root / trunk / Pithos.Core / Agents / StatusAgent.cs @ bc27bb7e
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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.Security.Cryptography; |
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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; |
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using Castle.ActiveRecord.Framework.Config; |
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using NHibernate.ByteCode.Castle; |
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using NHibernate.Cfg; |
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using NHibernate.Cfg.Loquacious; |
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using NHibernate.Dialect; |
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using Pithos.Interfaces; |
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using Pithos.Network; |
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using log4net; |
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using Environment = System.Environment; |
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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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_pithosDataPath = Path.Combine(appDataPath , "GRNET\\PITHOS"); |
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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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|
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var source = GetConfiguration(_pithosDataPath); |
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ActiveRecordStarter.Initialize(source,typeof(FileState),typeof(FileTag)); |
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|
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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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if(String.IsNullOrWhiteSpace(dbPath)) |
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throw new ArgumentNullException("dbPath"); |
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if(String.IsNullOrWhiteSpace(appDataPath)) |
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throw new ArgumentNullException("appDataPath"); |
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Contract.EndContractBlock(); |
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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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Log.InfoFormat("Moving database from {0} to {1}",oldDbInfo.FullName,dbPath); |
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var oldDirectory = oldDbInfo.Directory; |
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oldDbInfo.MoveTo(dbPath); |
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|
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if (Log.IsDebugEnabled) |
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Log.DebugFormat("Deleting {0}",oldDirectory.FullName); |
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|
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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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queue.NotifyComplete(action); |
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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).ToList(); |
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|
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using (var shortHasher = HashAlgorithm.Create("sha1")) |
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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 createState = FileState.CreateFor(file); |
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_persistenceAgent.Post(createState.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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//To check for changes, we use the cheap (in CPU terms) SHA1 algorithm |
