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.Generic;
  50 using System.Collections.Specialized;
  51 using System.ComponentModel.Composition;
  52 using System.Diagnostics;
  53 using System.Diagnostics.Contracts;
  54 using System.IO;
  55 using System.Linq;
  56 using System.Net;
  57 using System.Reflection;
  58 using System.Security.Cryptography;
  59 using System.Text;
  60 using System.Threading.Tasks;
  61 using Newtonsoft.Json;
  62 using Pithos.Interfaces;
  63 using log4net;
  64
  65 namespace Pithos.Network
  66 {
  67     [Export(typeof(ICloudClient))]
  68     public class CloudFilesClient:ICloudClient
  69     {
  70         private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
  71
  72         //CloudFilesClient uses *_baseClient* internally to communicate with the server
  73         //RestClient provides a REST-friendly interface over the standard WebClient.
  74         private RestClient _baseClient;
  75
  76
  77         //During authentication the client provides a UserName
  78         public string UserName { get; set; }
  79
  80         //and and ApiKey to the server
  81         public string ApiKey { get; set; }
  82
  83         //And receives an authentication Token. This token must be provided in ALL other operations,
  84         //in the X-Auth-Token header
  85         private string _token;
  86         public string Token
  87         {
  88             get { return _token; }
  89             set
  90             {
  91                 _token = value;
  92                 _baseClient.Headers["X-Auth-Token"] = value;
  93             }
  94         }
  95
  96         //The client also receives a StorageUrl after authentication. All subsequent operations must
  97         //use this url
  98         public Uri StorageUrl { get; set; }
  99
 100
 101         protected Uri RootAddressUri { get; set; }
 102
 103        /* private WebProxy _proxy;
 104         public WebProxy Proxy
 105         {
 106             get { return _proxy; }
 107             set
 108             {
 109                 _proxy = value;
 110                 if (_baseClient != null)
 111                     _baseClient.Proxy = value;
 112             }
 113         }
 114 */
 115
 116         /* private Uri _proxy;
 117         public Uri Proxy
 118         {
 119             get { return _proxy; }
 120             set
 121             {
 122                 _proxy = value;
 123                 if (_baseClient != null)
 124                     _baseClient.Proxy = new WebProxy(value);
 125             }
 126         }*/
 127
 128         public double DownloadPercentLimit { get; set; }
 129         public double UploadPercentLimit { get; set; }
 130
 131         public string AuthenticationUrl { get; set; }
 132
 133
 134         public string VersionPath
 135         {
 136             get { return UsePithos ? "v1" : "v1.0"; }
 137         }
 138
 139         public bool UsePithos { get; set; }
 140
 141
 142
 143         public CloudFilesClient(string userName, string apiKey)
 144         {
 145             UserName = userName;
 146             ApiKey = apiKey;
 147         }
 148
 149         public CloudFilesClient(AccountInfo accountInfo)
 150         {
 151             if (accountInfo==null)
 152                 throw new ArgumentNullException("accountInfo");
 153             Contract.Ensures(!String.IsNullOrWhiteSpace(Token));
 154             Contract.Ensures(StorageUrl != null);
 155             Contract.Ensures(_baseClient != null);
 156             Contract.Ensures(RootAddressUri != null);
 157             Contract.EndContractBlock();
 158
 159             _baseClient = new RestClient
 160             {
 161                 BaseAddress = accountInfo.StorageUri.ToString(),
 162                 Timeout = 10000,
 163                 Retries = 3,
 164             };
 165             StorageUrl = accountInfo.StorageUri;
 166             Token = accountInfo.Token;
 167             UserName = accountInfo.UserName;
 168
 169             //Get the root address (StorageUrl without the account)
 170             var storageUrl = StorageUrl.AbsoluteUri;
 171             var usernameIndex = storageUrl.LastIndexOf(UserName);
 172             var rootUrl = storageUrl.Substring(0, usernameIndex);
 173             RootAddressUri = new Uri(rootUrl);
 174         }
 175
 176
 177         public AccountInfo Authenticate()
 178         {
 179             if (String.IsNullOrWhiteSpace(UserName))
 180                 throw new InvalidOperationException("UserName is empty");
 181             if (String.IsNullOrWhiteSpace(ApiKey))
 182                 throw new InvalidOperationException("ApiKey is empty");
 183             if (String.IsNullOrWhiteSpace(AuthenticationUrl))
 184                 throw new InvalidOperationException("AuthenticationUrl is empty");
 185             Contract.Ensures(!String.IsNullOrWhiteSpace(Token));
 186             Contract.Ensures(StorageUrl != null);
 187             Contract.Ensures(_baseClient != null);
 188             Contract.Ensures(RootAddressUri != null);
 189             Contract.EndContractBlock();
 190
 191
 192             Log.InfoFormat("[AUTHENTICATE] Start for {0}", UserName);
 193
 194             var groups = new List<Group>();
 195
 196             using (var authClient = new RestClient{BaseAddress=AuthenticationUrl})
 197             {
 198                /* if (Proxy != null)
 199                     authClient.Proxy = Proxy;*/
 200
 201                 Contract.Assume(authClient.Headers!=null);
 202
 203                 authClient.Headers.Add("X-Auth-User", UserName);
 204                 authClient.Headers.Add("X-Auth-Key", ApiKey);
 205
 206                 authClient.DownloadStringWithRetry(VersionPath, 3);
 207
 208                 authClient.AssertStatusOK("Authentication failed");
 209
 210                 var storageUrl = authClient.GetHeaderValue("X-Storage-Url");
 211                 if (String.IsNullOrWhiteSpace(storageUrl))
 212                     throw new InvalidOperationException("Failed to obtain storage url");
 213
 214                 _baseClient = new RestClient
 215                 {
 216                     BaseAddress = storageUrl,
 217                     Timeout = 10000,
 218                     Retries = 3,
 219                     //Proxy=Proxy
 220                 };
 221
 222                 StorageUrl = new Uri(storageUrl);
 223
 224                 //Get the root address (StorageUrl without the account)
 225                 var usernameIndex=storageUrl.LastIndexOf(UserName);
 226                 var rootUrl = storageUrl.Substring(0, usernameIndex);
 227                 RootAddressUri = new Uri(rootUrl);
 228
 229                 var token = authClient.GetHeaderValue("X-Auth-Token");
 230                 if (String.IsNullOrWhiteSpace(token))
