code.grnet.gr Git - pithos-ms-client/blob - trunk/Pithos.Network/CloudFilesClient.cs

   1 #region
   2 /* -----------------------------------------------------------------------
   3  * <copyright file="CloudFilesClient.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
  43 // **CloudFilesClient** provides a simple client interface to CloudFiles and Pithos
  44 //
  45 // The class provides methods to upload/download files, delete files, manage containers
  46
  47
  48 using System;
  49 using System.Collections;
  50 using System.Collections.Generic;
  51 using System.Collections.Specialized;
  52 using System.ComponentModel.Composition;
  53 using System.Diagnostics;
  54 using System.Diagnostics.Contracts;
  55 using System.IO;
  56 using System.Linq;
  57 using System.Net;
  58 using System.Reflection;
  59 using System.Security.Cryptography;
  60 using System.Text;
  61 using System.Threading.Tasks;
  62 using Newtonsoft.Json;
  63 using Pithos.Interfaces;
  64 using log4net;
  65
  66 namespace Pithos.Network
  67 {
  68     [Export(typeof(ICloudClient))]
  69     public class CloudFilesClient:ICloudClient
  70     {
  71         private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
  72
  73         //CloudFilesClient uses *_baseClient* internally to communicate with the server
  74         //RestClient provides a REST-friendly interface over the standard WebClient.
  75         private RestClient _baseClient;
  76
  77
  78         //During authentication the client provides a UserName
  79         public string UserName { get; set; }
  80
  81         //and and ApiKey to the server
  82         public string ApiKey { get; set; }
  83
  84         //And receives an authentication Token. This token must be provided in ALL other operations,
  85         //in the X-Auth-Token header
  86         private string _token;
  87         public string Token
  88         {
  89             get { return _token; }
  90             set
  91             {
  92                 _token = value;
  93                 _baseClient.Headers["X-Auth-Token"] = value;
  94             }
  95         }
  96
  97         //The client also receives a StorageUrl after authentication. All subsequent operations must
  98         //use this url
  99         public Uri StorageUrl { get; set; }
 100
 101
 102         protected Uri RootAddressUri { get; set; }
 103
 104        /* private WebProxy _proxy;
 105         public WebProxy Proxy
 106         {
 107             get { return _proxy; }
 108             set
 109             {
 110                 _proxy = value;
 111                 if (_baseClient != null)
 112                     _baseClient.Proxy = value;
 113             }
 114         }
 115 */
 116
 117         /* private Uri _proxy;
 118         public Uri Proxy
 119         {
 120             get { return _proxy; }
 121             set
 122             {
 123                 _proxy = value;
 124                 if (_baseClient != null)
 125                     _baseClient.Proxy = new WebProxy(value);
 126             }
 127         }*/
 128
 129         public double DownloadPercentLimit { get; set; }
 130         public double UploadPercentLimit { get; set; }
 131
 132         public string AuthenticationUrl { get; set; }
 133
 134
 135         public string VersionPath
 136         {
 137             get { return UsePithos ? "v1" : "v1.0"; }
 138         }
 139
 140         public bool UsePithos { get; set; }
 141
 142
 143
 144         public CloudFilesClient(string userName, string apiKey)
 145         {
 146             UserName = userName;
 147             ApiKey = apiKey;
 148         }
 149
 150         public CloudFilesClient(AccountInfo accountInfo)
 151         {
 152             if (accountInfo==null)
 153                 throw new ArgumentNullException("accountInfo");
 154             Contract.Ensures(!String.IsNullOrWhiteSpace(Token));
 155             Contract.Ensures(StorageUrl != null);
 156             Contract.Ensures(_baseClient != null);
 157             Contract.Ensures(RootAddressUri != null);
 158             Contract.EndContractBlock();
 159
 160             _baseClient = new RestClient
 161             {
 162                 BaseAddress = accountInfo.StorageUri.ToString(),
 163                 Timeout = 10000,
 164                 Retries = 3,
 165             };
 166             StorageUrl = accountInfo.StorageUri;
 167             Token = accountInfo.Token;
 168             UserName = accountInfo.UserName;
 169
 170             //Get the root address (StorageUrl without the account)
 171             var storageUrl = StorageUrl.AbsoluteUri;
 172             var usernameIndex = storageUrl.LastIndexOf(UserName);
 173             var rootUrl = storageUrl.Substring(0, usernameIndex);
 174             RootAddressUri = new Uri(rootUrl);
 175         }
 176
 177
 178         public AccountInfo Authenticate()
 179         {
 180             if (String.IsNullOrWhiteSpace(UserName))
 181                 throw new InvalidOperationException("UserName is empty");
 182             if (String.IsNullOrWhiteSpace(ApiKey))
 183                 throw new InvalidOperationException("ApiKey is empty");
 184             if (String.IsNullOrWhiteSpace(AuthenticationUrl))
 185                 throw new InvalidOperationException("AuthenticationUrl is empty");
 186             Contract.Ensures(!String.IsNullOrWhiteSpace(Token));
 187             Contract.Ensures(StorageUrl != null);
 188             Contract.Ensures(_baseClient != null);
 189             Contract.Ensures(RootAddressUri != null);
 190             Contract.EndContractBlock();
 191
 192
 193             Log.InfoFormat("[AUTHENTICATE] Start for {0}", UserName);
 194
 195             var groups = new List<Group>();
 196
 197             using (var authClient = new RestClient{BaseAddress=AuthenticationUrl})
 198             {
 199                /* if (Proxy != null)
 200                     authClient.Proxy = Proxy;*/
 201
 202                 Contract.Assume(authClient.Headers!=null);
 203
 204                 authClient.Headers.Add("X-Auth-User", UserName);
 205                 authClient.Headers.Add("X-Auth-Key", ApiKey);
 206
 207                 authClient.DownloadStringWithRetry(VersionPath, 3);
 208
 209                 authClient.AssertStatusOK("Authentication failed");
 210
 211                 var storageUrl = authClient.GetHeaderValue("X-Storage-Url");
 212                 if (String.IsNullOrWhiteSpace(storageUrl))
 213                     throw new InvalidOperationException("Failed to obtain storage url");
 214
 215                 _baseClient = new RestClient
 216                 {
 217                     BaseAddress = storageUrl,
 218                     Timeout = 10000,
 219                     Retries = 3,
 220                     //Proxy=Proxy
 221                 };
 222
 223                 StorageUrl = new Uri(storageUrl);
 224
 225                 //Get the root address (StorageUrl without the account)
 226                 var usernameIndex=storageUrl.LastIndexOf(UserName);
 227                 var rootUrl = storageUrl.Substring(0, usernameIndex);
 228                 RootAddressUri = new Uri(rootUrl);
 229
 230                 var token = authClient.GetHeaderValue("X-Auth-Token");
 231                 if (String.IsNullOrWhiteSpace(token))
 232                     throw new InvalidOperationException("Failed to obtain token url");
 233                 Token = token;
 234
 235                /* var keys = authClient.ResponseHeaders.AllKeys.AsQueryable();
 236                 groups = (from key in keys
 237                             where key.StartsWith("X-Account-Group-")
 238                             let name = key.Substring(16)
 239                             select new Group(name, authClient.ResponseHeaders[key]))
 240                         .ToList();
 241
 242 */
 243             }
 244
 245             Log.InfoFormat("[AUTHENTICATE] End for {0}", UserName);
 246
 247
 248             return new AccountInfo {StorageUri = StorageUrl, Token = Token, UserName = UserName,Groups=groups};
 249
 250         }
 251
 252
 253
 254         public IList<ContainerInfo> ListContainers(string account)
 255         {
 256             using (var client = new RestClient(_baseClient))
