root / trunk / Pithos.Core / Agents / Uploader.cs @ e4067290
History | View | Annotate | Download (18 kB)
1 |
using System; |
---|---|
2 |
using System.Collections.Generic; |
3 |
using System.ComponentModel.Composition; |
4 |
using System.Diagnostics; |
5 |
using System.Diagnostics.Contracts; |
6 |
using System.IO; |
7 |
using System.Linq; |
8 |
using System.Net; |
9 |
using System.Reflection; |
10 |
using System.Security.Cryptography; |
11 |
using System.Threading; |
12 |
using System.Threading.Tasks; |
13 |
using Pithos.Interfaces; |
14 |
using Pithos.Network; |
15 |
using log4net; |
16 |
|
17 |
namespace Pithos.Core.Agents |
18 |
{ |
19 |
[Export(typeof(Uploader))] |
20 |
public class Uploader |
21 |
{ |
22 |
private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
23 |
|
24 |
[Import] |
25 |
private IStatusKeeper StatusKeeper { get; set; } |
26 |
|
27 |
public IStatusNotification StatusNotification { get; set; } |
28 |
|
29 |
|
30 |
//CancellationTokenSource _cts = new CancellationTokenSource(); |
31 |
/*public void SignalStop() |
32 |
{ |
33 |
_cts.Cancel(); |
34 |
}*/ |
35 |
|
36 |
public async Task UploadCloudFile(CloudUploadAction action,CancellationToken cancellationToken) |
37 |
{ |
38 |
if (action == null) |
39 |
throw new ArgumentNullException("action"); |
40 |
Contract.EndContractBlock(); |
41 |
|
42 |
using (ThreadContext.Stacks["Operation"].Push("UploadCloudFile")) |
43 |
{ |
44 |
try |
45 |
{ |
46 |
await UnpauseEvent.WaitAsync(); |
47 |
|
48 |
var fileInfo = action.LocalFile; |
49 |
|
50 |
if (fileInfo.Extension.Equals("ignore", StringComparison.InvariantCultureIgnoreCase)) |
51 |
return; |
52 |
|
53 |
if (!Selectives.IsSelected(action.AccountInfo, fileInfo) && !action.IsCreation) |
54 |
return; |
55 |
|
56 |
//Try to load the action's local state, if it is empty |
57 |
if (action.FileState == null) |
58 |
action.FileState = StatusKeeper.GetStateByFilePath(fileInfo.FullName); |
59 |
if (action.FileState != null) |
60 |
{ |
61 |
/* |
62 |
Log.WarnFormat("File [{0}] has no local state. It was probably created by a download action", fileInfo.FullName); |
63 |
return; |
64 |
*/ |
65 |
|
66 |
|
67 |
var latestState = action.FileState; |
68 |
|
69 |
//Do not upload files in conflict |
70 |
if (latestState.FileStatus == FileStatus.Conflict) |
71 |
{ |
72 |
Log.InfoFormat("Skipping file in conflict [{0}]", fileInfo.FullName); |
73 |
return; |
74 |
} |
75 |
//Do not upload files when we have no permission |
76 |
if (latestState.FileStatus == FileStatus.Forbidden) |
77 |
{ |
78 |
Log.InfoFormat("Skipping forbidden file [{0}]", fileInfo.FullName); |
79 |
return; |
80 |
} |
81 |
} |
82 |
//Are we targeting our own account or a sharer account? |
83 |
var relativePath = fileInfo.AsRelativeTo(action.AccountInfo.AccountPath); |
84 |
var accountInfo = relativePath.StartsWith(FolderConstants.OthersFolder) |
85 |
? GetSharerAccount(relativePath, action.AccountInfo) |
86 |
: action.AccountInfo; |
87 |
|
88 |
|
89 |
|
90 |
var fullFileName = fileInfo.GetProperCapitalization(); |
91 |
using (var gate = NetworkGate.Acquire(fullFileName, NetworkOperation.Uploading)) |
92 |
{ |
93 |
//Abort if the file is already being uploaded or downloaded |
94 |
if (gate.Failed) |
95 |
return; |
96 |
|
97 |
var cloudFile = action.CloudFile; |
98 |
var account = cloudFile.Account ?? accountInfo.UserName; |
99 |
try |
100 |
{ |
101 |
|
102 |
var client = new CloudFilesClient(accountInfo); |
103 |
|
104 |
//Even if GetObjectInfo times out, we can proceed with the upload |
