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;
  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             Debug.Assert(_baseClient!=null);
 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                     uriBuilder.Query = "update=";
 516                     var uri = uriBuilder.Uri.MakeRelativeUri(this.RootAddressUri);*/
 517                     var address = String.Format("{0}/{1}?update=",objectInfo.Container, objectInfo.Name);
 518                     client.PostWithRetry(address,"application/xml");
 519
 520                     //client.UploadValues(uri,new NameValueCollection());
 521
 522
 523                     client.AssertStatusOK("UpdateMetadata failed");
 524                     //If the status is NOT ACCEPTED or OK we have a problem
 525                     if (!(client.StatusCode == HttpStatusCode.Accepted || client.StatusCode == HttpStatusCode.OK))
 526                     {
 527                         Log.Error("Failed to update metadata");
 528                         throw new Exception("Failed to update metadata");
 529                     }
 530
 531                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 532                 }
 533             }
 534
 535         }
 536
 537         public void UpdateMetadata(ContainerInfo containerInfo)
 538         {
 539             if (containerInfo == null)
 540                 throw new ArgumentNullException("containerInfo");
 541             Contract.EndContractBlock();
 542
 543             using (ThreadContext.Stacks["Containers"].Push("UpdateMetadata"))
 544             {
 545                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 546
 547
 548                 using(var client=new RestClient(_baseClient))
 549                 {
 550
 551                     client.BaseAddress = GetAccountUrl(containerInfo.Account);
 552
 553                     client.Parameters.Clear();
 554
 555
 556                     //Set Tags
 557                     foreach (var tag in containerInfo.Tags)
 558                     {
 559                         var headerTag = String.Format("X-Container-Meta-{0}", tag.Key);
 560                         client.Headers.Add(headerTag, tag.Value);
 561                     }
 562
 563
 564                     //Set Policies
 565                     foreach (var policy in containerInfo.Policies)
 566                     {
 567                         var headerPolicy = String.Format("X-Container-Policy-{0}", policy.Key);
 568                         client.Headers.Add(headerPolicy, policy.Value);
 569                     }
 570
 571
 572                     var uriBuilder = client.GetAddressBuilder(containerInfo.Name,"");
 573                     var uri = uriBuilder.Uri;
 574
 575                     client.UploadValues(uri,new NameValueCollection());
 576
 577
 578                     client.AssertStatusOK("UpdateMetadata failed");
 579                     //If the status is NOT ACCEPTED or OK we have a problem
 580                     if (!(client.StatusCode == HttpStatusCode.Accepted || client.StatusCode == HttpStatusCode.OK))
 581                     {
 582                         Log.Error("Failed to update metadata");
 583                         throw new Exception("Failed to update metadata");
 584                     }
 585
 586                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 587                 }
 588             }
 589
 590         }
 591
 592
 593         public IList<ObjectInfo> ListObjects(string account, string container, DateTime? since = null)
 594         {
 595             if (String.IsNullOrWhiteSpace(container))
 596                 throw new ArgumentNullException("container");
 597             Contract.EndContractBlock();
 598
 599             using (ThreadContext.Stacks["Objects"].Push("List"))
 600             {
 601                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 602
 603                 using (var client = new RestClient(_baseClient))
 604                 {
 605                     if (!String.IsNullOrWhiteSpace(account))
 606                         client.BaseAddress = GetAccountUrl(account);
 607
 608                     client.Parameters.Clear();
 609                     client.Parameters.Add("format", "json");
 610                     client.IfModifiedSince = since;
 611                     var content = client.DownloadStringWithRetry(container, 3);
 612
 613                     client.AssertStatusOK("ListObjects failed");
 614
 615                     if (client.StatusCode==HttpStatusCode.NotModified)
 616                         return new[]{new NoModificationInfo(account,container)};
 617                     //If the result is empty, return an empty list,
 618                     var infos = String.IsNullOrWhiteSpace(content)
 619                                     ? new List<ObjectInfo>()
 620                                 //Otherwise deserialize the object list into a list of ObjectInfos
 621                                     : JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 622
 623                     foreach (var info in infos)
 624                     {
 625                         info.Container = container;
 626                         info.Account = account;
 627                         info.StorageUri = this.StorageUrl;
 628                     }
 629                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 630                     return infos;
 631                 }
 632             }
 633         }
 634