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//on the entire file. |
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|
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var hashString = file.ComputeShortHash(shortHasher); |
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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.ShortHash != 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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} |
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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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{ |
376 |
|
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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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} |
384 |
} |
385 |
catch (Exception exc) |
386 |
{ |
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Log.Error(exc.ToString()); |
388 |
throw; |
389 |
} |
390 |
} |
391 |
} |
392 |
|
393 |
|
394 |
|
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public string BlockHash { get; set; } |
396 |
|
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public int BlockSize { get; set; } |
398 |
public void ChangeRoots(string oldPath, string newPath) |
399 |
{ |
400 |
if (String.IsNullOrWhiteSpace(oldPath)) |
401 |
throw new ArgumentNullException("oldPath"); |
402 |
if (!Path.IsPathRooted(oldPath)) |
403 |
throw new ArgumentException("oldPath must be an absolute path", "oldPath"); |
404 |
if (string.IsNullOrWhiteSpace(newPath)) |
405 |
throw new ArgumentNullException("newPath"); |
406 |
if (!Path.IsPathRooted(newPath)) |
407 |
throw new ArgumentException("newPath must be an absolute path", "newPath"); |
408 |
Contract.EndContractBlock(); |
409 |
|
410 |
FileState.ChangeRootPath(oldPath,newPath); |
411 |
|
412 |
} |
413 |
|
414 |
|
415 |
|
416 |
private readonly string _pithosDataPath; |
417 |
|
418 |
|
419 |
public FileState GetStateByFilePath(string path) |
420 |
{ |
421 |
if (String.IsNullOrWhiteSpace(path)) |
422 |
throw new ArgumentNullException("path"); |
423 |
if (!Path.IsPathRooted(path)) |
424 |
throw new ArgumentException("The path must be rooted", "path"); |
425 |
Contract.EndContractBlock(); |
426 |
|
427 |
try |
428 |
{ |
429 |
|
430 |
using (var connection = GetConnection()) |
431 |
using (var command = new SQLiteCommand("select Id, FilePath, OverlayStatus,FileStatus ,Checksum ,ShortHash,Version ,VersionTimeStamp,IsShared ,SharedBy ,ShareWrite from FileState where FilePath=:path COLLATE NOCASE", connection)) |
432 |
{ |
433 |
|
434 |
command.Parameters.AddWithValue("path", path); |
435 |
|
436 |
using (var reader = command.ExecuteReader()) |
437 |
{ |
438 |
if (reader.Read()) |
439 |
{ |
440 |
//var values = new object[reader.FieldCount]; |
441 |
//reader.GetValues(values); |
442 |
var state = new FileState |
443 |
{ |
444 |
Id = reader.GetGuid(0), |
445 |
FilePath = reader.IsDBNull(1)?"":reader.GetString(1), |
446 |
OverlayStatus =reader.IsDBNull(2)?FileOverlayStatus.Unversioned: (FileOverlayStatus) reader.GetInt64(2), |
447 |
FileStatus = reader.IsDBNull(3)?FileStatus.Missing:(FileStatus) reader.GetInt64(3), |
448 |
Checksum = reader.IsDBNull(4)?"":reader.GetString(4), |
449 |
ShortHash= reader.IsDBNull(5)?"":reader.GetString(5), |
450 |
Version = reader.IsDBNull(6)?default(long):reader.GetInt64(6), |
451 |
VersionTimeStamp = reader.IsDBNull(7)?default(DateTime):reader.GetDateTime(7), |
452 |
IsShared = !reader.IsDBNull(8) && reader.GetBoolean(8), |
453 |
SharedBy = reader.IsDBNull(9)?"":reader.GetString(9), |
454 |
ShareWrite = !reader.IsDBNull(10) && reader.GetBoolean(10) |
455 |
}; |
456 |
