root / trunk / Pithos.Core / PithosMonitor.cs @ 8f44fd3a
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#region |
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/* ----------------------------------------------------------------------- |
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* <copyright file="PithosMonitor.cs" company="GRNet"> |
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* |
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* Copyright 2011-2012 GRNET S.A. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* |
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* The views and conclusions contained in the software and |
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* documentation are those of the authors and should not be |
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* interpreted as representing official policies, either expressed |
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* or implied, of GRNET S.A. |
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* </copyright> |
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* ----------------------------------------------------------------------- |
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*/ |
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#endregion |
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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.Reflection; |
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using System.Threading; |
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using System.Threading.Tasks; |
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using Pithos.Core.Agents; |
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using Pithos.Interfaces; |
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using Pithos.Network; |
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using log4net; |
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|
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namespace Pithos.Core |
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{ |
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[Export(typeof(PithosMonitor))] |
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public class PithosMonitor:IDisposable |
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{ |
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private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
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|
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private int _blockSize; |
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private string _blockHash; |
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|
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[Import] |
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public IPithosSettings Settings{get;set;} |
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|
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private IStatusKeeper _statusKeeper; |
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|
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[Import] |
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public IStatusKeeper StatusKeeper |
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{ |
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get { return _statusKeeper; } |
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set |
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{ |
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_statusKeeper = value; |
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FileAgent.StatusKeeper = value; |
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} |
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} |
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|
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|
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private IPithosWorkflow _workflow; |
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|
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[Import] |
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public IPithosWorkflow Workflow |
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{ |
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get { return _workflow; } |
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set |
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{ |
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_workflow = value; |
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FileAgent.Workflow = value; |
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} |
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} |
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|
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public ICloudClient CloudClient { get; set; } |
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|
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public IStatusNotification StatusNotification { get; set; } |
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|
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//[Import] |
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public FileAgent FileAgent { get; private set; } |
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|
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private WorkflowAgent _workflowAgent; |
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|
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[Import] |
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public WorkflowAgent WorkflowAgent |
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{ |
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get { return _workflowAgent; } |
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set |
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{ |
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_workflowAgent = value; |
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FileAgent.WorkflowAgent = value; |
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} |
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} |
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|
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[Import] |
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public NetworkAgent NetworkAgent { get; set; } |
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[Import] |
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public PollAgent PollAgent { get; set; } |
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|
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public string UserName { get; set; } |
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private string _apiKey; |
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public string ApiKey |
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{ |
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get { return _apiKey; } |
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set |
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{ |
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_apiKey = value; |
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if (_accountInfo != null) |
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_accountInfo.Token = value; |
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} |
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} |
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|
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private AccountInfo _accountInfo; |
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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 bool Pause |
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{ |
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get { return FileAgent.Pause; } |
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set |
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{ |
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FileAgent.Pause = value; |
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} |
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} |
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|
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private string _rootPath; |
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public string RootPath |
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{ |
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get { return _rootPath; } |
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set |
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{ |
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_rootPath = String.IsNullOrWhiteSpace(value) |
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? String.Empty |
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: value.ToLower(); |
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} |
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} |
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|
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|
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CancellationTokenSource _cancellationSource; |
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|
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public PithosMonitor() |
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{ |
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FileAgent = new FileAgent(); |
