root / trunk / Pithos.Core / Agents / StatusAgent.cs @ 6bcdd8e2
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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.Reflection; |
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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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private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
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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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|
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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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//TODO: Need a way to attach the hashes to the filestate so we don't |
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//recalculate them each time a call to calculate has is made |
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//We can either store them to the filestate or add them to a |
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//dictionary |
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|
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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"); |
380 |
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"); |
384 |
Contract.EndContractBlock(); |
385 |
|
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FileState.ChangeRootPath(oldPath,newPath); |
387 |
|
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} |
389 |
|
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private PithosStatus _pithosStatus=PithosStatus.InSynch; |
391 |
|
392 |
public void SetPithosStatus(PithosStatus status) |
393 |
{ |
394 |
_pithosStatus = status; |
395 |
} |
396 |
|
397 |
public PithosStatus GetPithosStatus() |
398 |
{ |
399 |
return _pithosStatus; |
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} |
401 |
|
402 |
|
403 |
private readonly string _pithosDataPath; |
404 |
|
405 |
|
406 |
public FileState GetStateByFilePath(string path) |
407 |
{ |
408 |
if (String.IsNullOrWhiteSpace(path)) |
409 |
throw new ArgumentNullException("path"); |
410 |
if (!Path.IsPathRooted(path)) |
411 |
throw new ArgumentException("The path must be rooted", "path"); |
412 |
Contract.EndContractBlock(); |
413 |
|
414 |
try |
415 |
{ |
416 |
|
417 |
using (var connection = GetConnection()) |
418 |
using (var command = new SQLiteCommand("select Id, FilePath, OverlayStatus,FileStatus ,Checksum ,Version ,VersionTimeStamp,IsShared ,SharedBy ,ShareWrite from FileState where FilePath=:path COLLATE NOCASE", connection)) |
419 |
{ |
420 |
|
421 |
command.Parameters.AddWithValue("path", path); |
422 |
|
423 |
using (var reader = command.ExecuteReader()) |
424 |
{ |
425 |
if (reader.Read()) |
426 |
{ |
427 |
//var values = new object[reader.FieldCount]; |
428 |
//reader.GetValues(values); |
429 |
var state = new FileState |
430 |
{ |
431 |
Id = reader.GetGuid(0), |
432 |
FilePath = reader.IsDBNull(1)?"":reader.GetString(1), |
433 |
OverlayStatus =reader.IsDBNull(2)?FileOverlayStatus.Unversioned: (FileOverlayStatus) reader.GetInt64(2), |
434 |
FileStatus = reader.IsDBNull(3)?FileStatus.Missing:(FileStatus) reader.GetInt64(3), |
435 |
Checksum = reader.IsDBNull(4)?"":reader.GetString(4), |
436 |
Version = reader.IsDBNull(5)?default(long):reader.GetInt64(5), |
437 |
VersionTimeStamp = reader.IsDBNull(6)?default(DateTime):reader.GetDateTime(6), |
438 |
IsShared = !reader.IsDBNull(7) && reader.GetBoolean(7), |
439 |
SharedBy = reader.IsDBNull(8)?"":reader.GetString(8), |
440 |
ShareWrite = !reader.IsDBNull(9) && reader.GetBoolean(9) |
441 |
}; |
442 |
/* |
443 |
var state = new FileState |
444 |
{ |
445 |
Id = (Guid) values[0], |
446 |
FilePath = (string) values[1], |
447 |
OverlayStatus = (FileOverlayStatus) (long)values[2], |
448 |
FileStatus = (FileStatus) (long)values[3], |
449 |
Checksum = (string) values[4], |
450 |