 257             {
 258                 if (!String.IsNullOrWhiteSpace(account))
 259                     client.BaseAddress = GetAccountUrl(account);
 260
 261                 client.Parameters.Clear();
 262                 client.Parameters.Add("format", "json");
 263                 var content = client.DownloadStringWithRetry("", 3);
 264                 client.AssertStatusOK("List Containers failed");
 265
 266                 if (client.StatusCode == HttpStatusCode.NoContent)
 267                     return new List<ContainerInfo>();
 268                 var infos = JsonConvert.DeserializeObject<IList<ContainerInfo>>(content);
 269
 270                 foreach (var info in infos)
 271                 {
 272                     info.Account = account;
 273                 }
 274                 return infos;
 275             }
 276
 277         }
 278
 279         private string GetAccountUrl(string account)
 280         {
 281             return new Uri(RootAddressUri, new Uri(account,UriKind.Relative)).AbsoluteUri;
 282         }
 283
 284         public IList<ShareAccountInfo> ListSharingAccounts(DateTime? since=null)
 285         {
 286             using (ThreadContext.Stacks["Share"].Push("List Accounts"))
 287             {
 288                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 289
 290                 using (var client = new RestClient(_baseClient))
 291                 {
 292                     client.Parameters.Clear();
 293                     client.Parameters.Add("format", "json");
 294                     client.IfModifiedSince = since;
 295
 296                     //Extract the username from the base address
 297                     client.BaseAddress = RootAddressUri.AbsoluteUri;
 298
 299                     var content = client.DownloadStringWithRetry(@"", 3);
 300
 301                     client.AssertStatusOK("ListSharingAccounts failed");
 302
 303                     //If the result is empty, return an empty list,
 304                     var infos = String.IsNullOrWhiteSpace(content)
 305                                     ? new List<ShareAccountInfo>()
 306                                 //Otherwise deserialize the account list into a list of ShareAccountInfos
 307                                     : JsonConvert.DeserializeObject<IList<ShareAccountInfo>>(content);
 308
 309                     Log.DebugFormat("END");
 310                     return infos;
 311                 }
 312             }
 313         }
 314
 315         //Request listing of all objects in a container modified since a specific time.
 316         //If the *since* value is missing, return all objects
 317         public IList<ObjectInfo> ListSharedObjects(DateTime? since = null)
 318         {
 319
 320             using (ThreadContext.Stacks["Share"].Push("List Objects"))
 321             {
 322                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 323                 //'since' is not used here because we need to have ListObjects return a NoChange result
 324                 //for all shared accounts,containers
 325                 var accounts = ListSharingAccounts();
 326                 var items = from account in accounts
 327                             let containers = ListContainers(account.name)
 328                             from container in containers
 329                             select ListObjects(account.name, container.Name,since);
 330                 var objects=items.SelectMany(r=> r).ToList();
 331 /*
 332                 var objects = new List<ObjectInfo>();
 333                 foreach (var containerObjects in items)
 334                 {
 335                     objects.AddRange(containerObjects);
 336                 }
 337 */
 338                 if (Log.IsDebugEnabled) Log.DebugFormat("END");
 339                 return objects;
 340             }
 341         }
 342
 343         public void SetTags(ObjectInfo target,IDictionary<string,string> tags)
 344         {
 345             if (String.IsNullOrWhiteSpace(Token))
 346                 throw new InvalidOperationException("The Token is not set");
 347             if (StorageUrl == null)
 348                 throw new InvalidOperationException("The StorageUrl is not set");
 349             if (target == null)
 350                 throw new ArgumentNullException("target");
 351             Contract.EndContractBlock();
 352
 353             using (ThreadContext.Stacks["Share"].Push("Share Object"))
 354             {
 355                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 356
 357                 using (var client = new RestClient(_baseClient))
 358                 {
 359
 360                     client.BaseAddress = GetAccountUrl(target.Account);
 361
 362                     client.Parameters.Clear();
 363                     client.Parameters.Add("update", "");
 364
 365                     foreach (var tag in tags)
 366                     {
 367                         var headerTag = String.Format("X-Object-Meta-{0}", tag.Key);
 368                         client.Headers.Add(headerTag, tag.Value);
 369                     }
 370
 371                     client.DownloadStringWithRetry(target.Container, 3);
 372
 373
 374                     client.AssertStatusOK("SetTags failed");
 375                     //If the status is NOT ACCEPTED we have a problem
 376                     if (client.StatusCode != HttpStatusCode.Accepted)
 377                     {
 378                         Log.Error("Failed to set tags");
 379                         throw new Exception("Failed to set tags");
 380                     }
 381
 382                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 383                 }
 384             }
 385
 386
 387         }
 388
 389         public void ShareObject(string account, string container, string objectName, string shareTo, bool read, bool write)
 390         {
 391             if (String.IsNullOrWhiteSpace(Token))
 392                 throw new InvalidOperationException("The Token is not set");
 393             if (StorageUrl==null)
 394                 throw new InvalidOperationException("The StorageUrl is not set");
 395             if (String.IsNullOrWhiteSpace(container))
 396                 throw new ArgumentNullException("container");
 397             if (String.IsNullOrWhiteSpace(objectName))
 398                 throw new ArgumentNullException("objectName");
 399             if (String.IsNullOrWhiteSpace(account))
 400                 throw new ArgumentNullException("account");
 401             if (String.IsNullOrWhiteSpace(shareTo))
 402                 throw new ArgumentNullException("shareTo");
 403             Contract.EndContractBlock();
 404
 405             using (ThreadContext.Stacks["Share"].Push("Share Object"))
 406             {
 407                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 408
 409                 using (var client = new RestClient(_baseClient))
 410                 {
 411
 412                     client.BaseAddress = GetAccountUrl(account);
 413
 414                     client.Parameters.Clear();
 415                     client.Parameters.Add("format", "json");
 416
 417                     string permission = "";
 418                     if (write)
 419                         permission = String.Format("write={0}", shareTo);
 420                     else if (read)
 421                         permission = String.Format("read={0}", shareTo);
 422                     client.Headers.Add("X-Object-Sharing", permission);
 423
 424                     var content = client.DownloadStringWithRetry(container, 3);
 425
 426                     client.AssertStatusOK("ShareObject failed");
 427
 428                     //If the result is empty, return an empty list,
 429                     var infos = String.IsNullOrWhiteSpace(content)
 430                                     ? new List<ObjectInfo>()
 431                                 //Otherwise deserialize the object list into a list of ObjectInfos
 432                                     : JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 433
 434                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 435                 }