105 |
var cloudInfo = client.GetObjectInfo(account, cloudFile.Container, cloudFile.Name); |
106 |
|
107 |
//If this a shared file |
108 |
if (!cloudFile.Account.Equals(action.AccountInfo.UserName,StringComparison.InvariantCultureIgnoreCase)) |
109 |
{ |
110 |
|
111 |
/* |
112 |
if (!cloudInfo.IsWritable(action.AccountInfo.UserName)) |
113 |
{ |
114 |
MakeFileReadOnly(fullFileName); |
115 |
StatusKeeper.SetFileState(fullFileName, FileStatus.Unchanged, FileOverlayStatus.Normal, ""); |
116 |
return; |
117 |
} |
118 |
*/ |
119 |
|
120 |
//If this is a read-only file, do not upload changes |
121 |
if ( !cloudInfo.IsWritable(action.AccountInfo.UserName) || |
122 |
//If the file is new, but we can't upload it |
123 |
(!cloudInfo.Exists && !client.CanUpload(account, cloudFile)) ) |
124 |
{ |
125 |
MakeFileReadOnly(fullFileName); |
126 |
StatusKeeper.SetFileState(fullFileName, FileStatus.Unchanged, FileOverlayStatus.Normal, ""); |
127 |
return; |
128 |
} |
129 |
|
130 |
} |
131 |
|
132 |
await UnpauseEvent.WaitAsync(); |
133 |
|
134 |
if (fileInfo is DirectoryInfo) |
135 |
{ |
136 |
//If the directory doesn't exist the Hash property will be empty |
137 |
if (String.IsNullOrWhiteSpace(cloudInfo.X_Object_Hash)) |
138 |
//Go on and create the directory |
139 |
await client.PutObject(account, cloudFile.Container, cloudFile.Name, fullFileName, |
140 |
String.Empty, "application/directory"); |
141 |
//If the upload is in response to a Folder create with Selective Sync enabled |
142 |
if (action.IsCreation) |
143 |
{ |
144 |
//Add the folder to the Selected URls |
145 |
var selectiveUri = new Uri(client.RootAddressUri, cloudFile.Uri); |
146 |
Selectives.AddUri(accountInfo, selectiveUri); |
147 |
Selectives.Save(accountInfo); |
148 |
} |
149 |
} |
150 |
else |
151 |
{ |
152 |
|
153 |
var cloudHash = cloudInfo.X_Object_Hash.ToLower(); |
154 |
|
155 |
string topHash; |
156 |
TreeHash treeHash; |
157 |
using(StatusNotification.GetNotifier("Hashing {0} for Upload", "Finished hashing {0}",fileInfo.Name)) |
158 |
{ |
159 |
treeHash = action.TreeHash.Value; |
160 |
topHash = treeHash.TopHash.ToHashString(); |
161 |
} |
162 |
|
163 |
|
164 |
|
165 |
//If the file hashes match, abort the upload |
166 |
if (cloudInfo != ObjectInfo.Empty && (topHash == cloudHash )) |
167 |
{ |
168 |
//but store any metadata changes |
169 |
StatusKeeper.StoreInfo(fullFileName, cloudInfo); |
170 |
Log.InfoFormat("Skip upload of {0}, hashes match", fullFileName); |
171 |
return; |
172 |
} |
173 |
|
174 |
|
175 |
//Mark the file as modified while we upload it |
176 |
await StatusKeeper.SetFileOverlayStatus(fullFileName, FileOverlayStatus.Modified); |
177 |
//And then upload it |
178 |
|
179 |
//Upload even small files using the Hashmap. The server may already contain |
180 |
//the relevant block |
181 |
|
182 |
|
183 |
|
184 |
await UploadWithHashMap(accountInfo, cloudFile, fileInfo as FileInfo, cloudFile.Name, treeHash,cancellationToken); |
185 |
} |
186 |
var currentInfo=client.GetObjectInfo(cloudFile.Account, cloudFile.Container, cloudFile.Name); |
187 |
//If there is no stored ObjectID in the file state, add it |
188 |
if (action.FileState == null || action.FileState.ObjectID == null) |
189 |
{ |
190 |
StatusKeeper.StoreInfo(fullFileName,currentInfo); |
191 |
} |
192 |
else |
193 |
//If everything succeeds, change the file and overlay status to normal |
194 |
StatusKeeper.SetFileState(fullFileName, FileStatus.Unchanged, FileOverlayStatus.Normal, ""); |
195 |
} |
196 |
catch (WebException exc) |
197 |