 231                     throw new InvalidOperationException("Failed to obtain token url");
 232                 Token = token;
 233
 234                /* var keys = authClient.ResponseHeaders.AllKeys.AsQueryable();
 235                 groups = (from key in keys
 236                             where key.StartsWith("X-Account-Group-")
 237                             let name = key.Substring(16)
 238                             select new Group(name, authClient.ResponseHeaders[key]))
 239                         .ToList();
 240
 241 */
 242             }
 243
 244             Log.InfoFormat("[AUTHENTICATE] End for {0}", UserName);
 245             Debug.Assert(_baseClient!=null);
 246
 247             return new AccountInfo {StorageUri = StorageUrl, Token = Token, UserName = UserName,Groups=groups};
 248
 249         }
 250
 251
 252
 253         public IList<ContainerInfo> ListContainers(string account)
 254         {
 255             using (var client = new RestClient(_baseClient))
 256             {
 257                 if (!String.IsNullOrWhiteSpace(account))
 258                     client.BaseAddress = GetAccountUrl(account);
 259
 260                 client.Parameters.Clear();
 261                 client.Parameters.Add("format", "json");
 262                 var content = client.DownloadStringWithRetry("", 3);
 263                 client.AssertStatusOK("List Containers failed");
 264
 265                 if (client.StatusCode == HttpStatusCode.NoContent)
 266                     return new List<ContainerInfo>();
 267                 var infos = JsonConvert.DeserializeObject<IList<ContainerInfo>>(content);
 268
 269                 foreach (var info in infos)
 270                 {
 271                     info.Account = account;
 272                 }
 273                 return infos;
 274             }
 275
 276         }
 277
 278         private string GetAccountUrl(string account)
 279         {
 280             return new Uri(RootAddressUri, new Uri(account,UriKind.Relative)).AbsoluteUri;
 281         }
 282
 283         public IList<ShareAccountInfo> ListSharingAccounts(DateTime? since=null)
 284         {
 285             using (ThreadContext.Stacks["Share"].Push("List Accounts"))
 286             {
 287                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 288
 289                 using (var client = new RestClient(_baseClient))
 290                 {
 291                     client.Parameters.Clear();
 292                     client.Parameters.Add("format", "json");
 293                     client.IfModifiedSince = since;
 294
 295                     //Extract the username from the base address
 296                     client.BaseAddress = RootAddressUri.AbsoluteUri;
 297
 298                     var content = client.DownloadStringWithRetry(@"", 3);
 299
 300                     client.AssertStatusOK("ListSharingAccounts failed");
 301
 302                     //If the result is empty, return an empty list,
 303                     var infos = String.IsNullOrWhiteSpace(content)
 304                                     ? new List<ShareAccountInfo>()
 305                                 //Otherwise deserialize the account list into a list of ShareAccountInfos
 306                                     : JsonConvert.DeserializeObject<IList<ShareAccountInfo>>(content);
 307
 308                     Log.DebugFormat("END");
 309                     return infos;
 310                 }
 311             }
 312         }
 313
 314         //Request listing of all objects in a container modified since a specific time.
 315         //If the *since* value is missing, return all objects
 316         public IList<ObjectInfo> ListSharedObjects(DateTime? since = null)
 317         {
 318
 319             using (ThreadContext.Stacks["Share"].Push("List Objects"))
 320             {
 321                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 322                 //'since' is not used here because we need to have ListObjects return a NoChange result
 323                 //for all shared accounts,containers
 324                 var accounts = ListSharingAccounts();
 325                 var items = from account in accounts
 326                             let containers = ListContainers(account.name)
 327                             from container in containers
 328                             select ListObjects(account.name, container.Name,since);
 329                 var objects=items.SelectMany(r=> r).ToList();
 330 /*
 331                 var objects = new List<ObjectInfo>();
 332                 foreach (var containerObjects in items)
 333                 {
 334                     objects.AddRange(containerObjects);
 335                 }
 336 */
 337                 if (Log.IsDebugEnabled) Log.DebugFormat("END");
 338                 return objects;
 339             }
 340         }
 341
 342         public void SetTags(ObjectInfo target,IDictionary<string,string> tags)
 343         {
 344             if (String.IsNullOrWhiteSpace(Token))
 345                 throw new InvalidOperationException("The Token is not set");
 346             if (StorageUrl == null)
 347                 throw new InvalidOperationException("The StorageUrl is not set");
 348             if (target == null)
 349                 throw new ArgumentNullException("target");
 350             Contract.EndContractBlock();
 351
 352             using (ThreadContext.Stacks["Share"].Push("Share Object"))
 353             {
 354                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 355
 356                 using (var client = new RestClient(_baseClient))
 357                 {
 358
 359                     client.BaseAddress = GetAccountUrl(target.Account);
 360
 361                     client.Parameters.Clear();
 362                     client.Parameters.Add("update", "");
 363
 364                     foreach (var tag in tags)
 365                     {
 366                         var headerTag = String.Format("X-Object-Meta-{0}", tag.Key);
 367                         client.Headers.Add(headerTag, tag.Value);
 368                     }
 369
 370                     client.DownloadStringWithRetry(target.Container, 3);
 371
 372
 373                     client.AssertStatusOK("SetTags failed");
 374                     //If the status is NOT ACCEPTED we have a problem
 375                     if (client.StatusCode != HttpStatusCode.Accepted)
 376                     {
 377                         Log.Error("Failed to set tags");
 378                         throw new Exception("Failed to set tags");
 379                     }
 380
 381                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 382                 }
 383             }
 384
 385
 386         }
 387
