root / trunk / Pithos.Network / CloudFilesClient.cs @ 42800be8
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// **CloudFilesClient** provides a simple client interface to CloudFiles and Pithos |
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// |
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// The class provides methods to upload/download files, delete files, manage containers |
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|
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|
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using System; |
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using System.Collections.Generic; |
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using System.ComponentModel.Composition; |
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using System.Diagnostics.Contracts; |
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using System.IO; |
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using System.Linq; |
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using System.Net; |
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using System.Security.Cryptography; |
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using System.Text; |
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using System.Threading.Tasks; |
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using Newtonsoft.Json; |
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using Pithos.Interfaces; |
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using log4net; |
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|
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namespace Pithos.Network |
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{ |
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[Export(typeof(ICloudClient))] |
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public class CloudFilesClient:ICloudClient |
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{ |
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//CloudFilesClient uses *_baseClient* internally to communicate with the server |
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//RestClient provides a REST-friendly interface over the standard WebClient. |
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private RestClient _baseClient; |
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|
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|
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//During authentication the client provides a UserName |
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public string UserName { get; set; } |
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|
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//and and ApiKey to the server |
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public string ApiKey { get; set; } |
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|
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//And receives an authentication Token. This token must be provided in ALL other operations, |
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//in the X-Auth-Token header |
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private string _token; |
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public string Token |
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{ |
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get { return _token; } |
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set |
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{ |
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_token = value; |
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_baseClient.Headers["X-Auth-Token"] = value; |
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} |
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} |
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|
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//The client also receives a StorageUrl after authentication. All subsequent operations must |
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//use this url |
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public Uri StorageUrl { get; set; } |
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|
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|
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protected Uri RootAddressUri { get; set; } |
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|
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private Uri _proxy; |
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public Uri Proxy |
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{ |
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get { return _proxy; } |
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set |
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{ |
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_proxy = value; |
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if (_baseClient != null) |
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_baseClient.Proxy = new WebProxy(value); |
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} |
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} |
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|
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public double DownloadPercentLimit { get; set; } |
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public double UploadPercentLimit { get; set; } |
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|
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public string AuthenticationUrl { get; set; } |
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|
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|
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public string VersionPath |
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{ |
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get { return UsePithos ? "v1" : "v1.0"; } |
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} |
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|
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public bool UsePithos { get; set; } |
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|
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|
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private static readonly ILog Log = LogManager.GetLogger("CloudFilesClient"); |
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|
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public CloudFilesClient(string userName, string apiKey) |
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{ |
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UserName = userName; |
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ApiKey = apiKey; |
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} |
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|
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public CloudFilesClient(AccountInfo accountInfo) |
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{ |
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if (accountInfo==null) |
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throw new ArgumentNullException("accountInfo"); |