{ |
198 |
var response = (exc.Response as HttpWebResponse); |
199 |
if (response == null) |
200 |
throw; |
201 |
if (response.StatusCode == HttpStatusCode.Forbidden) |
202 |
{ |
203 |
StatusKeeper.SetFileState(fileInfo.FullName, FileStatus.Forbidden, FileOverlayStatus.Conflict, "Forbidden"); |
204 |
MakeFileReadOnly(fullFileName); |
205 |
} |
206 |
else |
207 |
//In any other case, propagate the error |
208 |
throw; |
209 |
} |
210 |
} |
211 |
//Notify the Shell to update the overlays |
212 |
NativeMethods.RaiseChangeNotification(fullFileName); |
213 |
StatusNotification.NotifyChangedFile(fullFileName); |
214 |
} |
215 |
catch (AggregateException ex) |
216 |
{ |
217 |
var exc = ex.InnerException as WebException; |
218 |
if (exc == null) |
219 |
throw ex.InnerException; |
220 |
if (HandleUploadWebException(action, exc)) |
221 |
return; |
222 |
throw; |
223 |
} |
224 |
catch (WebException ex) |
225 |
{ |
226 |
if (HandleUploadWebException(action, ex)) |
227 |
return; |
228 |
throw; |
229 |
} |
230 |
catch (Exception ex) |
231 |
{ |
232 |
Log.Error("Unexpected error while uploading file", ex); |
233 |
throw; |
234 |
} |
235 |
} |
236 |
} |
237 |
|
238 |
private static void MakeFileReadOnly(string fullFileName) |
239 |
{ |
240 |
var attributes = File.GetAttributes(fullFileName); |
241 |
//Do not make any modifications if not necessary |
242 |
if (attributes.HasFlag(FileAttributes.ReadOnly)) |
243 |
return; |
244 |
File.SetAttributes(fullFileName, attributes | FileAttributes.ReadOnly); |
245 |
} |
246 |
|
247 |
private static AccountInfo GetSharerAccount(string relativePath, AccountInfo accountInfo) |
248 |
{ |
249 |
var parts = relativePath.Split('\\'); |
250 |
var accountName = parts[1]; |
251 |
var oldName = accountInfo.UserName; |
252 |
var absoluteUri = accountInfo.StorageUri.AbsoluteUri; |
253 |
var nameIndex = absoluteUri.IndexOf(oldName, StringComparison.Ordinal); |
254 |
var root = absoluteUri.Substring(0, nameIndex); |
255 |
|
256 |
accountInfo = new AccountInfo |
257 |
{ |
258 |
UserName = accountName, |
259 |
AccountPath = Path.Combine(accountInfo.AccountPath, parts[0], parts[1]), |
260 |
StorageUri = new Uri(root + accountName), |
261 |
BlockHash = accountInfo.BlockHash, |
262 |
BlockSize = accountInfo.BlockSize, |
263 |
Token = accountInfo.Token |
264 |
}; |
265 |
return accountInfo; |
266 |
} |
267 |
|
268 |
|
269 |
public async Task UploadWithHashMap(AccountInfo accountInfo, ObjectInfo cloudFile, FileInfo fileInfo, string url, TreeHash treeHash, CancellationToken token) |
270 |
{ |
271 |
if (accountInfo == null) |
272 |
throw new ArgumentNullException("accountInfo"); |
273 |
if (cloudFile == null) |
274 |
throw new ArgumentNullException("cloudFile"); |
275 |
if (fileInfo == null) |
276 |
throw new ArgumentNullException("fileInfo"); |
277 |
if (String.IsNullOrWhiteSpace(url)) |
278 |
throw new ArgumentNullException(url); |
279 |
if (treeHash == null) |
280 |
throw new ArgumentNullException("treeHash"); |
281 |
if (String.IsNullOrWhiteSpace(cloudFile.Container)) |
282 |
throw new ArgumentException("Invalid container", "cloudFile"); |
283 |
Contract.EndContractBlock(); |
284 |
|
285 |
|
286 |
using (StatusNotification.GetNotifier("Uploading {0}", "Finished Uploading {0}", fileInfo.Name)) |
287 |
{ |
288 |
if (await WaitOrAbort(accountInfo,cloudFile, token)) |
289 |
return; |
290 |
|
291 |
var fullFileName = fileInfo.GetProperCapitalization(); |
292 |
|
293 |
var account = cloudFile.Account ?? accountInfo.UserName; |
294 |
var container = cloudFile.Container; |