 388         public void ShareObject(string account, string container, string objectName, string shareTo, bool read, bool write)
 389         {
 390             if (String.IsNullOrWhiteSpace(Token))
 391                 throw new InvalidOperationException("The Token is not set");
 392             if (StorageUrl==null)
 393                 throw new InvalidOperationException("The StorageUrl is not set");
 394             if (String.IsNullOrWhiteSpace(container))
 395                 throw new ArgumentNullException("container");
 396             if (String.IsNullOrWhiteSpace(objectName))
 397                 throw new ArgumentNullException("objectName");
 398             if (String.IsNullOrWhiteSpace(account))
 399                 throw new ArgumentNullException("account");
 400             if (String.IsNullOrWhiteSpace(shareTo))
 401                 throw new ArgumentNullException("shareTo");
 402             Contract.EndContractBlock();
 403
 404             using (ThreadContext.Stacks["Share"].Push("Share Object"))
 405             {
 406                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 407
 408                 using (var client = new RestClient(_baseClient))
 409                 {
 410
 411                     client.BaseAddress = GetAccountUrl(account);
 412
 413                     client.Parameters.Clear();
 414                     client.Parameters.Add("format", "json");
 415
 416                     string permission = "";
 417                     if (write)
 418                         permission = String.Format("write={0}", shareTo);
 419                     else if (read)
 420                         permission = String.Format("read={0}", shareTo);
 421                     client.Headers.Add("X-Object-Sharing", permission);
 422
 423                     var content = client.DownloadStringWithRetry(container, 3);
 424
 425                     client.AssertStatusOK("ShareObject failed");
 426
 427                     //If the result is empty, return an empty list,
 428                     var infos = String.IsNullOrWhiteSpace(content)
 429                                     ? new List<ObjectInfo>()
 430                                 //Otherwise deserialize the object list into a list of ObjectInfos
 431                                     : JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 432
 433                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 434                 }
 435             }
 436
 437
 438         }
 439
 440         public AccountInfo GetAccountPolicies(AccountInfo accountInfo)
 441         {
 442             if (accountInfo==null)
 443                 throw new ArgumentNullException("accountInfo");
 444             Contract.EndContractBlock();
 445
 446             using (ThreadContext.Stacks["Account"].Push("GetPolicies"))
 447             {
 448                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 449
 450                 using (var client = new RestClient(_baseClient))
 451                 {
 452                     if (!String.IsNullOrWhiteSpace(accountInfo.UserName))
 453                         client.BaseAddress = GetAccountUrl(accountInfo.UserName);
 454
 455                     client.Parameters.Clear();
 456                     client.Parameters.Add("format", "json");
 457                     client.Head(String.Empty, 3);
 458
 459                     var quotaValue=client.ResponseHeaders["X-Account-Policy-Quota"];
 460                     var bytesValue= client.ResponseHeaders["X-Account-Bytes-Used"];
 461
 462                     long quota, bytes;
 463                     if (long.TryParse(quotaValue, out quota))
 464                         accountInfo.Quota = quota;
 465                     if (long.TryParse(bytesValue, out bytes))
 466                         accountInfo.BytesUsed = bytes;
 467
 468                     return accountInfo;
 469
 470                 }
 471
 472             }
 473         }
 474
 475         public void UpdateMetadata(ObjectInfo objectInfo)
 476         {
 477             if (objectInfo == null)
 478                 throw new ArgumentNullException("objectInfo");
 479             Contract.EndContractBlock();
 480
 481             using (ThreadContext.Stacks["Objects"].Push("UpdateMetadata"))
 482             {
 483                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 484
 485
 486                 using(var client=new RestClient(_baseClient))
 487                 {
 488
 489                     client.BaseAddress = GetAccountUrl(objectInfo.Account);
 490
 491                     client.Parameters.Clear();
 492
 493
 494                     //Set Tags
 495                     foreach (var tag in objectInfo.Tags)
 496                     {
 497                         var headerTag = String.Format("X-Object-Meta-{0}", tag.Key);
 498                         client.Headers.Add(headerTag, tag.Value);
 499                     }
 500
 501                     //Set Permissions
 502
 503                     var permissions=objectInfo.GetPermissionString();
 504                     client.SetNonEmptyHeaderValue("X-Object-Sharing",permissions);
 505
 506                     client.SetNonEmptyHeaderValue("Content-Disposition",objectInfo.ContendDisposition);
 507                     client.SetNonEmptyHeaderValue("Content-Encoding",objectInfo.ContentEncoding);
 508                     client.SetNonEmptyHeaderValue("X-Object-Manifest",objectInfo.Manifest);
 509                     var isPublic = objectInfo.IsPublic.ToString().ToLower();
 510                     client.Headers.Add("X-Object-Public", isPublic);
 511
 512
 513                     var uriBuilder = client.GetAddressBuilder(objectInfo.Container, objectInfo.Name);
 514                     var uri = uriBuilder.Uri;
 515
 516                     client.UploadValues(uri,new NameValueCollection());
 517
 518
 519                     client.AssertStatusOK("UpdateMetadata failed");
 520                     //If the status is NOT ACCEPTED or OK we have a problem
 521                     if (!(client.StatusCode == HttpStatusCode.Accepted || client.StatusCode == HttpStatusCode.OK))
 522                     {
 523                         Log.Error("Failed to update metadata");
 524                         throw new Exception("Failed to update metadata");
 525                     }
 526
 527                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 528                 }
 529             }
 530
 531         }
 532
 533         public void UpdateMetadata(ContainerInfo containerInfo)
 534         {
 535             if (containerInfo == null)
 536                 throw new ArgumentNullException("containerInfo");
 537             Contract.EndContractBlock();
 538
 539             using (ThreadContext.Stacks["Containers"].Push("UpdateMetadata"))
 540             {
