root / trunk / Pithos.Core / Agents / StatusAgent.cs @ 255f5f86
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#region |
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/* ----------------------------------------------------------------------- |
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* <copyright file="StatusAgent.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.Data.SQLite; |
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using System.Diagnostics; |
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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.Text; |
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using System.Threading; |
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using System.Threading.Tasks; |
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using Castle.ActiveRecord; |
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using Castle.ActiveRecord.Framework.Config; |
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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.Agents |
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{ |
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[Export(typeof(IStatusChecker)),Export(typeof(IStatusKeeper))] |
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public class StatusAgent:IStatusChecker,IStatusKeeper |
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{ |
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[System.ComponentModel.Composition.Import] |
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public IPithosSettings Settings { get; set; } |
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|
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private Agent<Action> _persistenceAgent; |
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|
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|
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private static readonly ILog Log = LogManager.GetLogger("StatusAgent"); |
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|
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public StatusAgent() |
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{ |
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var appDataPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData); |
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|
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|
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|
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_pithosDataPath = Path.Combine(appDataPath , "GRNET"); |
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if (!Directory.Exists(_pithosDataPath)) |
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Directory.CreateDirectory(_pithosDataPath); |
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|
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var dbPath = Path.Combine(_pithosDataPath, "pithos.db"); |
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|
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MigrateOldDb(dbPath, appDataPath); |
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|
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var source = GetConfiguration(_pithosDataPath); |
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ActiveRecordStarter.Initialize(source,typeof(FileState),typeof(FileTag)); |
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ActiveRecordStarter.UpdateSchema(); |
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|
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|
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if (!File.Exists(dbPath)) |
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ActiveRecordStarter.CreateSchema(); |
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|
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CreateTrigger(); |
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|
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} |
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|
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|
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private static void MigrateOldDb(string dbPath, string appDataPath) |
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{ |
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Contract.Requires(!String.IsNullOrWhiteSpace(dbPath)); |
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Contract.Requires(!String.IsNullOrWhiteSpace(appDataPath)); |
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|
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var oldDbPath = Path.Combine(appDataPath, "Pithos", "pithos.db"); |
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var oldDbInfo = new FileInfo(oldDbPath); |
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if (oldDbInfo.Exists && !File.Exists(dbPath)) |
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{ |
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var oldDirectory = oldDbInfo.Directory; |
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oldDbInfo.MoveTo(dbPath); |
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oldDirectory.Delete(true); |
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} |
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} |
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|
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private void CreateTrigger() |
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{ |
