Kenneth Hsu
b824c86c7e
This improves performance by using Any() to avoid unnecessary enumeration of collections.
560 lines
34 KiB
C#
560 lines
34 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using Duplicati.Library.Interface;
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using Duplicati.Library.Main.Database;
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using Duplicati.Library.Main.Volumes;
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namespace Duplicati.Library.Main.Operation
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{
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internal class RecreateDatabaseHandler : IDisposable
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{
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/// <summary>
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/// The tag used for logging
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/// </summary>
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private static readonly string LOGTAG = Logging.Log.LogTagFromType<RecreateDatabaseHandler>();
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private readonly string m_backendurl;
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private readonly Options m_options;
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private readonly RecreateDatabaseResults m_result;
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public delegate IEnumerable<KeyValuePair<long, IParsedVolume>> NumberedFilterFilelistDelegate(IEnumerable<IParsedVolume> filelist);
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public delegate void BlockVolumePostProcessor(string volumename,BlockVolumeReader reader);
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public RecreateDatabaseHandler(string backendurl, Options options, RecreateDatabaseResults result)
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{
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m_options = options;
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m_backendurl = backendurl;
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m_result = result;
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}
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/// <summary>
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/// Run the recreate procedure
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/// </summary>
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/// <param name="path">Path to the database that will be created</param>
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/// <param name="filelistfilter">A filter that can be used to disregard certain remote files, intended to be used to select a certain filelist</param>
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/// <param name="filter">Filters the files in a filelist to prevent downloading unwanted data</param>
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/// <param name="blockprocessor">A callback hook that can be used to work with downloaded block volumes, intended to be use to recover data blocks while processing blocklists</param>
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public void Run(string path, Library.Utility.IFilter filter = null, NumberedFilterFilelistDelegate filelistfilter = null, BlockVolumePostProcessor blockprocessor = null)
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{
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if (System.IO.File.Exists(path))
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throw new UserInformationException(string.Format("Cannot recreate database because file already exists: {0}", path), "RecreateTargetDatabaseExists");
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using(var db = new LocalDatabase(path, "Recreate", true))
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{
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m_result.SetDatabase(db);
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DoRun(db, false, filter, filelistfilter, blockprocessor);
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db.WriteResults();
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}
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}
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/// <summary>
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/// Updates a database with new path information from a remote fileset
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/// </summary>
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/// <param name="filelistfilter">A filter that can be used to disregard certain remote files, intended to be used to select a certain filelist</param>
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/// <param name="filter">Filters the files in a filelist to prevent downloading unwanted data</param>
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/// <param name="blockprocessor">A callback hook that can be used to work with downloaded block volumes, intended to be use to recover data blocks while processing blocklists</param>
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public void RunUpdate(Library.Utility.IFilter filter = null, NumberedFilterFilelistDelegate filelistfilter = null, BlockVolumePostProcessor blockprocessor = null)
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{
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if (!m_options.RepairOnlyPaths)
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throw new UserInformationException(string.Format("Can only update with paths, try setting {0}", "--repair-only-paths"), "RepairUpdateRequiresPathsOnly");
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using(var db = new LocalDatabase(m_options.Dbpath, "Recreate", true))
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{
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m_result.SetDatabase(db);
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if (db.FindMatchingFilesets(m_options.Time, m_options.Version).Any())
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throw new UserInformationException("The version(s) being updated to, already exists", "UpdateVersionAlreadyExists");
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// Mark as incomplete
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db.PartiallyRecreated = true;
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Utility.UpdateOptionsFromDb(db, m_options, null);
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DoRun(db, true, filter, filelistfilter, blockprocessor);
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db.WriteResults();
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}
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}
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/// <summary>
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/// Run the recreate procedure
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/// </summary>
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/// <param name="dbparent">The database to restore into</param>
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/// <param name="updating">True if this is an update call, false otherwise</param>
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/// <param name="filter">A filter that can be used to disregard certain remote files, intended to be used to select a certain filelist</param>
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/// <param name="filelistfilter">Filters the files in a filelist to prevent downloading unwanted data</param>
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/// <param name="blockprocessor">A callback hook that can be used to work with downloaded block volumes, intended to be use to recover data blocks while processing blocklists</param>
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internal void DoRun(LocalDatabase dbparent, bool updating, Library.Utility.IFilter filter = null, NumberedFilterFilelistDelegate filelistfilter = null, BlockVolumePostProcessor blockprocessor = null)
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{
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m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Recreate_Running);
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//We build a local database in steps.