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Contract.Ensures(!String.IsNullOrWhiteSpace(Token)); |
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Contract.Ensures(StorageUrl != null); |
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Contract.Ensures(_baseClient != null); |
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Contract.Ensures(RootAddressUri != null); |
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Contract.EndContractBlock(); |
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|
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_baseClient = new RestClient |
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{ |
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BaseAddress = accountInfo.StorageUri.ToString(), |
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Timeout = 10000, |
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Retries = 3 |
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}; |
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StorageUrl = accountInfo.StorageUri; |
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Token = accountInfo.Token; |
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UserName = accountInfo.UserName; |
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|
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//Get the root address (StorageUrl without the account) |
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var storageUrl = StorageUrl.AbsoluteUri; |
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var usernameIndex = storageUrl.LastIndexOf(UserName); |
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var rootUrl = storageUrl.Substring(0, usernameIndex); |
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RootAddressUri = new Uri(rootUrl); |
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} |
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|
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|
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public AccountInfo Authenticate() |
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{ |
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if (String.IsNullOrWhiteSpace(UserName)) |
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throw new InvalidOperationException("UserName is empty"); |
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if (String.IsNullOrWhiteSpace(ApiKey)) |
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throw new InvalidOperationException("ApiKey is empty"); |
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if (String.IsNullOrWhiteSpace(AuthenticationUrl)) |
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throw new InvalidOperationException("AuthenticationUrl is empty"); |
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Contract.Ensures(!String.IsNullOrWhiteSpace(Token)); |
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Contract.Ensures(StorageUrl != null); |
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Contract.Ensures(_baseClient != null); |
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Contract.Ensures(RootAddressUri != null); |
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Contract.EndContractBlock(); |
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|
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|
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Log.InfoFormat("[AUTHENTICATE] Start for {0}", UserName); |
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|
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using (var authClient = new RestClient{BaseAddress=AuthenticationUrl}) |
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{ |
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if (Proxy != null) |
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authClient.Proxy = new WebProxy(Proxy); |
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|
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Contract.Assume(authClient.Headers!=null); |
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|
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authClient.Headers.Add("X-Auth-User", UserName); |
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authClient.Headers.Add("X-Auth-Key", ApiKey); |
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|
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authClient.DownloadStringWithRetry(VersionPath, 3); |
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|
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authClient.AssertStatusOK("Authentication failed"); |
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|
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var storageUrl = authClient.GetHeaderValue("X-Storage-Url"); |
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if (String.IsNullOrWhiteSpace(storageUrl)) |
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throw new InvalidOperationException("Failed to obtain storage url"); |
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|
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_baseClient = new RestClient |
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{ |
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BaseAddress = storageUrl, |
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Timeout = 10000, |
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Retries = 3 |
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}; |
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|
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StorageUrl = new Uri(storageUrl); |
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|
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//Get the root address (StorageUrl without the account) |
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var usernameIndex=storageUrl.LastIndexOf(UserName); |
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var rootUrl = storageUrl.Substring(0, usernameIndex); |
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RootAddressUri = new Uri(rootUrl); |
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|
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var token = authClient.GetHeaderValue("X-Auth-Token"); |
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if (String.IsNullOrWhiteSpace(token)) |
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throw new InvalidOperationException("Failed to obtain token url"); |
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Token = token; |
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|
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} |
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|
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Log.InfoFormat("[AUTHENTICATE] End for {0}", UserName); |
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|
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|
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return new AccountInfo {StorageUri = StorageUrl, Token = Token, UserName = UserName}; |
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|
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} |
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|
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|
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|