 436             }
 437
 438
 439         }
 440
 441         public AccountInfo GetAccountPolicies(AccountInfo accountInfo)
 442         {
 443             if (accountInfo==null)
 444                 throw new ArgumentNullException("accountInfo");
 445             Contract.EndContractBlock();
 446
 447             using (ThreadContext.Stacks["Account"].Push("GetPolicies"))
 448             {
 449                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 450
 451                 using (var client = new RestClient(_baseClient))
 452                 {
 453                     if (!String.IsNullOrWhiteSpace(accountInfo.UserName))
 454                         client.BaseAddress = GetAccountUrl(accountInfo.UserName);
 455
 456                     client.Parameters.Clear();
 457                     client.Parameters.Add("format", "json");
 458                     client.Head(String.Empty, 3);
 459
 460                     var quotaValue=client.ResponseHeaders["X-Account-Policy-Quota"];
 461                     var bytesValue= client.ResponseHeaders["X-Account-Bytes-Used"];
 462
 463                     long quota, bytes;
 464                     if (long.TryParse(quotaValue, out quota))
 465                         accountInfo.Quota = quota;
 466                     if (long.TryParse(bytesValue, out bytes))
 467                         accountInfo.BytesUsed = bytes;
 468
 469                     return accountInfo;
 470
 471                 }
 472
 473             }
 474         }
 475
 476         public void UpdateMetadata(ObjectInfo objectInfo)
 477         {
 478             if (objectInfo == null)
 479                 throw new ArgumentNullException("objectInfo");
 480             Contract.EndContractBlock();
 481
 482             using (ThreadContext.Stacks["Objects"].Push("UpdateMetadata"))
 483             {
 484                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 485
 486
 487                 using(var client=new RestClient(_baseClient))
 488                 {
 489
 490                     client.BaseAddress = GetAccountUrl(objectInfo.Account);
 491
 492                     client.Parameters.Clear();
 493
 494
 495                     //Set Tags
 496                     foreach (var tag in objectInfo.Tags)
 497                     {
 498                         var headerTag = String.Format("X-Object-Meta-{0}", tag.Key);
 499                         client.Headers.Add(headerTag, tag.Value);
 500                     }
 501
 502                     //Set Permissions
 503
 504                     var permissions=objectInfo.GetPermissionString();
 505                     client.SetNonEmptyHeaderValue("X-Object-Sharing",permissions);
 506
 507                     client.SetNonEmptyHeaderValue("Content-Disposition",objectInfo.ContendDisposition);
 508                     client.SetNonEmptyHeaderValue("Content-Encoding",objectInfo.ContentEncoding);
 509                     client.SetNonEmptyHeaderValue("X-Object-Manifest",objectInfo.Manifest);
 510                     var isPublic = objectInfo.IsPublic.ToString().ToLower();
 511                     client.Headers.Add("X-Object-Public", isPublic);
 512
 513
 514                     var uriBuilder = client.GetAddressBuilder(objectInfo.Container, objectInfo.Name);
 515                     var uri = uriBuilder.Uri;
 516
 517                     client.UploadValues(uri,new NameValueCollection());
 518
 519
 520                     client.AssertStatusOK("UpdateMetadata failed");
 521                     //If the status is NOT ACCEPTED or OK we have a problem
 522                     if (!(client.StatusCode == HttpStatusCode.Accepted || client.StatusCode == HttpStatusCode.OK))
 523                     {
 524                         Log.Error("Failed to update metadata");
 525                         throw new Exception("Failed to update metadata");
 526                     }
 527
 528                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 529                 }
 530             }
 531
 532         }
 533
 534         public void UpdateMetadata(ContainerInfo containerInfo)
 535         {
 536             if (containerInfo == null)
 537                 throw new ArgumentNullException("containerInfo");
 538             Contract.EndContractBlock();
 539
 540             using (ThreadContext.Stacks["Containers"].Push("UpdateMetadata"))
 541             {
 542                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 543
 544
 545                 using(var client=new RestClient(_baseClient))
 546                 {
 547
 548                     client.BaseAddress = GetAccountUrl(containerInfo.Account);
 549
 550                     client.Parameters.Clear();
 551
 552
 553                     //Set Tags
 554                     foreach (var tag in containerInfo.Tags)
 555                     {
 556                         var headerTag = String.Format("X-Container-Meta-{0}", tag.Key);
 557                         client.Headers.Add(headerTag, tag.Value);
 558                     }
 559
 560
 561                     //Set Policies
 562                     foreach (var policy in containerInfo.Policies)
 563                     {
 564                         var headerPolicy = String.Format("X-Container-Policy-{0}", policy.Key);
 565                         client.Headers.Add(headerPolicy, policy.Value);
 566                     }
 567
 568
 569                     var uriBuilder = client.GetAddressBuilder(containerInfo.Name,"");
 570                     var uri = uriBuilder.Uri;
 571
 572                     client.UploadValues(uri,new NameValueCollection());
 573
 574
 575                     client.AssertStatusOK("UpdateMetadata failed");
 576                     //If the status is NOT ACCEPTED or OK we have a problem
 577                     if (!(client.StatusCode == HttpStatusCode.Accepted || client.StatusCode == HttpStatusCode.OK))
 578                     {
 579                         Log.Error("Failed to update metadata");
 580                         throw new Exception("Failed to update metadata");
 581                     }
 582
 583                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 584                 }
 585             }
 586
 587         }
 588
 589
 590         public IList<ObjectInfo> ListObjects(string account, string container, DateTime? since = null)
 591         {
 592             if (String.IsNullOrWhiteSpace(container))
 593                 throw new ArgumentNullException("container");
 594             Contract.EndContractBlock();
 595
 596             using (ThreadContext.Stacks["Objects"].Push("List"))
 597             {
 598                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 599
 600                 using (var client = new RestClient(_baseClient))
 601                 {
 602                     if (!String.IsNullOrWhiteSpace(account))
 603                         client.BaseAddress = GetAccountUrl(account);
 604
 605                     client.Parameters.Clear();
 606                     client.Parameters.Add("format", "json");
 607                     client.IfModifiedSince = since;
 608                     var content = client.DownloadStringWithRetry(container, 3);
 609
 610                     client.AssertStatusOK("ListObjects failed");
 611
 612                     if (client.StatusCode==HttpStatusCode.NotModified)
 613                         return new[]{new NoModificationInfo(account,container)};
 614                     //If the result is empty, return an empty list,
 615                     var infos = String.IsNullOrWhiteSpace(content)
 616                                     ? new List<ObjectInfo>()
 617                                 //Otherwise deserialize the object list into a list of ObjectInfos
 618                                     : JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 619
 620                     foreach (var info in infos)
 621                     {
 622                         info.Container = container;
 623                         info.Account = account;
 624                         info.StorageUri = this.StorageUrl;
 625                     }
 626                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 627                     return infos;