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using(var restoredb = new LocalRecreateDatabase(dbparent, m_options))
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using(var backend = new BackendManager(m_backendurl, m_options, m_result.BackendWriter, restoredb))
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{
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restoredb.RepairInProgress = true;
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var autoDetectBlockSize = !(m_options.HasBlocksize && restoredb.GetDbOptions().ContainsKey("blocksize"));
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var volumeIds = new Dictionary<string, long>();
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var rawlist = backend.List();
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//First step is to examine the remote storage to see what
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// kind of data we can find
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var remotefiles =
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(from x in rawlist
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let n = VolumeBase.ParseFilename(x)
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where
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n != null
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&&
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n.Prefix == m_options.Prefix
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select n).ToArray(); //ToArray() ensures that we do not remote-request it multiple times
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if (remotefiles.Length == 0)
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{
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if (rawlist.Count == 0)
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throw new UserInformationException("No files were found at the remote location, perhaps the target url is incorrect?", "EmptyRemoteLocation");
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else
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{
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var tmp =
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(from x in rawlist
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let n = VolumeBase.ParseFilename(x)
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where
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n != null
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select n.Prefix).ToArray();
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var types = tmp.Distinct().ToArray();
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if (tmp.Length == 0)
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throw new UserInformationException(string.Format("Found {0} files at the remote storage, but none that could be parsed", rawlist.Count), "EmptyRemoteLocation");
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else if (types.Length == 1)
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throw new UserInformationException(string.Format("Found {0} parse-able files with the prefix {1}, did you forget to set the backup prefix?", tmp.Length, types[0]), "EmptyRemoteLocationWithPrefix");
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else
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throw new UserInformationException(string.Format("Found {0} parse-able files (of {1} files) with different prefixes: {2}, did you forget to set the backup prefix?", tmp.Length, rawlist.Count, string.Join(", ", types)), "EmptyRemoteLocationWithPrefix");
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}
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}
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//Then we select the filelist we should work with,
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// and create the filelist table to fit
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IEnumerable<IParsedVolume> filelists =
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from n in remotefiles
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where n.FileType == RemoteVolumeType.Files
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orderby n.Time descending
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select n;
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if (!filelists.Any())
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throw new UserInformationException("No filelists found on the remote destination", "EmptyRemoteLocation");
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if (filelistfilter != null)
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filelists = filelistfilter(filelists).Select(x => x.Value).ToArray();
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if (!filelists.Any())
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throw new UserInformationException("No filelists", "NoMatchingRemoteFilelists");
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// If we are updating, all files should be accounted for
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foreach(var fl in remotefiles)
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volumeIds[fl.File.Name] = updating ? restoredb.GetRemoteVolumeID(fl.File.Name) : restoredb.RegisterRemoteVolume(fl.File.Name, fl.FileType, fl.File.Size, RemoteVolumeState.Uploaded);
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var hasUpdatedOptions = false;
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if (updating)
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{
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Utility.UpdateOptionsFromDb(restoredb, m_options);
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Utility.VerifyParameters(restoredb, m_options);
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}
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//Record all blocksets and files needed
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using(var tr = restoredb.BeginTransaction())
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{
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var filelistWork = (from n in filelists orderby n.Time select new RemoteVolume(n.File) as IRemoteVolume).ToList();
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Logging.Log.WriteInformationMessage(LOGTAG, "RebuildStarted", "Rebuild database started, downloading {0} filelists", filelistWork.Count);
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var progress = 0;