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} |
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private bool _started; |
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|
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public void Start() |
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{ |
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if (String.IsNullOrWhiteSpace(ApiKey)) |
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throw new InvalidOperationException("The ApiKey is empty"); |
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if (String.IsNullOrWhiteSpace(UserName)) |
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throw new InvalidOperationException("The UserName is empty"); |
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if (String.IsNullOrWhiteSpace(AuthenticationUrl)) |
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throw new InvalidOperationException("The Authentication url is empty"); |
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Contract.EndContractBlock(); |
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|
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//If the account doesn't have a valid path, don't start monitoring but don't throw either |
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if (String.IsNullOrWhiteSpace(RootPath)) |
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//TODO; Warn user? |
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return; |
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|
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WorkflowAgent.StatusNotification = StatusNotification; |
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|
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StatusNotification.NotifyChange("Starting"); |
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if (_started) |
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{ |
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if (!_cancellationSource.IsCancellationRequested) |
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return; |
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} |
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_cancellationSource = new CancellationTokenSource(); |
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|
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lock (this) |
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{ |
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CloudClient = new CloudFilesClient(UserName, ApiKey) |
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{UsePithos = true, AuthenticationUrl = AuthenticationUrl}; |
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_accountInfo = CloudClient.Authenticate(); |
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} |
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_accountInfo.SiteUri = AuthenticationUrl; |
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_accountInfo.AccountPath = RootPath; |
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|
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|
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var pithosFolder = Path.Combine(RootPath, FolderConstants.PithosContainer); |
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if (!Directory.Exists(pithosFolder)) |
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Directory.CreateDirectory(pithosFolder); |
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//Create the cache folder and ensure it is hidden |
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CreateHiddenFolder(RootPath, FolderConstants.CacheFolder); |
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|
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var policy=CloudClient.GetAccountPolicies(_accountInfo); |
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|
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StatusNotification.NotifyAccount(policy); |
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EnsurePithosContainers(); |
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|
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StatusKeeper.BlockHash = _blockHash; |
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StatusKeeper.BlockSize = _blockSize; |
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|
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StatusKeeper.StartProcessing(_cancellationSource.Token); |
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IndexLocalFiles(); |
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//Extract the URIs from the string collection |
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var settings = Settings.Accounts.First(s => s.AccountKey == _accountInfo.AccountKey ); |
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var selectiveUrls=settings.SelectiveFolders.Cast<string>().Select(url => new Uri(url)).ToArray(); |
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|
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SetSelectivePaths(selectiveUrls,null,null); |
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|
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StartWatcherAgent(); |
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|
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StartNetworkAgent(); |
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|
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WorkflowAgent.RestartInterruptedFiles(_accountInfo); |
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_started = true; |
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} |
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|
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private void EnsurePithosContainers() |
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{ |
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|
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//Create the two default containers if they are missing |
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var pithosContainers = new List<string>{ FolderConstants.TrashContainer,FolderConstants.PithosContainer}; |
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foreach (var container in pithosContainers) |
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{ |
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var info=CloudClient.GetContainerInfo(UserName, container); |
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if (info == ContainerInfo.Empty) |
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{ |
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CloudClient.CreateContainer(UserName, container); |
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info = CloudClient.GetContainerInfo(UserName, container); |
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} |
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_blockSize = info.BlockSize; |
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_blockHash = info.BlockHash; |
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_accountInfo.BlockSize = _blockSize; |
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_accountInfo.BlockHash = _blockHash; |
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} |
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} |
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|
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public string AuthenticationUrl { get; set; } |
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|
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private void IndexLocalFiles() |
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{ |
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using (ThreadContext.Stacks["Operation"].Push("Indexing local files")) |
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{ |
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|
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try |
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{ |
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//StatusNotification.NotifyChange("Indexing Local Files"); |
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Log.Info("Start local indexing"); |
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StatusNotification.SetPithosStatus(PithosStatus.LocalSyncing,"Indexing Local Files"); |
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|
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var cachePath = Path.Combine(RootPath, FolderConstants.CacheFolder); |
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var directory = new DirectoryInfo(RootPath); |
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var files = |
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from file in directory.EnumerateFiles("*", SearchOption.AllDirectories) |
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where !file.FullName.StartsWith(cachePath, StringComparison.InvariantCultureIgnoreCase) && |
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!file.Extension.Equals("ignore", StringComparison.InvariantCultureIgnoreCase) |
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select file; |
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StatusKeeper.ProcessExistingFiles(files); |
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|
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} |