/* |
457 |
var state = new FileState |
458 |
{ |
459 |
Id = (Guid) values[0], |
460 |
FilePath = (string) values[1], |
461 |
OverlayStatus = (FileOverlayStatus) (long)values[2], |
462 |
FileStatus = (FileStatus) (long)values[3], |
463 |
Checksum = (string) values[4], |
464 |
Version = (long?) values[5], |
465 |
VersionTimeStamp = (DateTime?) values[6], |
466 |
IsShared = (long)values[7] == 1, |
467 |
SharedBy = (string) values[8], |
468 |
ShareWrite = (long)values[9] == 1 |
469 |
}; |
470 |
*/ |
471 |
return state; |
472 |
} |
473 |
else |
474 |
{ |
475 |
return null; |
476 |
} |
477 |
|
478 |
} |
479 |
} |
480 |
} |
481 |
catch (Exception exc) |
482 |
{ |
483 |
Log.ErrorFormat(exc.ToString()); |
484 |
throw; |
485 |
} |
486 |
} |
487 |
|
488 |
public FileOverlayStatus GetFileOverlayStatus(string path) |
489 |
{ |
490 |
if (String.IsNullOrWhiteSpace(path)) |
491 |
throw new ArgumentNullException("path"); |
492 |
if (!Path.IsPathRooted(path)) |
493 |
throw new ArgumentException("The path must be rooted", "path"); |
494 |
Contract.EndContractBlock(); |
495 |
|
496 |
try |
497 |
{ |
498 |
|
499 |
using (var connection = GetConnection()) |
500 |
using (var command = new SQLiteCommand("select OverlayStatus from FileState where FilePath=:path COLLATE NOCASE", connection)) |
501 |
{ |
502 |
|
503 |
command.Parameters.AddWithValue("path", path); |
504 |
|
505 |
var s = command.ExecuteScalar(); |
506 |
return (FileOverlayStatus) Convert.ToInt32(s); |
507 |
} |
508 |
} |
509 |
catch (Exception exc) |
510 |
{ |
511 |
Log.ErrorFormat(exc.ToString()); |
512 |
return FileOverlayStatus.Unversioned; |
513 |
} |
514 |
} |
515 |
|
516 |
private string GetConnectionString() |
517 |
{ |
518 |
var connectionString = String.Format(@"Data Source={0}\pithos.db;Version=3;Enlist=N;Pooling=True", _pithosDataPath); |
519 |
return connectionString; |
520 |
} |
521 |
|
522 |
private SQLiteConnection GetConnection() |
523 |
{ |
524 |
var connectionString = GetConnectionString(); |
525 |
var connection = new SQLiteConnection(connectionString); |
526 |
connection.Open(); |
527 |
using(var cmd =connection.CreateCommand()) |
528 |
{ |
529 |
cmd.CommandText = "PRAGMA journal_mode=WAL"; |
530 |
cmd.ExecuteNonQuery(); |
531 |
} |
532 |
return connection; |
533 |
} |
534 |
|
535 |
/* public void SetFileOverlayStatus(string path, FileOverlayStatus overlayStatus) |
536 |
{ |
537 |
if (String.IsNullOrWhiteSpace(path)) |
538 |
throw new ArgumentNullException("path"); |
539 |
if (!Path.IsPathRooted(path)) |
540 |
throw new ArgumentException("The path must be rooted","path"); |
541 |
Contract.EndContractBlock(); |
542 |
|
543 |
_persistenceAgent.Post(() => FileState.StoreOverlayStatus(path,overlayStatus)); |
544 |
}*/ |
545 |
|
546 |
public Task SetFileOverlayStatus(string path, FileOverlayStatus overlayStatus, string shortHash = null) |
547 |
{ |
548 |
if (String.IsNullOrWhiteSpace(path)) |
549 |
throw new ArgumentNullException("path"); |
550 |
if (!Path.IsPathRooted(path)) |
551 |
throw new ArgumentException("The path must be rooted","path"); |
552 |
Contract.EndContractBlock(); |
553 |
|
554 |
return _persistenceAgent.PostAndAwait(() => FileState.StoreOverlayStatus(path,overlayStatus,shortHash)); |
555 |
} |
556 |
|
557 |
/* public void RenameFileOverlayStatus(string oldPath, string newPath) |
558 |
{ |
559 |
if (String.IsNullOrWhiteSpace(oldPath)) |
560 |
throw new ArgumentNullException("oldPath"); |
561 |
if (!Path.IsPathRooted(oldPath)) |
562 |
throw new ArgumentException("The oldPath must be rooted", "oldPath"); |
563 |
if (String.IsNullOrWhiteSpace(newPath)) |
564 |
throw new ArgumentNullException("newPath"); |
565 |
if (!Path.IsPathRooted(newPath)) |
566 |
throw new ArgumentException("The newPath must be rooted", "newPath"); |
567 |
Contract.EndContractBlock(); |
