root / trunk / Pithos.Core / Agents / NetworkAgent.cs @ 039a89e5
History | View | Annotate | Download (49.9 kB)
1 |
// ----------------------------------------------------------------------- |
---|---|
2 |
// <copyright file="NetworkAgent.cs" company="GRNET"> |
3 |
// Copyright 2011 GRNET S.A. All rights reserved. |
4 |
// |
5 |
// Redistribution and use in source and binary forms, with or |
6 |
// without modification, are permitted provided that the following |
7 |
// conditions are met: |
8 |
// |
9 |
// 1. Redistributions of source code must retain the above |
10 |
// copyright notice, this list of conditions and the following |
11 |
// disclaimer. |
12 |
// |
13 |
// 2. Redistributions in binary form must reproduce the above |
14 |
// copyright notice, this list of conditions and the following |
15 |
// disclaimer in the documentation and/or other materials |
16 |
// provided with the distribution. |
17 |
// |
18 |
// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
19 |
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
20 |
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
21 |
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
22 |
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
23 |
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
24 |
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
25 |
// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
26 |
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 |
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
28 |
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 |
// POSSIBILITY OF SUCH DAMAGE. |
30 |
// |
31 |
// The views and conclusions contained in the software and |
32 |
// documentation are those of the authors and should not be |
33 |
// interpreted as representing official policies, either expressed |
34 |
// or implied, of GRNET S.A. |
35 |
// </copyright> |
36 |
// ----------------------------------------------------------------------- |
37 |
|
38 |
using System; |
39 |
using System.Collections.Concurrent; |
40 |
using System.Collections.Generic; |
41 |
using System.ComponentModel.Composition; |
42 |
using System.Diagnostics; |
43 |
using System.Diagnostics.Contracts; |
44 |
using System.IO; |
45 |
using System.Linq; |
46 |
using System.Net; |
47 |
using System.Threading.Tasks; |
48 |
using Castle.ActiveRecord; |
49 |
using Pithos.Interfaces; |
50 |
using Pithos.Network; |
51 |
using log4net; |
52 |
|
53 |
namespace Pithos.Core.Agents |
54 |
{ |
55 |
//TODO: Ensure all network operations use exact casing. Pithos is case sensitive |
56 |
[Export] |
57 |
public class NetworkAgent |
58 |
{ |
59 |
private Agent<CloudAction> _agent; |
60 |
|
61 |
//A separate agent is used to execute delete actions immediatelly; |
62 |
private Agent<CloudDeleteAction> _deleteAgent; |
63 |
ConcurrentDictionary<string,DateTime> _deletedFiles=new ConcurrentDictionary<string, DateTime>(); |
64 |
|
65 |
[System.ComponentModel.Composition.Import] |
66 |
public IStatusKeeper StatusKeeper { get; set; } |
67 |
|
68 |
public IStatusNotification StatusNotification { get; set; } |
69 |
|
70 |
private static readonly ILog Log = LogManager.GetLogger("NetworkAgent"); |
71 |
|
72 |
private readonly ConcurrentBag<AccountInfo> _accounts = new ConcurrentBag<AccountInfo>(); |
73 |
|
74 |
public void Start() |
75 |
{ |
76 |
|
77 |
_agent = Agent<CloudAction>.Start(inbox => |
78 |
{ |
79 |
Action loop = null; |
80 |
loop = () => |
81 |
{ |
82 |
var message = inbox.Receive(); |
83 |
var process=message.Then(Process,inbox.CancellationToken); |
84 |
inbox.LoopAsync(process, loop); |
85 |
}; |
86 |
loop(); |
87 |
}); |
88 |
|
89 |
_deleteAgent = Agent<CloudDeleteAction>.Start(inbox => |
90 |
{ |
91 |
Action loop = null; |
92 |
loop = () => |
93 |
{ |
94 |
var message = inbox.Receive(); |
95 |
var process = message.Then(ProcessDelete,inbox.CancellationToken); |
96 |
inbox.LoopAsync(process, loop); |
97 |
}; |
98 |
loop(); |
99 |
|
100 |
}); |
101 |
} |
102 |
|
103 |
private async Task Process(CloudAction action) |
104 |
{ |
105 |
if (action == null) |
106 |
throw new ArgumentNullException("action"); |
107 |
if (action.AccountInfo==null) |
108 |
throw new ArgumentException("The action.AccountInfo is empty","action"); |
109 |
Contract.EndContractBlock(); |
110 |
|
111 |
var accountInfo = action.AccountInfo; |
112 |
|
113 |
using (log4net.ThreadContext.Stacks["NETWORK"].Push("PROCESS")) |
114 |
{ |
115 |
Log.InfoFormat("[ACTION] Start Processing {0}", action); |
116 |
|
117 |
var cloudFile = action.CloudFile; |
118 |
var downloadPath = action.GetDownloadPath(); |
119 |
|
120 |
try |
121 |
{ |
122 |
|
123 |
switch (action.Action) |
124 |
{ |
125 |
case CloudActionType.UploadUnconditional: |
126 |
//Abort if the file was deleted before we reached this point |
127 |
if (!IsDeletedFile(action)) |
128 |
await UploadCloudFile(action); |
129 |
break; |
130 |
case CloudActionType.DownloadUnconditional: |
131 |
if (!IsDeletedFile(action)) |
132 |
await DownloadCloudFile(accountInfo, cloudFile, downloadPath); |
133 |
break; |
134 |
case CloudActionType.DeleteCloud: |
135 |
//Redirect deletes to the delete agent |
136 |
_deleteAgent.Post((CloudDeleteAction)action); |
137 |
break; |
138 |
case CloudActionType.RenameCloud: |
139 |
var moveAction = (CloudMoveAction)action; |
140 |
if (!IsDeletedFile(action)) |
141 |
RenameCloudFile(accountInfo, moveAction); |
142 |
break; |
143 |
case CloudActionType.MustSynch: |
144 |