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// Register the files we are working with, if not already updated
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if (updating)
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{
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foreach(var n in filelists)
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if (volumeIds[n.File.Name] == -1)
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volumeIds[n.File.Name] = restoredb.RegisterRemoteVolume(n.File.Name, n.FileType, RemoteVolumeState.Uploaded, n.File.Size, new TimeSpan(0), tr);
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}
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var isFirstFilelist = true;
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var blocksize = m_options.Blocksize;
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var hashes_pr_block = blocksize / m_options.BlockhashSize;
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foreach(var entry in new AsyncDownloader(filelistWork, backend))
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try
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{
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if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
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{
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backend.WaitForComplete(restoredb, null);
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m_result.EndTime = DateTime.UtcNow;
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return;
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}
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progress++;
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if (filelistWork.Count == 1 && m_options.RepairOnlyPaths)
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m_result.OperationProgressUpdater.UpdateProgress(0.5f);
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else
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m_result.OperationProgressUpdater.UpdateProgress(((float)progress / filelistWork.Count()) * (m_options.RepairOnlyPaths ? 1f : 0.2f));
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using(var tmpfile = entry.TempFile)
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{
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isFirstFilelist = false;
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if (entry.Hash != null && entry.Size > 0)
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restoredb.UpdateRemoteVolume(entry.Name, RemoteVolumeState.Verified, entry.Size, entry.Hash, tr);
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var parsed = VolumeBase.ParseFilename(entry.Name);
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if (!hasUpdatedOptions && (!updating || autoDetectBlockSize))
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{
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VolumeReaderBase.UpdateOptionsFromManifest(parsed.CompressionModule, tmpfile, m_options);
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hasUpdatedOptions = true;
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// Recompute the cached sizes
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blocksize = m_options.Blocksize;
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hashes_pr_block = blocksize / m_options.BlockhashSize;
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}
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// Create timestamped operations based on the file timestamp
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var filesetid = restoredb.CreateFileset(volumeIds[entry.Name], parsed.Time, tr);
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using(var filelistreader = new FilesetVolumeReader(parsed.CompressionModule, tmpfile, m_options))
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foreach(var fe in filelistreader.Files.Where(x => Library.Utility.FilterExpression.Matches(filter, x.Path)))
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{
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try
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{
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var expectedmetablocks = (fe.Metasize + blocksize - 1) / blocksize;
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var expectedmetablocklisthashes = (expectedmetablocks + hashes_pr_block - 1) / hashes_pr_block;
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if (expectedmetablocks <= 1) expectedmetablocklisthashes = 0;
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var metadataid = long.MinValue;
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switch (fe.Type)
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{
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case FilelistEntryType.Folder:
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metadataid = restoredb.AddMetadataset(fe.Metahash, fe.Metasize, fe.MetaBlocklistHashes, expectedmetablocklisthashes, tr);
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restoredb.AddDirectoryEntry(filesetid, fe.Path, fe.Time, metadataid, tr);
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break;
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case FilelistEntryType.File:
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var expectedblocks = (fe.Size + blocksize - 1) / blocksize;
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var expectedblocklisthashes = (expectedblocks + hashes_pr_block - 1) / hashes_pr_block;
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if (expectedblocks <= 1) expectedblocklisthashes = 0;
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var blocksetid = restoredb.AddBlockset(fe.Hash, fe.Size, fe.BlocklistHashes, expectedblocklisthashes, tr);
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metadataid = restoredb.AddMetadataset(fe.Metahash, fe.Metasize, fe.MetaBlocklistHashes, expectedmetablocklisthashes, tr);
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restoredb.AddFileEntry(filesetid, fe.Path, fe.Time, blocksetid, metadataid, tr);
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if (fe.Size <= blocksize)
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{
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if (!string.IsNullOrWhiteSpace(fe.Blockhash))
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restoredb.AddSmallBlocksetLink(fe.Hash, fe.Blockhash, fe.Blocksize, tr);
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else if (m_options.BlockHashAlgorithm == m_options.FileHashAlgorithm)