Version = (long?) values[5], |
451 |
VersionTimeStamp = (DateTime?) values[6], |
452 |
IsShared = (long)values[7] == 1, |
453 |
SharedBy = (string) values[8], |
454 |
ShareWrite = (long)values[9] == 1 |
455 |
}; |
456 |
*/ |
457 |
return state; |
458 |
} |
459 |
else |
460 |
{ |
461 |
return null; |
462 |
} |
463 |
|
464 |
} |
465 |
} |
466 |
} |
467 |
catch (Exception exc) |
468 |
{ |
469 |
Log.ErrorFormat(exc.ToString()); |
470 |
throw; |
471 |
} |
472 |
} |
473 |
|
474 |
public FileOverlayStatus GetFileOverlayStatus(string path) |
475 |
{ |
476 |
if (String.IsNullOrWhiteSpace(path)) |
477 |
throw new ArgumentNullException("path"); |
478 |
if (!Path.IsPathRooted(path)) |
479 |
throw new ArgumentException("The path must be rooted", "path"); |
480 |
Contract.EndContractBlock(); |
481 |
|
482 |
try |
483 |
{ |
484 |
|
485 |
using (var connection = GetConnection()) |
486 |
using (var command = new SQLiteCommand("select OverlayStatus from FileState where FilePath=:path COLLATE NOCASE", connection)) |
487 |
{ |
488 |
|
489 |
command.Parameters.AddWithValue("path", path); |
490 |
|
491 |
var s = command.ExecuteScalar(); |
492 |
return (FileOverlayStatus) Convert.ToInt32(s); |
493 |
} |
494 |
} |
495 |
catch (Exception exc) |
496 |
{ |
497 |
Log.ErrorFormat(exc.ToString()); |
498 |
return FileOverlayStatus.Unversioned; |
499 |
} |
500 |
} |
501 |
|
502 |
private string GetConnectionString() |
503 |
{ |
504 |
var connectionString = String.Format(@"Data Source={0}\pithos.db;Version=3;Enlist=N;Pooling=True", _pithosDataPath); |
505 |
return connectionString; |
506 |
} |
507 |
|
508 |
private SQLiteConnection GetConnection() |
509 |
{ |
510 |
var connectionString = GetConnectionString(); |
511 |
var connection = new SQLiteConnection(connectionString); |
512 |
connection.Open(); |
513 |
using(var cmd =connection.CreateCommand()) |
514 |
{ |
515 |
cmd.CommandText = "PRAGMA journal_mode=WAL"; |
516 |
cmd.ExecuteNonQuery(); |
517 |
} |
518 |
return connection; |
519 |
} |
520 |
|
521 |
public void SetFileOverlayStatus(string path, FileOverlayStatus overlayStatus) |
522 |
{ |
523 |
if (String.IsNullOrWhiteSpace(path)) |
524 |
throw new ArgumentNullException("path"); |
525 |
if (!Path.IsPathRooted(path)) |
526 |
throw new ArgumentException("The path must be rooted","path"); |
527 |
Contract.EndContractBlock(); |
528 |
|
529 |
_persistenceAgent.Post(() => FileState.StoreOverlayStatus(path,overlayStatus)); |
530 |
} |
531 |
|
532 |
/* public void RenameFileOverlayStatus(string oldPath, string newPath) |
533 |
{ |
534 |
if (String.IsNullOrWhiteSpace(oldPath)) |
535 |
throw new ArgumentNullException("oldPath"); |
536 |
if (!Path.IsPathRooted(oldPath)) |
537 |
throw new ArgumentException("The oldPath must be rooted", "oldPath"); |
538 |
if (String.IsNullOrWhiteSpace(newPath)) |
539 |
throw new ArgumentNullException("newPath"); |
540 |
if (!Path.IsPathRooted(newPath)) |
541 |
throw new ArgumentException("The newPath must be rooted", "newPath"); |
542 |
Contract.EndContractBlock(); |
543 |
|
544 |
_persistenceAgent.Post(() =>FileState.RenameState(oldPath, newPath)); |
545 |
}*/ |
546 |
|
547 |
public void SetFileState(string path, FileStatus fileStatus, FileOverlayStatus overlayStatus) |
548 |
{ |
549 |
if (String.IsNullOrWhiteSpace(path)) |
550 |
throw new ArgumentNullException("path"); |
551 |
if (!Path.IsPathRooted(path)) |
552 |
throw new ArgumentException("The path must be rooted", "path"); |
553 |
Contract.EndContractBlock(); |
554 |
|
555 |
Debug.Assert(!path.Contains(FolderConstants.CacheFolder)); |
556 |
Debug.Assert(!path.EndsWith(".ignore")); |
557 |
|
558 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, fileStatus, overlayStatus)); |
559 |
} |
560 |
|
561 |
/* |
562 |
public void StoreInfo(string path,ObjectInfo objectInfo) |
563 |
{ |
564 |
if (String.IsNullOrWhiteSpace(path)) |
565 |
throw new ArgumentNullException("path"); |
566 |
if (!Path.IsPathRooted(path)) |
567 |