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public IList<ContainerInfo> ListContainers(string account) |
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{ |
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using (var client = new RestClient(_baseClient)) |
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{ |
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if (!String.IsNullOrWhiteSpace(account)) |
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client.BaseAddress = GetAccountUrl(account); |
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|
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client.Parameters.Clear(); |
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client.Parameters.Add("format", "json"); |
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var content = client.DownloadStringWithRetry("", 3); |
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client.AssertStatusOK("List Containers failed"); |
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|
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if (client.StatusCode == HttpStatusCode.NoContent) |
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return new List<ContainerInfo>(); |
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var infos = JsonConvert.DeserializeObject<IList<ContainerInfo>>(content); |
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|
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foreach (var info in infos) |
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{ |
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info.Account = account; |
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} |
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return infos; |
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} |
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|
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} |
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|
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private string GetAccountUrl(string account) |
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{ |
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return new Uri(this.RootAddressUri, new Uri(account,UriKind.Relative)).AbsoluteUri; |
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} |
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|
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public IList<ShareAccountInfo> ListSharingAccounts(DateTime? since=null) |
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{ |
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using (log4net.ThreadContext.Stacks["Share"].Push("List Accounts")) |
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{ |
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if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
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|
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using (var client = new RestClient(_baseClient)) |
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{ |
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client.Parameters.Clear(); |
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client.Parameters.Add("format", "json"); |
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client.IfModifiedSince = since; |
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|
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//Extract the username from the base address |
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client.BaseAddress = RootAddressUri.AbsoluteUri; |
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|
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var content = client.DownloadStringWithRetry(@"", 3); |
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|
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client.AssertStatusOK("ListSharingAccounts failed"); |
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|
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//If the result is empty, return an empty list, |
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var infos = String.IsNullOrWhiteSpace(content) |
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? new List<ShareAccountInfo>() |
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//Otherwise deserialize the account list into a list of ShareAccountInfos |
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: JsonConvert.DeserializeObject<IList<ShareAccountInfo>>(content); |
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|
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Log.DebugFormat("END"); |
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return infos; |
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} |
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} |
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} |
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|
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//Request listing of all objects in a container modified since a specific time. |
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//If the *since* value is missing, return all objects |
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public IList<ObjectInfo> ListSharedObjects(DateTime? since = null) |
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{ |
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|
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using (log4net.ThreadContext.Stacks["Share"].Push("List Objects")) |
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{ |
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if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
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|
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var objects = new List<ObjectInfo>(); |
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var accounts = ListSharingAccounts(since); |
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foreach (var account in accounts) |
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{ |
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var containers = ListContainers(account.name); |
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foreach (var container in containers) |
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{ |
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var containerObjects = ListObjects(account.name, container.Name, null); |
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objects.AddRange(containerObjects); |
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} |
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} |
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if (Log.IsDebugEnabled) Log.DebugFormat("END"); |
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return objects; |
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} |
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} |
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|
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public void ShareObject(string account, string container, string objectName, string shareTo, bool read, bool write) |
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{ |
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if (String.IsNullOrWhiteSpace(Token)) |