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restoredb.AddSmallBlocksetLink(fe.Hash, fe.Hash, fe.Size, tr);
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else
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Logging.Log.WriteWarningMessage(LOGTAG, "MissingBlockHash", null, "No block hash found for file: {0}", fe.Path);
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}
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break;
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case FilelistEntryType.Symlink:
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metadataid = restoredb.AddMetadataset(fe.Metahash, fe.Metasize, fe.MetaBlocklistHashes, expectedmetablocklisthashes, tr);
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restoredb.AddSymlinkEntry(filesetid, fe.Path, fe.Time, metadataid, tr);
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break;
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default:
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Logging.Log.WriteWarningMessage(LOGTAG, "SkippingUnknownFileEntry", null, "Skipping file-entry with unknown type {0}: {1} ", fe.Type, fe.Path);
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break;
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}
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if (fe.Metasize <= blocksize && (fe.Type == FilelistEntryType.Folder || fe.Type == FilelistEntryType.File || fe.Type == FilelistEntryType.Symlink))
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{
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if (!string.IsNullOrWhiteSpace(fe.Metablockhash))
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restoredb.AddSmallBlocksetLink(fe.Metahash, fe.Metablockhash, fe.Metasize, tr);
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else if (m_options.BlockHashAlgorithm == m_options.FileHashAlgorithm)
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restoredb.AddSmallBlocksetLink(fe.Metahash, fe.Metahash, fe.Metasize, tr);
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else
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Logging.Log.WriteWarningMessage(LOGTAG, "MissingMetadataBlockHash", null, "No block hash found for file metadata: {0}", fe.Path);
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}
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}
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catch (Exception ex)
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{
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Logging.Log.WriteWarningMessage(LOGTAG, "FileEntryProcessingFailed", ex, "Failed to process file-entry: {0}", fe.Path);
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}
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}
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}
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}
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catch (Exception ex)
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{
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Logging.Log.WriteWarningMessage(LOGTAG, "FileProcessingFailed", ex, "Failed to process file: {0}", entry.Name);
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if (ex is System.Threading.ThreadAbortException)
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{
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m_result.EndTime = DateTime.UtcNow;
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throw;
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}
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if (isFirstFilelist && ex is System.Security.Cryptography.CryptographicException)
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{
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m_result.EndTime = DateTime.UtcNow;
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throw;
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}
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if (m_options.UnittestMode)
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throw;
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}
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//Make sure we write the config
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if (!updating)
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Utility.VerifyParameters(restoredb, m_options, tr);
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using(new Logging.Timer(LOGTAG, "CommitUpdateFilesetFromRemote", "CommitUpdateFilesetFromRemote"))
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tr.Commit();
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}
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if (!m_options.RepairOnlyPaths)
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{
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var hashalg = Library.Utility.HashAlgorithmHelper.Create(m_options.BlockHashAlgorithm);
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if (hashalg == null)
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throw new UserInformationException(Strings.Common.InvalidHashAlgorithm(m_options.BlockHashAlgorithm), "BlockHashAlgorithmNotSupported");
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var hashsize = hashalg.HashSize / 8;
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//Grab all index files, and update the block table
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using(var tr = restoredb.BeginTransaction())
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{
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var indexfiles = (
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from n in remotefiles
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where n.FileType == RemoteVolumeType.Index
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select new RemoteVolume(n.File) as IRemoteVolume).ToList();
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Logging.Log.WriteInformationMessage(LOGTAG, "FilelistsRestored", "Filelists restored, downloading {0} index files", indexfiles.Count);
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var progress = 0;
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foreach(var sf in new AsyncDownloader(indexfiles, backend))
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try
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{
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if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
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{
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backend.WaitForComplete(restoredb, null);