if (!File.Exists(downloadPath) && !Directory.Exists(downloadPath)) |
145 |
{ |
146 |
if (!IsDeletedFile(action)) |
147 |
await DownloadCloudFile(accountInfo, cloudFile, downloadPath); |
148 |
} |
149 |
else |
150 |
{ |
151 |
if (!IsDeletedFile(action)) |
152 |
await SyncFiles(accountInfo, action); |
153 |
} |
154 |
break; |
155 |
} |
156 |
Log.InfoFormat("[ACTION] End Processing {0}:{1}->{2}", action.Action, action.LocalFile, |
157 |
action.CloudFile.Name); |
158 |
} |
159 |
catch (WebException exc) |
160 |
{ |
161 |
Log.ErrorFormat("[WEB ERROR] {0} : {1} -> {2} due to exception\r\n{3}", action.Action, action.LocalFile, action.CloudFile, exc); |
162 |
} |
163 |
catch (OperationCanceledException) |
164 |
{ |
165 |
throw; |
166 |
} |
167 |
catch (DirectoryNotFoundException) |
168 |
{ |
169 |
Log.ErrorFormat("{0} : {1} -> {2} failed because the directory was not found.\n Rescheduling a delete", |
170 |
action.Action, action.LocalFile, action.CloudFile); |
171 |
//Post a delete action for the missing file |
172 |
Post(new CloudDeleteAction(action)); |
173 |
} |
174 |
catch (FileNotFoundException) |
175 |
{ |
176 |
Log.ErrorFormat("{0} : {1} -> {2} failed because the file was not found.\n Rescheduling a delete", |
177 |
action.Action, action.LocalFile, action.CloudFile); |
178 |
//Post a delete action for the missing file |
179 |
Post(new CloudDeleteAction(action)); |
180 |
} |
181 |
catch (Exception exc) |
182 |
{ |
183 |
Log.ErrorFormat("[REQUEUE] {0} : {1} -> {2} due to exception\r\n{3}", |
184 |
action.Action, action.LocalFile, action.CloudFile, exc); |
185 |
|
186 |
_agent.Post(action); |
187 |
} |
188 |
} |
189 |
} |
190 |
|
191 |
/// <summary> |
192 |
/// Processes cloud delete actions |
193 |
/// </summary> |
194 |
/// <param name="action">The delete action to execute</param> |
195 |
/// <returns></returns> |
196 |
/// <remarks> |
197 |
/// When a file/folder is deleted locally, we must delete it ASAP from the server and block any download |
198 |
/// operations that may be in progress. |
199 |
/// <para> |
200 |
/// A separate agent is used to process deletes because the main agent may be busy with a long operation. |
201 |
/// </para> |
202 |
/// </remarks> |
203 |
private async Task ProcessDelete(CloudDeleteAction action) |
204 |
{ |
205 |
if (action == null) |
206 |
throw new ArgumentNullException("action"); |
207 |
if (action.AccountInfo==null) |
208 |
throw new ArgumentException("The action.AccountInfo is empty","action"); |
209 |
Contract.EndContractBlock(); |
210 |
|
211 |
var accountInfo = action.AccountInfo; |
212 |
|
213 |
using (log4net.ThreadContext.Stacks["NETWORK"].Push("PROCESS")) |
214 |
{ |
215 |
Log.InfoFormat("[ACTION] Start Processing {0}", action); |
216 |
|
217 |
var cloudFile = action.CloudFile; |
218 |
|
219 |
try |
220 |
{ |
221 |
//Acquire a lock on the deleted file to prevent uploading/downloading operations from the normal |
222 |
//agent |
223 |
using (var gate = NetworkGate.Acquire(action.LocalFile.FullName, NetworkOperation.Deleting)) |
224 |
{ |
225 |
|
226 |
//Add the file URL to the deleted files list |
227 |
var key = GetFileKey(action.CloudFile); |
228 |
_deletedFiles[key]=DateTime.Now; |
229 |
|
230 |
// and then delete the file from the server |
231 |
DeleteCloudFile(accountInfo, cloudFile); |
232 |
Log.InfoFormat("[ACTION] End Delete {0}:{1}->{2}", action.Action, action.LocalFile, |
233 |
action.CloudFile.Name); |
234 |
} |
235 |
} |
236 |
catch (WebException exc) |
237 |
{ |
238 |
Log.ErrorFormat("[WEB ERROR] {0} : {1} -> {2} due to exception\r\n{3}", action.Action, action.LocalFile, action.CloudFile, exc); |
239 |
} |
240 |
catch (OperationCanceledException) |
241 |
{ |
242 |
throw; |
243 |
} |
244 |
catch (DirectoryNotFoundException) |
245 |
{ |
246 |
Log.ErrorFormat("{0} : {1} -> {2} failed because the directory was not found.\n Rescheduling a delete", |
247 |
action.Action, action.LocalFile, action.CloudFile); |
248 |
//Repost a delete action for the missing file |
249 |
_deleteAgent.Post(action); |
250 |
} |
251 |
catch (FileNotFoundException) |
252 |
{ |
253 |
Log.ErrorFormat("{0} : {1} -> {2} failed because the file was not found.\n Rescheduling a delete", |
254 |
action.Action, action.LocalFile, action.CloudFile); |
255 |
//Post a delete action for the missing file |
256 |
_deleteAgent.Post(action); |
257 |
} |
258 |
catch (Exception exc) |
259 |
{ |
260 |
Log.ErrorFormat("[REQUEUE] {0} : {1} -> {2} due to exception\r\n{3}", |
261 |
action.Action, action.LocalFile, action.CloudFile, exc); |
262 |
|
263 |
_deleteAgent.Post(action); |
264 |
} |
265 |
} |
266 |
} |
267 |
|
268 |
private static string GetFileKey(ObjectInfo info) |
269 |
{ |
270 |
var key = String.Format("{0}/{1}/{2}", info.Account, info.Container,info.Name); |
271 |
return key; |
272 |
} |
273 |
|
274 |
private async Task SyncFiles(AccountInfo accountInfo,CloudAction action) |
275 |
{ |
276 |
if (accountInfo == null) |
277 |
throw new ArgumentNullException("accountInfo"); |
278 |
if (action==null) |
279 |
throw new ArgumentNullException("action"); |
280 |
if (action.LocalFile==null) |
281 |
throw new ArgumentException("The action's local file is not specified","action"); |
282 |
if (!Path.IsPathRooted(action.LocalFile.FullName)) |
283 |
throw new ArgumentException("The action's local file path must be absolute","action"); |
284 |
if (action.CloudFile== null) |
285 |
throw new ArgumentException("The action's cloud file is not specified", "action"); |
286 |
Contract.EndContractBlock(); |