 635         public IList<ObjectInfo> ListObjects(string account, string container, string folder, DateTime? since = null)
 636         {
 637             if (String.IsNullOrWhiteSpace(container))
 638                 throw new ArgumentNullException("container");
 639 /*
 640             if (String.IsNullOrWhiteSpace(folder))
 641                 throw new ArgumentNullException("folder");
 642 */
 643             Contract.EndContractBlock();
 644
 645             using (ThreadContext.Stacks["Objects"].Push("List"))
 646             {
 647                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 648
 649                 using (var client = new RestClient(_baseClient))
 650                 {
 651                     if (!String.IsNullOrWhiteSpace(account))
 652                         client.BaseAddress = GetAccountUrl(account);
 653
 654                     client.Parameters.Clear();
 655                     client.Parameters.Add("format", "json");
 656                     client.Parameters.Add("path", folder);
 657                     client.IfModifiedSince = since;
 658                     var content = client.DownloadStringWithRetry(container, 3);
 659                     client.AssertStatusOK("ListObjects failed");
 660
 661                     if (client.StatusCode==HttpStatusCode.NotModified)
 662                         return new[]{new NoModificationInfo(account,container,folder)};
 663
 664                     var infos = JsonConvert.DeserializeObject<IList<ObjectInfo>>(content);
 665                     foreach (var info in infos)
 666                     {
 667                         info.Account = account;
 668                         if (info.Container == null)
 669                             info.Container = container;
 670                         info.StorageUri = this.StorageUrl;
 671                     }
 672                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 673                     return infos;
 674                 }
 675             }
 676         }
 677
 678
 679         public bool ContainerExists(string account, string container)
 680         {
 681             if (String.IsNullOrWhiteSpace(container))
 682                 throw new ArgumentNullException("container", "The container property can't be empty");
 683             Contract.EndContractBlock();
 684
 685             using (ThreadContext.Stacks["Containters"].Push("Exists"))
 686             {
 687                 if (Log.IsDebugEnabled) Log.DebugFormat("START");
 688
 689                 using (var client = new RestClient(_baseClient))
 690                 {
 691                     if (!String.IsNullOrWhiteSpace(account))
 692                         client.BaseAddress = GetAccountUrl(account);
 693
 694                     client.Parameters.Clear();
 695                     client.Head(container, 3);
 696
 697                     bool result;
 698                     switch (client.StatusCode)
 699                     {
 700                         case HttpStatusCode.OK:
 701                         case HttpStatusCode.NoContent:
 702                             result=true;
 703                             break;
 704                         case HttpStatusCode.NotFound:
 705                             result=false;
 706                             break;
 707                         default:
 708                             throw CreateWebException("ContainerExists", client.StatusCode);
 709                     }
 710                     if (Log.IsDebugEnabled) Log.DebugFormat("END");
 711
 712                     return result;
 713                 }
 714
 715             }
 716         }
 717
 718         public bool ObjectExists(string account, string container, string objectName)
 719         {
 720             if (String.IsNullOrWhiteSpace(container))
 721                 throw new ArgumentNullException("container", "The container property can't be empty");
 722             if (String.IsNullOrWhiteSpace(objectName))
 723                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 724             Contract.EndContractBlock();
 725
 726             using (var client = new RestClient(_baseClient))
 727             {
 728                 if (!String.IsNullOrWhiteSpace(account))
 729                     client.BaseAddress = GetAccountUrl(account);
 730
 731                 client.Parameters.Clear();
 732                 client.Head(container + "/" + objectName, 3);
 733
 734                 switch (client.StatusCode)
 735                 {
 736                     case HttpStatusCode.OK:
 737                     case HttpStatusCode.NoContent:
 738                         return true;
 739                     case HttpStatusCode.NotFound:
 740                         return false;
 741                     default:
 742                         throw CreateWebException("ObjectExists", client.StatusCode);
 743                 }
 744             }
 745
 746         }
 747
 748         public ObjectInfo GetObjectInfo(string account, string container, string objectName)
 749         {
 750             if (String.IsNullOrWhiteSpace(container))
 751                 throw new ArgumentNullException("container", "The container property can't be empty");
 752             if (String.IsNullOrWhiteSpace(objectName))
 753                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 754             Contract.EndContractBlock();
 755
 756             using (ThreadContext.Stacks["Objects"].Push("GetObjectInfo"))
 757             {
 758
 759                 using (var client = new RestClient(_baseClient))
 760                 {