 628                 }
 629             }
 630         }
 631
 632         public IList<ObjectInfo> ListObjects(string account, string container, string folder, DateTime? since = null)
 633         {
 634             if (String.IsNullOrWhiteSpace(container))
 635                 throw new ArgumentNullException("container");
 636 /*
 637             if (String.IsNullOrWhiteSpace(folder))
 638                 throw new ArgumentNullException("folder");
 639 */
 640             Contract.EndContractBlock();
 641
 642             using (ThreadContext.Stacks["Objects"].Push("List"))
 643             {
 644                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 645
 646                 using (var client = new RestClient(_baseClient))
 647                 {
 648                     if (!String.IsNullOrWhiteSpace(account))
 649                         client.BaseAddress = GetAccountUrl(account);
 650
 651                     client.Parameters.Clear();
 652                     client.Parameters.Add("format", "json");
 653                     client.Parameters.Add("path", folder);
 654                     client.IfModifiedSince = since;
 655                     var content = client.DownloadStringWithRetry(container, 3);
 656                     client.AssertStatusOK("ListObjects failed");
 657
 658                     if (client.StatusCode==HttpStatusCode.NotModified)
 659                         return new[]{new NoModificationInfo(account,container,folder)};
 660
 661                     var infos = JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 662                     foreach (var info in infos)
 663                     {
 664                         info.Account = account;
 665                         if (info.Container == null)
 666                             info.Container = container;
 667                         info.StorageUri = this.StorageUrl;
 668                     }
 669                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 670                     return infos;
 671                 }
 672             }
 673         }
 674
 675
 676         public bool ContainerExists(string account, string container)
 677         {
 678             if (String.IsNullOrWhiteSpace(container))
 679                 throw new ArgumentNullException("container", "The container property can't be empty");
 680             Contract.EndContractBlock();
 681
 682             using (ThreadContext.Stacks["Containters"].Push("Exists"))
 683             {
 684                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 685
 686                 using (var client = new RestClient(_baseClient))
 687                 {
 688                     if (!String.IsNullOrWhiteSpace(account))
 689                         client.BaseAddress = GetAccountUrl(account);
 690
 691                     client.Parameters.Clear();
 692                     client.Head(container, 3);
 693
 694                     bool result;
 695                     switch (client.StatusCode)
 696                     {
 697                         case HttpStatusCode.OK:
 698                         case HttpStatusCode.NoContent:
 699                             result=true;
 700                             break;
 701                         case HttpStatusCode.NotFound:
 702                             result=false;
 703                             break;
 704                         default:
 705                             throw CreateWebException("ContainerExists", client.StatusCode);
 706                     }
 707                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 708
 709                     return result;
 710                 }
 711
 712             }
 713         }
 714
 715         public bool ObjectExists(string account, string container, string objectName)
 716         {
 717             if (String.IsNullOrWhiteSpace(container))
 718                 throw new ArgumentNullException("container", "The container property can't be empty");
 719             if (String.IsNullOrWhiteSpace(objectName))
 720                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 721             Contract.EndContractBlock();
 722
 723             using (var client = new RestClient(_baseClient))
 724             {
 725                 if (!String.IsNullOrWhiteSpace(account))
 726                     client.BaseAddress = GetAccountUrl(account);
 727
 728                 client.Parameters.Clear();
 729                 client.Head(container + "/" + objectName, 3);
 730
 731                 switch (client.StatusCode)
 732                 {
 733                     case HttpStatusCode.OK:
 734                     case HttpStatusCode.NoContent:
 735                         return true;
 736                     case HttpStatusCode.NotFound:
 737                         return false;
 738                     default:
 739                         throw CreateWebException("ObjectExists", client.StatusCode);
 740                 }
 741             }
 742
 743         }
 744
 745         public ObjectInfo GetObjectInfo(string account, string container, string objectName)
 746         {
 747             if (String.IsNullOrWhiteSpace(container))
 748                 throw new ArgumentNullException("container", "The container property can't be empty");
 749             if (String.IsNullOrWhiteSpace(objectName))
 750                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 751             Contract.EndContractBlock();
 752
 753             using (ThreadContext.Stacks["Objects"].Push("GetObjectInfo"))
 754             {
 755
 756                 using (var client = new RestClient(_baseClient))
 757                 {
 758                     if (!String.IsNullOrWhiteSpace(account))
 759                         client.BaseAddress = GetAccountUrl(account);
 760                     try
 761                     {
 762                         client.Parameters.Clear();
 763
 764                         client.Head(container + "/" + objectName, 3);
 765
 766                         if (client.TimedOut)
 767                             return ObjectInfo.Empty;
 768
 769                         switch (client.StatusCode)
 770                         {
 771                             case HttpStatusCode.OK:
 772                             case HttpStatusCode.NoContent:
 773                                 var keys = client.ResponseHeaders.AllKeys.AsQueryable();
 774                                 var tags = client.GetMeta("X-Object-Meta-");
 775                                 var extensions = (from key in keys
 776                                                   where key.StartsWith("X-Object-") && !key.StartsWith("X-Object-Meta-")
 777                                                   select new {Name = key, Value = client.ResponseHeaders[key]})
 778                                     .ToDictionary(t => t.Name, t => t.Value);
 779
 780                                 var permissions=client.GetHeaderValue("X-Object-Sharing", true);
 781
 782
 783                                 var info = new ObjectInfo
 784                                                {
 785                                                    Account = account,
 786                                                    Container = container,
 787                                                    Name = objectName,
 788                                                    Hash = client.GetHeaderValue("ETag"),
 789                                                    Content_Type = client.GetHeaderValue("Content-Type"),
 790                                                    Bytes = Convert.ToInt64(client.GetHeaderValue("Content-Length",true)),
 791                                                    Tags = tags,
 792                                                    Last_Modified = client.LastModified,
 793                                                    Extensions = extensions,
 794                                                    ContentEncoding=client.GetHeaderValue("Content-Encoding",true),
 795                                                    ContendDisposition = client.GetHeaderValue("Content-Disposition",true),