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using (var connection = GetConnection()) |
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using (var triggerCommand = connection.CreateCommand()) |
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{ |
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var cmdText = new StringBuilder() |
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.AppendLine("CREATE TRIGGER IF NOT EXISTS update_last_modified UPDATE ON FileState FOR EACH ROW") |
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.AppendLine("BEGIN") |
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.AppendLine("UPDATE FileState SET Modified=datetime('now') WHERE Id=old.Id;") |
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.AppendLine("END;") |
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.AppendLine("CREATE TRIGGER IF NOT EXISTS insert_last_modified INSERT ON FileState FOR EACH ROW") |
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.AppendLine("BEGIN") |
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.AppendLine("UPDATE FileState SET Modified=datetime('now') WHERE Id=new.Id;") |
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.AppendLine("END;") |
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.ToString(); |
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triggerCommand.CommandText = cmdText; |
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triggerCommand.ExecuteNonQuery(); |
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} |
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} |
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|
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|
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private static InPlaceConfigurationSource GetConfiguration(string pithosDbPath) |
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{ |
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if (String.IsNullOrWhiteSpace(pithosDbPath)) |
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throw new ArgumentNullException("pithosDbPath"); |
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if (!Path.IsPathRooted(pithosDbPath)) |
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throw new ArgumentException("path must be a rooted path", "pithosDbPath"); |
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Contract.EndContractBlock(); |
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|
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var properties = new Dictionary<string, string> |
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{ |
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{"connection.driver_class", "NHibernate.Driver.SQLite20Driver"}, |
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{"dialect", "NHibernate.Dialect.SQLiteDialect"}, |
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{"connection.provider", "NHibernate.Connection.DriverConnectionProvider"}, |
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{ |
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"proxyfactory.factory_class", |
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"NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle" |
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}, |
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}; |
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|
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var connectionString = String.Format(@"Data Source={0}\pithos.db;Version=3;Enlist=N", pithosDbPath); |
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properties.Add("connection.connection_string", connectionString); |
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|
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var source = new InPlaceConfigurationSource(); |
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source.Add(typeof (ActiveRecordBase), properties); |
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source.SetDebugFlag(false); |
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return source; |
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} |
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|
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public void StartProcessing(CancellationToken token) |
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{ |
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_persistenceAgent = Agent<Action>.Start(queue => |
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{ |
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Action loop = null; |
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loop = () => |
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{ |
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var job = queue.Receive(); |
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job.ContinueWith(t => |
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{ |
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var action = job.Result; |
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try |
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{ |
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action(); |
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} |
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catch (SQLiteException ex) |
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{ |
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Log.ErrorFormat("[ERROR] SQL \n{0}", ex); |