 761                     if (!String.IsNullOrWhiteSpace(account))
 762                         client.BaseAddress = GetAccountUrl(account);
 763                     try
 764                     {
 765                         client.Parameters.Clear();
 766
 767                         client.Head(container + "/" + objectName, 3);
 768
 769                         if (client.TimedOut)
 770                             return ObjectInfo.Empty;
 771
 772                         switch (client.StatusCode)
 773                         {
 774                             case HttpStatusCode.OK:
 775                             case HttpStatusCode.NoContent:
 776                                 var keys = client.ResponseHeaders.AllKeys.AsQueryable();
 777                                 var tags = client.GetMeta("X-Object-Meta-");
 778                                 var extensions = (from key in keys
 779                                                   where key.StartsWith("X-Object-") && !key.StartsWith("X-Object-Meta-")
 780                                                   select new {Name = key, Value = client.ResponseHeaders[key]})
 781                                     .ToDictionary(t => t.Name, t => t.Value);
 782
 783                                 var permissions=client.GetHeaderValue("X-Object-Sharing", true);
 784
 785
 786                                 var info = new ObjectInfo
 787                                                {
 788                                                    Account = account,
 789                                                    Container = container,
 790                                                    Name = objectName,
 791                                                    Hash = client.GetHeaderValue("ETag"),
 792                                                    Content_Type = client.GetHeaderValue("Content-Type"),
 793                                                    Bytes = Convert.ToInt64(client.GetHeaderValue("Content-Length",true)),
 794                                                    Tags = tags,
 795                                                    Last_Modified = client.LastModified,
 796                                                    Extensions = extensions,
 797                                                    ContentEncoding=client.GetHeaderValue("Content-Encoding",true),
 798                                                    ContendDisposition = client.GetHeaderValue("Content-Disposition",true),
 799                                                    Manifest=client.GetHeaderValue("X-Object-Manifest",true),
 800                                                    PublicUrl=client.GetHeaderValue("X-Object-Public",true),
 801                                                    StorageUri=this.StorageUrl,
 802                                                };
 803                                 info.SetPermissions(permissions);
 804                                 return info;
 805                             case HttpStatusCode.NotFound:
 806                                 return ObjectInfo.Empty;
 807                             default:
 808                                 throw new WebException(
 809                                     String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}",
 810                                                   objectName, client.StatusCode));
 811                         }
 812
 813                     }
 814                     catch (RetryException)
 815                     {
 816                         Log.WarnFormat("[RETRY FAIL] GetObjectInfo for {0} failed.",objectName);
 817                         return ObjectInfo.Empty;
 818                     }
 819                     catch (WebException e)
 820                     {
 821                         Log.Error(
 822                             String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}",
 823                                           objectName, client.StatusCode), e);
 824                         throw;
 825                     }
 826                 }
 827             }
 828
 829         }
 830
 831         public void CreateFolder(string account, string container, string folder)
 832         {
 833             if (String.IsNullOrWhiteSpace(container))
 834                 throw new ArgumentNullException("container", "The container property can't be empty");
 835             if (String.IsNullOrWhiteSpace(folder))
 836                 throw new ArgumentNullException("folder", "The folder property can't be empty");
 837             Contract.EndContractBlock();
 838
 839             var folderUrl=String.Format("{0}/{1}",container,folder);
 840             using (var client = new RestClient(_baseClient))
 841             {
 842                 if (!String.IsNullOrWhiteSpace(account))
 843                     client.BaseAddress = GetAccountUrl(account);
 844
 845                 client.Parameters.Clear();
 846                 client.Headers.Add("Content-Type", @"application/directory");
 847                 client.Headers.Add("Content-Length", "0");
 848                 client.PutWithRetry(folderUrl, 3);
 849
 850                 if (client.StatusCode != HttpStatusCode.Created && client.StatusCode != HttpStatusCode.Accepted)
 851                     throw CreateWebException("CreateFolder", client.StatusCode);
 852             }
 853         }
 854
 855
 856
 857         public ContainerInfo GetContainerInfo(string account, string container)
 858         {
 859             if (String.IsNullOrWhiteSpace(container))