 796                                                    Manifest=client.GetHeaderValue("X-Object-Manifest",true),
 797                                                    PublicUrl=client.GetHeaderValue("X-Object-Public",true),
 798                                                };
 799                                 info.SetPermissions(permissions);
 800                                 return info;
 801                             case HttpStatusCode.NotFound:
 802                                 return ObjectInfo.Empty;
 803                             default:
 804                                 throw new WebException(
 805                                     String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}",
 806                                                   objectName, client.StatusCode));
 807                         }
 808
 809                     }
 810                     catch (RetryException)
 811                     {
 812                         Log.WarnFormat("[RETRY FAIL] GetObjectInfo for {0} failed.",objectName);
 813                         return ObjectInfo.Empty;
 814                     }
 815                     catch (WebException e)
 816                     {
 817                         Log.Error(
 818                             String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}",
 819                                           objectName, client.StatusCode), e);
 820                         throw;
 821                     }
 822                 }
 823             }
 824
 825         }
 826
 827         public void CreateFolder(string account, string container, string folder)
 828         {
 829             if (String.IsNullOrWhiteSpace(container))
 830                 throw new ArgumentNullException("container", "The container property can't be empty");
 831             if (String.IsNullOrWhiteSpace(folder))
 832                 throw new ArgumentNullException("folder", "The folder property can't be empty");
 833             Contract.EndContractBlock();
 834
 835             var folderUrl=String.Format("{0}/{1}",container,folder);
 836             using (var client = new RestClient(_baseClient))
 837             {
 838                 if (!String.IsNullOrWhiteSpace(account))
 839                     client.BaseAddress = GetAccountUrl(account);
 840
 841                 client.Parameters.Clear();
 842                 client.Headers.Add("Content-Type", @"application/directory");
 843                 client.Headers.Add("Content-Length", "0");
 844                 client.PutWithRetry(folderUrl, 3);
 845
 846                 if (client.StatusCode != HttpStatusCode.Created && client.StatusCode != HttpStatusCode.Accepted)
 847                     throw CreateWebException("CreateFolder", client.StatusCode);
 848             }
 849         }
 850
 851
 852
 853         public ContainerInfo GetContainerInfo(string account, string container)
 854         {
 855             if (String.IsNullOrWhiteSpace(container))
 856                 throw new ArgumentNullException("container", "The container property can't be empty");
 857             Contract.EndContractBlock();
 858
 859             using (var client = new RestClient(_baseClient))
 860             {
 861                 if (!String.IsNullOrWhiteSpace(account))
 862                     client.BaseAddress = GetAccountUrl(account);
 863
 864                 client.Head(container);
 865                 switch (client.StatusCode)
 866                 {
 867                     case HttpStatusCode.OK:
 868                     case HttpStatusCode.NoContent:
 869                         var tags = client.GetMeta("X-Container-Meta-");
 870                         var policies = client.GetMeta("X-Container-Policy-");
 871
 872                         var containerInfo = new ContainerInfo
 873                                                 {
 874                                                     Account=account,
 875                                                     Name = container,
 876                                                     Count =
 877                                                         long.Parse(client.GetHeaderValue("X-Container-Object-Count")),
 878                                                     Bytes = long.Parse(client.GetHeaderValue("X-Container-Bytes-Used")),
 879                                                     BlockHash = client.GetHeaderValue("X-Container-Block-Hash"),
 880                                                     BlockSize=int.Parse(client.GetHeaderValue("X-Container-Block-Size")),
 881                                                     Last_Modified=client.LastModified,
 882                                                     Tags=tags,
 883                                                     Policies=policies
 884                                                 };
 885
 886
 887                         return containerInfo;
 888                     case HttpStatusCode.NotFound:
 889                         return ContainerInfo.Empty;
 890                     default:
 891                         throw CreateWebException("GetContainerInfo", client.StatusCode);
 892                 }
 893             }
 894         }
 895
 896         public void CreateContainer(string account, string container)
 897         {
 898             if (String.IsNullOrWhiteSpace(account))
 899                 throw new ArgumentNullException("account");
 900             if (String.IsNullOrWhiteSpace(container))
 901                 throw new ArgumentNullException("container");
 902             Contract.EndContractBlock();
 903
 904             using (var client = new RestClient(_baseClient))
 905             {
 906                 if (!String.IsNullOrWhiteSpace(account))
 907                     client.BaseAddress = GetAccountUrl(account);
 908
 909                 client.PutWithRetry(container, 3);
 910                 var expectedCodes = new[] {HttpStatusCode.Created, HttpStatusCode.Accepted, HttpStatusCode.OK};
 911                 if (!expectedCodes.Contains(client.StatusCode))
 912                     throw CreateWebException("CreateContainer", client.StatusCode);
 913             }
 914         }
 915
 916         public void DeleteContainer(string account, string container)
 917         {
 918             if (String.IsNullOrWhiteSpace(container))
 919                 throw new ArgumentNullException("container", "The container property can't be empty");
 920             Contract.EndContractBlock();
 921
 922             using (var client = new RestClient(_baseClient))
 923             {
 924                 if (!String.IsNullOrWhiteSpace(account))
 925                     client.BaseAddress = GetAccountUrl(account);
 926
 927                 client.DeleteWithRetry(container, 3);
 928                 var expectedCodes = new[] {HttpStatusCode.NotFound, HttpStatusCode.NoContent};
 929                 if (!expectedCodes.Contains(client.StatusCode))
 930                     throw CreateWebException("DeleteContainer", client.StatusCode);
 931             }
 932
 933         }
 934
 935         /// <summary>
 936         ///
 937         /// </summary>
 938         /// <param name="account"></param>
 939         /// <param name="container"></param>
 940         /// <param name="objectName"></param>
 941         /// <param name="fileName"></param>
 942         /// <returns></returns>
 943         /// <remarks>This method should have no timeout or a very long one</remarks>
 944         //Asynchronously download the object specified by *objectName* in a specific *container* to
 945         // a local file
 946         public Task GetObject(string account, string container, string objectName, string fileName)
 947         {
 948             if (String.IsNullOrWhiteSpace(container))
 949                 throw new ArgumentNullException("container", "The container property can't be empty");
 950             if (String.IsNullOrWhiteSpace(objectName))
 951                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 952             Contract.EndContractBlock();
 953
 954             try
 955             {
 956                 //WebClient, and by extension RestClient, are not thread-safe. Create a new RestClient
 957                 //object to avoid concurrency errors.
