root / trunk / Pithos.Core / FileState.cs @ 159098f7
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#region |
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/* ----------------------------------------------------------------------- |
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* <copyright file="FileState.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.Diagnostics.Contracts; |
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using System.IO; |
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using System.Reflection; |
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using System.Threading.Tasks; |
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using Castle.ActiveRecord; |
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using Castle.ActiveRecord.Framework; |
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using Castle.ActiveRecord.Queries; |
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using NHibernate.Criterion; |
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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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using System; |
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using System.Collections.Generic; |
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|
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/// <summary> |
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/// TODO: Update summary. |
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/// </summary> |
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[ActiveRecord] |
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public class FileState : ActiveRecordLinqBase<FileState> |
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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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|
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private IList<FileTag> _tags = new List<FileTag>(); |
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|
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[PrimaryKey(PrimaryKeyType.Guid)] |
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public Guid Id { get; set; } |
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|
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|
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//[Property(Unique = true, UniqueKey = "IX_FileState_ObjectID")] |
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[Property] |
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public string ObjectID { get; set; } |
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|
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[Property(Unique = true, UniqueKey = "IX_FileState_FilePath")] |
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public string FilePath { get; set; } |
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|
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[Property] |
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public FileOverlayStatus OverlayStatus { get; set; } |
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|
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[Property] |
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public FileStatus FileStatus { get; set; } |
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|
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[Property] |
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public string ConflictReason { get; set; } |
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|
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private string _checksum; |
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|
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/// <summary> |
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/// The tophash value of the file, calculated by using a Merkle hash with the SHA256 algorithm |
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/// </summary> |
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/// <remarks> |
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/// The SHA256 algorithm is substantially more expenive than other algorithms. |
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/// Recalculating the Checksum should be avoided whenever possible. |
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/// </remarks> |
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[Property] |
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public string Checksum |
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{ |
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get |
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{ |
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return _checksum; |
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} |
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set |
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{ |
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_checksum = value; |
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} |
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} |
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|
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private string _shortHash; |
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|
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/// <summary> |
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/// An easy to calcualte hash over the entire file, used to detect file changes |
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/// </summary> |
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/// <remarks>The algorithm used to calculate this hash should be cheap</remarks> |
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[Property(NotNull=true,Default="")] |
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public string ShortHash |
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{ |
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get |
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{ |
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return _shortHash; |
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} |
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set |
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{ |
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_shortHash = value; |
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} |
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} |
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|
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|
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[Property] |
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public long? Version { get; set; } |
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|
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[Property] |
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public DateTime? VersionTimeStamp { get; set; } |
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|
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|
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[Property] |
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public bool IsShared { get; set; } |
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|
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[Property] |
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public string SharedBy { get; set; } |
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|
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[Property] |
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public bool ShareWrite { get; set; } |
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|
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[Property] |
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public bool IsFolder{ get; set; } |
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|
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[HasMany(Cascade = ManyRelationCascadeEnum.AllDeleteOrphan, Lazy = true, Inverse = true)] |
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public IList<FileTag> Tags |
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{ |
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get { return _tags; } |
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set { _tags = value; } |
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} |
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|
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[Property] |
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public DateTime Modified { get; set; } |
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|
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|
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public FileSystemInfo GetFileSystemInfo() |
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{ |
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if (String.IsNullOrWhiteSpace(FilePath)) |
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throw new InvalidOperationException(); |
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Contract.EndContractBlock(); |
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|
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return Directory.Exists(FilePath) ? |
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(FileSystemInfo)new DirectoryInfo(FilePath) |
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: new FileInfo(FilePath); |
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} |
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|
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public string GetRelativeUrl(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.EndContractBlock(); |
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|
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var fsi=GetFileSystemInfo(); |
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return fsi.AsRelativeUrlTo(accountInfo.AccountPath); |
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} |
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/*public static FileState FindByFilePath(string absolutePath) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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try |
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{ |