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} |
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catch (Exception ex) |
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{ |
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Log.ErrorFormat("[ERROR] STATE \n{0}", ex); |
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} |
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// ReSharper disable AccessToModifiedClosure |
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queue.DoAsync(loop); |
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// ReSharper restore AccessToModifiedClosure |
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}); |
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}; |
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loop(); |
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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 void Stop() |
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{ |
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_persistenceAgent.Stop(); |
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} |
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|
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|
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public void ProcessExistingFiles(IEnumerable<FileInfo> existingFiles) |
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{ |
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if(existingFiles ==null) |
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throw new ArgumentNullException("existingFiles"); |
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Contract.EndContractBlock(); |
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|
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//Find new or matching files with a left join to the stored states |
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var fileStates = FileState.Queryable; |
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var currentFiles=from file in existingFiles |
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join state in fileStates on file.FullName.ToLower() equals state.FilePath.ToLower() into gs |
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from substate in gs.DefaultIfEmpty() |
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select new {File = file, State = substate}; |
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|
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//To get the deleted files we must get the states that have no corresponding |
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//files. |
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//We can't use the File.Exists method inside a query, so we get all file paths from the states |
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var statePaths = (from state in fileStates |
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select new {state.Id, state.FilePath}).ToList(); |
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//and check each one |
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var missingStates= (from path in statePaths |
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where !File.Exists(path.FilePath) && !Directory.Exists(path.FilePath) |
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select path.Id).ToList(); |
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//Finally, retrieve the states that correspond to the deleted files |
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var deletedFiles = from state in fileStates |
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where missingStates.Contains(state.Id) |
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select new { File = default(FileInfo), State = state }; |
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|
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var pairs = currentFiles.Union(deletedFiles); |
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|
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foreach(var pair in pairs) |
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{ |
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var fileState = pair.State; |
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var file = pair.File; |
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if (fileState == null) |
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{ |
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//This is a new file |
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var fullPath = pair.File.FullName; |
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var createState = FileState.CreateForAsync(fullPath, BlockSize, BlockHash); |
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createState.ContinueWith(state => _persistenceAgent.Post(state.Result.Create)); |
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} |
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else if (file == null) |
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{ |
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//This file was deleted while we were down. We should mark it as deleted |
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//We have to go through UpdateStatus here because the state object we are using |
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//was created by a different ORM session. |
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_persistenceAgent.Post(()=> UpdateStatusDirect(fileState.Id, FileStatus.Deleted)); |