 860                 throw new ArgumentNullException("container", "The container property can't be empty");
 861             Contract.EndContractBlock();
 862
 863             using (var client = new RestClient(_baseClient))
 864             {
 865                 if (!String.IsNullOrWhiteSpace(account))
 866                     client.BaseAddress = GetAccountUrl(account);
 867
 868                 client.Head(container);
 869                 switch (client.StatusCode)
 870                 {
 871                     case HttpStatusCode.OK:
 872                     case HttpStatusCode.NoContent:
 873                         var tags = client.GetMeta("X-Container-Meta-");
 874                         var policies = client.GetMeta("X-Container-Policy-");
 875
 876                         var containerInfo = new ContainerInfo
 877                                                 {
 878                                                     Account=account,
 879                                                     Name = container,
 880                                                     StorageUrl=this.StorageUrl.ToString(),
 881                                                     Count =
 882                                                         long.Parse(client.GetHeaderValue("X-Container-Object-Count")),
 883                                                     Bytes = long.Parse(client.GetHeaderValue("X-Container-Bytes-Used")),
 884                                                     BlockHash = client.GetHeaderValue("X-Container-Block-Hash"),
 885                                                     BlockSize=int.Parse(client.GetHeaderValue("X-Container-Block-Size")),
 886                                                     Last_Modified=client.LastModified,
 887                                                     Tags=tags,
 888                                                     Policies=policies
 889                                                 };
 890
 891
 892                         return containerInfo;
 893                     case HttpStatusCode.NotFound:
 894                         return ContainerInfo.Empty;
 895                     default:
 896                         throw CreateWebException("GetContainerInfo", client.StatusCode);
 897                 }
 898             }
 899         }
 900
 901         public void CreateContainer(string account, string container)
 902         {
 903             if (String.IsNullOrWhiteSpace(account))
 904                 throw new ArgumentNullException("account");
 905             if (String.IsNullOrWhiteSpace(container))
 906                 throw new ArgumentNullException("container");
 907             Contract.EndContractBlock();
 908
 909             using (var client = new RestClient(_baseClient))
 910             {
 911                 if (!String.IsNullOrWhiteSpace(account))
 912                     client.BaseAddress = GetAccountUrl(account);
 913
 914                 client.PutWithRetry(container, 3);
 915                 var expectedCodes = new[] {HttpStatusCode.Created, HttpStatusCode.Accepted, HttpStatusCode.OK};
 916                 if (!expectedCodes.Contains(client.StatusCode))
 917                     throw CreateWebException("CreateContainer", client.StatusCode);
 918             }
 919         }
 920
 921         public void DeleteContainer(string account, string container)
 922         {
 923             if (String.IsNullOrWhiteSpace(container))
 924                 throw new ArgumentNullException("container", "The container property can't be empty");
 925             Contract.EndContractBlock();
 926
 927             using (var client = new RestClient(_baseClient))
 928             {
 929                 if (!String.IsNullOrWhiteSpace(account))
 930                     client.BaseAddress = GetAccountUrl(account);
 931
 932                 client.DeleteWithRetry(container, 3);
 933                 var expectedCodes = new[] {HttpStatusCode.NotFound, HttpStatusCode.NoContent};
 934                 if (!expectedCodes.Contains(client.StatusCode))
 935                     throw CreateWebException("DeleteContainer", client.StatusCode);
 936             }
 937
 938         }
 939
 940         /// <summary>
 941         ///
 942         /// </summary>
 943         /// <param name="account"></param>
 944         /// <param name="container"></param>
 945         /// <param name="objectName"></param>
 946         /// <param name="fileName"></param>
 947         /// <returns></returns>
 948         /// <remarks>This method should have no timeout or a very long one</remarks>
 949         //Asynchronously download the object specified by *objectName* in a specific *container* to
 950         // a local file
 951         public async Task GetObject(string account, string container, string objectName, string fileName,CancellationToken cancellationToken)
 952         {
 953             if (String.IsNullOrWhiteSpace(container))
 954                 throw new ArgumentNullException("container", "The container property can't be empty");
 955             if (String.IsNullOrWhiteSpace(objectName))
 956                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
 957             Contract.EndContractBlock();
 958
 959             try
 960             {
 961                 //WebClient, and by extension RestClient, are not thread-safe. Create a new RestClient
 962                 //object to avoid concurrency errors.
 963                 //
 964                 //Download operations take a long time therefore they have no timeout.