287 |
|
288 |
var localFile = action.LocalFile; |
289 |
var cloudFile = action.CloudFile; |
290 |
var downloadPath=action.LocalFile.GetProperCapitalization(); |
291 |
|
292 |
var cloudHash = cloudFile.Hash.ToLower(); |
293 |
var localHash = action.LocalHash.Value.ToLower(); |
294 |
var topHash = action.TopHash.Value.ToLower(); |
295 |
|
296 |
//Not enough to compare only the local hashes, also have to compare the tophashes |
297 |
|
298 |
//If any of the hashes match, we are done |
299 |
if ((cloudHash == localHash || cloudHash == topHash)) |
300 |
{ |
301 |
Log.InfoFormat("Skipping {0}, hashes match",downloadPath); |
302 |
return; |
303 |
} |
304 |
|
305 |
//The hashes DON'T match. We need to sync |
306 |
var lastLocalTime = localFile.LastWriteTime; |
307 |
var lastUpTime = cloudFile.Last_Modified; |
308 |
|
309 |
//If the local file is newer upload it |
310 |
if (lastUpTime <= lastLocalTime) |
311 |
{ |
312 |
//It probably means it was changed while the app was down |
313 |
UploadCloudFile(action); |
314 |
} |
315 |
else |
316 |
{ |
317 |
//It the cloud file has a later date, it was modified by another user or computer. |
318 |
//We need to check the local file's status |
319 |
var status = StatusKeeper.GetFileStatus(downloadPath); |
320 |
switch (status) |
321 |
{ |
322 |
case FileStatus.Unchanged: |
323 |
//If the local file's status is Unchanged, we can go on and download the newer cloud file |
324 |
await DownloadCloudFile(accountInfo,cloudFile,downloadPath); |
325 |
break; |
326 |
case FileStatus.Modified: |
327 |
//If the local file is Modified, we may have a conflict. In this case we should mark the file as Conflict |
328 |
//We can't ensure that a file modified online since the last time will appear as Modified, unless we |
329 |
//index all files before we start listening. |
330 |
case FileStatus.Created: |
331 |
//If the local file is Created, it means that the local and cloud files aren't related, |
332 |
// yet they have the same name. |
333 |
|
334 |
//In both cases we must mark the file as in conflict |
335 |
ReportConflict(downloadPath); |
336 |
break; |
337 |
default: |
338 |
//Other cases should never occur. Mark them as Conflict as well but log a warning |
339 |
ReportConflict(downloadPath); |
340 |
Log.WarnFormat("Unexcepted status {0} for file {1}->{2}", status, |
341 |
downloadPath, action.CloudFile.Name); |
342 |
break; |
343 |
} |
344 |
} |
345 |
} |
346 |
|
347 |
private void ReportConflict(string downloadPath) |
348 |
{ |
349 |
if (String.IsNullOrWhiteSpace(downloadPath)) |
350 |
throw new ArgumentNullException("downloadPath"); |
351 |
Contract.EndContractBlock(); |
352 |
|
353 |
StatusKeeper.SetFileOverlayStatus(downloadPath, FileOverlayStatus.Conflict); |
354 |
var message = String.Format("Conflict detected for file {0}", downloadPath); |
355 |
Log.Warn(message); |
356 |
StatusNotification.NotifyChange(message, TraceLevel.Warning); |
357 |
} |
358 |
|
359 |
public void Post(CloudAction cloudAction) |
360 |
{ |
361 |
if (cloudAction == null) |
362 |
throw new ArgumentNullException("cloudAction"); |
363 |
if (cloudAction.AccountInfo==null) |
364 |
throw new ArgumentException("The CloudAction.AccountInfo is empty","cloudAction"); |
365 |
Contract.EndContractBlock(); |
366 |
|
367 |
//If the action targets a local file, add a treehash calculation |
368 |
if (!(cloudAction is CloudDeleteAction) && cloudAction.LocalFile as FileInfo != null) |
369 |
{ |
370 |
var accountInfo = cloudAction.AccountInfo; |
371 |
var localFile = (FileInfo) cloudAction.LocalFile; |
372 |
if (localFile.Length > accountInfo.BlockSize) |
373 |
cloudAction.TopHash = |
374 |
new Lazy<string>(() => Signature.CalculateTreeHashAsync(localFile, |
375 |
accountInfo.BlockSize, |
376 |
accountInfo.BlockHash).Result |
377 |
.TopHash.ToHashString()); |
378 |
else |
379 |
{ |
380 |
cloudAction.TopHash = new Lazy<string>(() => cloudAction.LocalHash.Value); |
381 |
} |
382 |
} |
383 |
else |
384 |
{ |
385 |
//The hash for a directory is the empty string |
386 |
cloudAction.TopHash = new Lazy<string>(() => String.Empty); |
387 |
} |
388 |
|
389 |
if (cloudAction is CloudDeleteAction) |
390 |
_deleteAgent.Post((CloudDeleteAction)cloudAction); |
391 |
else |
392 |
_agent.Post(cloudAction); |
393 |
} |
394 |
|
395 |
/* class ObjectInfoByNameComparer:IEqualityComparer<ObjectInfo> |
396 |
{ |
397 |
public bool Equals(ObjectInfo x, ObjectInfo y) |
398 |
{ |
399 |
return x.Name.Equals(y.Name,StringComparison.InvariantCultureIgnoreCase); |
400 |
} |
401 |
|
402 |
public int GetHashCode(ObjectInfo obj) |
403 |
{ |
404 |
return obj.Name.ToLower().GetHashCode(); |
405 |
} |
406 |
}*/ |
407 |
|
408 |
|
409 |
|
410 |
//Remote files are polled periodically. Any changes are processed |
411 |
public async Task ProcessRemoteFiles(DateTime? since = null) |
412 |
{ |
413 |
await TaskEx.Delay(TimeSpan.FromSeconds(10),_agent.CancellationToken); |
414 |
|
415 |
using (log4net.ThreadContext.Stacks["Retrieve Remote"].Push("All accounts")) |
416 |
{ |
417 |
|
418 |
try |
419 |
{ |
420 |
//Next time we will check for all changes since the current check minus 1 second |
421 |
//This is done to ensure there are no discrepancies due to clock differences |
422 |
DateTime nextSince = DateTime.Now.AddSeconds(-1); |
423 |
|
424 |
var tasks = from accountInfo in _accounts |
425 |
select ProcessAccountFiles(accountInfo, since); |
426 |
|
427 |
await TaskEx.WhenAll(tasks.ToList()); |
428 |
|
429 |
ProcessRemoteFiles(nextSince); |