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} |
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else |
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{ |
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//This file has a matching state. Need to check for possible changes |
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var hashString = file.CalculateHash(BlockSize,BlockHash); |
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//If the hashes don't match the file was changed |
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if (fileState.Checksum != hashString) |
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{ |
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_persistenceAgent.Post(() => UpdateStatusDirect(fileState.Id, FileStatus.Modified)); |
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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 int UpdateStatusDirect(Guid id, FileStatus status) |
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{ |
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using (log4net.ThreadContext.Stacks["StatusAgent"].Push("UpdateStatusDirect")) |
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{ |
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|
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try |
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{ |
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|
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using (var connection = GetConnection()) |
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using ( |
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var command = new SQLiteCommand("update FileState set FileStatus= :fileStatus where Id = :id ", |
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connection)) |
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{ |
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command.Parameters.AddWithValue("fileStatus", status); |
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|
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command.Parameters.AddWithValue("id", id); |
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|
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var affected = command.ExecuteNonQuery(); |
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|
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return affected; |
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} |
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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(exc.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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private int UpdateStatusDirect(string path, FileStatus status) |
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{ |
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using (log4net.ThreadContext.Stacks["StatusAgent"].Push("UpdateStatusDirect")) |
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{ |
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|
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try |
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{ |
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|
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|
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using (var connection = GetConnection()) |
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using ( |
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var command = |
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new SQLiteCommand("update FileState set FileStatus= :fileStatus where FilePath = :path COLLATE NOCASE", |
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connection)) |
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{ |
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|
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|
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command.Parameters.AddWithValue("fileStatus", status); |
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|
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command.Parameters.AddWithValue("path", path); |
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|
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var affected = command.ExecuteNonQuery(); |
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return affected; |
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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(exc.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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private int UpdateStatusDirect(string absolutePath, FileStatus fileStatus, FileOverlayStatus overlayStatus) |
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{ |
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using (log4net.ThreadContext.Stacks["StatusAgent"].Push("UpdateStatusDirect")) |
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{ |
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|
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try |
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{ |
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|
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|
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using (var connection = GetConnection()) |
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using ( |
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var command = |