 958                 //
 959                 //Download operations take a long time therefore they have no timeout.
 960                 var client = new RestClient(_baseClient) { Timeout = 0 };
 961                 if (!String.IsNullOrWhiteSpace(account))
 962                     client.BaseAddress = GetAccountUrl(account);
 963
 964                 //The container and objectName are relative names. They are joined with the client's
 965                 //BaseAddress to create the object's absolute address
 966                 var builder = client.GetAddressBuilder(container, objectName);
 967                 var uri = builder.Uri;
 968
 969                 //Download progress is reported to the Trace log
 970                 Log.InfoFormat("[GET] START {0}", objectName);
 971                 client.DownloadProgressChanged += (sender, args) =>
 972                     Log.InfoFormat("[GET PROGRESS] {0} {1}% {2} of {3}",
 973                                     fileName, args.ProgressPercentage,
 974                                     args.BytesReceived,
 975                                     args.TotalBytesToReceive);
 976
 977
 978                 //Start downloading the object asynchronously
 979                 var downloadTask = client.DownloadFileTask(uri, fileName);
 980
 981                 //Once the download completes
 982                 return downloadTask.ContinueWith(download =>
 983                                       {
 984                                           //Delete the local client object
 985                                           client.Dispose();
 986                                           //And report failure or completion
 987                                           if (download.IsFaulted)
 988                                           {
 989                                               Log.ErrorFormat("[GET] FAIL for {0} with \r{1}", objectName,
 990                                                                download.Exception);
 991                                           }
 992                                           else
 993                                           {
 994                                               Log.InfoFormat("[GET] END {0}", objectName);
 995                                           }
 996                                       });
 997             }
 998             catch (Exception exc)
 999             {
1000                 Log.ErrorFormat("[GET] END {0} with {1}", objectName, exc);
1001                 throw;
1002             }
1003
1004
1005
1006         }
1007
1008         public Task<IList<string>> PutHashMap(string account, string container, string objectName, TreeHash hash)
1009         {
1010             if (String.IsNullOrWhiteSpace(container))
1011                 throw new ArgumentNullException("container");
1012             if (String.IsNullOrWhiteSpace(objectName))
1013                 throw new ArgumentNullException("objectName");
1014             if (hash==null)
1015                 throw new ArgumentNullException("hash");
1016             if (String.IsNullOrWhiteSpace(Token))
1017                 throw new InvalidOperationException("Invalid Token");
1018             if (StorageUrl == null)
1019                 throw new InvalidOperationException("Invalid Storage Url");
1020             Contract.EndContractBlock();
1021
1022
1023             //Don't use a timeout because putting the hashmap may be a long process
1024             var client = new RestClient(_baseClient) { Timeout = 0 };
1025             if (!String.IsNullOrWhiteSpace(account))
1026                 client.BaseAddress = GetAccountUrl(account);
1027
1028             //The container and objectName are relative names. They are joined with the client's
1029             //BaseAddress to create the object's absolute address
1030             var builder = client.GetAddressBuilder(container, objectName);
1031             builder.Query = "format=json&hashmap";
1032             var uri = builder.Uri;
1033
1034
1035             //Send the tree hash as Json to the server
1036             client.Headers[HttpRequestHeader.ContentType] = "application/octet-stream";
1037             var jsonHash = hash.ToJson();
1038             var uploadTask=client.UploadStringTask(uri, "PUT", jsonHash);
1039
1040             return uploadTask.ContinueWith(t =>
1041             {
1042
1043                 var empty = (IList<string>)new List<string>();
1044
1045
1046                 //The server will respond either with 201-created if all blocks were already on the server
1047                 if (client.StatusCode == HttpStatusCode.Created)
1048                 {
1049                     //in which case we return an empty hash list
1050                     return empty;
1051                 }
1052                 //or with a 409-conflict and return the list of missing parts
1053                 //A 409 will cause an exception so we need to check t.IsFaulted to avoid propagating the exception
1054                 if (t.IsFaulted)
1055                 {
1056                     var ex = t.Exception.InnerException;
1057                     var we = ex as WebException;
1058                     var response = we.Response as HttpWebResponse;
1059                     if (response!=null && response.StatusCode==HttpStatusCode.Conflict)
1060                     {
1061                         //In case of 409 the missing parts will be in the response content
1062                         using (var stream = response.GetResponseStream())
1063                         using(var reader=new StreamReader(stream))
1064                         {
1065                             Debug.Assert(stream.Position == 0);
1066                             //We used to have to cleanup the content before returning it because it contains
1067                             //error content after the list of hashes
1068                             //
1069                             //As of 30/1/2012, the result is a proper Json array so we don't need to read the content
1070                             //line by line
1071
1072                             var serializer = new JsonSerializer();