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throw new InvalidOperationException("The Token is not set"); |
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if (StorageUrl==null) |
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throw new InvalidOperationException("The StorageUrl is not set"); |
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if (String.IsNullOrWhiteSpace(container)) |
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throw new ArgumentNullException("container"); |
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if (String.IsNullOrWhiteSpace(objectName)) |
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throw new ArgumentNullException("objectName"); |
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if (String.IsNullOrWhiteSpace(account)) |
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throw new ArgumentNullException("account"); |
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if (String.IsNullOrWhiteSpace(shareTo)) |
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throw new ArgumentNullException("shareTo"); |
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Contract.EndContractBlock(); |
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|
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using (log4net.ThreadContext.Stacks["Share"].Push("Share Object")) |
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{ |
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if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
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|
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using (var client = new RestClient(_baseClient)) |
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{ |
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|
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client.BaseAddress = GetAccountUrl(account); |
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|
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client.Parameters.Clear(); |
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client.Parameters.Add("format", "json"); |
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|
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string permission = ""; |
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if (write) |
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permission = String.Format("write={0}", shareTo); |
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else if (read) |
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permission = String.Format("read={0}", shareTo); |
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client.Headers.Add("X-Object-Sharing", permission); |
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|
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var content = client.DownloadStringWithRetry(container, 3); |
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|
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client.AssertStatusOK("ShareObject failed"); |
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|
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//If the result is empty, return an empty list, |
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var infos = String.IsNullOrWhiteSpace(content) |
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? new List<ObjectInfo>() |
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//Otherwise deserialize the object list into a list of ObjectInfos |
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: JsonConvert.DeserializeObject<IList<ObjectInfo>>(content); |
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|
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if (Log.IsDebugEnabled) Log.DebugFormat("END"); |
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} |
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} |
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|
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|
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} |
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|
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public AccountInfo GetAccountPolicies(AccountInfo accountInfo) |
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{ |
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if (accountInfo==null) |
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throw new ArgumentNullException("accountInfo"); |
325 |
Contract.EndContractBlock(); |
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|
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using (log4net.ThreadContext.Stacks["Account"].Push("GetPolicies")) |
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{ |
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if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
330 |
|
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using (var client = new RestClient(_baseClient)) |
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{ |
333 |
if (!String.IsNullOrWhiteSpace(accountInfo.UserName)) |
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client.BaseAddress = GetAccountUrl(accountInfo.UserName); |
335 |
|
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client.Parameters.Clear(); |
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client.Parameters.Add("format", "json"); |
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client.Head(String.Empty, 3); |
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|
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var quotaValue=client.ResponseHeaders["X-Account-Policy-Quota"]; |
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var bytesValue= client.ResponseHeaders["X-Account-Bytes-Used"]; |
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|
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long quota, bytes; |
344 |
if (long.TryParse(quotaValue, out quota)) |
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accountInfo.Quota = quota; |
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if (long.TryParse(bytesValue, out bytes)) |
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accountInfo.BytesUsed = bytes; |
348 |
|
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return accountInfo; |
350 |
|
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} |
352 |
|
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} |
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} |
355 |
|
356 |
|
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public IList<ObjectInfo> ListObjects(string account, string container, DateTime? since = null) |
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{ |
359 |
if (String.IsNullOrWhiteSpace(container)) |
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throw new ArgumentNullException("container"); |
361 |
Contract.EndContractBlock(); |
362 |
|
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using (log4net.ThreadContext.Stacks["Objects"].Push("List")) |
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{ |
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if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
366 |
|
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using (var client = new RestClient(_baseClient)) |
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{ |