430 |
} |
431 |
catch (Exception ex) |
432 |
{ |
433 |
Log.ErrorFormat("Error while processing accounts\r\n{0}",ex); |
434 |
//In case of failure retry with the same parameter |
435 |
ProcessRemoteFiles(since); |
436 |
} |
437 |
|
438 |
|
439 |
} |
440 |
} |
441 |
|
442 |
public async Task ProcessAccountFiles(AccountInfo accountInfo,DateTime? since=null) |
443 |
{ |
444 |
if (accountInfo==null) |
445 |
throw new ArgumentNullException("accountInfo"); |
446 |
if (String.IsNullOrWhiteSpace(accountInfo.AccountPath)) |
447 |
throw new ArgumentException("The AccountInfo.AccountPath is empty","accountInfo"); |
448 |
Contract.EndContractBlock(); |
449 |
|
450 |
using (log4net.ThreadContext.Stacks["Retrieve Remote"].Push(accountInfo.UserName)) |
451 |
{ |
452 |
Log.Info("Scheduled"); |
453 |
var client=new CloudFilesClient(accountInfo); |
454 |
|
455 |
var containers = client.ListContainers(accountInfo.UserName); |
456 |
|
457 |
CreateContainerFolders(accountInfo, containers); |
458 |
|
459 |
try |
460 |
{ |
461 |
|
462 |
//Get the list of server objects changed since the last check |
463 |
//The name of the container is passed as state in order to create a dictionary of tasks in a subsequent step |
464 |
var listObjects = from container in containers |
465 |
select Task<IList<ObjectInfo>>.Factory.StartNew(_ => |
466 |
client.ListObjects(accountInfo.UserName,container.Name, since),container.Name); |
467 |
|
468 |
|
469 |
var listTasks = await Task.Factory.WhenAll(listObjects.ToArray()); |
470 |
|
471 |
using (log4net.ThreadContext.Stacks["SCHEDULE"].Push("Process Results")) |
472 |
{ |
473 |
var dict = listTasks.ToDictionary(t => t.AsyncState); |
474 |
|
475 |
//Get all non-trash objects. Remember, the container name is stored in AsyncState |
476 |
var remoteObjects = from objectList in listTasks |
477 |
where (string) objectList.AsyncState != "trash" |
478 |
from obj in objectList.Result |
479 |
select obj; |
480 |
|
481 |
var trashObjects = dict["trash"].Result; |
482 |
//var sharedObjects = ((Task<IList<ObjectInfo>>) task.Result[2]).Result; |
483 |
|
484 |
//Items with the same name, hash may be both in the container and the trash |
485 |
//Don't delete items that exist in the container |
486 |
var realTrash = from trash in trashObjects |
487 |
where |
488 |
!remoteObjects.Any( |
489 |
info => info.Name == trash.Name && info.Hash == trash.Hash) |
490 |
select trash; |
491 |
ProcessDeletedFiles(accountInfo, realTrash); |
492 |
|
493 |
|
494 |
var remote = from info in remoteObjects |
495 |
//.Union(sharedObjects) |
496 |
let name = info.Name |
497 |
where !name.EndsWith(".ignore", StringComparison.InvariantCultureIgnoreCase) && |
498 |
!name.StartsWith(FolderConstants.CacheFolder + "/", |
499 |
StringComparison.InvariantCultureIgnoreCase) |
500 |
select info; |
501 |
|
502 |
//Create a list of actions from the remote files |
503 |
var allActions = ObjectsToActions(accountInfo, remote); |
504 |
|
505 |
//And remove those that are already being processed by the agent |
506 |
var distinctActions = allActions |
507 |
.Except(_agent.GetEnumerable(), new PithosMonitor.LocalFileComparer()) |
508 |
.ToList(); |
509 |
|
510 |
//Queue all the actions |
511 |
foreach (var message in distinctActions) |
512 |
{ |
513 |
Post(message); |
514 |
} |
515 |
|
516 |
Log.Info("[LISTENER] End Processing"); |
517 |
} |
518 |
} |
519 |
catch (Exception ex) |
520 |
{ |
521 |
Log.ErrorFormat("[FAIL] ListObjects for{0} in ProcessRemoteFiles with {1}", accountInfo.UserName, ex); |
522 |
return; |
523 |
} |
524 |
|
525 |
Log.Info("[LISTENER] Finished"); |
526 |
|
527 |
} |
528 |
} |
529 |
|
530 |
private static void CreateContainerFolders(AccountInfo accountInfo, IEnumerable<ContainerInfo> containers) |
531 |
{ |
532 |
var containerPaths = from container in containers |
533 |
let containerPath = Path.Combine(accountInfo.AccountPath, container.Name) |
534 |
where container.Name != FolderConstants.TrashContainer && !Directory.Exists(containerPath) |
535 |
select containerPath; |
536 |
|
537 |
foreach (var path in containerPaths) |
538 |
{ |
539 |
Directory.CreateDirectory(path); |
540 |
} |
541 |
} |
542 |
|
543 |
//Creates an appropriate action for each server file |
544 |
private IEnumerable<CloudAction> ObjectsToActions(AccountInfo accountInfo,IEnumerable<ObjectInfo> remote) |
545 |
{ |
546 |
if (remote==null) |
547 |
throw new ArgumentNullException(); |
548 |
Contract.EndContractBlock(); |
549 |
var fileAgent = GetFileAgent(accountInfo); |
550 |
|
551 |
//In order to avoid multiple iterations over the files, we iterate only once |
552 |
//over the remote files |
553 |
foreach (var objectInfo in remote) |
554 |
{ |
555 |
var relativePath = objectInfo.RelativeUrlToFilePath(accountInfo.UserName); |
556 |
//and remove any matching objects from the list, adding them to the commonObjects list |
557 |
|
558 |
if (fileAgent.Exists(relativePath)) |
559 |
{ |
560 |
//If a directory object already exists, we don't need to perform any other action |
561 |
var localFile = fileAgent.GetFileSystemInfo(relativePath); |
562 |
if (objectInfo.Content_Type == @"application/directory" && localFile is DirectoryInfo) |
563 |
continue; |
564 |
using (new SessionScope(FlushAction.Never)) |
565 |
{ |
566 |
var state = StatusKeeper.GetStateByFilePath(localFile.FullName); |
567 |
//FileState.FindByFilePath(localFile.FullName); |
568 |
//Common files should be checked on a per-case basis to detect differences, which is newer |