 965                 using(var client = new RestClient(_baseClient) { Timeout = 0 })
 966                 {
 967                     if (!String.IsNullOrWhiteSpace(account))
 968                         client.BaseAddress = GetAccountUrl(account);
 969
 970                     //The container and objectName are relative names. They are joined with the client's
 971                     //BaseAddress to create the object's absolute address
 972                     var builder = client.GetAddressBuilder(container, objectName);
 973                     var uri = builder.Uri;
 974
 975                     //Download progress is reported to the Trace log
 976                     Log.InfoFormat("[GET] START {0}", objectName);
 977                     client.DownloadProgressChanged += (sender, args) =>
 978                                                       Log.InfoFormat("[GET PROGRESS] {0} {1}% {2} of {3}",
 979                                                                      fileName, args.ProgressPercentage,
 980                                                                      args.BytesReceived,
 981                                                                      args.TotalBytesToReceive);
 982
 983
 984                     //Start downloading the object asynchronously
 985                     await client.DownloadFileTaskAsync(uri, fileName,cancellationToken);
 986
 987                     //Once the download completes
 988                     //Delete the local client object
 989                 }
 990                 //And report failure or completion
 991             }
 992             catch (Exception exc)
 993             {
 994                 Log.ErrorFormat("[GET] FAIL {0} with {1}", objectName, exc);
 995                 throw;
 996             }
 997
 998             Log.InfoFormat("[GET] END {0}", objectName);
 999
1000
1001         }
1002
1003         public Task<IList<string>> PutHashMap(string account, string container, string objectName, TreeHash hash)
1004         {
1005             if (String.IsNullOrWhiteSpace(container))
1006                 throw new ArgumentNullException("container");
1007             if (String.IsNullOrWhiteSpace(objectName))
1008                 throw new ArgumentNullException("objectName");
1009             if (hash==null)
1010                 throw new ArgumentNullException("hash");
1011             if (String.IsNullOrWhiteSpace(Token))
1012                 throw new InvalidOperationException("Invalid Token");
1013             if (StorageUrl == null)
1014                 throw new InvalidOperationException("Invalid Storage Url");
1015             Contract.EndContractBlock();
1016
1017
1018             //Don't use a timeout because putting the hashmap may be a long process
1019             var client = new RestClient(_baseClient) { Timeout = 0 };
1020             if (!String.IsNullOrWhiteSpace(account))
1021                 client.BaseAddress = GetAccountUrl(account);
1022
1023             //The container and objectName are relative names. They are joined with the client's
1024             //BaseAddress to create the object's absolute address
1025             var builder = client.GetAddressBuilder(container, objectName);
1026             builder.Query = "format=json&hashmap";
1027             var uri = builder.Uri;
1028
1029
1030             //Send the tree hash as Json to the server
1031             client.Headers[HttpRequestHeader.ContentType] = "application/octet-stream";
1032             var jsonHash = hash.ToJson();
1033             var uploadTask=client.UploadStringTask(uri, "PUT", jsonHash);
1034             if (Log.IsDebugEnabled)
1035                 Log.DebugFormat("Hashes:\r\n{0}", jsonHash);
1036             return uploadTask.ContinueWith(t =>
1037             {
1038
1039                 var empty = (IList<string>)new List<string>();
1040
1041
1042                 //The server will respond either with 201-created if all blocks were already on the server
1043                 if (client.StatusCode == HttpStatusCode.Created)
1044                 {
1045                     //in which case we return an empty hash list
1046                     return empty;
1047                 }
1048                 //or with a 409-conflict and return the list of missing parts
1049                 //A 409 will cause an exception so we need to check t.IsFaulted to avoid propagating the exception
1050                 if (t.IsFaulted)
1051                 {
1052                     var ex = t.Exception.InnerException;
1053                     var we = ex as WebException;
1054                     var response = we.Response as HttpWebResponse;
1055                     if (response!=null && response.StatusCode==HttpStatusCode.Conflict)
1056                     {
1057                         //In case of 409 the missing parts will be in the response content
1058                         using (var stream = response.GetResponseStream())
1059                         using(var reader=stream.GetLoggedReader(Log))
1060                         {
1061                             //We used to have to cleanup the content before returning it because it contains
1062                             //error content after the list of hashes
1063                             //
1064                             //As of 30/1/2012, the result is a proper Json array so we don't need to read the content
1065                             //line by line
1066
1067                             var serializer = new JsonSerializer();
1068                             serializer.Error += (sender, args) => Log.ErrorFormat("Deserialization error at [{0}] [{1}]", args.ErrorContext.Error, args.ErrorContext.Member);
1069                             var hashes = (List<string>)serializer.Deserialize(reader, typeof(List<string>));
1070                             return hashes;
1071                         }
1072                     }