369 |
if (!String.IsNullOrWhiteSpace(account)) |
370 |
client.BaseAddress = GetAccountUrl(account); |
371 |
|
372 |
client.Parameters.Clear(); |
373 |
client.Parameters.Add("format", "json"); |
374 |
client.IfModifiedSince = since; |
375 |
var content = client.DownloadStringWithRetry(container, 3); |
376 |
|
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client.AssertStatusOK("ListObjects failed"); |
378 |
|
379 |
//If the result is empty, return an empty list, |
380 |
var infos = String.IsNullOrWhiteSpace(content) |
381 |
? new List<ObjectInfo>() |
382 |
//Otherwise deserialize the object list into a list of ObjectInfos |
383 |
: JsonConvert.DeserializeObject<IList<ObjectInfo>>(content); |
384 |
|
385 |
foreach (var info in infos) |
386 |
{ |
387 |
info.Container = container; |
388 |
info.Account = account; |
389 |
} |
390 |
if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
391 |
return infos; |
392 |
} |
393 |
} |
394 |
} |
395 |
|
396 |
|
397 |
|
398 |
public IList<ObjectInfo> ListObjects(string account, string container, string folder, DateTime? since = null) |
399 |
{ |
400 |
if (String.IsNullOrWhiteSpace(container)) |
401 |
throw new ArgumentNullException("container"); |
402 |
if (String.IsNullOrWhiteSpace(folder)) |
403 |
throw new ArgumentNullException("folder"); |
404 |
Contract.EndContractBlock(); |
405 |
|
406 |
using (log4net.ThreadContext.Stacks["Objects"].Push("List")) |
407 |
{ |
408 |
if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
409 |
|
410 |
using (var client = new RestClient(_baseClient)) |
411 |
{ |
412 |
if (!String.IsNullOrWhiteSpace(account)) |
413 |
client.BaseAddress = GetAccountUrl(account); |
414 |
|
415 |
client.Parameters.Clear(); |
416 |
client.Parameters.Add("format", "json"); |
417 |
client.Parameters.Add("path", folder); |
418 |
client.IfModifiedSince = since; |
419 |
var content = client.DownloadStringWithRetry(container, 3); |
420 |
client.AssertStatusOK("ListObjects failed"); |
421 |
|
422 |
var infos = JsonConvert.DeserializeObject<IList<ObjectInfo>>(content); |
423 |
|
424 |
if (Log.IsDebugEnabled) Log.DebugFormat("END"); |
425 |
return infos; |
426 |
} |
427 |
} |
428 |
} |
429 |
|
430 |
|
431 |
public bool ContainerExists(string account, string container) |
432 |
{ |
433 |
if (String.IsNullOrWhiteSpace(container)) |
434 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
435 |
Contract.EndContractBlock(); |
436 |
|
437 |
using (log4net.ThreadContext.Stacks["Containters"].Push("Exists")) |
438 |
{ |
439 |
if (Log.IsDebugEnabled) Log.DebugFormat("START"); |
440 |
|
441 |
using (var client = new RestClient(_baseClient)) |
442 |
{ |
443 |
if (!String.IsNullOrWhiteSpace(account)) |
444 |
client.BaseAddress = GetAccountUrl(account); |
445 |
|
446 |
client.Parameters.Clear(); |
447 |
client.Head(container, 3); |
448 |
|
449 |
bool result; |
450 |
switch (client.StatusCode) |
451 |
{ |
452 |
case HttpStatusCode.OK: |
453 |
case HttpStatusCode.NoContent: |
454 |
result=true; |
455 |
break; |
456 |
case HttpStatusCode.NotFound: |
457 |
result=false; |
458 |
break; |
459 |
default: |
460 |
throw CreateWebException("ContainerExists", client.StatusCode); |
461 |
} |
462 |
if (Log.IsDebugEnabled) Log.DebugFormat("END"); |
463 |
|
464 |
return result; |
465 |
} |
466 |
|
467 |
} |
468 |
} |
469 |
|
470 |
public bool ObjectExists(string account, string container, string objectName) |
471 |
{ |
472 |
if (String.IsNullOrWhiteSpace(container)) |
473 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
474 |
if (String.IsNullOrWhiteSpace(objectName)) |
475 |
throw new ArgumentNullException("objectName", "The objectName property can't be empty"); |
476 |
Contract.EndContractBlock(); |
477 |
|
478 |
using (var client = new RestClient(_baseClient)) |
479 |
{ |
480 |
if (!String.IsNullOrWhiteSpace(account)) |
481 |
client.BaseAddress = GetAccountUrl(account); |
482 |
|
483 |
client.Parameters.Clear(); |
484 |
client.Head(container + "/" + objectName, 3); |
485 |
|
486 |
switch (client.StatusCode) |
487 |
{ |
488 |
case HttpStatusCode.OK: |
489 |
case HttpStatusCode.NoContent: |
490 |
return true; |
491 |
case HttpStatusCode.NotFound: |
492 |
return false; |
493 |
default: |
494 |
throw CreateWebException("ObjectExists", client.StatusCode); |
495 |
} |
496 |
} |
497 |
|
498 |
} |
499 |
|
500 |
public ObjectInfo GetObjectInfo(string account, string container, string objectName) |
501 |
{ |
502 |
if (String.IsNullOrWhiteSpace(container)) |
503 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
504 |
if (String.IsNullOrWhiteSpace(objectName)) |
505 |
throw new ArgumentNullException("objectName", "The objectName property can't be empty"); |
506 |
Contract.EndContractBlock(); |
507 |
|
508 |
using (log4net.ThreadContext.Stacks["Objects"].Push("GetObjectInfo")) |
509 |
{ |
510 |
|
511 |
using (var client = new RestClient(_baseClient)) |
512 |
{ |
513 |
if (!String.IsNullOrWhiteSpace(account)) |
514 |
client.BaseAddress = GetAccountUrl(account); |
515 |
try |
516 |
{ |
517 |
client.Parameters.Clear(); |
518 |
|
519 |
client.Head(container + "/" + objectName, 3); |
520 |
|
521 |
if (client.TimedOut) |
522 |
return ObjectInfo.Empty; |
523 |
|
524 |
switch (client.StatusCode) |
525 |
{ |
526 |
case HttpStatusCode.OK: |
527 |
case HttpStatusCode.NoContent: |
528 |
var keys = client.ResponseHeaders.AllKeys.AsQueryable(); |
529 |
var tags = (from key in keys |
530 |
where key.StartsWith("X-Object-Meta-") |
531 |
let name = key.Substring(14) |
532 |
select new {Name = name, Value = client.ResponseHeaders[name]}) |
533 |
.ToDictionary(t => t.Name, t => t.Value); |
534 |
var extensions = (from key in keys |
535 |
where key.StartsWith("X-Object-") && !key.StartsWith("X-Object-Meta-") |
536 |
select new {Name = key, Value = client.ResponseHeaders[key]}) |
537 |
.ToDictionary(t => t.Name, t => t.Value); |
538 |
var info = new ObjectInfo |
539 |
{ |
540 |
Account = account, |
541 |
Container = container, |
542 |
Name = objectName, |
543 |
Hash = client.GetHeaderValue("ETag"), |
544 |
Content_Type = client.GetHeaderValue("Content-Type"), |
545 |
Bytes = Convert.ToInt64(client.GetHeaderValue("Content-Length")), |
546 |
Tags = tags, |
547 |
Last_Modified = client.LastModified, |
548 |
Extensions = extensions |
549 |
}; |
550 |
return info; |
551 |
case HttpStatusCode.NotFound: |
552 |
return ObjectInfo.Empty; |
553 |
default: |
554 |
throw new WebException( |
555 |
String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}", |
556 |
objectName, client.StatusCode)); |
557 |
} |
558 |
|
559 |
} |
560 |
catch (RetryException) |
561 |
{ |
562 |
Log.WarnFormat("[RETRY FAIL] GetObjectInfo for {0} failed."); |
563 |
return ObjectInfo.Empty; |
564 |
} |
565 |
catch (WebException e) |
566 |
{ |
567 |
Log.Error( |
568 |
String.Format("[FAIL] GetObjectInfo for {0} failed with unexpected status code {1}", |
569 |
objectName, client.StatusCode), e); |
570 |
throw; |
571 |
} |
572 |
} |
573 |
} |
574 |
|
575 |
} |
576 |
|
577 |
public void CreateFolder(string account, string container, string folder) |
578 |
{ |
579 |
if (String.IsNullOrWhiteSpace(container)) |
580 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
581 |
if (String.IsNullOrWhiteSpace(folder)) |
582 |
throw new ArgumentNullException("folder", "The folder property can't be empty"); |
583 |