569 |
|
570 |
yield return new CloudAction(accountInfo, CloudActionType.MustSynch, |
571 |
localFile, objectInfo, state, accountInfo.BlockSize, |
572 |
accountInfo.BlockHash); |
573 |
} |
574 |
} |
575 |
else |
576 |
{ |
577 |
//If there is no match we add them to the localFiles list |
578 |
//but only if the file is not marked for deletion |
579 |
var targetFile = Path.Combine(accountInfo.AccountPath, relativePath); |
580 |
var fileStatus = StatusKeeper.GetFileStatus(targetFile); |
581 |
if (fileStatus != FileStatus.Deleted) |
582 |
{ |
583 |
//Remote files should be downloaded |
584 |
yield return new CloudDownloadAction(accountInfo,objectInfo); |
585 |
} |
586 |
} |
587 |
} |
588 |
} |
589 |
|
590 |
private static FileAgent GetFileAgent(AccountInfo accountInfo) |
591 |
{ |
592 |
return AgentLocator<FileAgent>.Get(accountInfo.AccountPath); |
593 |
} |
594 |
|
595 |
private void ProcessDeletedFiles(AccountInfo accountInfo,IEnumerable<ObjectInfo> trashObjects) |
596 |
{ |
597 |
var fileAgent = GetFileAgent(accountInfo); |
598 |
foreach (var trashObject in trashObjects) |
599 |
{ |
600 |
var barePath = trashObject.RelativeUrlToFilePath(accountInfo.UserName); |
601 |
//HACK: Assume only the "pithos" container is used. Must find out what happens when |
602 |
//deleting a file from a different container |
603 |
var relativePath = Path.Combine("pithos", barePath); |
604 |
fileAgent.Delete(relativePath); |
605 |
} |
606 |
} |
607 |
|
608 |
|
609 |
private void RenameCloudFile(AccountInfo accountInfo,CloudMoveAction action) |
610 |
{ |
611 |
if (accountInfo==null) |
612 |
throw new ArgumentNullException("accountInfo"); |
613 |
if (action==null) |
614 |
throw new ArgumentNullException("action"); |
615 |
if (action.CloudFile==null) |
616 |
throw new ArgumentException("CloudFile","action"); |
617 |
if (action.LocalFile==null) |
618 |
throw new ArgumentException("LocalFile","action"); |
619 |
if (action.OldLocalFile==null) |
620 |
throw new ArgumentException("OldLocalFile","action"); |
621 |
if (action.OldCloudFile==null) |
622 |
throw new ArgumentException("OldCloudFile","action"); |
623 |
Contract.EndContractBlock(); |
624 |
|
625 |
|
626 |
var newFilePath = action.LocalFile.FullName; |
627 |
|
628 |
//How do we handle concurrent renames and deletes/uploads/downloads? |
629 |
//* A conflicting upload means that a file was renamed before it had a chance to finish uploading |
630 |
// This should never happen as the network agent executes only one action at a time |
631 |
//* A conflicting download means that the file was modified on the cloud. While we can go on and complete |
632 |
// the rename, there may be a problem if the file is downloaded in blocks, as subsequent block requests for the |
633 |
// same name will fail. |
634 |
// This should never happen as the network agent executes only one action at a time. |
635 |
//* A conflicting delete can happen if the rename was followed by a delete action that didn't have the chance |
636 |
// to remove the rename from the queue. |
637 |
// We can probably ignore this case. It will result in an error which should be ignored |
638 |
|
639 |
|
640 |
//The local file is already renamed |
641 |
StatusKeeper.SetFileOverlayStatus(newFilePath, FileOverlayStatus.Modified); |
642 |
|
643 |
|
644 |
var account = action.CloudFile.Account ?? accountInfo.UserName; |
645 |
var container = action.CloudFile.Container; |
646 |
|
647 |
var client = new CloudFilesClient(accountInfo); |
648 |
//TODO: What code is returned when the source file doesn't exist? |
649 |
client.MoveObject(account, container, action.OldCloudFile.Name, container, action.CloudFile.Name); |
650 |
|
651 |
StatusKeeper.SetFileStatus(newFilePath, FileStatus.Unchanged); |
652 |
StatusKeeper.SetFileOverlayStatus(newFilePath, FileOverlayStatus.Normal); |
653 |
NativeMethods.RaiseChangeNotification(newFilePath); |
654 |
} |
655 |
|
656 |
private void DeleteCloudFile(AccountInfo accountInfo, ObjectInfo cloudFile) |
657 |
{ |
658 |
if (accountInfo == null) |
659 |
throw new ArgumentNullException("accountInfo"); |
660 |
if (cloudFile==null) |
661 |
throw new ArgumentNullException("cloudFile"); |
662 |
|
663 |
if (String.IsNullOrWhiteSpace(cloudFile.Container)) |
664 |
throw new ArgumentException("Invalid container", "cloudFile"); |
665 |
Contract.EndContractBlock(); |
666 |
|
667 |
var fileAgent = GetFileAgent(accountInfo); |
668 |
|
669 |
using ( log4net.ThreadContext.Stacks["DeleteCloudFile"].Push("Delete")) |
670 |
{ |
671 |
var fileName= cloudFile.RelativeUrlToFilePath(accountInfo.UserName); |
672 |
var info = fileAgent.GetFileSystemInfo(fileName); |
673 |
var fullPath = info.FullName.ToLower(); |
674 |
|
675 |
StatusKeeper.SetFileOverlayStatus(fullPath, FileOverlayStatus.Modified); |
676 |
|
677 |
var account = cloudFile.Account ?? accountInfo.UserName; |
678 |
var container = cloudFile.Container ;//?? FolderConstants.PithosContainer; |
679 |
|
680 |
var client = new CloudFilesClient(accountInfo); |
681 |
client.DeleteObject(account, container, cloudFile.Name); |
682 |
|
683 |
StatusKeeper.ClearFileStatus(fullPath); |
684 |
} |
685 |
} |
686 |
|
687 |
//Download a file. |
688 |
private async Task DownloadCloudFile(AccountInfo accountInfo, ObjectInfo cloudFile , string filePath) |
689 |
{ |
690 |
if (accountInfo == null) |
691 |
throw new ArgumentNullException("accountInfo"); |
692 |
if (cloudFile == null) |
693 |
throw new ArgumentNullException("cloudFile"); |
694 |