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new SQLiteCommand( |
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"update FileState set OverlayStatus= :overlayStatus, FileStatus= :fileStatus where FilePath = :path COLLATE NOCASE ", |
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connection)) |
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{ |
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|
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command.Parameters.AddWithValue("path", absolutePath); |
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command.Parameters.AddWithValue("fileStatus", fileStatus); |
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command.Parameters.AddWithValue("overlayStatus", overlayStatus); |
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|
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var affected = command.ExecuteNonQuery(); |
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return affected; |
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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(exc.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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|
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public string BlockHash { get; set; } |
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|
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public int BlockSize { get; set; } |
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public void ChangeRoots(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"); |
373 |
if (string.IsNullOrWhiteSpace(newPath)) |
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throw new ArgumentNullException("newPath"); |
375 |
if (!Path.IsPathRooted(newPath)) |
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throw new ArgumentException("newPath must be an absolute path", "newPath"); |
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Contract.EndContractBlock(); |
378 |
|
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FileState.ChangeRootPath(oldPath,newPath); |
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|
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} |
382 |
|
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private PithosStatus _pithosStatus=PithosStatus.InSynch; |
384 |
|
385 |
public void SetPithosStatus(PithosStatus status) |
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{ |
387 |
_pithosStatus = status; |
388 |
} |
389 |
|
390 |
public PithosStatus GetPithosStatus() |
391 |
{ |
392 |
return _pithosStatus; |
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} |
394 |
|
395 |
|
396 |
private readonly string _pithosDataPath; |
397 |
|
398 |
|
399 |
public FileState GetStateByFilePath(string path) |
400 |
{ |
401 |
if (String.IsNullOrWhiteSpace(path)) |
402 |
throw new ArgumentNullException("path"); |
403 |
if (!Path.IsPathRooted(path)) |
404 |
throw new ArgumentException("The path must be rooted", "path"); |
405 |
Contract.EndContractBlock(); |
406 |
|
407 |
try |
408 |
{ |
409 |
|
410 |
using (var connection = GetConnection()) |
411 |
using (var command = new SQLiteCommand("select Id, FilePath, OverlayStatus,FileStatus ,Checksum ,Version ,VersionTimeStamp,IsShared ,SharedBy ,ShareWrite from FileState where FilePath=:path COLLATE NOCASE", connection)) |
412 |
{ |
413 |
|
414 |
command.Parameters.AddWithValue("path", path); |
415 |
|
416 |
using (var reader = command.ExecuteReader()) |
417 |
{ |
418 |
if (reader.Read()) |
419 |
{ |
420 |
//var values = new object[reader.FieldCount]; |
421 |
//reader.GetValues(values); |
422 |
var state = new FileState |
423 |
{ |
424 |
Id = reader.GetGuid(0), |
425 |
FilePath = reader.IsDBNull(1)?"":reader.GetString(1), |
426 |
OverlayStatus =reader.IsDBNull(2)?FileOverlayStatus.Unversioned: (FileOverlayStatus) reader.GetInt64(2), |
427 |
FileStatus = reader.IsDBNull(3)?FileStatus.Missing:(FileStatus) reader.GetInt64(3), |
428 |
Checksum = reader.IsDBNull(4)?"":reader.GetString(4), |
429 |
Version = reader.IsDBNull(5)?default(long):reader.GetInt64(5), |
430 |
VersionTimeStamp = reader.IsDBNull(6)?default(DateTime):reader.GetDateTime(6), |
431 |
IsShared = !reader.IsDBNull(7) && reader.GetBoolean(7), |
432 |
SharedBy = reader.IsDBNull(8)?"":reader.GetString(8), |
433 |
ShareWrite = !reader.IsDBNull(9) && reader.GetBoolean(9) |
434 |
}; |
435 |
/* |
436 |
var state = new FileState |
437 |
{ |
438 |
Id = (Guid) values[0], |
439 |
FilePath = (string) values[1], |
440 |
OverlayStatus = (FileOverlayStatus) (long)values[2], |
441 |
FileStatus = (FileStatus) (long)values[3], |
442 |
Checksum = (string) values[4], |
443 |
Version = (long?) values[5], |
444 |
VersionTimeStamp = (DateTime?) values[6], |
445 |
IsShared = (long)values[7] == 1, |
446 |
SharedBy = (string) values[8], |
447 |
ShareWrite = (long)values[9] == 1 |
448 |
}; |
449 |
*/ |
450 |
return state; |
451 |
} |
452 |
else |
453 |
{ |
454 |
return null; |
455 |
} |
456 |
|
457 |
} |
458 |
} |
459 |
} |
460 |
catch (Exception exc) |
461 |
{ |
462 |
Log.ErrorFormat(exc.ToString()); |
463 |
throw; |
464 |
} |
465 |
} |
466 |
|
467 |
public FileOverlayStatus GetFileOverlayStatus(string path) |
468 |
{ |
469 |
if (String.IsNullOrWhiteSpace(path)) |
470 |
throw new ArgumentNullException("path"); |
471 |
if (!Path.IsPathRooted(path)) |
472 |
throw new ArgumentException("The path must be rooted", "path"); |
473 |
Contract.EndContractBlock(); |
474 |
|
475 |
try |
476 |
{ |
477 |
|
478 |