Contract.EndContractBlock(); |
584 |
|
585 |
var folderUrl=String.Format("{0}/{1}",container,folder); |
586 |
using (var client = new RestClient(_baseClient)) |
587 |
{ |
588 |
if (!String.IsNullOrWhiteSpace(account)) |
589 |
client.BaseAddress = GetAccountUrl(account); |
590 |
|
591 |
client.Parameters.Clear(); |
592 |
client.Headers.Add("Content-Type", @"application/directory"); |
593 |
client.Headers.Add("Content-Length", "0"); |
594 |
client.PutWithRetry(folderUrl, 3); |
595 |
|
596 |
if (client.StatusCode != HttpStatusCode.Created && client.StatusCode != HttpStatusCode.Accepted) |
597 |
throw CreateWebException("CreateFolder", client.StatusCode); |
598 |
} |
599 |
} |
600 |
|
601 |
public ContainerInfo GetContainerInfo(string account, string container) |
602 |
{ |
603 |
if (String.IsNullOrWhiteSpace(container)) |
604 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
605 |
Contract.EndContractBlock(); |
606 |
|
607 |
using (var client = new RestClient(_baseClient)) |
608 |
{ |
609 |
if (!String.IsNullOrWhiteSpace(account)) |
610 |
client.BaseAddress = GetAccountUrl(account); |
611 |
|
612 |
client.Head(container); |
613 |
switch (client.StatusCode) |
614 |
{ |
615 |
case HttpStatusCode.OK: |
616 |
case HttpStatusCode.NoContent: |
617 |
var containerInfo = new ContainerInfo |
618 |
{ |
619 |
Account=account, |
620 |
Name = container, |
621 |
Count = |
622 |
long.Parse(client.GetHeaderValue("X-Container-Object-Count")), |
623 |
Bytes = long.Parse(client.GetHeaderValue("X-Container-Bytes-Used")), |
624 |
BlockHash = client.GetHeaderValue("X-Container-Block-Hash"), |
625 |
BlockSize=int.Parse(client.GetHeaderValue("X-Container-Block-Size")), |
626 |
Last_Modified=client.LastModified |
627 |
}; |
628 |
return containerInfo; |
629 |
case HttpStatusCode.NotFound: |
630 |
return ContainerInfo.Empty; |
631 |
default: |
632 |
throw CreateWebException("GetContainerInfo", client.StatusCode); |
633 |
} |
634 |
} |
635 |
} |
636 |
|
637 |
public void CreateContainer(string account, string container) |
638 |
{ |
639 |
if (String.IsNullOrWhiteSpace(container)) |
640 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
641 |
Contract.EndContractBlock(); |
642 |
|
643 |
using (var client = new RestClient(_baseClient)) |
644 |
{ |
645 |
if (!String.IsNullOrWhiteSpace(account)) |
646 |
client.BaseAddress = GetAccountUrl(account); |
647 |
|
648 |
client.PutWithRetry(container, 3); |
649 |
var expectedCodes = new[] {HttpStatusCode.Created, HttpStatusCode.Accepted, HttpStatusCode.OK}; |
650 |
if (!expectedCodes.Contains(client.StatusCode)) |
651 |
throw CreateWebException("CreateContainer", client.StatusCode); |
652 |
} |
653 |
} |
654 |
|
655 |
public void DeleteContainer(string account, string container) |
656 |
{ |
657 |
if (String.IsNullOrWhiteSpace(container)) |
658 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
659 |
Contract.EndContractBlock(); |
660 |
|
661 |
using (var client = new RestClient(_baseClient)) |
662 |
{ |
663 |
if (!String.IsNullOrWhiteSpace(account)) |
664 |
client.BaseAddress = GetAccountUrl(account); |
665 |
|
666 |
client.DeleteWithRetry(container, 3); |
667 |
var expectedCodes = new[] {HttpStatusCode.NotFound, HttpStatusCode.NoContent}; |
668 |
if (!expectedCodes.Contains(client.StatusCode)) |
669 |
throw CreateWebException("DeleteContainer", client.StatusCode); |
670 |
} |
671 |
|
672 |
} |
673 |
|
674 |
/// <summary> |
675 |
/// |
676 |
/// </summary> |
677 |
/// <param name="account"></param> |
678 |
/// <param name="container"></param> |
679 |
/// <param name="objectName"></param> |
680 |
/// <param name="fileName"></param> |
681 |
/// <returns></returns> |
682 |
/// <remarks>This method should have no timeout or a very long one</remarks> |
683 |
//Asynchronously download the object specified by *objectName* in a specific *container* to |
684 |
// a local file |
685 |
public Task GetObject(string account, string container, string objectName, string fileName) |
686 |
{ |
687 |
if (String.IsNullOrWhiteSpace(container)) |
688 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
689 |
if (String.IsNullOrWhiteSpace(objectName)) |
690 |
throw new ArgumentNullException("objectName", "The objectName property can't be empty"); |
691 |
Contract.EndContractBlock(); |
692 |
|
693 |
try |
694 |
{ |
695 |
//WebClient, and by extension RestClient, are not thread-safe. Create a new RestClient |
696 |
//object to avoid concurrency errors. |
697 |
// |
698 |
//Download operations take a long time therefore they have no timeout. |
699 |
var client = new RestClient(_baseClient) { Timeout = 0 }; |
700 |
if (!String.IsNullOrWhiteSpace(account)) |
701 |
client.BaseAddress = GetAccountUrl(account); |
702 |
|
703 |
//The container and objectName are relative names. They are joined with the client's |
704 |
//BaseAddress to create the object's absolute address |
705 |
var builder = client.GetAddressBuilder(container, objectName); |
706 |
var uri = builder.Uri; |
707 |
|
708 |
//Download progress is reported to the Trace log |
709 |
Log.InfoFormat("[GET] START {0}", objectName); |
710 |
client.DownloadProgressChanged += (sender, args) => |
711 |
Log.InfoFormat("[GET PROGRESS] {0} {1}% {2} of {3}", |
712 |
fileName, args.ProgressPercentage, |
713 |
args.BytesReceived, |
714 |
args.TotalBytesToReceive); |
715 |
|
716 |
|
717 |
//Start downloading the object asynchronously |
718 |
var downloadTask = client.DownloadFileTask(uri, fileName); |
719 |
|
720 |
//Once the download completes |
721 |
return downloadTask.ContinueWith(download => |
722 |
{ |
723 |
//Delete the local client object |
724 |
client.Dispose(); |
725 |
//And report failure or completion |
726 |
if (download.IsFaulted) |
727 |
{ |
728 |
Log.ErrorFormat("[GET] FAIL for {0} with \r{1}", objectName, |
729 |
download.Exception); |
730 |
} |
731 |
else |
732 |
{ |
733 |
Log.InfoFormat("[GET] END {0}", objectName); |
734 |
} |
735 |
}); |
736 |
} |
737 |
catch (Exception exc) |
738 |
{ |
739 |
Log.ErrorFormat("[GET] END {0} with {1}", objectName, exc); |
740 |
throw; |
741 |
} |
742 |
|
743 |
|
744 |
|
745 |
} |
746 |
|
747 |
public Task<IList<string>> PutHashMap(string account, string container, string objectName, TreeHash hash) |
748 |
{ |
749 |
if (String.IsNullOrWhiteSpace(container)) |
750 |
throw new ArgumentNullException("container"); |
751 |
if (String.IsNullOrWhiteSpace(objectName)) |
752 |
throw new ArgumentNullException("objectName"); |
753 |
if (hash==null) |
754 |
throw new ArgumentNullException("hash"); |
755 |
if (String.IsNullOrWhiteSpace(Token)) |
756 |
throw new InvalidOperationException("Invalid Token"); |
757 |
if (StorageUrl == null) |
758 |
throw new InvalidOperationException("Invalid Storage Url"); |
759 |
Contract.EndContractBlock(); |
760 |
|
761 |
|
762 |
//Don't use a timeout because putting the hashmap may be a long process |
763 |
var client = new RestClient(_baseClient) { Timeout = 0 }; |
764 |
if (!String.IsNullOrWhiteSpace(account)) |
765 |
client.BaseAddress = GetAccountUrl(account); |
766 |
|
767 |
//The container and objectName are relative names. They are joined with the client's |
768 |
//BaseAddress to create the object's absolute address |
769 |
var builder = client.GetAddressBuilder(container, objectName); |
770 |
builder.Query = "format=json&hashmap"; |
771 |
var uri = builder.Uri; |
772 |
|
773 |
|