if (String.IsNullOrWhiteSpace(cloudFile.Account)) |
695 |
throw new ArgumentNullException("cloudFile"); |
696 |
if (String.IsNullOrWhiteSpace(cloudFile.Container)) |
697 |
throw new ArgumentNullException("cloudFile"); |
698 |
if (String.IsNullOrWhiteSpace(filePath)) |
699 |
throw new ArgumentNullException("filePath"); |
700 |
if (!Path.IsPathRooted(filePath)) |
701 |
throw new ArgumentException("The filePath must be rooted", "filePath"); |
702 |
Contract.EndContractBlock(); |
703 |
|
704 |
var localPath = Interfaces.FileInfoExtensions.GetProperFilePathCapitalization(filePath); |
705 |
var relativeUrl = new Uri(cloudFile.Name, UriKind.Relative); |
706 |
|
707 |
var url = relativeUrl.ToString(); |
708 |
if (cloudFile.Name.EndsWith(".ignore", StringComparison.InvariantCultureIgnoreCase)) |
709 |
return; |
710 |
|
711 |
|
712 |
//Are we already downloading or uploading the file? |
713 |
using (var gate=NetworkGate.Acquire(localPath, NetworkOperation.Downloading)) |
714 |
{ |
715 |
if (gate.Failed) |
716 |
return; |
717 |
//The file's hashmap will be stored in the same location with the extension .hashmap |
718 |
//var hashPath = Path.Combine(FileAgent.CachePath, relativePath + ".hashmap"); |
719 |
|
720 |
var client = new CloudFilesClient(accountInfo); |
721 |
var account = cloudFile.Account; |
722 |
var container = cloudFile.Container; |
723 |
|
724 |
if (cloudFile.Content_Type == @"application/directory") |
725 |
{ |
726 |
if (!Directory.Exists(localPath)) |
727 |
Directory.CreateDirectory(localPath); |
728 |
} |
729 |
else |
730 |
{ |
731 |
//Retrieve the hashmap from the server |
732 |
var serverHash = await client.GetHashMap(account, container, url); |
733 |
//If it's a small file |
734 |
if (serverHash.Hashes.Count == 1) |
735 |
//Download it in one go |
736 |
await |
737 |
DownloadEntireFileAsync(accountInfo, client, cloudFile, relativeUrl, localPath, serverHash); |
738 |
//Otherwise download it block by block |
739 |
else |
740 |
await DownloadWithBlocks(accountInfo, client, cloudFile, relativeUrl, localPath, serverHash); |
741 |
|
742 |
if (cloudFile.AllowedTo == "read") |
743 |
{ |
744 |
var attributes = File.GetAttributes(localPath); |
745 |
File.SetAttributes(localPath, attributes | FileAttributes.ReadOnly); |
746 |
} |
747 |
} |
748 |
|
749 |
//Now we can store the object's metadata without worrying about ghost status entries |
750 |
StatusKeeper.StoreInfo(localPath, cloudFile); |
751 |
|
752 |
} |
753 |
} |
754 |
|
755 |
//Download a small file with a single GET operation |
756 |
private async Task DownloadEntireFileAsync(AccountInfo accountInfo, CloudFilesClient client, ObjectInfo cloudFile, Uri relativeUrl, string filePath,TreeHash serverHash) |
757 |
{ |
758 |
if (client == null) |
759 |
throw new ArgumentNullException("client"); |
760 |
if (cloudFile==null) |
761 |
throw new ArgumentNullException("cloudFile"); |
762 |
if (relativeUrl == null) |
763 |
throw new ArgumentNullException("relativeUrl"); |
764 |
if (String.IsNullOrWhiteSpace(filePath)) |
765 |
throw new ArgumentNullException("filePath"); |
766 |
if (!Path.IsPathRooted(filePath)) |
767 |
throw new ArgumentException("The localPath must be rooted", "filePath"); |
768 |
Contract.EndContractBlock(); |
769 |
|
770 |
var localPath = Pithos.Interfaces.FileInfoExtensions.GetProperFilePathCapitalization(filePath); |
771 |
//If the file already exists |
772 |
if (File.Exists(localPath)) |
773 |
{ |
774 |
//First check with MD5 as this is a small file |
775 |
var localMD5 = Signature.CalculateMD5(localPath); |
776 |
var cloudHash=serverHash.TopHash.ToHashString(); |
777 |
if (localMD5==cloudHash) |
778 |
return; |
779 |
//Then check with a treehash |
780 |
var localTreeHash = Signature.CalculateTreeHash(localPath, serverHash.BlockSize, serverHash.BlockHash); |
781 |
var localHash = localTreeHash.TopHash.ToHashString(); |
782 |
if (localHash==cloudHash) |
783 |
return; |
784 |
} |
785 |
|
786 |
var fileAgent = GetFileAgent(accountInfo); |
787 |
//Calculate the relative file path for the new file |
788 |
var relativePath = relativeUrl.RelativeUriToFilePath(); |
789 |
//The file will be stored in a temporary location while downloading with an extension .download |
790 |
var tempPath = Path.Combine(fileAgent.CachePath, relativePath + ".download"); |
791 |
//Make sure the target folder exists. DownloadFileTask will not create the folder |
792 |
var tempFolder = Path.GetDirectoryName(tempPath); |
793 |
if (!Directory.Exists(tempFolder)) |
794 |
Directory.CreateDirectory(tempFolder); |
795 |
|
796 |
//Download the object to the temporary location |
797 |
await client.GetObject(cloudFile.Account, cloudFile.Container, relativeUrl.ToString(), tempPath); |
798 |
|
799 |
//Create the local folder if it doesn't exist (necessary for shared objects) |
800 |
var localFolder = Path.GetDirectoryName(localPath); |
801 |
if (!Directory.Exists(localFolder)) |
802 |
Directory.CreateDirectory(localFolder); |
803 |
//And move it to its actual location once downloading is finished |
804 |
if (File.Exists(localPath)) |
805 |
File.Replace(tempPath,localPath,null,true); |
806 |
else |
807 |
File.Move(tempPath,localPath); |
808 |
//Notify listeners that a local file has changed |
809 |
StatusNotification.NotifyChangedFile(localPath); |
810 |
|
811 |
|
812 |
} |
813 |
|
814 |
//Download a file asynchronously using blocks |
815 |
public async Task DownloadWithBlocks(AccountInfo accountInfo, CloudFilesClient client, ObjectInfo cloudFile, Uri relativeUrl, string filePath, TreeHash serverHash) |