throw new ArgumentException("The path must be rooted", "path"); |
568 |
if (objectInfo == null) |
569 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
570 |
Contract.EndContractBlock(); |
571 |
|
572 |
_persistenceAgent.Post(() => |
573 |
{ |
574 |
var filePath = path.ToLower(); |
575 |
//Load the existing files state and set its properties in one session |
576 |
using (new SessionScope()) |
577 |
{ |
578 |
//Forgetting to use a sessionscope results in two sessions being created, one by |
579 |
//FirstOrDefault and one by Save() |
580 |
var state =FileState.FindByFilePath(filePath); |
581 |
|
582 |
//Create a new empty state object if this is a new file |
583 |
state = state ?? new FileState(); |
584 |
|
585 |
state.FilePath = filePath; |
586 |
state.Checksum = objectInfo.Hash; |
587 |
state.Version = objectInfo.Version; |
588 |
state.VersionTimeStamp = objectInfo.VersionTimestamp; |
589 |
|
590 |
state.FileStatus = FileStatus.Unchanged; |
591 |
state.OverlayStatus = FileOverlayStatus.Normal; |
592 |
|
593 |
|
594 |
//Do the save |
595 |
state.Save(); |
596 |
} |
597 |
}); |
598 |
|
599 |
} |
600 |
*/ |
601 |
|
602 |
public void StoreInfo(string path, ObjectInfo objectInfo) |
603 |
{ |
604 |
if (String.IsNullOrWhiteSpace(path)) |
605 |
throw new ArgumentNullException("path"); |
606 |
if (!Path.IsPathRooted(path)) |
607 |
throw new ArgumentException("The path must be rooted", "path"); |
608 |
if (objectInfo == null) |
609 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
610 |
Contract.EndContractBlock(); |
611 |
|
612 |
_persistenceAgent.Post(() => StoreInfoDirect(path, objectInfo)); |
613 |
|
614 |
} |
615 |
|
616 |
private void StoreInfoDirect(string path, ObjectInfo objectInfo) |
617 |
{ |
618 |
try |
619 |
{ |
620 |
|
621 |
using (var connection = GetConnection()) |
622 |
using (var command = new SQLiteCommand(connection)) |
623 |
{ |
624 |
if (StateExists(path, connection)) |
625 |
command.CommandText = |
626 |
"update FileState set FileStatus= :fileStatus where FilePath = :path COLLATE NOCASE "; |
627 |
else |
628 |
{ |
629 |
command.CommandText = |
630 |
"INSERT INTO FileState (Id,FilePath,Checksum,Version,VersionTimeStamp,FileStatus,OverlayStatus) VALUES (:id,:path,:checksum,:version,:versionTimeStamp,:fileStatus,:overlayStatus)"; |
631 |
command.Parameters.AddWithValue("id", Guid.NewGuid()); |
632 |
} |
633 |
|
634 |
command.Parameters.AddWithValue("path", path); |
635 |
command.Parameters.AddWithValue("checksum", objectInfo.Hash); |
636 |
command.Parameters.AddWithValue("version", objectInfo.Version); |
637 |
command.Parameters.AddWithValue("versionTimeStamp", |
638 |
objectInfo.VersionTimestamp); |
639 |
command.Parameters.AddWithValue("fileStatus", FileStatus.Unchanged); |
640 |
command.Parameters.AddWithValue("overlayStatus", |
641 |
FileOverlayStatus.Normal); |
642 |
|
643 |
var affected = command.ExecuteNonQuery(); |
644 |
return; |
645 |
} |
646 |
} |
647 |
catch (Exception exc) |
648 |
{ |
649 |
Log.Error(exc.ToString()); |
650 |
throw; |
651 |
} |
652 |
} |
653 |
|
654 |
private bool StateExists(string filePath,SQLiteConnection connection) |
655 |
{ |
656 |
using (var command = new SQLiteCommand("Select count(*) from FileState where FilePath=:path COLLATE NOCASE", connection)) |
657 |
{ |
658 |
command.Parameters.AddWithValue("path", filePath); |
659 |
var result = command.ExecuteScalar(); |
660 |
return ((long)result >= 1); |
661 |
} |
662 |
|
663 |
} |
664 |
|
665 |
public void SetFileStatus(string path, FileStatus status) |
666 |
{ |
667 |
if (String.IsNullOrWhiteSpace(path)) |
668 |
throw new ArgumentNullException("path"); |
669 |
if (!Path.IsPathRooted(path)) |
670 |
throw new ArgumentException("The path must be rooted", "path"); |
671 |
Contract.EndContractBlock(); |
672 |
|
673 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, status)); |
674 |
} |
675 |
|
676 |
public FileStatus GetFileStatus(string path) |
677 |
{ |
678 |
if (String.IsNullOrWhiteSpace(path)) |
