795 |
{ |
796 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
797 |
{ |
798 |
|
799 |
try |
800 |
{ |
801 |
|
802 |
|
803 |
using (var connection = GetConnection()) |
804 |
{ |
805 |
var command = new SQLiteCommand("delete from FileState where FilePath = :path COLLATE NOCASE", |
806 |
connection); |
807 |
|
808 |
command.Parameters.AddWithValue("path", filePath); |
809 |
|
810 |
var affected = command.ExecuteNonQuery(); |
811 |
return affected; |
812 |
} |
813 |
} |
814 |
catch (Exception exc) |
815 |
{ |
816 |
Log.Error(exc.ToString()); |
817 |
throw; |
818 |
} |
819 |
} |
820 |
} |
821 |
|
822 |
private int DeleteFolderDirect(string filePath) |
823 |
{ |
824 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
825 |
{ |
826 |
|
827 |
try |
828 |
{ |
829 |
|
830 |
|
831 |
using (var connection = GetConnection()) |
832 |
{ |
833 |
var command = new SQLiteCommand(@"delete from FileState where FilePath = :path or FilePath like :path || '\%' COLLATE NOCASE", |
834 |
connection); |
835 |
|
836 |
command.Parameters.AddWithValue("path", filePath); |
837 |
|
838 |
var affected = command.ExecuteNonQuery(); |
839 |
return affected; |
840 |
} |
841 |
} |
842 |
catch (Exception exc) |
843 |
{ |
844 |
Log.Error(exc.ToString()); |
845 |
throw; |
846 |
} |
847 |
} |
848 |
} |
849 |
|
850 |
public void UpdateFileChecksum(string path, string shortHash, string checksum) |
851 |
{ |
852 |
if (String.IsNullOrWhiteSpace(path)) |
853 |
throw new ArgumentNullException("path"); |
854 |
if (!Path.IsPathRooted(path)) |
855 |
throw new ArgumentException("The path must be rooted", "path"); |
856 |
Contract.EndContractBlock(); |
857 |
|
858 |
_persistenceAgent.Post(() => FileState.UpdateChecksum(path, shortHash,checksum)); |
859 |
} |
860 |
|
861 |
|
862 |
public void CleanupOrphanStates() |
863 |
{ |
864 |
//Orphan states are those that do not correspond to an account, ie. their paths |
865 |
//do not start with the root path of any registered account |
866 |
|
867 |
var roots=(from account in Settings.Accounts |
868 |
select account.RootPath).ToList(); |
869 |
|
870 |
var allStates = from state in FileState.Queryable |
871 |
select state.FilePath; |
872 |
|
873 |
foreach (var statePath in allStates) |
874 |
{ |
875 |
if (!roots.Any(root=>statePath.StartsWith(root,StringComparison.InvariantCultureIgnoreCase))) |
876 |
this.DeleteDirect(statePath); |
877 |
} |
878 |
} |
879 |
|
880 |
public void CleanupStaleStates(AccountInfo accountInfo, List<ObjectInfo> objectInfos) |
881 |
{ |
882 |
if (accountInfo == null) |
883 |
throw new ArgumentNullException("accountInfo"); |
884 |
if (objectInfos == null) |
885 |
throw new ArgumentNullException("objectInfos"); |
886 |
Contract.EndContractBlock(); |
887 |
|
888 |
|
889 |
|
890 |
//Stale states are those that have no corresponding local or server file |
891 |
|
892 |
|
893 |
var agent=FileAgent.GetFileAgent(accountInfo); |
894 |
|
895 |
var localFiles=agent.EnumerateFiles(); |
896 |
var localSet = new HashSet<string>(localFiles); |
897 |
|
898 |
//RelativeUrlToFilePath will fail for |
899 |
//infos of accounts, containers which have no Name |
900 |
|
901 |
var serverFiles = from info in objectInfos |
902 |
where info.Name != null |
903 |
select Path.Combine(accountInfo.AccountPath,info.RelativeUrlToFilePath(accountInfo.UserName)); |
904 |
var serverSet = new HashSet<string>(serverFiles); |
905 |
|
906 |
var allStates = from state in FileState.Queryable |
907 |
where state.FilePath.StartsWith(agent.RootPath) |
908 |
select state.FilePath; |
909 |
var stateSet = new HashSet<string>(allStates); |
910 |
stateSet.ExceptWith(serverSet); |
911 |
stateSet.ExceptWith(localSet); |
912 |
|
913 |
foreach (var remainder in stateSet) |
914 |
{ |
915 |
DeleteDirect(remainder); |
916 |
} |
917 |
|
918 |
|
919 |
} |
920 |
} |
921 |
|
922 |
|
923 |
} |