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m_result.EndTime = DateTime.UtcNow;
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return;
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}
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progress++;
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m_result.OperationProgressUpdater.UpdateProgress((((float)progress / indexfiles.Count) * 0.5f) + 0.2f);
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using(var tmpfile = sf.TempFile)
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{
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if (sf.Hash != null && sf.Size > 0)
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restoredb.UpdateRemoteVolume(sf.Name, RemoteVolumeState.Verified, sf.Size, sf.Hash, tr);
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using(var svr = new IndexVolumeReader(RestoreHandler.GetCompressionModule(sf.Name), tmpfile, m_options, hashsize))
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{
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foreach(var a in svr.Volumes)
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{
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var filename = a.Filename;
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var volumeID = restoredb.GetRemoteVolumeID(filename);
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// No such file
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if (volumeID < 0)
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volumeID = ProbeForMatchingFilename(ref filename, restoredb);
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var missing = false;
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// Still broken, register a missing item
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if (volumeID < 0)
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{
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var p = VolumeBase.ParseFilename(filename);
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if (p == null)
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throw new Exception(string.Format("Unable to parse filename: {0}", filename));
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Logging.Log.WriteErrorMessage(LOGTAG, "MissingFileDetected", null, "Remote file referenced as {0} by {1}, but not found in list, registering a missing remote file", filename, sf.Name);
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missing = true;
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volumeID = restoredb.RegisterRemoteVolume(filename, p.FileType, RemoteVolumeState.Temporary, tr);
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}
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//Add all block/volume mappings
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foreach(var b in a.Blocks)
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restoredb.UpdateBlock(b.Key, b.Value, volumeID, tr);
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restoredb.UpdateRemoteVolume(filename, missing ? RemoteVolumeState.Temporary : RemoteVolumeState.Verified, a.Length, a.Hash, tr);
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restoredb.AddIndexBlockLink(restoredb.GetRemoteVolumeID(sf.Name), volumeID, tr);
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}
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//If there are blocklists in the index file, update the blocklists
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foreach(var b in svr.BlockLists)
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restoredb.UpdateBlockset(b.Hash, b.Blocklist, tr);
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}
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}
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}
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catch (Exception ex)
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{
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//Not fatal
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Logging.Log.WriteErrorMessage(LOGTAG, "IndexFileProcessingFailed", ex, "Failed to process index file: {0}", sf.Name);
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if (ex is System.Threading.ThreadAbortException)
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{
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m_result.EndTime = DateTime.UtcNow;
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throw;
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}
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if (m_options.UnittestMode)
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throw;
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}
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using(new Logging.Timer(LOGTAG, "CommitRecreateDb", "CommitRecreatedDb"))
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tr.Commit();
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// TODO: In some cases, we can avoid downloading all index files,
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// if we are lucky and pick the right ones
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}
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// In some cases we have a stale reference from an index file to a deleted block file
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if (!m_options.UnittestMode)
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restoredb.CleanupMissingVolumes();
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// We have now grabbed as much information as possible,
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// if we are still missing data, we must now fetch block files
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restoredb.FindMissingBlocklistHashes(hashsize, m_options.Blocksize, null);
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//We do this in three passes
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for(var i = 0; i < 3; i++)
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{
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// Grab the list matching the pass type
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var lst = restoredb.GetMissingBlockListVolumes(i, m_options.Blocksize, hashsize).ToList();
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if (lst.Count > 0)
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{
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var fullist = ": " + string.Join(", ", lst.Select(x => x.Name));