1073                     //Any other status code is unexpected and the exception should be rethrown
1074                     Log.LogError(response);
1075                     throw ex;
1076
1077                 }
1078
1079                 //Any other status code is unexpected but there was no exception. We can probably continue processing
1080                 Log.WarnFormat("Unexcpected status code when putting map: {0} - {1}",client.StatusCode,client.StatusDescription);
1081
1082                 return empty;
1083             });
1084
1085         }
1086
1087
1088         public async Task<byte[]> GetBlock(string account, string container, Uri relativeUrl, long start, long? end, CancellationToken cancellationToken)
1089         {
1090             if (String.IsNullOrWhiteSpace(Token))
1091                 throw new InvalidOperationException("Invalid Token");
1092             if (StorageUrl == null)
1093                 throw new InvalidOperationException("Invalid Storage Url");
1094             if (String.IsNullOrWhiteSpace(container))
1095                 throw new ArgumentNullException("container");
1096             if (relativeUrl == null)
1097                 throw new ArgumentNullException("relativeUrl");
1098             if (end.HasValue && end < 0)
1099                 throw new ArgumentOutOfRangeException("end");
1100             if (start < 0)
1101                 throw new ArgumentOutOfRangeException("start");
1102             Contract.EndContractBlock();
1103
1104             //Don't use a timeout because putting the hashmap may be a long process
1105             using (var client = new RestClient(_baseClient) {Timeout = 0, RangeFrom = start, RangeTo = end})
1106             {
1107                 if (!String.IsNullOrWhiteSpace(account))
1108                     client.BaseAddress = GetAccountUrl(account);
1109
1110                 var builder = client.GetAddressBuilder(container, relativeUrl.ToString());
1111                 var uri = builder.Uri;
1112
1113                 var result = await client.DownloadDataTaskAsync(uri, cancellationToken);
1114                 return result;
1115             }
1116         }
1117
1118
1119         public async Task PostBlock(string account, string container, byte[] block, int offset, int count)
1120         {
1121             if (String.IsNullOrWhiteSpace(container))
1122                 throw new ArgumentNullException("container");
1123             if (block == null)
1124                 throw new ArgumentNullException("block");
1125             if (offset < 0 || offset >= block.Length)
1126                 throw new ArgumentOutOfRangeException("offset");
1127             if (count < 0 || count > block.Length)
1128                 throw new ArgumentOutOfRangeException("count");
1129             if (String.IsNullOrWhiteSpace(Token))
1130                 throw new InvalidOperationException("Invalid Token");
1131             if (StorageUrl == null)
1132                 throw new InvalidOperationException("Invalid Storage Url");
1133             Contract.EndContractBlock();
1134
1135
1136             try
1137             {
1138
1139             //Don't use a timeout because putting the hashmap may be a long process
1140                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1141                 {
1142                     if (!String.IsNullOrWhiteSpace(account))
1143                         client.BaseAddress = GetAccountUrl(account);
1144
1145                     var builder = client.GetAddressBuilder(container, "");
1146                     //We are doing an update
1147                     builder.Query = "update";
1148                     var uri = builder.Uri;
1149
1150                     client.Headers[HttpRequestHeader.ContentType] = "application/octet-stream";
1151
1152                     Log.InfoFormat("[BLOCK POST] START");
1153
1154                     client.UploadProgressChanged += (sender, args) =>
1155                                                     Log.InfoFormat("[BLOCK POST PROGRESS] {0}% {1} of {2}",
1156                                                                    args.ProgressPercentage, args.BytesSent,
1157                                                                    args.TotalBytesToSend);
1158                     client.UploadFileCompleted += (sender, args) =>
1159                                                   Log.InfoFormat("[BLOCK POST PROGRESS] Completed ");
1160
1161                     var buffer = new byte[count];
1162                     Buffer.BlockCopy(block, offset, buffer, 0, count);
1163                     //Send the block
1164                     await client.UploadDataTaskAsync(uri, "POST", buffer);
1165                     Log.InfoFormat("[BLOCK POST] END");
1166                 }
1167             }
1168             catch (Exception exc)
1169             {
1170                 Log.ErrorFormat("[BLOCK POST] FAIL with \r{0}", exc);
1171                 throw;
1172             }
1173         }
1174
1175
1176         public async Task<TreeHash> GetHashMap(string account, string container, string objectName)
1177         {
1178             if (String.IsNullOrWhiteSpace(container))
1179                 throw new ArgumentNullException("container");
1180             if (String.IsNullOrWhiteSpace(objectName))
1181                 throw new ArgumentNullException("objectName");
1182             if (String.IsNullOrWhiteSpace(Token))
1183                 throw new InvalidOperationException("Invalid Token");
1184             if (StorageUrl == null)
1185                 throw new InvalidOperationException("Invalid Storage Url");
1186             Contract.EndContractBlock();
1187
1188             try
1189             {
1190                 //WebClient, and by extension RestClient, are not thread-safe. Create a new RestClient
1191                 //object to avoid concurrency errors.
1192                 //
1193                 //Download operations take a long time therefore they have no timeout.