568 |
|
569 |
_persistenceAgent.Post(() =>FileState.RenameState(oldPath, newPath)); |
570 |
}*/ |
571 |
|
572 |
public void SetFileState(string path, FileStatus fileStatus, FileOverlayStatus overlayStatus) |
573 |
{ |
574 |
if (String.IsNullOrWhiteSpace(path)) |
575 |
throw new ArgumentNullException("path"); |
576 |
if (!Path.IsPathRooted(path)) |
577 |
throw new ArgumentException("The path must be rooted", "path"); |
578 |
Contract.EndContractBlock(); |
579 |
|
580 |
Debug.Assert(!path.Contains(FolderConstants.CacheFolder)); |
581 |
Debug.Assert(!path.EndsWith(".ignore")); |
582 |
|
583 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, fileStatus, overlayStatus)); |
584 |
} |
585 |
|
586 |
/* |
587 |
public void StoreInfo(string path,ObjectInfo objectInfo) |
588 |
{ |
589 |
if (String.IsNullOrWhiteSpace(path)) |
590 |
throw new ArgumentNullException("path"); |
591 |
if (!Path.IsPathRooted(path)) |
592 |
throw new ArgumentException("The path must be rooted", "path"); |
593 |
if (objectInfo == null) |
594 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
595 |
Contract.EndContractBlock(); |
596 |
|
597 |
_persistenceAgent.Post(() => |
598 |
{ |
599 |
var filePath = path.ToLower(); |
600 |
//Load the existing files state and set its properties in one session |
601 |
using (new SessionScope()) |
602 |
{ |
603 |
//Forgetting to use a sessionscope results in two sessions being created, one by |
604 |
//FirstOrDefault and one by Save() |
605 |
var state =FileState.FindByFilePath(filePath); |
606 |
|
607 |
//Create a new empty state object if this is a new file |
608 |
state = state ?? new FileState(); |
609 |
|
610 |
state.FilePath = filePath; |
611 |
state.Checksum = objectInfo.Hash; |
612 |
state.Version = objectInfo.Version; |
613 |
state.VersionTimeStamp = objectInfo.VersionTimestamp; |
614 |
|
615 |
state.FileStatus = FileStatus.Unchanged; |
616 |
state.OverlayStatus = FileOverlayStatus.Normal; |
617 |
|
618 |
|
619 |
//Do the save |
620 |
state.Save(); |
621 |
} |
622 |
}); |
623 |
|
624 |
} |
625 |
*/ |
626 |
|
627 |
public void StoreInfo(string path, ObjectInfo objectInfo) |
628 |
{ |
629 |
if (String.IsNullOrWhiteSpace(path)) |
630 |
throw new ArgumentNullException("path"); |
631 |
if (!Path.IsPathRooted(path)) |
632 |
throw new ArgumentException("The path must be rooted", "path"); |
633 |
if (objectInfo == null) |
634 |
throw new ArgumentNullException("objectInfo", "objectInfo can't be empty"); |
635 |
Contract.EndContractBlock(); |
636 |
|
637 |
_persistenceAgent.Post(() => StoreInfoDirect(path, objectInfo)); |
638 |
|
639 |
} |
640 |
|
641 |
private void StoreInfoDirect(string path, ObjectInfo objectInfo) |
642 |
{ |
643 |
try |
644 |
{ |
645 |
|
646 |
using (var connection = GetConnection()) |
647 |
using (var command = new SQLiteCommand(connection)) |
648 |
{ |
649 |
if (StateExists(path, connection)) |
650 |
command.CommandText = |
651 |
"update FileState set FileStatus= :fileStatus where FilePath = :path COLLATE NOCASE "; |
652 |
else |
653 |
{ |
654 |
command.CommandText = |
655 |
"INSERT INTO FileState (Id,FilePath,Checksum,Version,VersionTimeStamp,ShortHash,FileStatus,OverlayStatus) VALUES (:id,:path,:checksum,:version,:versionTimeStamp,:shortHash,:fileStatus,:overlayStatus)"; |
656 |
command.Parameters.AddWithValue("id", Guid.NewGuid()); |
657 |
} |
658 |
|
659 |
command.Parameters.AddWithValue("path", path); |
660 |
command.Parameters.AddWithValue("checksum", objectInfo.Hash); |
661 |
command.Parameters.AddWithValue("shortHash", ""); |
662 |
command.Parameters.AddWithValue("version", objectInfo.Version); |
663 |
command.Parameters.AddWithValue("versionTimeStamp", |
664 |
objectInfo.VersionTimestamp); |
665 |
command.Parameters.AddWithValue("fileStatus", FileStatus.Unchanged); |
666 |