679 |
throw new ArgumentNullException("path"); |
680 |
if (!Path.IsPathRooted(path)) |
681 |
throw new ArgumentException("The path must be rooted", "path"); |
682 |
Contract.EndContractBlock(); |
683 |
|
684 |
|
685 |
using (var connection = GetConnection()) |
686 |
{ |
687 |
var command = new SQLiteCommand("select FileStatus from FileState where FilePath=:path COLLATE NOCASE", connection); |
688 |
command.Parameters.AddWithValue("path", path); |
689 |
|
690 |
var statusValue = command.ExecuteScalar(); |
691 |
if (statusValue==null) |
692 |
return FileStatus.Missing; |
693 |
return (FileStatus)Convert.ToInt32(statusValue); |
694 |
} |
695 |
} |
696 |
|
697 |
/// <summary> |
698 |
/// Deletes the status of the specified file |
699 |
/// </summary> |
700 |
/// <param name="path"></param> |
701 |
public void ClearFileStatus(string path) |
702 |
{ |
703 |
if (String.IsNullOrWhiteSpace(path)) |
704 |
throw new ArgumentNullException("path"); |
705 |
if (!Path.IsPathRooted(path)) |
706 |
throw new ArgumentException("The path must be rooted", "path"); |
707 |
Contract.EndContractBlock(); |
708 |
|
709 |
_persistenceAgent.Post(() => DeleteDirect(path)); |
710 |
} |
711 |
|
712 |
/// <summary> |
713 |
/// Deletes the status of the specified folder and all its contents |
714 |
/// </summary> |
715 |
/// <param name="path"></param> |
716 |
public void ClearFolderStatus(string path) |
717 |
{ |
718 |
if (String.IsNullOrWhiteSpace(path)) |
719 |
throw new ArgumentNullException("path"); |
720 |
if (!Path.IsPathRooted(path)) |
721 |
throw new ArgumentException("The path must be rooted", "path"); |
722 |
Contract.EndContractBlock(); |
723 |
|
724 |
_persistenceAgent.Post(() => DeleteFolderDirect(path)); |
725 |
} |
726 |
|
727 |
public IEnumerable<FileState> GetChildren(FileState fileState) |
728 |
{ |
729 |
if (fileState == null) |
730 |
throw new ArgumentNullException("fileState"); |
731 |
Contract.EndContractBlock(); |
732 |
|
733 |
var children = from state in FileState.Queryable |
734 |
where state.FilePath.StartsWith(fileState.FilePath + "\\") |
735 |
select state; |
736 |
return children; |
737 |
} |
738 |
|
739 |
private int DeleteDirect(string filePath) |
740 |
{ |
741 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
742 |
{ |
743 |
|
744 |
try |
745 |
{ |
746 |
|
747 |
|
748 |
using (var connection = GetConnection()) |
749 |
{ |
750 |
var command = new SQLiteCommand("delete from FileState where FilePath = :path COLLATE NOCASE", |
751 |
connection); |
752 |
|
753 |
command.Parameters.AddWithValue("path", filePath); |
754 |
|
755 |
var affected = command.ExecuteNonQuery(); |
756 |
return affected; |
757 |
} |
758 |
} |
759 |
catch (Exception exc) |
760 |
{ |
761 |
Log.Error(exc.ToString()); |
762 |
throw; |
763 |
} |
764 |
} |
765 |
} |
766 |
|
767 |
private int DeleteFolderDirect(string filePath) |
768 |
{ |
769 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
770 |
{ |
771 |
|
772 |
try |
773 |
{ |
774 |
|
775 |
|
776 |
using (var connection = GetConnection()) |
777 |
{ |
778 |
var command = new SQLiteCommand("delete from FileState where FilePath = :path or FilePath like :path + '/%' COLLATE NOCASE", |
779 |
connection); |
780 |
|
781 |
command.Parameters.AddWithValue("path", filePath); |
782 |
|
783 |
var affected = command.ExecuteNonQuery(); |
784 |
return affected; |
785 |
} |
786 |
} |
787 |
catch (Exception exc) |
788 |
{ |
789 |
Log.Error(exc.ToString()); |
790 |
throw; |
791 |
} |
792 |
} |
793 |
} |
794 |
|
795 |
public void UpdateFileChecksum(string path, string checksum) |
796 |
{ |
797 |
if (String.IsNullOrWhiteSpace(path)) |
798 |
throw new ArgumentNullException("path"); |
799 |
if (!Path.IsPathRooted(path)) |
800 |
throw new ArgumentException("The path must be rooted", "path"); |
801 |
Contract.EndContractBlock(); |
802 |
|
803 |
_persistenceAgent.Post(() => FileState.UpdateChecksum(path, checksum)); |
804 |
} |
805 |
|
806 |
} |
807 |
|
808 |
|
809 |
} |