1194                 //TODO: Do they really? this is a hashmap operation, not a download
1195
1196                 //Start downloading the object asynchronously
1197                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1198                 {
1199                     if (!String.IsNullOrWhiteSpace(account))
1200                         client.BaseAddress = GetAccountUrl(account);
1201
1202                     //The container and objectName are relative names. They are joined with the client's
1203                     //BaseAddress to create the object's absolute address
1204                     var builder = client.GetAddressBuilder(container, objectName);
1205                     builder.Query = "format=json&hashmap";
1206                     var uri = builder.Uri;
1207
1208
1209                     var json = await client.DownloadStringTaskAsync(uri);
1210                     var treeHash = TreeHash.Parse(json);
1211                     Log.InfoFormat("[GET HASH] END {0}", objectName);
1212                     return treeHash;
1213                 }
1214             }
1215             catch (Exception exc)
1216             {
1217                 Log.ErrorFormat("[GET HASH] END {0} with {1}", objectName, exc);
1218                 throw;
1219             }
1220
1221         }
1222
1223
1224         /// <summary>
1225         ///
1226         /// </summary>
1227         /// <param name="account"></param>
1228         /// <param name="container"></param>
1229         /// <param name="objectName"></param>
1230         /// <param name="fileName"></param>
1231         /// <param name="hash">Optional hash value for the file. If no hash is provided, the method calculates a new hash</param>
1232         /// <remarks>>This method should have no timeout or a very long one</remarks>
1233         public async Task PutObject(string account, string container, string objectName, string fileName, string hash = null, string contentType = "application/octet-stream")
1234         {
1235             if (String.IsNullOrWhiteSpace(container))
1236                 throw new ArgumentNullException("container", "The container property can't be empty");
1237             if (String.IsNullOrWhiteSpace(objectName))
1238                 throw new ArgumentNullException("objectName", "The objectName property can't be empty");
1239             if (String.IsNullOrWhiteSpace(fileName))
1240                 throw new ArgumentNullException("fileName", "The fileName property can't be empty");
1241 /*
1242             if (!File.Exists(fileName) && !Directory.Exists(fileName))
1243                 throw new FileNotFoundException("The file or directory does not exist",fileName);
1244 */
1245
1246             try
1247             {
1248
1249                 using (var client = new RestClient(_baseClient) { Timeout = 0 })
1250                 {
1251                     if (!String.IsNullOrWhiteSpace(account))
1252                         client.BaseAddress = GetAccountUrl(account);
1253
1254                     var builder = client.GetAddressBuilder(container, objectName);
1255                     var uri = builder.Uri;
1256
1257                     string etag = hash ?? CalculateHash(fileName);
1258
1259                     client.Headers.Add("Content-Type", contentType);
1260                     client.Headers.Add("ETag", etag);
1261
1262
1263                     Log.InfoFormat("[PUT] START {0}", objectName);
1264                     client.UploadProgressChanged += (sender, args) =>
1265                                                         {
1266                                                             using (ThreadContext.Stacks["PUT"].Push("Progress"))
1267                                                             {
1268                                                                 Log.InfoFormat("{0} {1}% {2} of {3}", fileName,
1269                                                                                args.ProgressPercentage,
1270                                                                                args.BytesSent, args.TotalBytesToSend);
1271                                                             }
1272                                                         };
1273
1274                     client.UploadFileCompleted += (sender, args) =>
1275                                                       {
1276                                                           using (ThreadContext.Stacks["PUT"].Push("Progress"))
1277                                                           {
1278                                                               Log.InfoFormat("Completed {0}", fileName);
1279                                                           }
1280                                                       };
1281                     if (contentType=="application/directory")
1282                         await client.UploadDataTaskAsync(uri, "PUT", new byte[0]);
1283                     else
1284                         await client.UploadFileTaskAsync(uri, "PUT", fileName);
1285                 }
1286
1287                 Log.InfoFormat("[PUT] END {0}", objectName);
1288             }
1289             catch (Exception exc)
1290             {
1291                 Log.ErrorFormat("[PUT] END {0} with {1}", objectName, exc);
1292                 throw;
1293             }
1294
1295         }
1296
1297
1298         private static string CalculateHash(string fileName)
1299         {
1300             Contract.Requires(!String.IsNullOrWhiteSpace(fileName));
1301             Contract.EndContractBlock();
1302
1303             string hash;
1304             using (var hasher = MD5.Create())