1073                             var hashes=(List<string>)serializer.Deserialize(reader, typeof (List<string>));
1074
1075                             return hashes;
1076                         }
1077                     }
1078                     //Any other status code is unexpected and the exception should be rethrown
1079                     throw ex;
1080
1081                 }
1082                 //Any other status code is unexpected but there was no exception. We can probably continue processing
1083                 Log.WarnFormat("Unexcpected status code when putting map: {0} - {1}",client.StatusCode,client.StatusDescription);
1084
1085                 return empty;
1086             });
1087
1088         }
1089
1090         public Task<byte[]> GetBlock(string account, string container, Uri relativeUrl, long start, long? end)
1091         {
1092             if (String.IsNullOrWhiteSpace(Token))
1093                 throw new InvalidOperationException("Invalid Token");
1094             if (StorageUrl == null)
1095                 throw new InvalidOperationException("Invalid Storage Url");
1096             if (String.IsNullOrWhiteSpace(container))
1097                 throw new ArgumentNullException("container");
1098             if (relativeUrl== null)
1099                 throw new ArgumentNullException("relativeUrl");
1100             if (end.HasValue && end<0)
1101                 throw new ArgumentOutOfRangeException("end");
1102             if (start<0)
1103                 throw new ArgumentOutOfRangeException("start");
1104             Contract.EndContractBlock();
1105
1106
1107             //Don't use a timeout because putting the hashmap may be a long process
1108             var client = new RestClient(_baseClient) {Timeout = 0, RangeFrom = start, RangeTo = end};
1109             if (!String.IsNullOrWhiteSpace(account))
1110                 client.BaseAddress = GetAccountUrl(account);
1111
1112             var builder = client.GetAddressBuilder(container, relativeUrl.ToString());
1113             var uri = builder.Uri;
1114
1115             return client.DownloadDataTask(uri)
1116                 .ContinueWith(t=>
1117                                   {
1118                                       client.Dispose();
1119                                       return t.Result;
1120                                   });
1121         }
1122
1123
1124         public async Task PostBlock(string account, string container, byte[] block, int offset, int count)
1125         {
1126             if (String.IsNullOrWhiteSpace(container))
1127                 throw new ArgumentNullException("container");
1128             if (block == null)
1129                 throw new ArgumentNullException("block");
1130             if (offset < 0 || offset >= block.Length)
1131                 throw new ArgumentOutOfRangeException("offset");
1132             if (count < 0 || count > block.Length)
1133                 throw new ArgumentOutOfRangeException("count");
1134             if (String.IsNullOrWhiteSpace(Token))
1135                 throw new InvalidOperationException("Invalid Token");
1136             if (StorageUrl == null)
1137                 throw new InvalidOperationException("Invalid Storage Url");
1138             Contract.EndContractBlock();
1139
1140
1141             try
1142             {
1143
1144             //Don't use a timeout because putting the hashmap may be a long process
1145                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1146                 {
1147                     if (!String.IsNullOrWhiteSpace(account))
1148                         client.BaseAddress = GetAccountUrl(account);
1149
1150                     var builder = client.GetAddressBuilder(container, "");
1151                     //We are doing an update
1152                     builder.Query = "update";
1153                     var uri = builder.Uri;
1154
1155                     client.Headers[HttpRequestHeader.ContentType] = "application/octet-stream";
1156
1157                     Log.InfoFormat("[BLOCK POST] START");
1158
1159                     client.UploadProgressChanged += (sender, args) =>
1160                                                     Log.InfoFormat("[BLOCK POST PROGRESS] {0}% {1} of {2}",
1161                                                                    args.ProgressPercentage, args.BytesSent,
1162                                                                    args.TotalBytesToSend);
1163                     client.UploadFileCompleted += (sender, args) =>
1164                                                   Log.InfoFormat("[BLOCK POST PROGRESS] Completed ");
1165
1166                     var buffer = new byte[count];
1167                     Buffer.BlockCopy(block, offset, buffer, 0, count);
1168                     //Send the block
1169                     await client.UploadDataTask(uri, "POST", buffer);
1170                     Log.InfoFormat("[BLOCK POST] END");
1171                 }
1172             }
1173             catch (Exception exc)
1174             {
1175                 Log.ErrorFormat("[BLOCK POST] FAIL with \r{0}", exc);
1176                 throw;
1177             }
1178         }
1179
1180
1181         public async Task<TreeHash> GetHashMap(string account, string container, string objectName)
1182         {
1183             if (String.IsNullOrWhiteSpace(container))
1184                 throw new ArgumentNullException("container");
1185             if (String.IsNullOrWhiteSpace(objectName))
1186                 throw new ArgumentNullException("objectName");
1187             if (String.IsNullOrWhiteSpace(Token))
1188                 throw new InvalidOperationException("Invalid Token");
1189             if (StorageUrl == null)
1190                 throw new InvalidOperationException("Invalid Storage Url");
1191             Contract.EndContractBlock();
1192
1193             try
1194             {
1195                 //WebClient, and by extension RestClient, are not thread-safe. Create a new RestClient
1196                 //object to avoid concurrency errors.
1197                 //
1198                 //Download operations take a long time therefore they have no timeout.