 541                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 542
 543
 544                 using(var client=new RestClient(_baseClient))
 545                 {
 546
 547                     client.BaseAddress = GetAccountUrl(containerInfo.Account);
 548
 549                     client.Parameters.Clear();
 550
 551
 552                     //Set Tags
 553                     foreach (var tag in containerInfo.Tags)
 554                     {
 555                         var headerTag = String.Format("X-Container-Meta-{0}", tag.Key);
 556                         client.Headers.Add(headerTag, tag.Value);
 557                     }
 558
 559
 560                     //Set Policies
 561                     foreach (var policy in containerInfo.Policies)
 562                     {
 563                         var headerPolicy = String.Format("X-Container-Policy-{0}", policy.Key);
 564                         client.Headers.Add(headerPolicy, policy.Value);
 565                     }
 566
 567
 568                     var uriBuilder = client.GetAddressBuilder(containerInfo.Name,"");
 569                     var uri = uriBuilder.Uri;
 570
 571                     client.UploadValues(uri,new NameValueCollection());
 572
 573
 574                     client.AssertStatusOK("UpdateMetadata failed");
 575                     //If the status is NOT ACCEPTED or OK we have a problem
 576                     if (!(client.StatusCode == HttpStatusCode.Accepted || client.StatusCode == HttpStatusCode.OK))
 577                     {
 578                         Log.Error("Failed to update metadata");
 579                         throw new Exception("Failed to update metadata");
 580                     }
 581
 582                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 583                 }
 584             }
 585
 586         }
 587
 588
 589         public IList<ObjectInfo> ListObjects(string account, string container, DateTime? since = null)
 590         {
 591             if (String.IsNullOrWhiteSpace(container))
 592                 throw new ArgumentNullException("container");
 593             Contract.EndContractBlock();
 594
 595             using (ThreadContext.Stacks["Objects"].Push("List"))
 596             {
 597                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 598
 599                 using (var client = new RestClient(_baseClient))
 600                 {
 601                     if (!String.IsNullOrWhiteSpace(account))
 602                         client.BaseAddress = GetAccountUrl(account);
 603
 604                     client.Parameters.Clear();
 605                     client.Parameters.Add("format", "json");
 606                     client.IfModifiedSince = since;
 607                     var content = client.DownloadStringWithRetry(container, 3);
 608
 609                     client.AssertStatusOK("ListObjects failed");
 610
 611                     if (client.StatusCode==HttpStatusCode.NotModified)
 612                         return new[]{new NoModificationInfo(account,container)};
 613                     //If the result is empty, return an empty list,
 614                     var infos = String.IsNullOrWhiteSpace(content)
 615                                     ? new List<ObjectInfo>()
 616                                 //Otherwise deserialize the object list into a list of ObjectInfos
 617                                     : JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 618
 619                     foreach (var info in infos)
 620                     {
 621                         info.Container = container;
 622                         info.Account = account;
 623                         info.StorageUri = this.StorageUrl;
 624                     }
 625                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 626                     return infos;
 627                 }
 628             }
 629         }
 630
 631         public IList<ObjectInfo> ListObjects(string account, string container, string folder, DateTime? since = null)
 632         {
 633             if (String.IsNullOrWhiteSpace(container))
 634                 throw new ArgumentNullException("container");
 635 /*
 636             if (String.IsNullOrWhiteSpace(folder))
 637                 throw new ArgumentNullException("folder");
 638 */
 639             Contract.EndContractBlock();
 640
 641             using (ThreadContext.Stacks["Objects"].Push("List"))
 642             {
 643                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 644
 645                 using (var client = new RestClient(_baseClient))
 646                 {
 647                     if (!String.IsNullOrWhiteSpace(account))
 648                         client.BaseAddress = GetAccountUrl(account);
 649
 650                     client.Parameters.Clear();
 651                     client.Parameters.Add("format", "json");
 652                     client.Parameters.Add("path", folder);
 653                     client.IfModifiedSince = since;
 654                     var content = client.DownloadStringWithRetry(container, 3);
 655                     client.AssertStatusOK("ListObjects failed");
 656
 657                     if (client.StatusCode==HttpStatusCode.NotModified)
 658                         return new[]{new NoModificationInfo(account,container,folder)};
 659
 660                     var infos = JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 661                     foreach (var info in infos)
 662                     {
 663                         info.Account = account;
 664                         if (info.Container == null)
 665                             info.Container = container;
 666                         info.StorageUri = this.StorageUrl;
 667                     }
 668                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 669                     return infos;
 670                 }
 671             }
 672         }
 673
 674
 675         public bool ContainerExists(string account, string container)
 676         {
 677             if (String.IsNullOrWhiteSpace(container))
 678                 throw new ArgumentNullException("container", "The container property can't be empty");
 679             Contract.EndContractBlock();
 680
 681             using (ThreadContext.Stacks["Containters"].Push("Exists"))
 682             {
 683                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 684
 685                 using (var client = new RestClient(_baseClient))
 686                 {
 687                     if (!String.IsNullOrWhiteSpace(account))
 688                         client.BaseAddress = GetAccountUrl(account);
 689
 690                     client.Parameters.Clear();
 691                     client.Head(container, 3);
 692
 693                     bool result;