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catch (Exception exc) |
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{ |
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Log.Error("[ERROR]", exc); |
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} |
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finally |
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{ |
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Log.Info("[END]"); |
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} |
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StatusNotification.SetPithosStatus(PithosStatus.LocalComplete,"Indexing Completed"); |
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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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|
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/* private void StartWorkflowAgent() |
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{ |
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WorkflowAgent.StatusNotification = StatusNotification; |
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|
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/* //On Vista and up we can check for a network connection |
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bool connected=Environment.OSVersion.Version.Major < 6 || NetworkListManager.IsConnectedToInternet; |
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//If we are not connected retry later |
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if (!connected) |
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{ |
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Task.Factory.StartNewDelayed(10000, StartWorkflowAgent); |
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return; |
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}#1# |
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|
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try |
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{ |
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WorkflowAgent.Start(); |
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} |
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catch (Exception) |
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{ |
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//Faild to authenticate due to network or account error |
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//Retry after a while |
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Task.Factory.StartNewDelayed(10000, StartWorkflowAgent); |
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} |
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}*/ |
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|
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|
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private void StartNetworkAgent() |
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{ |
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NetworkAgent.StatusNotification = StatusNotification; |
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|
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//TODO: The Network and Poll agents are not account specific |
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//They should be moved outside PithosMonitor |
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NetworkAgent.Start(); |
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|
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PollAgent.AddAccount(_accountInfo); |
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|
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PollAgent.StatusNotification = StatusNotification; |
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|
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PollAgent.PollRemoteFiles(); |
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} |
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|
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//Make sure a hidden cache folder exists to store partial downloads |
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private static void CreateHiddenFolder(string rootPath, string folderName) |
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{ |
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if (String.IsNullOrWhiteSpace(rootPath)) |
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throw new ArgumentNullException("rootPath"); |
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if (!Path.IsPathRooted(rootPath)) |
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throw new ArgumentException("rootPath"); |
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if (String.IsNullOrWhiteSpace(folderName)) |
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throw new ArgumentNullException("folderName"); |
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Contract.EndContractBlock(); |
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|
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var folder = Path.Combine(rootPath, folderName); |
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if (!Directory.Exists(folder)) |
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{ |
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var info = Directory.CreateDirectory(folder); |
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info.Attributes |= FileAttributes.Hidden; |
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|
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Log.InfoFormat("Created cache Folder: {0}", folder); |
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} |
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else |
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{ |
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var info = new DirectoryInfo(folder); |
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if ((info.Attributes & FileAttributes.Hidden) == 0) |
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{ |
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info.Attributes |= FileAttributes.Hidden; |
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Log.InfoFormat("Reset cache folder to hidden: {0}", folder); |
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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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|
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private void StartWatcherAgent() |
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{ |
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if (Log.IsDebugEnabled) |
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Log.DebugFormat("Start Folder Monitoring [{0}]",RootPath); |
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|
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AgentLocator<FileAgent>.Register(FileAgent,RootPath); |
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|
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FileAgent.IdleTimeout = Settings.FileIdleTimeout; |
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FileAgent.StatusKeeper = StatusKeeper; |
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FileAgent.StatusNotification = StatusNotification; |
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FileAgent.Workflow = Workflow; |
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FileAgent.CachePath = Path.Combine(RootPath, FolderConstants.CacheFolder); |
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FileAgent.Start(_accountInfo, RootPath); |
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} |
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|
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public void Stop() |
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{ |
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AgentLocator<FileAgent>.Remove(RootPath); |
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|
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if (FileAgent!=null) |
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FileAgent.Stop(); |
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FileAgent = null; |
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} |
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|
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|
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~PithosMonitor() |
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{ |
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Dispose(false); |
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} |
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|
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public void Dispose() |
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{ |
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Dispose(true); |
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GC.SuppressFinalize(this); |
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} |
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|
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protected virtual void Dispose(bool disposing) |
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{ |
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if (disposing) |
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{ |
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Stop(); |