295 |
|
296 |
|
297 |
var client = new CloudFilesClient(accountInfo); |
298 |
//Send the hashmap to the server |
299 |
var missingHashes = await client.PutHashMap(account, container, url, treeHash); |
300 |
int block = 0; |
301 |
ReportUploadProgress(fileInfo.Name, block++, missingHashes.Count, fileInfo.Length); |
302 |
//If the server returns no missing hashes, we are done |
303 |
while (missingHashes.Count > 0) |
304 |
{ |
305 |
|
306 |
if (await WaitOrAbort(accountInfo,cloudFile, token)) |
307 |
return; |
308 |
|
309 |
|
310 |
var buffer = new byte[accountInfo.BlockSize]; |
311 |
foreach (var missingHash in missingHashes) |
312 |
{ |
313 |
if (await WaitOrAbort(accountInfo,cloudFile, token)) |
314 |
return; |
315 |
|
316 |
|
317 |
//Find the proper block |
318 |
var blockIndex = treeHash.HashDictionary[missingHash]; |
319 |
long offset = blockIndex*accountInfo.BlockSize; |
320 |
|
321 |
var read = fileInfo.Read(buffer, offset, accountInfo.BlockSize); |
322 |
|
323 |
try |
324 |
{ |
325 |
//And upload the block |
326 |
await client.PostBlock(account, container, buffer, 0, read, token); |
327 |
Log.InfoFormat("[BLOCK] Block {0} of {1} uploaded", blockIndex, fullFileName); |
328 |
} |
329 |
catch (TaskCanceledException exc) |
330 |
{ |
331 |
throw new OperationCanceledException(token); |
332 |
} |
333 |
catch (Exception exc) |
334 |
{ |
335 |
Log.Error(String.Format("Uploading block {0} of {1}", blockIndex, fullFileName), exc); |
336 |
} |
337 |
ReportUploadProgress(fileInfo.Name, block++, missingHashes.Count, fileInfo.Length); |
338 |
} |
339 |
|
340 |
token.ThrowIfCancellationRequested(); |
341 |
//Repeat until there are no more missing hashes |
342 |
missingHashes = await client.PutHashMap(account, container, url, treeHash); |
343 |
} |
344 |
|
345 |
ReportUploadProgress(fileInfo.Name, missingHashes.Count, missingHashes.Count, fileInfo.Length); |
346 |
} |
347 |
} |
348 |
|
349 |
private async Task<bool> WaitOrAbort(AccountInfo account,ObjectInfo cloudFile, CancellationToken token) |
350 |
{ |
351 |
token.ThrowIfCancellationRequested(); |
352 |
await UnpauseEvent.WaitAsync(); |
353 |
var shouldAbort = !Selectives.IsSelected(account,cloudFile); |
354 |
if (shouldAbort) |
355 |
Log.InfoFormat("Aborting [{0}]",cloudFile.Uri); |
356 |
return shouldAbort; |
357 |
} |
358 |
|
359 |
private void ReportUploadProgress(string fileName, int block, int totalBlocks, long fileSize) |
360 |
{ |
361 |
StatusNotification.Notify(totalBlocks == 0 |
362 |
? new ProgressNotification(fileName, "Uploading", 1, 1, fileSize) |
363 |
: new ProgressNotification(fileName, "Uploading", block, totalBlocks, fileSize)); |
364 |
} |
365 |
|
366 |
|
367 |
private bool HandleUploadWebException(CloudAction action, WebException exc) |
368 |
{ |
369 |
var response = exc.Response as HttpWebResponse; |
370 |
if (response == null) |
371 |
throw exc; |
372 |
if (response.StatusCode == HttpStatusCode.Unauthorized) |
373 |
{ |
374 |
Log.Error("Not allowed to upload file", exc); |
375 |
var message = String.Format("Not allowed to uplad file {0}", action.LocalFile.FullName); |
376 |
StatusKeeper.SetFileState(action.LocalFile.FullName, FileStatus.Unchanged, FileOverlayStatus.Normal, ""); |
377 |
StatusNotification.NotifyChange(message, TraceLevel.Warning); |
378 |
return true; |
379 |
} |
380 |
return false; |
381 |
} |
382 |
|
383 |
[Import] |
384 |
public Selectives Selectives { get; set; } |
385 |
|
386 |
public AsyncManualResetEvent UnpauseEvent { get; set; } |
387 |
} |
388 |
} |