 694                     switch (client.StatusCode)
 695                     {
 696                         case HttpStatusCode.OK:
 697                         case HttpStatusCode.NoContent:
 698                             result=true;
 699                             break;
 700                         case HttpStatusCode.NotFound:
 701                             result=false;
 702                             break;
 703                         default:
 704                             throw CreateWebException("ContainerExists", client.StatusCode);
 705                     }
 706                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 707
 708                     return result;
 709                 }
 710
 711             }
 712         }
 713
 714         public bool ObjectExists(string account, string container, string objectName)
 715         {
 716             if (String.IsNullOrWhiteSpace(container))
 717                 throw new ArgumentNullException("container", "The container property can't be empty");
 718             if (String.IsNullOrWhiteSpace(objectName))
 719                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 720             Contract.EndContractBlock();
 721
 722             using (var client = new RestClient(_baseClient))
 723             {
 724                 if (!String.IsNullOrWhiteSpace(account))
 725                     client.BaseAddress = GetAccountUrl(account);
 726
 727                 client.Parameters.Clear();
 728                 client.Head(container + "/" + objectName, 3);
 729
 730                 switch (client.StatusCode)
 731                 {
 732                     case HttpStatusCode.OK:
 733                     case HttpStatusCode.NoContent:
 734                         return true;
 735                     case HttpStatusCode.NotFound:
 736                         return false;
 737                     default:
 738                         throw CreateWebException("ObjectExists", client.StatusCode);
 739                 }
 740             }
 741
 742         }
 743
 744         public ObjectInfo GetObjectInfo(string account, string container, string objectName)
 745         {
 746             if (String.IsNullOrWhiteSpace(container))
 747                 throw new ArgumentNullException("container", "The container property can't be empty");
 748             if (String.IsNullOrWhiteSpace(objectName))
 749                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 750             Contract.EndContractBlock();
 751
 752             using (ThreadContext.Stacks["Objects"].Push("GetObjectInfo"))
 753             {
 754
 755                 using (var client = new RestClient(_baseClient))
 756                 {
 757                     if (!String.IsNullOrWhiteSpace(account))
 758                         client.BaseAddress = GetAccountUrl(account);
 759                     try
 760                     {
 761                         client.Parameters.Clear();
 762
 763                         client.Head(container + "/" + objectName, 3);
 764
 765                         if (client.TimedOut)
 766                             return ObjectInfo.Empty;
 767
 768                         switch (client.StatusCode)
 769                         {
 770                             case HttpStatusCode.OK:
 771                             case HttpStatusCode.NoContent:
 772                                 var keys = client.ResponseHeaders.AllKeys.AsQueryable();
 773                                 var tags = client.GetMeta("X-Object-Meta-");
 774                                 var extensions = (from key in keys
 775                                                   where key.StartsWith("X-Object-") && !key.StartsWith("X-Object-Meta-")
 776                                                   select new {Name = key, Value = client.ResponseHeaders[key]})
 777                                     .ToDictionary(t => t.Name, t => t.Value);
 778
 779                                 var permissions=client.GetHeaderValue("X-Object-Sharing", true);
 780
 781
 782                                 var info = new ObjectInfo
 783                                                {
 784                                                    Account = account,
 785                                                    Container = container,
 786                                                    Name = objectName,
 787                                                    Hash = client.GetHeaderValue("ETag"),
 788                                                    Content_Type = client.GetHeaderValue("Content-Type"),
 789                                                    Bytes = Convert.ToInt64(client.GetHeaderValue("Content-Length",true)),
 790                                                    Tags = tags,
 791                                                    Last_Modified = client.LastModified,
 792                                                    Extensions = extensions,
 793                                                    ContentEncoding=client.GetHeaderValue("Content-Encoding",true),
 794                                                    ContendDisposition = client.GetHeaderValue("Content-Disposition",true),
 795                                                    Manifest=client.GetHeaderValue("X-Object-Manifest",true),
 796                                                    PublicUrl=client.GetHeaderValue("X-Object-Public",true),
 797                                                };
 798                                 info.SetPermissions(permissions);
 799                                 return info;
 800                             case HttpStatusCode.NotFound:
 801                                 return ObjectInfo.Empty;
 802                             default:
 803                                 throw new WebException(
 804                                     String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}",
 805                                                   objectName, client.StatusCode));
 806                         }
 807
 808                     }
 809                     catch (RetryException)
 810                     {
 811                         Log.WarnFormat("[RETRY FAIL] GetObjectInfo for {0} failed.",objectName);
 812                         return ObjectInfo.Empty;
 813                     }
 814                     catch (WebException e)
 815                     {
 816                         Log.Error(
 817                             String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}",
 818                                           objectName, client.StatusCode), e);
 819                         throw;
 820                     }
 821                 }
 822             }
 823
 824         }
 825