command.Parameters.AddWithValue("overlayStatus", |
667 |
FileOverlayStatus.Normal); |
668 |
|
669 |
var affected = command.ExecuteNonQuery(); |
670 |
return; |
671 |
} |
672 |
} |
673 |
catch (Exception exc) |
674 |
{ |
675 |
Log.Error(exc.ToString()); |
676 |
throw; |
677 |
} |
678 |
} |
679 |
|
680 |
private bool StateExists(string filePath,SQLiteConnection connection) |
681 |
{ |
682 |
using (var command = new SQLiteCommand("Select count(*) from FileState where FilePath=:path COLLATE NOCASE", connection)) |
683 |
{ |
684 |
command.Parameters.AddWithValue("path", filePath); |
685 |
var result = command.ExecuteScalar(); |
686 |
return ((long)result >= 1); |
687 |
} |
688 |
|
689 |
} |
690 |
|
691 |
public void SetFileStatus(string path, FileStatus status) |
692 |
{ |
693 |
if (String.IsNullOrWhiteSpace(path)) |
694 |
throw new ArgumentNullException("path"); |
695 |
if (!Path.IsPathRooted(path)) |
696 |
throw new ArgumentException("The path must be rooted", "path"); |
697 |
Contract.EndContractBlock(); |
698 |
|
699 |
_persistenceAgent.Post(() => UpdateStatusDirect(path, status)); |
700 |
} |
701 |
|
702 |
public FileStatus GetFileStatus(string path) |
703 |
{ |
704 |
if (String.IsNullOrWhiteSpace(path)) |
705 |
throw new ArgumentNullException("path"); |
706 |
if (!Path.IsPathRooted(path)) |
707 |
throw new ArgumentException("The path must be rooted", "path"); |
708 |
Contract.EndContractBlock(); |
709 |
|
710 |
|
711 |
using (var connection = GetConnection()) |
712 |
{ |
713 |
var command = new SQLiteCommand("select FileStatus from FileState where FilePath=:path COLLATE NOCASE", connection); |
714 |
command.Parameters.AddWithValue("path", path); |
715 |
|
716 |
var statusValue = command.ExecuteScalar(); |
717 |
if (statusValue==null) |
718 |
return FileStatus.Missing; |
719 |
return (FileStatus)Convert.ToInt32(statusValue); |
720 |
} |
721 |
} |
722 |
|
723 |
/// <summary> |
724 |
/// Deletes the status of the specified file |
725 |
/// </summary> |
726 |
/// <param name="path"></param> |
727 |
public void ClearFileStatus(string path) |
728 |
{ |
729 |
if (String.IsNullOrWhiteSpace(path)) |
730 |
throw new ArgumentNullException("path"); |
731 |
if (!Path.IsPathRooted(path)) |
732 |
throw new ArgumentException("The path must be rooted", "path"); |
733 |
Contract.EndContractBlock(); |
734 |
|
735 |
_persistenceAgent.Post(() => DeleteDirect(path)); |
736 |
} |
737 |
|
738 |
/// <summary> |
739 |
/// Deletes the status of the specified folder and all its contents |
740 |
/// </summary> |
741 |
/// <param name="path"></param> |
742 |
public void ClearFolderStatus(string path) |
743 |
{ |
744 |
if (String.IsNullOrWhiteSpace(path)) |
745 |
throw new ArgumentNullException("path"); |
746 |
if (!Path.IsPathRooted(path)) |
747 |
throw new ArgumentException("The path must be rooted", "path"); |
748 |
Contract.EndContractBlock(); |
749 |
|
750 |
_persistenceAgent.Post(() => DeleteFolderDirect(path)); |
751 |
} |
752 |
|
753 |
public IEnumerable<FileState> GetChildren(FileState fileState) |
754 |
{ |
755 |
if (fileState == null) |
756 |
throw new ArgumentNullException("fileState"); |
757 |
Contract.EndContractBlock(); |
758 |
|
759 |
var children = from state in FileState.Queryable |
760 |
where state.FilePath.StartsWith(fileState.FilePath + "\\") |
761 |
select state; |
762 |
return children; |
763 |
} |
764 |
|
765 |
public void EnsureFileState(string path) |
766 |
{ |
767 |
var existingState = GetStateByFilePath(path); |
768 |
if (existingState != null) |
769 |
return; |
770 |
var fileInfo = FileInfoExtensions.FromPath(path); |
771 |
using (new SessionScope()) |
772 |
{ |
773 |
var newState = FileState.CreateFor(fileInfo); |
774 |
newState.FileStatus=FileStatus.Missing; |
775 |
_persistenceAgent.PostAndAwait(newState.CreateAndFlush).Wait(); |