774 |
//Send the tree hash as Json to the server |
775 |
client.Headers[HttpRequestHeader.ContentType] = "application/octet-stream"; |
776 |
var uploadTask=client.UploadStringTask(uri, "PUT", hash.ToJson()); |
777 |
|
778 |
|
779 |
return uploadTask.ContinueWith(t => |
780 |
{ |
781 |
|
782 |
var empty = (IList<string>)new List<string>(); |
783 |
|
784 |
|
785 |
//The server will respond either with 201-created if all blocks were already on the server |
786 |
if (client.StatusCode == HttpStatusCode.Created) |
787 |
{ |
788 |
//in which case we return an empty hash list |
789 |
return empty; |
790 |
} |
791 |
//or with a 409-conflict and return the list of missing parts |
792 |
//A 409 will cause an exception so we need to check t.IsFaulted to avoid propagating the exception |
793 |
if (t.IsFaulted) |
794 |
{ |
795 |
var ex = t.Exception.InnerException; |
796 |
var we = ex as WebException; |
797 |
var response = we.Response as HttpWebResponse; |
798 |
if (response!=null && response.StatusCode==HttpStatusCode.Conflict) |
799 |
{ |
800 |
//In case of 409 the missing parts will be in the response content |
801 |
using (var stream = response.GetResponseStream()) |
802 |
using(var reader=new StreamReader(stream)) |
803 |
{ |
804 |
//We need to cleanup the content before returning it because it contains |
805 |
//error content after the list of hashes |
806 |
var hashes = new List<string>(); |
807 |
string line=null; |
808 |
//All lines up to the first empty line are hashes |
809 |
while(!String.IsNullOrWhiteSpace(line=reader.ReadLine())) |
810 |
{ |
811 |
hashes.Add(line); |
812 |
} |
813 |
|
814 |
return hashes; |
815 |
} |
816 |
} |
817 |
else |
818 |
//Any other status code is unexpected and the exception should be rethrown |
819 |
throw ex; |
820 |
|
821 |
} |
822 |
//Any other status code is unexpected but there was no exception. We can probably continue processing |
823 |
else |
824 |
{ |
825 |
Log.WarnFormat("Unexcpected status code when putting map: {0} - {1}",client.StatusCode,client.StatusDescription); |
826 |
} |
827 |
return empty; |
828 |
}); |
829 |
|
830 |
} |
831 |
|
832 |
public Task<byte[]> GetBlock(string account, string container, Uri relativeUrl, long start, long? end) |
833 |
{ |
834 |
if (String.IsNullOrWhiteSpace(Token)) |
835 |
throw new InvalidOperationException("Invalid Token"); |
836 |
if (StorageUrl == null) |
837 |
throw new InvalidOperationException("Invalid Storage Url"); |
838 |
if (String.IsNullOrWhiteSpace(container)) |
839 |
throw new ArgumentNullException("container"); |
840 |
if (relativeUrl== null) |
841 |
throw new ArgumentNullException("relativeUrl"); |
842 |
if (end.HasValue && end<0) |
843 |
throw new ArgumentOutOfRangeException("end"); |
844 |
if (start<0) |
845 |
throw new ArgumentOutOfRangeException("start"); |
846 |
Contract.EndContractBlock(); |
847 |
|
848 |
|
849 |
//Don't use a timeout because putting the hashmap may be a long process |
850 |
var client = new RestClient(_baseClient) {Timeout = 0, RangeFrom = start, RangeTo = end}; |
851 |
if (!String.IsNullOrWhiteSpace(account)) |
852 |
client.BaseAddress = GetAccountUrl(account); |
853 |
|
854 |
var builder = client.GetAddressBuilder(container, relativeUrl.ToString()); |
855 |
var uri = builder.Uri; |
856 |
|
857 |
return client.DownloadDataTask(uri) |
858 |
.ContinueWith(t=> |
859 |
{ |
860 |
client.Dispose(); |
861 |
return t.Result; |
862 |
}); |
863 |
} |
864 |
|
865 |
|
866 |
public Task PostBlock(string account, string container, byte[] block, int offset, int count) |
867 |
{ |
868 |
if (String.IsNullOrWhiteSpace(container)) |
869 |
throw new ArgumentNullException("container"); |
870 |
if (block == null) |
871 |
throw new ArgumentNullException("block"); |
872 |
if (offset < 0 || offset >= block.Length) |
873 |
throw new ArgumentOutOfRangeException("offset"); |
874 |
if (count < 0 || count > block.Length) |
875 |
throw new ArgumentOutOfRangeException("count"); |
876 |
if (String.IsNullOrWhiteSpace(Token)) |
877 |
throw new InvalidOperationException("Invalid Token"); |
878 |
if (StorageUrl == null) |
879 |
throw new InvalidOperationException("Invalid Storage Url"); |
880 |
Contract.EndContractBlock(); |
881 |
|
882 |
|
883 |
//Don't use a timeout because putting the hashmap may be a long process |
884 |
var client = new RestClient(_baseClient) { Timeout = 0 }; |
885 |
if (!String.IsNullOrWhiteSpace(account)) |
886 |
client.BaseAddress = GetAccountUrl(account); |
887 |
|
888 |
var builder = client.GetAddressBuilder(container, ""); |
889 |
//We are doing an update |
890 |
builder.Query = "update"; |
891 |
var uri = builder.Uri; |
892 |
|
893 |
client.Headers[HttpRequestHeader.ContentType] = "application/octet-stream"; |
894 |
|
895 |
Log.InfoFormat("[BLOCK POST] START"); |
896 |
|
897 |
client.UploadProgressChanged += (sender, args) => |
898 |
Log.InfoFormat("[BLOCK POST PROGRESS] {0}% {1} of {2}", |
899 |
args.ProgressPercentage, args.BytesSent, |
900 |
args.TotalBytesToSend); |
901 |
client.UploadFileCompleted += (sender, args) => |
902 |
Log.InfoFormat("[BLOCK POST PROGRESS] Completed "); |
903 |
|
904 |
|
905 |
//Send the block |
906 |
var uploadTask = client.UploadDataTask(uri, "POST", block) |
907 |
.ContinueWith(upload => |
908 |
{ |
909 |
client.Dispose(); |
910 |
|
911 |
if (upload.IsFaulted) |
912 |
{ |
913 |
var exception = upload.Exception.InnerException; |
914 |
Log.ErrorFormat("[BLOCK POST] FAIL with \r{0}", exception); |
915 |
throw exception; |
916 |
} |
917 |
|
918 |
Log.InfoFormat("[BLOCK POST] END"); |
919 |
}); |
920 |
return uploadTask; |
921 |
} |
922 |
|
923 |
|
924 |
public Task<TreeHash> GetHashMap(string account, string container, string objectName) |
925 |
{ |
926 |
if (String.IsNullOrWhiteSpace(container)) |
927 |
throw new ArgumentNullException("container"); |
928 |
if (String.IsNullOrWhiteSpace(objectName)) |
929 |
throw new ArgumentNullException("objectName"); |
930 |
if (String.IsNullOrWhiteSpace(Token)) |
931 |
throw new InvalidOperationException("Invalid Token"); |
932 |
if (StorageUrl == null) |
933 |
throw new InvalidOperationException("Invalid Storage Url"); |
934 |
Contract.EndContractBlock(); |
935 |
|
936 |
try |
937 |
{ |
938 |
//WebClient, and by extension RestClient, are not thread-safe. Create a new RestClient |
939 |
//object to avoid concurrency errors. |
940 |
// |
941 |
//Download operations take a long time therefore they have no timeout. |
942 |
//TODO: Do we really? this is a hashmap operation, not a download |
943 |
var client = new RestClient(_baseClient) { Timeout = 0 }; |
944 |
if (!String.IsNullOrWhiteSpace(account)) |
945 |
client.BaseAddress = GetAccountUrl(account); |
946 |
|
947 |
|
948 |
//The container and objectName are relative names. They are joined with the client's |
949 |
//BaseAddress to create the object's absolute address |
950 |
var builder = client.GetAddressBuilder(container, objectName); |
951 |
builder.Query = "format=json&hashmap"; |
952 |
var uri = builder.Uri; |
953 |
|
954 |
//Start downloading the object asynchronously |
955 |
var downloadTask = client.DownloadStringTask(uri); |
956 |
|
957 |
//Once the download completes |
958 |
return downloadTask.ContinueWith(download => |
959 |
{ |
960 |
//Delete the local client object |
961 |
client.Dispose(); |
962 |
//And report failure or completion |
963 |
if (download.IsFaulted) |