1305             using(var stream=File.OpenRead(fileName))
1306             {
1307                 var hashBuilder=new StringBuilder();
1308                 foreach (byte b in hasher.ComputeHash(stream))
1309                     hashBuilder.Append(b.ToString("x2").ToLower());
1310                 hash = hashBuilder.ToString();
1311             }
1312             return hash;
1313         }
1314
1315         public void MoveObject(string account, string sourceContainer, string oldObjectName, string targetContainer, string newObjectName)
1316         {
1317             if (String.IsNullOrWhiteSpace(sourceContainer))
1318                 throw new ArgumentNullException("sourceContainer", "The container property can't be empty");
1319             if (String.IsNullOrWhiteSpace(oldObjectName))
1320                 throw new ArgumentNullException("oldObjectName", "The oldObjectName property can't be empty");
1321             if (String.IsNullOrWhiteSpace(targetContainer))
1322                 throw new ArgumentNullException("targetContainer", "The container property can't be empty");
1323             if (String.IsNullOrWhiteSpace(newObjectName))
1324                 throw new ArgumentNullException("newObjectName", "The newObjectName property can't be empty");
1325             Contract.EndContractBlock();
1326
1327             var targetUrl = targetContainer + "/" + newObjectName;
1328             var sourceUrl = String.Format("/{0}/{1}", sourceContainer, oldObjectName);
1329
1330             using (var client = new RestClient(_baseClient))
1331             {
1332                 if (!String.IsNullOrWhiteSpace(account))
1333                     client.BaseAddress = GetAccountUrl(account);
1334
1335                 client.Headers.Add("X-Move-From", sourceUrl);
1336                 client.PutWithRetry(targetUrl, 3);
1337
1338                 var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created};
1339                 if (!expectedCodes.Contains(client.StatusCode))
1340                     throw CreateWebException("MoveObject", client.StatusCode);
1341             }
1342         }
1343
1344         public void DeleteObject(string account, string sourceContainer, string objectName)
1345         {
1346             if (String.IsNullOrWhiteSpace(sourceContainer))
1347                 throw new ArgumentNullException("sourceContainer", "The container property can't be empty");
1348             if (String.IsNullOrWhiteSpace(objectName))
1349                 throw new ArgumentNullException("objectName", "The oldObjectName property can't be empty");
1350             Contract.EndContractBlock();
1351
1352             var targetUrl = FolderConstants.TrashContainer + "/" + objectName;
1353             var sourceUrl = String.Format("/{0}/{1}", sourceContainer, objectName);
1354
1355             using (var client = new RestClient(_baseClient))
1356             {
1357                 if (!String.IsNullOrWhiteSpace(account))
1358                     client.BaseAddress = GetAccountUrl(account);
1359
1360                 client.Headers.Add("X-Move-From", sourceUrl);
1361                 client.AllowedStatusCodes.Add(HttpStatusCode.NotFound);
1362                 Log.InfoFormat("[TRASH] [{0}] to [{1}]",sourceUrl,targetUrl);
1363                 client.PutWithRetry(targetUrl, 3);
1364
1365                 var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created,HttpStatusCode.NotFound};
1366                 if (!expectedCodes.Contains(client.StatusCode))
1367                     throw CreateWebException("DeleteObject", client.StatusCode);
1368             }
1369         }
1370
1371
1372         private static WebException CreateWebException(string operation, HttpStatusCode statusCode)
1373         {
1374             return new WebException(String.Format("{0} failed with unexpected status code {1}", operation, statusCode));
1375         }
1376
1377
1378 /*
1379         public IEnumerable<ObjectInfo> ListDirectories(ContainerInfo container)
1380         {
1381             var directories=this.ListObjects(container.Account, container.Name, "/");
1382         }
1383 */
1384
1385         public bool CanUpload(string account, ObjectInfo cloudFile)
1386         {
1387             Contract.Requires(!String.IsNullOrWhiteSpace(account));
1388             Contract.Requires(cloudFile!=null);
1389
1390             using (var client = new RestClient(_baseClient))
1391             {
1392                 if (!String.IsNullOrWhiteSpace(account))
1393                     client.BaseAddress = GetAccountUrl(account);
1394
1395
1396                 var parts = cloudFile.Name.Split('/');
1397                 var folder = String.Join("/", parts,0,parts.Length-1);
1398
1399                 var fileUrl=String.Format("{0}/{1}/{2}.pithos.ignore",cloudFile.Container,folder,Guid.NewGuid());
1400
1401                 client.Parameters.Clear();
1402                 try
1403                 {
1404                     client.PutWithRetry(fileUrl, 3, @"application/octet-stream");
1405
1406                     var expectedCodes = new[] { HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created};
1407                     var result=(expectedCodes.Contains(client.StatusCode));
1408                     DeleteObject(account, cloudFile.Container, fileUrl);
1409                     return result;
1410                 }
1411                 catch
1412                 {
1413                     return false;
1414                 }
1415             }
1416         }
1417     }
1418
1419     public class ShareAccountInfo
1420     {
1421         public DateTime? last_modified { get; set; }
1422         public string name { get; set; }
1423     }
1424 }