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|
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|
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|
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return Queryable.FirstOrDefault(s => s.FilePath == absolutePath); |
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} |
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catch (Exception ex) |
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{ |
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Log.Error(ex.ToString()); |
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throw; |
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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 static void DeleteByFilePath(string absolutePath) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlDelete = "delete FileState where FilePath = :path"; |
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var deletedEntities = session.CreateQuery(hqlDelete) |
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.SetString("path", absolutePath) |
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.ExecuteUpdate(); |
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return deletedEntities; |
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}, null); |
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|
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}*/ |
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|
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public static void StoreFileStatus(string absolutePath, FileStatus newStatus) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = "update FileState set FileStatus= :status where FilePath = :path "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetString("path", absolutePath) |
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.SetEnum("status", newStatus) |
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.ExecuteUpdate(); |
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if (updatedEntities == 0) |
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{ |
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var newState = new FileState |
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{ |
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FilePath = absolutePath, |
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Id = Guid.NewGuid(), |
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FileStatus = newStatus, |
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IsFolder=Directory.Exists(absolutePath) |
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}; |
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newState.CreateAndFlush(); |
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} |
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return null; |
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}, null); |
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|
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} |
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|
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/*public static void StoreOverlayStatus(string absolutePath, FileOverlayStatus newStatus) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = |
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"update FileState set OverlayStatus= :status where FilePath = :path "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetString("path", absolutePath) |
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.SetEnum("status", newStatus) |
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.ExecuteUpdate(); |
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if (updatedEntities == 0) |
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{ |
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var newState = new FileState |
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{ |
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FilePath = absolutePath, |
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Id = Guid.NewGuid(), |
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OverlayStatus = newStatus, |
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ShortHash = String.Empty, |
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IsFolder=Directory.Exists(absolutePath) |
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}; |
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newState.CreateAndFlush(); |
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} |
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return null; |
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}, null); |
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|
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} |
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*/ |
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public static void StoreOverlayStatus(string absolutePath, FileOverlayStatus newStatus,string shortHash) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = |
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"update FileState set OverlayStatus= :status where FilePath = :path "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetString("path", absolutePath) |
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.SetEnum("status", newStatus) |
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.ExecuteUpdate(); |
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if (updatedEntities == 0) |
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{ |
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var newState = new FileState |
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{ |
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FilePath = absolutePath, |
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Id = Guid.NewGuid(), |
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OverlayStatus = newStatus, |
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ShortHash = shortHash??String.Empty, |
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IsFolder=Directory.Exists(absolutePath) |
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}; |
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newState.CreateAndFlush(); |
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} |
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return null; |
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}, null); |
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|
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} |
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|
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/* |
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public static void UpdateStatus(string absolutePath, FileStatus fileStatus, FileOverlayStatus overlayStatus) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = |
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"update FileState set OverlayStatus= :overlayStatus, FileStatus= :fileStatus where FilePath = :path "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetString("path", absolutePath) |
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.SetEnum("fileStatus", fileStatus) |
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.SetEnum("overlayStatus", overlayStatus) |
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.ExecuteUpdate(); |
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return updatedEntities; |
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}, null); |
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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 static void UpdateStatus(string absolutePath, FileStatus fileStatus) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = |
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"update FileState set FileStatus= :fileStatus where FilePath = :path "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetString("path", absolutePath) |
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.SetEnum("fileStatus", fileStatus) |
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.ExecuteUpdate(); |
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return updatedEntities; |
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}, null); |
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|
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} |
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|
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*/ |
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public static void RenameState(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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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = |
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"update FileState set FilePath= :newPath where FilePath = :oldPath "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetString("oldPath", oldPath) |
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.SetString("newPath", newPath) |
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.ExecuteUpdate(); |
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return updatedEntities; |
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}, null); |
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|
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} |
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|
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/* public static void UpdateStatus(Guid id, FileStatus fileStatus) |
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{ |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = |
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"update FileState set FileStatus= :fileStatus where Id = :id "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetGuid("id", id) |
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.SetEnum("fileStatus", fileStatus) |
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.ExecuteUpdate(); |
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return updatedEntities; |
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}, null); |
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}*/ |
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|
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public static void UpdateChecksum(string absolutePath, string shortHash, string checksum) |