 826         public void CreateFolder(string account, string container, string folder)
 827         {
 828             if (String.IsNullOrWhiteSpace(container))
 829                 throw new ArgumentNullException("container", "The container property can't be empty");
 830             if (String.IsNullOrWhiteSpace(folder))
 831                 throw new ArgumentNullException("folder", "The folder property can't be empty");
 832             Contract.EndContractBlock();
 833
 834             var folderUrl=String.Format("{0}/{1}",container,folder);
 835             using (var client = new RestClient(_baseClient))
 836             {
 837                 if (!String.IsNullOrWhiteSpace(account))
 838                     client.BaseAddress = GetAccountUrl(account);
 839
 840                 client.Parameters.Clear();
 841                 client.Headers.Add("Content-Type", @"application/directory");
 842                 client.Headers.Add("Content-Length", "0");
 843                 client.PutWithRetry(folderUrl, 3);
 844
 845                 if (client.StatusCode != HttpStatusCode.Created && client.StatusCode != HttpStatusCode.Accepted)
 846                     throw CreateWebException("CreateFolder", client.StatusCode);
 847             }
 848         }
 849
 850
 851
 852         public ContainerInfo GetContainerInfo(string account, string container)
 853         {
 854             if (String.IsNullOrWhiteSpace(container))
 855                 throw new ArgumentNullException("container", "The container property can't be empty");
 856             Contract.EndContractBlock();
 857
 858             using (var client = new RestClient(_baseClient))
 859             {
 860                 if (!String.IsNullOrWhiteSpace(account))
 861                     client.BaseAddress = GetAccountUrl(account);
 862
 863                 client.Head(container);
 864                 switch (client.StatusCode)
 865                 {
 866                     case HttpStatusCode.OK:
 867                     case HttpStatusCode.NoContent:
 868                         var tags = client.GetMeta("X-Container-Meta-");
 869                         var policies = client.GetMeta("X-Container-Policy-");
 870
 871                         var containerInfo = new ContainerInfo
 872                                                 {
 873                                                     Account=account,
 874                                                     Name = container,
 875                                                     StorageUrl=this.StorageUrl.ToString(),
 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             if (Log.IsDebugEnabled)
1040                 Log.DebugFormat("Hashes:\r\n{0}", jsonHash);
1041             return uploadTask.ContinueWith(t =>
1042             {
1043
1044                 var empty = (IList<string>)new List<string>();
1045
1046
1047                 //The server will respond either with 201-created if all blocks were already on the server
1048                 if (client.StatusCode == HttpStatusCode.Created)
1049                 {
1050                     //in which case we return an empty hash list
1051                     return empty;
1052                 }
1053                 //or with a 409-conflict and return the list of missing parts
1054                 //A 409 will cause an exception so we need to check t.IsFaulted to avoid propagating the exception
1055                 if (t.IsFaulted)
1056                 {
1057                     var ex = t.Exception.InnerException;
1058                     var we = ex as WebException;
1059                     var response = we.Response as HttpWebResponse;
1060                     if (response!=null && response.StatusCode==HttpStatusCode.Conflict)
1061                     {
1062                         //In case of 409 the missing parts will be in the response content
1063                         using (var stream = response.GetResponseStream())
1064                         using(var reader=stream.GetLoggedReader(Log))
1065                         {
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                             serializer.Error += (sender, args) => Log.ErrorFormat("Deserialization error at [{0}] [{1}]", args.ErrorContext.Error, args.ErrorContext.Member);
1074                             var hashes = (List<string>)serializer.Deserialize(reader, typeof(List<string>));
1075                             return hashes;
1076                         }
1077                     }
1078                     //Any other status code is unexpected and the exception should be rethrown
1079                     Log.LogError(response);
1080                     throw ex;
1081
1082                 }
1083
1084                 //Any other status code is unexpected but there was no exception. We can probably continue processing
1085                 Log.WarnFormat("Unexcpected status code when putting map: {0} - {1}",client.StatusCode,client.StatusDescription);
1086
1087                 return empty;
1088             });
1089
1090         }
1091
1092
1093         public Task<byte[]> GetBlock(string account, string container, Uri relativeUrl, long start, long? end)
1094         {
1095             if (String.IsNullOrWhiteSpace(Token))
1096                 throw new InvalidOperationException("Invalid Token");
1097             if (StorageUrl == null)
1098                 throw new InvalidOperationException("Invalid Storage Url");
1099             if (String.IsNullOrWhiteSpace(container))
1100                 throw new ArgumentNullException("container");
1101             if (relativeUrl== null)
1102                 throw new ArgumentNullException("relativeUrl");
1103             if (end.HasValue && end<0)
1104                 throw new ArgumentOutOfRangeException("end");
1105             if (start<0)
1106                 throw new ArgumentOutOfRangeException("start");
1107             Contract.EndContractBlock();
1108
1109
1110             //Don't use a timeout because putting the hashmap may be a long process
1111             var client = new RestClient(_baseClient) {Timeout = 0, RangeFrom = start, RangeTo = end};
1112             if (!String.IsNullOrWhiteSpace(account))
1113                 client.BaseAddress = GetAccountUrl(account);
1114
1115             var builder = client.GetAddressBuilder(container, relativeUrl.ToString());
1116             var uri = builder.Uri;
1117
1118             return client.DownloadDataTask(uri)
1119                 .ContinueWith(t=>
1120                                   {
1121                                       client.Dispose();
1122                                       return t.Result;
1123                                   });
1124         }
1125
1126
1127         public async Task PostBlock(string account, string container, byte[] block, int offset, int count)