816 |
{ |
817 |
if (client == null) |
818 |
throw new ArgumentNullException("client"); |
819 |
if (cloudFile == null) |
820 |
throw new ArgumentNullException("cloudFile"); |
821 |
if (relativeUrl == null) |
822 |
throw new ArgumentNullException("relativeUrl"); |
823 |
if (String.IsNullOrWhiteSpace(filePath)) |
824 |
throw new ArgumentNullException("filePath"); |
825 |
if (!Path.IsPathRooted(filePath)) |
826 |
throw new ArgumentException("The filePath must be rooted", "filePath"); |
827 |
if (serverHash == null) |
828 |
throw new ArgumentNullException("serverHash"); |
829 |
Contract.EndContractBlock(); |
830 |
|
831 |
var fileAgent = GetFileAgent(accountInfo); |
832 |
var localPath = Interfaces.FileInfoExtensions.GetProperFilePathCapitalization(filePath); |
833 |
|
834 |
//Calculate the relative file path for the new file |
835 |
var relativePath = relativeUrl.RelativeUriToFilePath(); |
836 |
var blockUpdater = new BlockUpdater(fileAgent.CachePath, localPath, relativePath, serverHash); |
837 |
|
838 |
|
839 |
|
840 |
//Calculate the file's treehash |
841 |
var treeHash = await Signature.CalculateTreeHashAsync(localPath, serverHash.BlockSize, serverHash.BlockHash); |
842 |
|
843 |
//And compare it with the server's hash |
844 |
var upHashes = serverHash.GetHashesAsStrings(); |
845 |
var localHashes = treeHash.HashDictionary; |
846 |
for (int i = 0; i < upHashes.Length; i++) |
847 |
{ |
848 |
//For every non-matching hash |
849 |
var upHash = upHashes[i]; |
850 |
if (!localHashes.ContainsKey(upHash)) |
851 |
{ |
852 |
if (blockUpdater.UseOrphan(i, upHash)) |
853 |
{ |
854 |
Log.InfoFormat("[BLOCK GET] ORPHAN FOUND for {0} of {1} for {2}", i, upHashes.Length, localPath); |
855 |
continue; |
856 |
} |
857 |
Log.InfoFormat("[BLOCK GET] START {0} of {1} for {2}", i, upHashes.Length, localPath); |
858 |
var start = i*serverHash.BlockSize; |
859 |
//To download the last block just pass a null for the end of the range |
860 |
long? end = null; |
861 |
if (i < upHashes.Length - 1 ) |
862 |
end= ((i + 1)*serverHash.BlockSize) ; |
863 |
|
864 |
//Download the missing block |
865 |
var block = await client.GetBlock(cloudFile.Account, cloudFile.Container, relativeUrl, start, end); |
866 |
|
867 |
//and store it |
868 |
blockUpdater.StoreBlock(i, block); |
869 |
|
870 |
|
871 |
Log.InfoFormat("[BLOCK GET] FINISH {0} of {1} for {2}", i, upHashes.Length, localPath); |
872 |
} |
873 |
} |
874 |
|
875 |
//Want to avoid notifications if no changes were made |
876 |
var hasChanges = blockUpdater.HasBlocks; |
877 |
blockUpdater.Commit(); |
878 |
|
879 |
if (hasChanges) |
880 |
//Notify listeners that a local file has changed |
881 |
StatusNotification.NotifyChangedFile(localPath); |
882 |
|
883 |
Log.InfoFormat("[BLOCK GET] COMPLETE {0}", localPath); |
884 |
} |
885 |
|
886 |
|
887 |
private async Task UploadCloudFile(CloudAction action) |
888 |
{ |
889 |
if (action == null) |
890 |
throw new ArgumentNullException("action"); |
891 |
Contract.EndContractBlock(); |
892 |
|
893 |
try |
894 |
{ |
895 |
var accountInfo = action.AccountInfo; |
896 |
|
897 |
var fileInfo = action.LocalFile; |
898 |
|
899 |
if (fileInfo.Extension.Equals("ignore", StringComparison.InvariantCultureIgnoreCase)) |
900 |
return; |
901 |
|
902 |
var relativePath = fileInfo.AsRelativeTo(accountInfo.AccountPath); |
903 |
if (relativePath.StartsWith(FolderConstants.OthersFolder)) |
904 |
{ |
905 |
var parts = relativePath.Split('\\'); |
906 |
var accountName = parts[1]; |
907 |
var oldName = accountInfo.UserName; |
908 |
var absoluteUri = accountInfo.StorageUri.AbsoluteUri; |
909 |
var nameIndex = absoluteUri.IndexOf(oldName); |
910 |
var root = absoluteUri.Substring(0, nameIndex); |
911 |
|
912 |
accountInfo = new AccountInfo |
913 |
{ |
914 |
UserName = accountName, |
915 |
AccountPath = Path.Combine(accountInfo.AccountPath, parts[0], parts[1]), |
916 |
StorageUri = new Uri(root + accountName), |
917 |
BlockHash = accountInfo.BlockHash, |
918 |
BlockSize = accountInfo.BlockSize, |
919 |
Token = accountInfo.Token |
920 |
}; |
921 |
} |
922 |
|
923 |
|
924 |
var fullFileName = fileInfo.GetProperCapitalization(); |
925 |
using (var gate = NetworkGate.Acquire(fullFileName, NetworkOperation.Uploading)) |
926 |
{ |
927 |
//Abort if the file is already being uploaded or downloaded |
928 |
if (gate.Failed) |
929 |
return; |
930 |
|
931 |
var cloudFile = action.CloudFile; |
932 |
var account = cloudFile.Account ?? accountInfo.UserName; |
933 |
|
934 |
var client = new CloudFilesClient(accountInfo); |
935 |
//Even if GetObjectInfo times out, we can proceed with the upload |
936 |
var info = client.GetObjectInfo(account, cloudFile.Container, cloudFile.Name); |
937 |
|
938 |
//If this is a read-only file, do not upload changes |
939 |
if (info.AllowedTo == "read") |
940 |
return; |
941 |
|
942 |
//TODO: Check how a directory hash is calculated -> All dirs seem to have the same hash |
943 |
if (fileInfo is DirectoryInfo) |
944 |
{ |
945 |
//If the directory doesn't exist the Hash property will be empty |
946 |
if (String.IsNullOrWhiteSpace(info.Hash)) |
947 |
//Go on and create the directory |
948 |
client.PutObject(account, cloudFile.Container, cloudFile.Name, fullFileName, String.Empty, "application/directory"); |
949 |
} |
950 |
else |
951 |
{ |
952 |
|
953 |
var cloudHash = info.Hash.ToLower(); |
954 |
|
955 |
var hash = action.LocalHash.Value; |
956 |
var topHash = action.TopHash.Value; |
957 |
|
958 |