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{ |
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if (string.IsNullOrWhiteSpace(absolutePath)) |
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throw new ArgumentNullException("absolutePath"); |
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Contract.EndContractBlock(); |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = "update FileState set Checksum= :checksum,ShortHash=:shortHash where FilePath = :path "; |
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var updatedEntities = session.CreateQuery(hqlUpdate) |
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.SetString("path", absolutePath) |
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.SetString("checksum", checksum) |
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.SetString("shortHash", shortHash) |
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.ExecuteUpdate(); |
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return updatedEntities; |
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}, null); |
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|
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} |
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|
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public static void ChangeRootPath(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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//Ensure the paths end with the same character |
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if (!oldPath.EndsWith("\\")) |
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oldPath = oldPath + "\\"; |
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if (!newPath.EndsWith("\\")) |
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newPath = newPath + "\\"; |
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|
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ExecuteWithRetry((session, instance) => |
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{ |
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const string hqlUpdate = |
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"update FileState set FilePath = replace(FilePath,:oldPath,:newPath) where FilePath like :oldPath || '%' "; |
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var renames = session.CreateQuery(hqlUpdate) |
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.SetString("oldPath", oldPath) |
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.SetString("newPath", newPath) |
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.ExecuteUpdate(); |
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return renames; |
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}, null); |
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} |
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|
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public static FileState CreateFor(FileSystemInfo info) |
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{ |
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if(info==null) |
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throw new ArgumentNullException("info"); |
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Contract.EndContractBlock(); |
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|
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if (info is DirectoryInfo) |
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return new FileState |
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{ |
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FilePath = info.FullName, |
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OverlayStatus = FileOverlayStatus.Unversioned, |
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FileStatus = FileStatus.Created, |
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ShortHash=String.Empty, |
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Id = Guid.NewGuid() |
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}; |
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|
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|
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var shortHash = ((FileInfo)info).ComputeShortHash(); |
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var fileState = new FileState |
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{ |
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FilePath = info.FullName, |
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OverlayStatus = FileOverlayStatus.Unversioned, |
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FileStatus = FileStatus.Created, |
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ShortHash=shortHash, |
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Id = Guid.NewGuid() |
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}; |
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return fileState; |
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} |
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|
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|
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private static void ExecuteWithRetry(NHibernateDelegate call, object state) |
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{ |
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int retries = 3; |
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while (retries > 0) |
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try |
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{ |
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using (new SessionScope()) |
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{ |
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Execute(call, state); |
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return; |
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} |
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} |
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catch (ActiveRecordException ) |
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{ |
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retries--; |
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if (retries <= 0) |
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throw; |
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} |
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} |
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|
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/// <summary> |
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/// Mark Unversioned all FileState rows from the database whose path |
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/// starts with one of the removed paths |
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/// </summary> |
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/// <param name="removed"></param> |
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public static void UnversionPaths(List<string> removed) |
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{ |
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if (removed == null) |
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return; |
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if (removed.Count == 0) |
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return; |
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|
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//Create a disjunction (list of OR statements |
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var disjunction = new Disjunction(); |
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foreach (var path in removed) |
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{ |
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//with the restriction FileState.FilePath like '@path%' |
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disjunction.Add(Restrictions.On<FileState>(s => s.FilePath) |
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.IsLike(path, MatchMode.Start)); |
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} |
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|
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//Generate a query from the disjunction |
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var query=QueryOver.Of<FileState>().Where(disjunction); |
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|
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ExecuteWithRetry((session,instance)=> |
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{ |
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using (var t=session.BeginTransaction()) |
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{ |
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var states = query.GetExecutableQueryOver(session).List(); |
517 |
foreach (var state in states) |
518 |
{ |
519 |
state.FileStatus = FileStatus.Unversioned; |
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state.OverlayStatus = FileOverlayStatus.Unversioned; |
521 |
state.Update(); |
522 |
} |
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t.Commit(); |
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} |
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return null; |
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},null); |
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} |
528 |
|
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} |
530 |
|
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[ActiveRecord("Tags")] |
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public class FileTag : ActiveRecordLinqBase<FileTag> |
533 |
{ |
534 |
[PrimaryKey] |
535 |
public int Id { get; set; } |
536 |
|
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[Property] |
538 |
public string Name { get; set; } |
539 |
|
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[Property] |
541 |
public string Value { get; set; } |
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|
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[BelongsTo("FileStateId")] |
544 |
public FileState FileState { get; set; } |
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|
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} |
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|
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} |