1128         {
1129             if (String.IsNullOrWhiteSpace(container))
1130                 throw new ArgumentNullException("container");
1131             if (block == null)
1132                 throw new ArgumentNullException("block");
1133             if (offset < 0 || offset >= block.Length)
1134                 throw new ArgumentOutOfRangeException("offset");
1135             if (count < 0 || count > block.Length)
1136                 throw new ArgumentOutOfRangeException("count");
1137             if (String.IsNullOrWhiteSpace(Token))
1138                 throw new InvalidOperationException("Invalid Token");
1139             if (StorageUrl == null)
1140                 throw new InvalidOperationException("Invalid Storage Url");
1141             Contract.EndContractBlock();
1142
1143
1144             try
1145             {
1146
1147             //Don't use a timeout because putting the hashmap may be a long process
1148                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1149                 {
1150                     if (!String.IsNullOrWhiteSpace(account))
1151                         client.BaseAddress = GetAccountUrl(account);
1152
1153                     var builder = client.GetAddressBuilder(container, "");
1154                     //We are doing an update
1155                     builder.Query = "update";
1156                     var uri = builder.Uri;
1157
1158                     client.Headers[HttpRequestHeader.ContentType] = "application/octet-stream";
1159
1160                     Log.InfoFormat("[BLOCK POST] START");
1161
1162                     client.UploadProgressChanged += (sender, args) =>
1163                                                     Log.InfoFormat("[BLOCK POST PROGRESS] {0}% {1} of {2}",
1164                                                                    args.ProgressPercentage, args.BytesSent,
1165                                                                    args.TotalBytesToSend);
1166                     client.UploadFileCompleted += (sender, args) =>
1167                                                   Log.InfoFormat("[BLOCK POST PROGRESS] Completed ");
1168
1169                     var buffer = new byte[count];
1170                     Buffer.BlockCopy(block, offset, buffer, 0, count);
1171                     //Send the block
1172                     await client.UploadDataTask(uri, "POST", buffer);
1173                     Log.InfoFormat("[BLOCK POST] END");
1174                 }
1175             }
1176             catch (Exception exc)
1177             {
1178                 Log.ErrorFormat("[BLOCK POST] FAIL with \r{0}", exc);
1179                 throw;
1180             }
1181         }
1182
1183
1184         public async Task<TreeHash> GetHashMap(string account, string container, string objectName)
1185         {
1186             if (String.IsNullOrWhiteSpace(container))
1187                 throw new ArgumentNullException("container");
1188             if (String.IsNullOrWhiteSpace(objectName))
1189                 throw new ArgumentNullException("objectName");
1190             if (String.IsNullOrWhiteSpace(Token))
1191                 throw new InvalidOperationException("Invalid Token");
1192             if (StorageUrl == null)
1193                 throw new InvalidOperationException("Invalid Storage Url");
1194             Contract.EndContractBlock();
1195
1196             try
1197             {
1198                 //WebClient, and by extension RestClient, are not thread-safe. Create a new RestClient
1199                 //object to avoid concurrency errors.
1200                 //
1201                 //Download operations take a long time therefore they have no timeout.
1202                 //TODO: Do they really? this is a hashmap operation, not a download
1203
1204                 //Start downloading the object asynchronously
1205                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1206                 {
1207                     if (!String.IsNullOrWhiteSpace(account))
1208                         client.BaseAddress = GetAccountUrl(account);
1209
1210                     //The container and objectName are relative names. They are joined with the client's
1211                     //BaseAddress to create the object's absolute address
1212                     var builder = client.GetAddressBuilder(container, objectName);
1213                     builder.Query = "format=json&hashmap";
1214                     var uri = builder.Uri;
1215
1216
1217                     var json = await client.DownloadStringTaskAsync(uri);
1218                     var treeHash = TreeHash.Parse(json);
1219                     Log.InfoFormat("[GET HASH] END {0}", objectName);
1220                     return treeHash;
1221                 }
1222             }
1223             catch (Exception exc)
1224             {
1225                 Log.ErrorFormat("[GET HASH] END {0} with {1}", objectName, exc);
1226                 throw;
1227             }
1228
1229         }
1230
1231
1232         /// <summary>
1233         ///
1234         /// </summary>
1235         /// <param name="account"></param>
1236         /// <param name="container"></param>
1237         /// <param name="objectName"></param>
1238         /// <param name="fileName"></param>
1239         /// <param name="hash">Optional hash value for the file. If no hash is provided, the method calculates a new hash</param>
1240         /// <remarks>>This method should have no timeout or a very long one</remarks>
1241         public async Task PutObject(string account, string container, string objectName, string fileName, string hash = null, string contentType = "application/octet-stream")
1242         {
1243             if (String.IsNullOrWhiteSpace(container))
1244                 throw new ArgumentNullException("container", "The container property can't be empty");
1245             if (String.IsNullOrWhiteSpace(objectName))
1246                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
1247             if (String.IsNullOrWhiteSpace(fileName))
1248                 throw new ArgumentNullException("fileName", "The fileName property can't be empty");
1249 /*
1250             if (!File.Exists(fileName) && !Directory.Exists(fileName))
1251                 throw new FileNotFoundException("The file or directory does not exist",fileName);
1252 */
1253
1254             try
1255             {
1256
1257                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1258                 {
1259                     if (!String.IsNullOrWhiteSpace(account))
1260                         client.BaseAddress = GetAccountUrl(account);
1261
1262                     var builder = client.GetAddressBuilder(container, objectName);
1263                     var uri = builder.Uri;
1264