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} |
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} |
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|
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|
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public void MoveFileStates(string oldPath, string newPath) |
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{ |
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if (String.IsNullOrWhiteSpace(oldPath)) |
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throw new ArgumentNullException("oldPath"); |
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if (!Path.IsPathRooted(oldPath)) |
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throw new ArgumentException("oldPath must be an absolute path","oldPath"); |
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if (string.IsNullOrWhiteSpace(newPath)) |
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throw new ArgumentNullException("newPath"); |
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if (!Path.IsPathRooted(newPath)) |
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throw new ArgumentException("newPath must be an absolute path","newPath"); |
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Contract.EndContractBlock(); |
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|
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StatusKeeper.ChangeRoots(oldPath, newPath); |
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} |
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|
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public void SetSelectivePaths(Uri[] uris,Uri[] added, Uri[] removed) |
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{ |
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//Convert the uris to paths |
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var selectivePaths = UrisToFilePaths(uris); |
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|
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FileAgent.SelectivePaths=selectivePaths; |
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WorkflowAgent.SelectivePaths = selectivePaths; |
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PollAgent.SetSyncUris(_accountInfo.AccountKey,uris); |
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|
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var removedPaths = UrisToFilePaths(removed); |
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UnversionSelectivePaths(removedPaths); |
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|
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} |
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|
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/// <summary> |
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/// Mark all unselected paths as Unversioned |
445 |
/// </summary> |
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/// <param name="removed"></param> |
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private void UnversionSelectivePaths(List<string> removed) |
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{ |
449 |
if (removed == null) |
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return; |
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|
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//Ensure we remove any file state below the deleted folders |
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FileState.UnversionPaths(removed); |
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} |
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|
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|
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/// <summary> |
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/// Return a list of absolute filepaths from a list of Uris |
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/// </summary> |
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/// <param name="uris"></param> |
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/// <returns></returns> |
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private List<string> UrisToFilePaths(IEnumerable<Uri> uris) |
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{ |
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if (uris == null) |
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return new List<string>(); |
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|
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var own = (from uri in uris |
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where uri.ToString().StartsWith(_accountInfo.StorageUri.ToString()) |
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let relativePath = _accountInfo.StorageUri.MakeRelativeUri(uri).RelativeUriToFilePath() |
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//Trim the account name |
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select Path.Combine(RootPath, relativePath.After(_accountInfo.UserName + '\\'))).ToList(); |
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var others= (from uri in uris |
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where !uri.ToString().StartsWith(_accountInfo.StorageUri.ToString()) |
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let relativePath = _accountInfo.StorageUri.MakeRelativeUri(uri).RelativeUriToFilePath() |
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//Trim the account name |
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select Path.Combine(RootPath,"others-shared", relativePath)).ToList(); |
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return own.Union(others).ToList(); |
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} |
479 |
|
480 |
|
481 |
public ObjectInfo GetObjectInfo(string filePath) |
482 |
{ |
483 |
if (String.IsNullOrWhiteSpace(filePath)) |
484 |
throw new ArgumentNullException("filePath"); |
485 |
Contract.EndContractBlock(); |
486 |
|
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var file=new FileInfo(filePath); |
488 |
string relativeUrl;//=file.AsRelativeUrlTo(this.RootPath); |
489 |
var relativePath = file.AsRelativeTo(RootPath); |
490 |
|
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string accountName,container; |
492 |
|
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var parts=relativePath.Split('\\'); |
494 |
|
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var accountInfo = _accountInfo; |
496 |
if (relativePath.StartsWith(FolderConstants.OthersFolder)) |
497 |
{ |
498 |
accountName = parts[1]; |
499 |
container = parts[2]; |
500 |
relativeUrl = String.Join("/", parts.Splice(3)); |
501 |
//Create the root URL for the target account |
502 |
var oldName = UserName; |
503 |
var absoluteUri = _accountInfo.StorageUri.AbsoluteUri; |
504 |
var nameIndex=absoluteUri.IndexOf(oldName, StringComparison.Ordinal); |
505 |
var root=absoluteUri.Substring(0, nameIndex); |
506 |
|
507 |
accountInfo = new AccountInfo |
508 |
{ |
509 |
UserName = accountName, |
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AccountPath = Path.Combine(accountInfo.AccountPath, parts[0], parts[1]), |
511 |
StorageUri = new Uri(root + accountName), |
512 |
BlockHash=accountInfo.BlockHash, |
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BlockSize=accountInfo.BlockSize, |
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Token=accountInfo.Token |
515 |
}; |
516 |
} |
517 |
else |
518 |
{ |
519 |
accountName = UserName; |
520 |
container = parts[0]; |
521 |
relativeUrl = String.Join("/", parts.Splice(1)); |
522 |
} |
523 |
|
524 |
var client = new CloudFilesClient(accountInfo); |
525 |
var objectInfo=client.GetObjectInfo(accountName, container, relativeUrl); |
526 |
return objectInfo; |
527 |
} |
528 |
|
529 |
public Task<ContainerInfo> GetContainerInfo(string filePath) |
530 |
{ |
531 |
if (String.IsNullOrWhiteSpace(filePath)) |
532 |
throw new ArgumentNullException("filePath"); |
533 |
Contract.EndContractBlock(); |
534 |
|
535 |
var file=new FileInfo(filePath); |
536 |
var relativePath = file.AsRelativeTo(RootPath); |
537 |
|
538 |
string accountName,container; |
539 |
|
540 |
var parts=relativePath.Split('\\'); |
541 |
|
542 |
var accountInfo = _accountInfo; |
543 |
if (relativePath.StartsWith(FolderConstants.OthersFolder)) |
544 |
{ |
545 |
accountName = parts[1]; |
546 |
container = parts[2]; |
547 |
//Create the root URL for the target account |
548 |
var oldName = UserName; |
549 |
var absoluteUri = _accountInfo.StorageUri.AbsoluteUri; |
550 |
var nameIndex=absoluteUri.IndexOf(oldName, StringComparison.Ordinal); |
551 |
var root=absoluteUri.Substring(0, nameIndex); |
552 |
|
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accountInfo = new AccountInfo |
554 |
{ |
555 |
UserName = accountName, |
556 |
AccountPath = Path.Combine(accountInfo.AccountPath, parts[0], parts[1]), |
557 |
StorageUri = new Uri(root + accountName), |
558 |
BlockHash=accountInfo.BlockHash, |
559 |
BlockSize=accountInfo.BlockSize, |
560 |
Token=accountInfo.Token |
561 |
}; |
562 |
} |
563 |
else |
564 |
{ |
565 |
accountName = UserName; |
566 |
container = parts[0]; |
567 |
} |
568 |
|
569 |
return Task.Factory.StartNew(() => |
570 |
{ |
571 |
var client = new CloudFilesClient(accountInfo); |
572 |
var containerInfo = client.GetContainerInfo(accountName, container); |
573 |
return containerInfo; |
574 |
}); |
575 |
} |
576 |
} |
577 |
} |