//If the file hashes match, abort the upload |
959 |
if (hash == cloudHash || topHash == cloudHash) |
960 |
{ |
961 |
//but store any metadata changes |
962 |
StatusKeeper.StoreInfo(fullFileName, info); |
963 |
Log.InfoFormat("Skip upload of {0}, hashes match", fullFileName); |
964 |
return; |
965 |
} |
966 |
|
967 |
|
968 |
//Mark the file as modified while we upload it |
969 |
StatusKeeper.SetFileOverlayStatus(fullFileName, FileOverlayStatus.Modified); |
970 |
//And then upload it |
971 |
|
972 |
//Upload even small files using the Hashmap. The server may already contain |
973 |
//the relevant block |
974 |
|
975 |
//First, calculate the tree hash |
976 |
var treeHash = await Signature.CalculateTreeHashAsync(fullFileName, accountInfo.BlockSize, |
977 |
accountInfo.BlockHash); |
978 |
|
979 |
await UploadWithHashMap(accountInfo, cloudFile, fileInfo as FileInfo, cloudFile.Name, treeHash); |
980 |
} |
981 |
//If everything succeeds, change the file and overlay status to normal |
982 |
StatusKeeper.SetFileState(fullFileName, FileStatus.Unchanged, FileOverlayStatus.Normal); |
983 |
} |
984 |
//Notify the Shell to update the overlays |
985 |
NativeMethods.RaiseChangeNotification(fullFileName); |
986 |
StatusNotification.NotifyChangedFile(fullFileName); |
987 |
} |
988 |
catch (AggregateException ex) |
989 |
{ |
990 |
var exc = ex.InnerException as WebException; |
991 |
if (exc == null) |
992 |
throw ex.InnerException; |
993 |
if (HandleUploadWebException(action, exc)) |
994 |
return; |
995 |
throw; |
996 |
} |
997 |
catch (WebException ex) |
998 |
{ |
999 |
if (HandleUploadWebException(action, ex)) |
1000 |
return; |
1001 |
throw; |
1002 |
} |
1003 |
catch (Exception ex) |
1004 |
{ |
1005 |
Log.Error("Unexpected error while uploading file", ex); |
1006 |
throw; |
1007 |
} |
1008 |
|
1009 |
} |
1010 |
|
1011 |
private bool IsDeletedFile(CloudAction action) |
1012 |
{ |
1013 |
var key = GetFileKey(action.CloudFile); |
1014 |
DateTime entryDate; |
1015 |
if (_deletedFiles.TryGetValue(key, out entryDate)) |
1016 |
{ |
1017 |
//If the delete entry was created after this action, abort the action |
1018 |
if (entryDate > action.Created) |
1019 |
return true; |
1020 |
//Otherwise, remove the stale entry |
1021 |
_deletedFiles.TryRemove(key, out entryDate); |
1022 |
} |
1023 |
return false; |
1024 |
} |
1025 |
|
1026 |
private bool HandleUploadWebException(CloudAction action, WebException exc) |
1027 |
{ |
1028 |
var response = exc.Response as HttpWebResponse; |
1029 |
if (response == null) |
1030 |
throw exc; |
1031 |
if (response.StatusCode == HttpStatusCode.Unauthorized) |
1032 |
{ |
1033 |
Log.Error("Not allowed to upload file", exc); |
1034 |
var message = String.Format("Not allowed to uplad file {0}", action.LocalFile.FullName); |
1035 |
StatusKeeper.SetFileState(action.LocalFile.FullName, FileStatus.Unchanged, FileOverlayStatus.Normal); |
1036 |
StatusNotification.NotifyChange(message, TraceLevel.Warning); |
1037 |
return true; |
1038 |
} |
1039 |
return false; |
1040 |
} |
1041 |
|
1042 |
public async Task UploadWithHashMap(AccountInfo accountInfo,ObjectInfo cloudFile,FileInfo fileInfo,string url,TreeHash treeHash) |
1043 |
{ |
1044 |
if (accountInfo == null) |
1045 |
throw new ArgumentNullException("accountInfo"); |
1046 |
if (cloudFile==null) |
1047 |
throw new ArgumentNullException("cloudFile"); |
1048 |
if (fileInfo == null) |
1049 |
throw new ArgumentNullException("fileInfo"); |
1050 |
if (String.IsNullOrWhiteSpace(url)) |
1051 |
throw new ArgumentNullException(url); |
1052 |
if (treeHash==null) |
1053 |
throw new ArgumentNullException("treeHash"); |
1054 |
if (String.IsNullOrWhiteSpace(cloudFile.Container) ) |
1055 |
throw new ArgumentException("Invalid container","cloudFile"); |
1056 |
Contract.EndContractBlock(); |
1057 |
|
1058 |
var fullFileName = fileInfo.GetProperCapitalization(); |
1059 |
|
1060 |
var account = cloudFile.Account ?? accountInfo.UserName; |
1061 |
var container = cloudFile.Container ; |
1062 |
|
1063 |
var client = new CloudFilesClient(accountInfo); |
1064 |
//Send the hashmap to the server |
1065 |
var missingHashes = await client.PutHashMap(account, container, url, treeHash); |
1066 |
//If the server returns no missing hashes, we are done |
1067 |
while (missingHashes.Count > 0) |
1068 |
{ |
1069 |
|
1070 |
var buffer = new byte[accountInfo.BlockSize]; |
1071 |
foreach (var missingHash in missingHashes) |
1072 |
{ |
1073 |
//Find the proper block |
1074 |
var blockIndex = treeHash.HashDictionary[missingHash]; |
1075 |
var offset = blockIndex*accountInfo.BlockSize; |
1076 |
|
1077 |
var read = fileInfo.Read(buffer, offset, accountInfo.BlockSize); |
1078 |
|
1079 |
try |
1080 |
{ |
1081 |
//And upload the block |
1082 |
await client.PostBlock(account, container, buffer, 0, read); |
1083 |
Log.InfoFormat("[BLOCK] Block {0} of {1} uploaded", blockIndex, fullFileName); |
1084 |
} |
1085 |
catch (Exception exc) |
1086 |
{ |
1087 |
Log.ErrorFormat("[ERROR] uploading block {0} of {1}\n{2}", blockIndex, fullFileName, exc); |
1088 |
} |
1089 |
|
1090 |
} |
1091 |
|
1092 |
//Repeat until there are no more missing hashes |
1093 |
missingHashes = await client.PutHashMap(account, container, url, treeHash); |
1094 |
} |
1095 |
} |
1096 |
|
1097 |
|
1098 |
public void AddAccount(AccountInfo accountInfo) |
1099 |
{ |
1100 |
if (!_accounts.Contains(accountInfo)) |
1101 |
_accounts.Add(accountInfo); |
1102 |
} |
1103 |
} |
1104 |
|
1105 |
|
1106 |
|
1107 |
|
1108 |
} |