1265                     string etag = hash ?? CalculateHash(fileName);
1266
1267                     client.Headers.Add("Content-Type", contentType);
1268                     client.Headers.Add("ETag", etag);
1269
1270
1271                     Log.InfoFormat("[PUT] START {0}", objectName);
1272                     client.UploadProgressChanged += (sender, args) =>
1273                                                         {
1274                                                             using (ThreadContext.Stacks["PUT"].Push("Progress"))
1275                                                             {
1276                                                                 Log.InfoFormat("{0} {1}% {2} of {3}", fileName,
1277                                                                                args.ProgressPercentage,
1278                                                                                args.BytesSent, args.TotalBytesToSend);
1279                                                             }
1280                                                         };
1281
1282                     client.UploadFileCompleted += (sender, args) =>
1283                                                       {
1284                                                           using (ThreadContext.Stacks["PUT"].Push("Progress"))
1285                                                           {
1286                                                               Log.InfoFormat("Completed {0}", fileName);
1287                                                           }
1288                                                       };
1289                     if (contentType=="application/directory")
1290                         await client.UploadDataTaskAsync(uri, "PUT", new byte[0]);
1291                     else
1292                         await client.UploadFileTaskAsync(uri, "PUT", fileName);
1293                 }
1294
1295                 Log.InfoFormat("[PUT] END {0}", objectName);
1296             }
1297             catch (Exception exc)
1298             {
1299                 Log.ErrorFormat("[PUT] END {0} with {1}", objectName, exc);
1300                 throw;
1301             }
1302
1303         }
1304
1305
1306         private static string CalculateHash(string fileName)
1307         {
1308             Contract.Requires(!String.IsNullOrWhiteSpace(fileName));
1309             Contract.EndContractBlock();
1310
1311             string hash;
1312             using (var hasher = MD5.Create())
1313             using(var stream=File.OpenRead(fileName))
1314             {
1315                 var hashBuilder=new StringBuilder();
1316                 foreach (byte b in hasher.ComputeHash(stream))
1317                     hashBuilder.Append(b.ToString("x2").ToLower());
1318                 hash = hashBuilder.ToString();
1319             }
1320             return hash;
1321         }
1322
1323         public void MoveObject(string account, string sourceContainer, string oldObjectName, string targetContainer, string newObjectName)
1324         {
1325             if (String.IsNullOrWhiteSpace(sourceContainer))
1326                 throw new ArgumentNullException("sourceContainer", "The container property can't be empty");
1327             if (String.IsNullOrWhiteSpace(oldObjectName))
1328                 throw new ArgumentNullException("oldObjectName", "The oldObjectName property can't be empty");
1329             if (String.IsNullOrWhiteSpace(targetContainer))
1330                 throw new ArgumentNullException("targetContainer", "The container property can't be empty");
1331             if (String.IsNullOrWhiteSpace(newObjectName))
1332                 throw new ArgumentNullException("newObjectName", "The newObjectName property can't be empty");
1333             Contract.EndContractBlock();
1334
1335             var targetUrl = targetContainer + "/" + newObjectName;
1336             var sourceUrl = String.Format("/{0}/{1}", sourceContainer, oldObjectName);
1337
1338             using (var client = new RestClient(_baseClient))
1339             {
1340                 if (!String.IsNullOrWhiteSpace(account))
1341                     client.BaseAddress = GetAccountUrl(account);
1342
1343                 client.Headers.Add("X-Move-From", sourceUrl);
1344                 client.PutWithRetry(targetUrl, 3);
1345
1346                 var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created};
1347                 if (!expectedCodes.Contains(client.StatusCode))
1348                     throw CreateWebException("MoveObject", client.StatusCode);
1349             }
1350         }
1351
1352         public void DeleteObject(string account, string sourceContainer, string objectName)
1353         {
1354             if (String.IsNullOrWhiteSpace(sourceContainer))
1355                 throw new ArgumentNullException("sourceContainer", "The container property can't be empty");
1356             if (String.IsNullOrWhiteSpace(objectName))
1357                 throw new ArgumentNullException("objectName", "The oldObjectName property can't be empty");
1358             Contract.EndContractBlock();
1359
1360             var targetUrl = FolderConstants.TrashContainer + "/" + objectName;
1361             var sourceUrl = String.Format("/{0}/{1}", sourceContainer, objectName);
1362
1363             using (var client = new RestClient(_baseClient))
1364             {
1365                 if (!String.IsNullOrWhiteSpace(account))
1366                     client.BaseAddress = GetAccountUrl(account);
1367
1368                 client.Headers.Add("X-Move-From", sourceUrl);
1369                 client.AllowedStatusCodes.Add(HttpStatusCode.NotFound);
1370                 Log.InfoFormat("[TRASH] [{0}] to [{1}]",sourceUrl,targetUrl);
1371                 client.PutWithRetry(targetUrl, 3);
1372
1373                 var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created,HttpStatusCode.NotFound};
1374                 if (!expectedCodes.Contains(client.StatusCode))
1375                     throw CreateWebException("DeleteObject", client.StatusCode);
1376             }
1377         }
1378
1379
1380         private static WebException CreateWebException(string operation, HttpStatusCode statusCode)
1381         {
1382             return new WebException(String.Format("{0} failed with unexpected status code {1}", operation, statusCode));
1383         }
1384
1385
1386 /*
1387         public IEnumerable<ObjectInfo> ListDirectories(ContainerInfo container)
1388         {
1389             var directories=this.ListObjects(container.Account, container.Name, "/");
1390         }
1391 */
1392     }
1393
1394     public class ShareAccountInfo
1395     {
1396         public DateTime? last_modified { get; set; }
1397         public string name { get; set; }
1398     }
1399 }