964 |
{ |
965 |
Log.ErrorFormat("[GET HASH] FAIL for {0} with \r{1}", objectName, |
966 |
download.Exception); |
967 |
throw download.Exception; |
968 |
} |
969 |
|
970 |
//The server will return an empty string if the file is empty |
971 |
var json = download.Result; |
972 |
var treeHash = TreeHash.Parse(json); |
973 |
Log.InfoFormat("[GET HASH] END {0}", objectName); |
974 |
return treeHash; |
975 |
}); |
976 |
} |
977 |
catch (Exception exc) |
978 |
{ |
979 |
Log.ErrorFormat("[GET HASH] END {0} with {1}", objectName, exc); |
980 |
throw; |
981 |
} |
982 |
|
983 |
|
984 |
|
985 |
} |
986 |
|
987 |
|
988 |
/// <summary> |
989 |
/// |
990 |
/// </summary> |
991 |
/// <param name="account"></param> |
992 |
/// <param name="container"></param> |
993 |
/// <param name="objectName"></param> |
994 |
/// <param name="fileName"></param> |
995 |
/// <param name="hash">Optional hash value for the file. If no hash is provided, the method calculates a new hash</param> |
996 |
/// <remarks>>This method should have no timeout or a very long one</remarks> |
997 |
public Task PutObject(string account, string container, string objectName, string fileName, string hash = null) |
998 |
{ |
999 |
if (String.IsNullOrWhiteSpace(container)) |
1000 |
throw new ArgumentNullException("container", "The container property can't be empty"); |
1001 |
if (String.IsNullOrWhiteSpace(objectName)) |
1002 |
throw new ArgumentNullException("objectName", "The objectName property can't be empty"); |
1003 |
if (String.IsNullOrWhiteSpace(fileName)) |
1004 |
throw new ArgumentNullException("fileName", "The fileName property can't be empty"); |
1005 |
if (!File.Exists(fileName)) |
1006 |
throw new FileNotFoundException("The file does not exist",fileName); |
1007 |
Contract.EndContractBlock(); |
1008 |
|
1009 |
try |
1010 |
{ |
1011 |
|
1012 |
var client = new RestClient(_baseClient){Timeout=0}; |
1013 |
if (!String.IsNullOrWhiteSpace(account)) |
1014 |
client.BaseAddress = GetAccountUrl(account); |
1015 |
|
1016 |
var builder = client.GetAddressBuilder(container, objectName); |
1017 |
var uri = builder.Uri; |
1018 |
|
1019 |
string etag = hash ?? CalculateHash(fileName); |
1020 |
|
1021 |
client.Headers.Add("Content-Type", "application/octet-stream"); |
1022 |
client.Headers.Add("ETag", etag); |
1023 |
|
1024 |
|
1025 |
Log.InfoFormat("[PUT] START {0}", objectName); |
1026 |
client.UploadProgressChanged += (sender, args) => |
1027 |
{ |
1028 |
using (log4net.ThreadContext.Stacks["PUT"].Push("Progress")) |
1029 |
{ |
1030 |
Log.InfoFormat("{0} {1}% {2} of {3}", fileName, args.ProgressPercentage, |
1031 |
args.BytesSent, args.TotalBytesToSend); |
1032 |
} |
1033 |
}; |
1034 |
|
1035 |
client.UploadFileCompleted += (sender, args) => |
1036 |
{ |
1037 |
using (log4net.ThreadContext.Stacks["PUT"].Push("Progress")) |
1038 |
{ |
1039 |
Log.InfoFormat("Completed {0}", fileName); |
1040 |
} |
1041 |
}; |
1042 |
return client.UploadFileTask(uri, "PUT", fileName) |
1043 |
.ContinueWith(upload=> |
1044 |
{ |
1045 |
client.Dispose(); |
1046 |
|
1047 |
if (upload.IsFaulted) |
1048 |
{ |
1049 |
var exc = upload.Exception.InnerException; |
1050 |
Log.ErrorFormat("[PUT] FAIL for {0} with \r{1}",objectName,exc); |
1051 |
throw exc; |
1052 |
} |
1053 |
else |
1054 |
Log.InfoFormat("[PUT] END {0}", objectName); |
1055 |
}); |
1056 |
} |
1057 |
catch (Exception exc) |
1058 |
{ |
1059 |
Log.ErrorFormat("[PUT] END {0} with {1}", objectName, exc); |
1060 |
throw; |
1061 |
} |
1062 |
|
1063 |
} |
1064 |
|
1065 |
|
1066 |
private static string CalculateHash(string fileName) |
1067 |
{ |
1068 |
Contract.Requires(!String.IsNullOrWhiteSpace(fileName)); |
1069 |
Contract.EndContractBlock(); |
1070 |
|
1071 |
string hash; |
1072 |
using (var hasher = MD5.Create()) |
1073 |
using(var stream=File.OpenRead(fileName)) |
1074 |
{ |
1075 |
var hashBuilder=new StringBuilder(); |
1076 |
foreach (byte b in hasher.ComputeHash(stream)) |
1077 |
hashBuilder.Append(b.ToString("x2").ToLower()); |
1078 |
hash = hashBuilder.ToString(); |
1079 |
} |
1080 |
return hash; |
1081 |
} |
1082 |
|
1083 |
public void MoveObject(string account, string sourceContainer, string oldObjectName, string targetContainer, string newObjectName) |
1084 |
{ |
1085 |
if (String.IsNullOrWhiteSpace(sourceContainer)) |
1086 |
throw new ArgumentNullException("sourceContainer", "The container property can't be empty"); |
1087 |
if (String.IsNullOrWhiteSpace(oldObjectName)) |
1088 |
throw new ArgumentNullException("oldObjectName", "The oldObjectName property can't be empty"); |
1089 |
if (String.IsNullOrWhiteSpace(targetContainer)) |
1090 |
throw new ArgumentNullException("targetContainer", "The container property can't be empty"); |
1091 |
if (String.IsNullOrWhiteSpace(newObjectName)) |
1092 |
throw new ArgumentNullException("newObjectName", "The newObjectName property can't be empty"); |
1093 |
Contract.EndContractBlock(); |
1094 |
|
1095 |
var targetUrl = targetContainer + "/" + newObjectName; |
1096 |
var sourceUrl = String.Format("/{0}/{1}", sourceContainer, oldObjectName); |
1097 |
|
1098 |
using (var client = new RestClient(_baseClient)) |
1099 |
{ |
1100 |
if (!String.IsNullOrWhiteSpace(account)) |
1101 |
client.BaseAddress = GetAccountUrl(account); |
1102 |
|
1103 |
client.Headers.Add("X-Move-From", sourceUrl); |
1104 |
client.PutWithRetry(targetUrl, 3); |
1105 |
|
1106 |
var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created}; |
1107 |
if (!expectedCodes.Contains(client.StatusCode)) |
1108 |
throw CreateWebException("MoveObject", client.StatusCode); |
1109 |
} |
1110 |
} |
1111 |
|
1112 |
public void DeleteObject(string account, string sourceContainer, string objectName) |
1113 |
{ |
1114 |
if (String.IsNullOrWhiteSpace(sourceContainer)) |
1115 |
throw new ArgumentNullException("sourceContainer", "The container property can't be empty"); |
1116 |
if (String.IsNullOrWhiteSpace(objectName)) |
1117 |
throw new ArgumentNullException("objectName", "The oldObjectName property can't be empty"); |
1118 |
Contract.EndContractBlock(); |
1119 |
|
1120 |
var targetUrl = FolderConstants.TrashContainer + "/" + objectName; |
1121 |
var sourceUrl = String.Format("/{0}/{1}", sourceContainer, objectName); |
1122 |
|
1123 |
using (var client = new RestClient(_baseClient)) |
1124 |
{ |
1125 |
if (!String.IsNullOrWhiteSpace(account)) |
1126 |
client.BaseAddress = GetAccountUrl(account); |
1127 |
|
1128 |
client.Headers.Add("X-Move-From", sourceUrl); |
1129 |
client.AllowedStatusCodes.Add(HttpStatusCode.NotFound); |
1130 |
client.PutWithRetry(targetUrl, 3); |
1131 |
|
1132 |
var expectedCodes = new[] {HttpStatusCode.OK, HttpStatusCode.NoContent, HttpStatusCode.Created,HttpStatusCode.NotFound}; |
1133 |
if (!expectedCodes.Contains(client.StatusCode)) |
1134 |
throw CreateWebException("DeleteObject", client.StatusCode); |
1135 |
} |
1136 |
} |
1137 |
|
1138 |
|
1139 |
private static WebException CreateWebException(string operation, HttpStatusCode statusCode) |
1140 |
{ |
1141 |
return new WebException(String.Format("{0} failed with unexpected status code {1}", operation, statusCode)); |
1142 |
} |
1143 |
|
1144 |
|
1145 |
} |
1146 |
|
1147 |
public class ShareAccountInfo |
1148 |
{ |
1149 |
public DateTime? last_modified { get; set; } |
1150 |
public string name { get; set; } |
1151 |
} |
1152 |
} |