using (var connection = GetConnection()) |
479 |
using (var command = new SQLiteCommand("select OverlayStatus from FileState where FilePath=:path COLLATE NOCASE", connection)) |
480 |
{ |
481 |
|
482 |
command.Parameters.AddWithValue("path", path); |
483 |
|
484 |
var s = command.ExecuteScalar(); |
485 |
return (FileOverlayStatus) Convert.ToInt32(s); |
486 |
} |
487 |
} |
488 |
catch (Exception exc) |
489 |
{ |
490 |
Log.ErrorFormat(exc.ToString()); |
491 |
return FileOverlayStatus.Unversioned; |
492 |
} |
493 |
} |
494 |
|
495 |
private string GetConnectionString() |
496 |
{ |
497 |
var connectionString = String.Format(@"Data Source={0}\pithos.db;Version=3;Enlist=N;Pooling=True", _pithosDataPath); |
498 |
return connectionString; |
499 |
} |
500 |
|
501 |
private SQLiteConnection GetConnection() |
502 |
{ |
503 |
var connectionString = GetConnectionString(); |
504 |
var connection = new SQLiteConnection(connectionString); |
505 |
connection.Open(); |
506 |
using(var cmd =connection.CreateCommand()) |
507 |
{ |
508 |
cmd.CommandText = "PRAGMA journal_mode=WAL"; |
509 |
cmd.ExecuteNonQuery(); |
510 |
} |
511 |
return connection; |
512 |
} |
513 |
|
514 |
public void SetFileOverlayStatus(string path, FileOverlayStatus overlayStatus) |
515 |
{ |
516 |
if (String.IsNullOrWhiteSpace(path)) |
517 |
throw new ArgumentNullException("path"); |
518 |
if (!Path.IsPathRooted(path)) |
519 |
throw new ArgumentException("The path must be rooted","path"); |
520 |
Contract.EndContractBlock(); |
521 |
|
522 |
_persistenceAgent.Post(() => FileState.StoreOverlayStatus(path,overlayStatus)); |
523 |
} |
524 |
|
525 |
/* public void RenameFileOverlayStatus(string oldPath, string newPath) |
526 |
{ |
527 |
if (String.IsNullOrWhiteSpace(oldPath)) |
528 |
throw new ArgumentNullException("oldPath"); |
529 |
if (!Path.IsPathRooted(oldPath)) |
530 |
throw new ArgumentException("The oldPath must be rooted", "oldPath"); |
531 |
if (String.IsNullOrWhiteSpace(newPath)) |
532 |
throw new ArgumentNullException("newPath"); |
533 |
if (!Path.IsPathRooted(newPath)) |
534 |
throw new ArgumentException("The newPath must be rooted", "newPath"); |
535 |
Contract.EndContractBlock(); |
536 |
|
537 |
_persistenceAgent.Post(() =>FileState.RenameState(oldPath, newPath)); |
538 |
}*/ |
539 |
|
540 |
public void SetFileState(string path, FileStatus fileStatus, FileOverlayStatus overlayStatus) |
541 |
{ |
542 |
if (String.IsNullOrWhiteSpace(path)) |
543 |
throw new ArgumentNullException("path"); |
544 |
if (!Path.IsPathRooted(path)) |
545 |
throw new ArgumentException("The path must be rooted", "path"); |
546 |
Contract.EndContractBlock(); |
547 |
|
548 |
Debug.Assert(!path.Contains(FolderConstants.CacheFolder)); |
549 |
Debug.Assert(!path.EndsWith(".ignore")); |
550 |
|
551 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, fileStatus, overlayStatus)); |
552 |
} |
553 |
|
554 |
/* |
555 |
public void StoreInfo(string path,ObjectInfo objectInfo) |
556 |
{ |
557 |
if (String.IsNullOrWhiteSpace(path)) |
558 |
throw new ArgumentNullException("path"); |
559 |
if (!Path.IsPathRooted(path)) |
560 |
throw new ArgumentException("The path must be rooted", "path"); |
561 |
if (objectInfo == null) |
562 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
563 |
Contract.EndContractBlock(); |
564 |
|
565 |
_persistenceAgent.Post(() => |
566 |
{ |
567 |
var filePath = path.ToLower(); |
568 |
//Load the existing files state and set its properties in one session |
569 |
using (new SessionScope()) |
570 |
{ |
571 |
//Forgetting to use a sessionscope results in two sessions being created, one by |
572 |
//FirstOrDefault and one by Save() |
573 |
var state =FileState.FindByFilePath(filePath); |
574 |
|
575 |
//Create a new empty state object if this is a new file |
576 |
state = state ?? new FileState(); |
577 |
|
578 |
state.FilePath = filePath; |
579 |
state.Checksum = objectInfo.Hash; |
580 |
state.Version = objectInfo.Version; |
581 |
state.VersionTimeStamp = objectInfo.VersionTimestamp; |
582 |
|
583 |
state.FileStatus = FileStatus.Unchanged; |
584 |
state.OverlayStatus = FileOverlayStatus.Normal; |
585 |
|
586 |
|
587 |
//Do the save |
588 |
state.Save(); |
589 |
} |
590 |
}); |
591 |
|
592 |
} |
593 |
*/ |
594 |
|
595 |
public void StoreInfo(string path, ObjectInfo objectInfo) |
596 |
{ |
597 |
if (String.IsNullOrWhiteSpace(path)) |
598 |
throw new ArgumentNullException("path"); |
599 |
if (!Path.IsPathRooted(path)) |
600 |
throw new ArgumentException("The path must be rooted", "path"); |
601 |
if (objectInfo == null) |
602 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
603 |
Contract.EndContractBlock(); |
604 |
|
605 |
_persistenceAgent.Post(() => StoreInfoDirect(path, objectInfo)); |
606 |
|
607 |
} |
608 |
|
609 |
private void StoreInfoDirect(string path, ObjectInfo objectInfo) |
610 |
{ |
611 |
try |
612 |
{ |
613 |
|
614 |
using (var connection = GetConnection()) |
615 |
using (var command = new SQLiteCommand(connection)) |
616 |
{ |
617 |
if (StateExists(path, connection)) |
618 |
command.CommandText = |
619 |
"update FileState set FileStatus= :fileStatus where FilePath = :path COLLATE NOCASE "; |
620 |
else |
621 |
{ |
622 |
command.CommandText = |
623 |
"INSERT INTO FileState (Id,FilePath,Checksum,Version,VersionTimeStamp,FileStatus,OverlayStatus) VALUES (:id,:path,:checksum,:version,:versionTimeStamp,:fileStatus,:overlayStatus)"; |
624 |
command.Parameters.AddWithValue("id", Guid.NewGuid()); |
625 |
} |
626 |
|
627 |
command.Parameters.AddWithValue("path", path); |