776 |
} |
777 |
|
778 |
} |
779 |
|
780 |
private int DeleteDirect(string filePath) |
781 |
{ |
782 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
783 |
{ |
784 |
|
785 |
try |
786 |
{ |
787 |
|
788 |
|
789 |
using (var connection = GetConnection()) |
790 |
{ |
791 |
var command = new SQLiteCommand("delete from FileState where FilePath = :path COLLATE NOCASE", |
792 |
connection); |
793 |
|
794 |
command.Parameters.AddWithValue("path", filePath); |
795 |
|
796 |
var affected = command.ExecuteNonQuery(); |
797 |
return affected; |
798 |
} |
799 |
} |
800 |
catch (Exception exc) |
801 |
{ |
802 |
Log.Error(exc.ToString()); |
803 |
throw; |
804 |
} |
805 |
} |
806 |
} |
807 |
|
808 |
private int DeleteFolderDirect(string filePath) |
809 |
{ |
810 |
using (log4net.ThreadContext.Stacks["StatusAgent"].Push("DeleteDirect")) |
811 |
{ |
812 |
|
813 |
try |
814 |
{ |
815 |
|
816 |
|
817 |
using (var connection = GetConnection()) |
818 |
{ |
819 |
var command = new SQLiteCommand(@"delete from FileState where FilePath = :path or FilePath like :path || '\%' COLLATE NOCASE", |
820 |
connection); |
821 |
|
822 |
command.Parameters.AddWithValue("path", filePath); |
823 |
|
824 |
var affected = command.ExecuteNonQuery(); |
825 |
return affected; |
826 |
} |
827 |
} |
828 |
catch (Exception exc) |
829 |
{ |
830 |
Log.Error(exc.ToString()); |
831 |
throw; |
832 |
} |
833 |
} |
834 |
} |
835 |
|
836 |
public void UpdateFileChecksum(string path, string shortHash, string checksum) |
837 |
{ |
838 |
if (String.IsNullOrWhiteSpace(path)) |
839 |
throw new ArgumentNullException("path"); |
840 |
if (!Path.IsPathRooted(path)) |
841 |
throw new ArgumentException("The path must be rooted", "path"); |
842 |
Contract.EndContractBlock(); |
843 |
|
844 |
_persistenceAgent.Post(() => FileState.UpdateChecksum(path, shortHash,checksum)); |
845 |
} |
846 |
|
847 |
|
848 |
public void CleanupOrphanStates() |
849 |
{ |
850 |
//Orphan states are those that do not correspond to an account, ie. their paths |
851 |
//do not start with the root path of any registered account |
852 |
|
853 |
var roots=(from account in Settings.Accounts |
854 |
select account.RootPath).ToList(); |
855 |
|
856 |
var allStates = from state in FileState.Queryable |
857 |
select state.FilePath; |
858 |
|
859 |
foreach (var statePath in allStates) |
860 |
{ |
861 |
if (!roots.Any(root=>statePath.StartsWith(root,StringComparison.InvariantCultureIgnoreCase))) |
862 |
this.DeleteDirect(statePath); |
863 |
} |
864 |
} |
865 |
|
866 |
public void CleanupStaleStates(AccountInfo accountInfo, List<ObjectInfo> objectInfos) |
867 |
{ |
868 |
if (accountInfo == null) |
869 |
throw new ArgumentNullException("accountInfo"); |
870 |
if (objectInfos == null) |
871 |
throw new ArgumentNullException("objectInfos"); |
872 |
Contract.EndContractBlock(); |
873 |
|
874 |
|
875 |
|
876 |
//Stale states are those that have no corresponding local or server file |
877 |
|
878 |
|
879 |
var agent=FileAgent.GetFileAgent(accountInfo); |
880 |
|
881 |
var localFiles=agent.EnumerateFiles(); |
882 |
var localSet = new HashSet<string>(localFiles); |
883 |
|
884 |
var serverFiles = from info in objectInfos |
885 |
select Path.Combine(accountInfo.AccountPath,info.RelativeUrlToFilePath(accountInfo.UserName)); |
886 |
var serverSet = new HashSet<string>(serverFiles); |
887 |
|
888 |
var allStates = from state in FileState.Queryable |
889 |
where state.FilePath.StartsWith(agent.RootPath) |
890 |
select state.FilePath; |
891 |
var stateSet = new HashSet<string>(allStates); |
892 |
stateSet.ExceptWith(serverSet); |
893 |
stateSet.ExceptWith(localSet); |
894 |
|
895 |
foreach (var remainder in stateSet) |
896 |
{ |
897 |
DeleteDirect(remainder); |
898 |
} |
899 |
|
900 |
|
901 |
} |
902 |
} |
903 |
|
904 |
|
905 |
} |