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switch (i)
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{
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case 0:
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Logging.Log.WriteVerboseMessage(LOGTAG, "ProcessingRequiredBlocklistVolumes", "Processing required {0} blocklist volumes{1}", lst.Count, fullist);
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Logging.Log.WriteInformationMessage(LOGTAG, "ProcessingRequiredBlocklistVolumes", "Processing required {0} blocklist volumes{1}", lst.Count, m_options.FullResult ? fullist : string.Empty);
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break;
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case 1:
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Logging.Log.WriteVerboseMessage(LOGTAG, "ProbingCandicateBlocklistVolumes", "Probing {0} candidate blocklist volumes{1}", lst.Count, fullist);
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Logging.Log.WriteInformationMessage(LOGTAG, "ProbingCandicateBlocklistVolumes", "Probing {0} candidate blocklist volumes{1}", lst.Count, m_options.FullResult ? fullist : string.Empty);
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break;
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default:
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Logging.Log.WriteVerboseMessage(LOGTAG, "ProcessingAllBlocklistVolumes", "Processing all of the {0} volumes for blocklists{1}", lst.Count, fullist);
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Logging.Log.WriteVerboseMessage(LOGTAG, "ProcessingAllBlocklistVolumes", "Processing all of the {0} volumes for blocklists{1}", lst.Count, m_options.FullResult ? fullist : string.Empty);
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break;
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}
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}
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var progress = 0;
|
|
foreach (var sf in new AsyncDownloader(lst, backend))
|
|
{
|
|
try
|
|
{
|
|
using (var tmpfile = sf.TempFile)
|
|
using (var rd = new BlockVolumeReader(RestoreHandler.GetCompressionModule(sf.Name), tmpfile, m_options))
|
|
using (var tr = restoredb.BeginTransaction())
|
|
{
|
|
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
|
|
{
|
|
backend.WaitForComplete(restoredb, null);
|
|
m_result.EndTime = DateTime.UtcNow;
|
|
return;
|
|
}
|
|
|
|
progress++;
|
|
m_result.OperationProgressUpdater.UpdateProgress((((float)progress / lst.Count) * 0.1f) + 0.7f + (i * 0.1f));
|
|
|
|
var volumeid = restoredb.GetRemoteVolumeID(sf.Name);
|
|
|
|
restoredb.UpdateRemoteVolume(sf.Name, RemoteVolumeState.Uploaded, sf.Size, sf.Hash, tr);
|
|
|
|
// Update the block table so we know about the block/volume map
|
|
foreach (var h in rd.Blocks)
|
|
restoredb.UpdateBlock(h.Key, h.Value, volumeid, tr);
|
|
|
|
// Grab all known blocklists from the volume
|
|
foreach (var blocklisthash in restoredb.GetBlockLists(volumeid))
|
|
restoredb.UpdateBlockset(blocklisthash, rd.ReadBlocklist(blocklisthash, hashsize), tr);
|
|
|
|
// Update tables so we know if we are done
|
|
restoredb.FindMissingBlocklistHashes(hashsize, m_options.Blocksize, tr);
|
|
|
|
using (new Logging.Timer(LOGTAG, "CommitRestoredBlocklist", "CommitRestoredBlocklist"))
|
|
tr.Commit();
|
|
|
|
//At this point we can patch files with data from the block volume
|
|
if (blockprocessor != null)
|
|
blockprocessor(sf.Name, rd);
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logging.Log.WriteWarningMessage(LOGTAG, "FailedRebuildingWithFile", ex, "Failed to use information from {0} to rebuild database: {1}", sf.Name, ex.Message);
|
|
if (m_options.UnittestMode)
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
backend.WaitForComplete(restoredb, null);
|
|
|
|
// In some cases we have a stale reference from an index file to a deleted block file
|
|
if (!m_options.UnittestMode)
|
|
restoredb.CleanupMissingVolumes();
|
|
|
|
if (m_options.RepairOnlyPaths)
|
|
{
|
|
Logging.Log.WriteInformationMessage(LOGTAG, "RecreateOrUpdateOnly", "Recreate/path-update completed, not running consistency checks");
|
|
}
|
|
else
|
|
{
|
|
Logging.Log.WriteInformationMessage(LOGTAG, "RecreateCompletedCheckingDatabase", "Recreate completed, verifying the database consistency");
|
|
|
|
//All done, we must verify that we have all blocklist fully intact
|
|
// if this fails, the db will not be deleted, so it can be used,
|
|
// except to continue a backup
|
|
m_result.EndTime = DateTime.UtcNow;
|
|
|
|
using (var lbfdb = new LocalListBrokenFilesDatabase(restoredb))
|
|
{
|
|
var broken = lbfdb.GetBrokenFilesets(new DateTime(0), null, null).Count();
|
|
if (broken != 0)
|
|
throw new UserInformationException(string.Format("Recreated database has missing blocks and {0} broken filelists. Consider using \"{1}\" and \"{2}\" to purge broken data from the remote store and the database.", broken, "list-broken-files", "purge-broken-files"), "DatabaseIsBrokenConsiderPurge");
|
|
}
|
|
|
|
restoredb.VerifyConsistency(m_options.Blocksize, m_options.BlockhashSize, true, null);
|
|
|
|
Logging.Log.WriteInformationMessage(LOGTAG, "RecreateCompleted", "Recreate completed, and consistency checks completed, marking database as complete");
|
|
|
|
restoredb.RepairInProgress = false;
|
|
}
|
|
|
|
m_result.EndTime = DateTime.UtcNow;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Look in the database for filenames similar to the current filename, but with a different compression and encryption module
|
|
/// </summary>
|
|
/// <returns>The volume id of the item</returns>
|
|
/// <param name="filename">The filename read and written</param>
|
|
/// <param name="restoredb">The database to query</param>
|
|
public long ProbeForMatchingFilename(ref string filename, LocalRestoreDatabase restoredb)
|
|
{
|
|
var p = VolumeBase.ParseFilename(filename);
|
|
if (p != null)
|
|
{
|
|
foreach(var compmodule in Library.DynamicLoader.CompressionLoader.Keys)
|
|
foreach(var encmodule in Library.DynamicLoader.EncryptionLoader.Keys.Union(new string[] { "" }))
|
|
{
|
|
var testfilename = VolumeBase.GenerateFilename(p.FileType, p.Prefix, p.Guid, p.Time, compmodule, encmodule);
|
|
var tvid = restoredb.GetRemoteVolumeID(testfilename);
|
|
if (tvid >= 0)
|
|
{
|
|
Logging.Log.WriteWarningMessage(LOGTAG, "RewritingFilenameMapping", null, "Unable to find volume {0}, but mapping to matching file {1}", filename, testfilename);
|
|
filename = testfilename;
|
|
return tvid;
|
|
}
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
}
|
|
}
|
|
}
|