628 |
command.Parameters.AddWithValue("checksum", objectInfo.Hash); |
629 |
command.Parameters.AddWithValue("version", objectInfo.Version); |
630 |
command.Parameters.AddWithValue("versionTimeStamp", |
631 |
objectInfo.VersionTimestamp); |
632 |
command.Parameters.AddWithValue("fileStatus", FileStatus.Unchanged); |
633 |
command.Parameters.AddWithValue("overlayStatus", |
634 |
FileOverlayStatus.Normal); |
635 |
|
636 |
var affected = command.ExecuteNonQuery(); |
637 |
return; |
638 |
} |
639 |
} |
640 |
catch (Exception exc) |
641 |
{ |
642 |
Log.Error(exc.ToString()); |
643 |
throw; |
644 |
} |
645 |
} |
646 |
|
647 |
private bool StateExists(string filePath,SQLiteConnection connection) |
648 |
{ |
649 |
using (var command = new SQLiteCommand("Select count(*) from FileState where FilePath=:path COLLATE NOCASE", connection)) |
650 |
{ |
651 |
command.Parameters.AddWithValue("path", filePath); |
652 |
var result = command.ExecuteScalar(); |
653 |
return ((long)result >= 1); |
654 |
} |
655 |
|
656 |
} |
657 |
|
658 |
public void SetFileStatus(string path, FileStatus status) |
659 |
{ |
660 |
if (String.IsNullOrWhiteSpace(path)) |
661 |
throw new ArgumentNullException("path"); |
662 |
if (!Path.IsPathRooted(path)) |
663 |
throw new ArgumentException("The path must be rooted", "path"); |
664 |
Contract.EndContractBlock(); |
665 |
|
666 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, status)); |
667 |
} |
668 |
|
669 |
public FileStatus GetFileStatus(string path) |
670 |
{ |
671 |
if (String.IsNullOrWhiteSpace(path)) |
672 |
throw new ArgumentNullException("path"); |
673 |
if (!Path.IsPathRooted(path)) |
674 |
throw new ArgumentException("The path must be rooted", "path"); |
675 |
Contract.EndContractBlock(); |
676 |
|
677 |
|
678 |
using (var connection = GetConnection()) |
679 |
{ |
680 |
var command = new SQLiteCommand("select FileStatus from FileState where FilePath=:path COLLATE NOCASE", connection); |
681 |
command.Parameters.AddWithValue("path", path); |
682 |
|
683 |
var statusValue = command.ExecuteScalar(); |
684 |
if (statusValue==null) |
685 |
return FileStatus.Missing; |
686 |
return (FileStatus)Convert.ToInt32(statusValue); |
687 |
} |
688 |
} |
689 |
|
690 |
/// <summary> |
691 |
/// Deletes the status of the specified file |
692 |
/// </summary> |
693 |
/// <param name="path"></param> |
694 |
public void ClearFileStatus(string path) |
695 |
{ |
696 |
if (String.IsNullOrWhiteSpace(path)) |
697 |
throw new ArgumentNullException("path"); |
698 |
if (!Path.IsPathRooted(path)) |
699 |
throw new ArgumentException("The path must be rooted", "path"); |
700 |
Contract.EndContractBlock(); |
701 |
|
702 |
_persistenceAgent.Post(() => DeleteDirect(path)); |
703 |
} |
704 |
|
705 |
/// <summary> |
706 |
/// Deletes the status of the specified folder and all its contents |
707 |
/// </summary> |
708 |
/// <param name="path"></param> |
709 |
public void ClearFolderStatus(string path) |
710 |
{ |
711 |
if (String.IsNullOrWhiteSpace(path)) |
712 |
throw new ArgumentNullException("path"); |
713 |
if (!Path.IsPathRooted(path)) |
714 |
throw new ArgumentException("The path must be rooted", "path"); |
715 |
Contract.EndContractBlock(); |
716 |
|
717 |
_persistenceAgent.Post(() => DeleteFolderDirect(path)); |
718 |
} |
719 |
|
720 |
public IEnumerable<FileState> GetChildren(FileState fileState) |
721 |
{ |
722 |
if (fileState == null) |
723 |
throw new ArgumentNullException("fileState"); |
724 |
Contract.EndContractBlock(); |
725 |
|
726 |
var children = from state in FileState.Queryable |
727 |
where state.FilePath.StartsWith(fileState.FilePath + "\\") |
728 |
select state; |
729 |
return children; |
730 |
} |
731 |
|
732 |
private int DeleteDirect(string filePath) |
733 |
{ |
734 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
735 |
{ |
736 |
|
737 |
try |
738 |
{ |
739 |
|
740 |
|
741 |
using (var connection = GetConnection()) |
742 |
{ |
743 |
var command = new SQLiteCommand("delete from FileState where FilePath = :path COLLATE NOCASE", |
744 |
connection); |
745 |
|
746 |
command.Parameters.AddWithValue("path", filePath); |
747 |
|
748 |
var affected = command.ExecuteNonQuery(); |
749 |
return affected; |
750 |
} |
751 |
} |
752 |
catch (Exception exc) |
753 |
{ |
754 |
Log.Error(exc.ToString()); |
755 |
throw; |
756 |
} |
757 |
} |
758 |
} |
759 |
|
760 |
private int DeleteFolderDirect(string filePath) |
761 |
{ |
762 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
763 |
{ |
764 |
|
765 |
try |
766 |
{ |
767 |
|
768 |
|
769 |
using (var connection = GetConnection()) |
770 |
{ |
771 |
var command = new SQLiteCommand("delete from FileState where FilePath = :path or FilePath like :path + '/%' COLLATE NOCASE", |
772 |
connection); |
773 |
|
774 |
command.Parameters.AddWithValue("path", filePath); |
775 |
|
776 |
var affected = command.ExecuteNonQuery(); |
777 |
return affected; |
778 |
} |
779 |
} |
780 |
catch (Exception exc) |
781 |
{ |
782 |
Log.Error(exc.ToString()); |
783 |
throw; |
784 |
} |
785 |
} |
786 |
} |
787 |
|
788 |
public void UpdateFileChecksum(string path, string checksum) |
789 |
{ |
790 |
if (String.IsNullOrWhiteSpace(path)) |
791 |
throw new ArgumentNullException("path"); |
792 |
if (!Path.IsPathRooted(path)) |
793 |
throw new ArgumentException("The path must be rooted", "path"); |
794 |
Contract.EndContractBlock(); |
795 |
|
796 |
_persistenceAgent.Post(() => FileState.UpdateChecksum(path, checksum)); |
797 |
} |
798 |
|
799 |
} |
800 |
|
801 |
|
802 |
} |