1199                 //TODO: Do they really? this is a hashmap operation, not a download
1200
1201                 //Start downloading the object asynchronously
1202                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1203                 {
1204                     if (!String.IsNullOrWhiteSpace(account))
1205                         client.BaseAddress = GetAccountUrl(account);
1206
1207                     //The container and objectName are relative names. They are joined with the client's
1208                     //BaseAddress to create the object's absolute address
1209                     var builder = client.GetAddressBuilder(container, objectName);
1210                     builder.Query = "format=json&hashmap";
1211                     var uri = builder.Uri;
1212
1213
1214                     var json = await client.DownloadStringTaskAsync(uri);
1215                     var treeHash = TreeHash.Parse(json);
1216                     Log.InfoFormat("[GET HASH] END {0}", objectName);
1217                     return treeHash;
1218                 }
1219             }
1220             catch (Exception exc)
1221             {
1222                 Log.ErrorFormat("[GET HASH] END {0} with {1}", objectName, exc);
1223                 throw;
1224             }
1225
1226         }
1227
1228
1229         /// <summary>
1230         ///
1231         /// </summary>
1232         /// <param name="account"></param>
1233         /// <param name="container"></param>
1234         /// <param name="objectName"></param>
1235         /// <param name="fileName"></param>
1236         /// <param name="hash">Optional hash value for the file. If no hash is provided, the method calculates a new hash</param>
1237         /// <remarks>>This method should have no timeout or a very long one</remarks>
1238         public async Task PutObject(string account, string container, string objectName, string fileName, string hash = null, string contentType = "application/octet-stream")
1239         {
1240             if (String.IsNullOrWhiteSpace(container))
1241                 throw new ArgumentNullException("container", "The container property can't be empty");
1242             if (String.IsNullOrWhiteSpace(objectName))
1243                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
1244             if (String.IsNullOrWhiteSpace(fileName))
1245                 throw new ArgumentNullException("fileName", "The fileName property can't be empty");
1246 /*
1247             if (!File.Exists(fileName) && !Directory.Exists(fileName))
1248                 throw new FileNotFoundException("The file or directory does not exist",fileName);
1249 */
1250             Contract.EndContractBlock();
1251
1252             try
1253             {
1254
1255                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1256                 {
1257                     if (!String.IsNullOrWhiteSpace(account))
1258                         client.BaseAddress = GetAccountUrl(account);
1259
1260                     var builder = client.GetAddressBuilder(container, objectName);
1261                     var uri = builder.Uri;
1262
1263                     string etag = hash ?? CalculateHash(fileName);
1264
1265                     client.Headers.Add("Content-Type", contentType);
1266                     client.Headers.Add("ETag", etag);
1267
1268
1269                     Log.InfoFormat("[PUT] START {0}", objectName);
1270                     client.UploadProgressChanged += (sender, args) =>
1271                                                         {
1272                                                             using (ThreadContext.Stacks["PUT"].Push("Progress"))
1273                                                             {
1274                                                                 Log.InfoFormat("{0} {1}% {2} of {3}", fileName,
1275                                                                                args.ProgressPercentage,
1276                                                                                args.BytesSent, args.TotalBytesToSend);
1277                                                             }
1278                                                         };
1279
1280                     client.UploadFileCompleted += (sender, args) =>
1281                                                       {
1282                                                           using (ThreadContext.Stacks["PUT"].Push("Progress"))
1283                                                           {
1284                                                               Log.InfoFormat("Completed {0}", fileName);
1285                                                           }
1286                                                       };
1287                     if (contentType=="application/directory")
1288                         await client.UploadDataTaskAsync(uri, "PUT", new byte[0]);
1289                     else
1290                         await client.UploadFileTaskAsync(uri, "PUT", fileName);
1291                 }
1292
1293                 Log.InfoFormat("[PUT] END {0}", objectName);
1294             }
1295             catch (Exception exc)
1296             {
1297                 Log.ErrorFormat("[PUT] END {0} with {1}", objectName, exc);
1298                 throw;
1299             }
1300
1301         }
1302
1303
1304         private static string CalculateHash(string fileName)
1305         {
1306             Contract.Requires(!String.IsNullOrWhiteSpace(fileName));
1307             Contract.EndContractBlock();
1308
1309             string hash;
1310             using (var hasher = MD5.Create())
1311             using(var stream=File.OpenRead(fileName))
1312             {
1313                 var hashBuilder=new StringBuilder();
1314                 foreach (byte b in hasher.ComputeHash(stream))
1315                     hashBuilder.Append(b.ToString("x2").ToLower());
1316                 hash = hashBuilder.ToString();
1317             }
1318             return hash;
1319         }
1320
1321         public void MoveObject(string account, string sourceContainer, string oldObjectName, string targetContainer, string newObjectName)
1322         {
1323             if (String.IsNullOrWhiteSpace(sourceContainer))
1324                 throw new ArgumentNullException("sourceContainer", "The container property can't be empty");
1325             if (String.IsNullOrWhiteSpace(oldObjectName))
1326                 throw new ArgumentNullException("oldObjectName", "The oldObjectName property can't be empty");
1327             if (String.IsNullOrWhiteSpace(targetContainer))
1328                 throw new ArgumentNullException("targetContainer", "The container property can't be empty");
1329             if (String.IsNullOrWhiteSpace(newObjectName))
1330                 throw new ArgumentNullException("newObjectName", "The newObjectName property can't be empty");
1331             Contract.EndContractBlock();
1332
1333             var targetUrl = targetContainer + "/" + newObjectName;
1334             var sourceUrl = String.Format("/{0}/{1}", sourceContainer, oldObjectName);
1335
1336             using (var client = new RestClient(_baseClient))
1337             {
1338                 if (!String.IsNullOrWhiteSpace(account))
1339                     client.BaseAddress = GetAccountUrl(account);
1340
1341                 client.Headers.Add("X-Move-From", sourceUrl);
1342                 client.PutWithRetry(targetUrl, 3);
1343
1344                 var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created};
1345                 if (!expectedCodes.Contains(client.StatusCode))
1346                     throw CreateWebException("MoveObject", client.StatusCode);
1347             }
1348         }
1349
1350         public void DeleteObject(string account, string sourceContainer, string objectName)
1351         {
1352             if (String.IsNullOrWhiteSpace(sourceContainer))
1353                 throw new ArgumentNullException("sourceContainer", "The container property can't be empty");
1354             if (String.IsNullOrWhiteSpace(objectName))
1355                 throw new ArgumentNullException("objectName", "The oldObjectName property can't be empty");
1356             Contract.EndContractBlock();
1357
1358             var targetUrl = FolderConstants.TrashContainer + "/" + objectName;
1359             var sourceUrl = String.Format("/{0}/{1}", sourceContainer, objectName);
1360
1361             using (var client = new RestClient(_baseClient))
1362             {
1363                 if (!String.IsNullOrWhiteSpace(account))
1364                     client.BaseAddress = GetAccountUrl(account);
1365
1366                 client.Headers.Add("X-Move-From", sourceUrl);
1367                 client.AllowedStatusCodes.Add(HttpStatusCode.NotFound);
1368                 client.PutWithRetry(targetUrl, 3);
1369
1370                 var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created,HttpStatusCode.NotFound};
1371                 if (!expectedCodes.Contains(client.StatusCode))
1372                     throw CreateWebException("DeleteObject", client.StatusCode);
1373             }
1374         }
1375
1376
1377         private static WebException CreateWebException(string operation, HttpStatusCode statusCode)
1378         {
1379             return new WebException(String.Format("{0} failed with unexpected status code {1}", operation, statusCode));
1380         }
1381
1382
1383 /*
1384         public IEnumerable<ObjectInfo> ListDirectories(ContainerInfo container)
1385         {
1386             var directories=this.ListObjects(container.Account, container.Name, "/");
1387         }
1388 */
1389     }
1390
1391     public class ShareAccountInfo
1392     {
1393         public DateTime? last_modified { get; set; }
1394         public string name { get; set; }
1395     }
1396 }