243 lines
12 KiB
C#
243 lines
12 KiB
C#
// Copyright (C) 2025, The Duplicati Team
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// https://duplicati.com, hello@duplicati.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#nullable enable
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using System;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using Duplicati.Library.Utility;
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using Microsoft.Data.Sqlite;
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namespace Duplicati.Library.Main.Database
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{
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internal class LocalPurgeDatabase : LocalDeleteDatabase
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{
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public static new async Task<LocalPurgeDatabase> CreateAsync(string path, long pagecachesize)
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{
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var db = new LocalPurgeDatabase();
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db = (LocalPurgeDatabase)await CreateLocalDatabaseAsync(db, path, "ListBrokenFiles", false, pagecachesize);
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db.ShouldCloseConnection = true;
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return db;
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}
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public static new async Task<LocalPurgeDatabase> CreateAsync(LocalDatabase dbparent)
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{
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var dbnew = new LocalPurgeDatabase();
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dbnew = (LocalPurgeDatabase)await CreateLocalDatabaseAsync(dbparent, dbnew);
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return dbnew;
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}
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public async Task<string> GetRemoteVolumeNameForFileset(long id)
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{
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using var cmd = m_connection.CreateCommand(@"SELECT ""B"".""Name"" FROM ""Fileset"" A, ""RemoteVolume"" B WHERE ""A"".""VolumeID"" = ""B"".""ID"" AND ""A"".""ID"" = @FilesetId ")
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.SetParameterValue("@FilesetId", id);
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using (var rd = await cmd.ExecuteReaderAsync())
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if (!await rd.ReadAsync())
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throw new Exception($"No remote volume found for fileset with id {id}");
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else
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return rd.ConvertValueToString(0) ?? throw new Exception($"Remote volume name for fileset with id {id} is null");
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}
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internal async Task<long> CountOrphanFiles()
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{
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using (var cmd = m_connection.CreateCommand())
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using (var rd = await cmd.ExecuteReaderAsync(@"SELECT COUNT(*) FROM ""FileLookup"" WHERE ""ID"" NOT IN (SELECT DISTINCT ""FileID"" FROM ""FilesetEntry"")"))
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if (await rd.ReadAsync())
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return rd.ConvertValueToInt64(0, 0);
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else
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return 0;
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}
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public interface ITemporaryFileset : IDisposable
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{
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long ParentID { get; }
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long RemovedFileCount { get; }
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long RemovedFileSize { get; }
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long UpdatedFileCount { get; }
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Task ApplyFilter(Library.Utility.IFilter filter);
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Task ApplyFilter(Func<SqliteCommand, long, string, int> filtercommand);
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Task<Tuple<long, long>> ConvertToPermanentFileset(string name, DateTime timestamp, bool isFullBackup);
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IAsyncEnumerable<KeyValuePair<string, long>> ListAllDeletedFiles();
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}
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private class TemporaryFileset : ITemporaryFileset
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{
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private string m_tablename = null!;
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private LocalDatabase m_db = null!;
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public long ParentID { get; private set; }
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public long RemovedFileCount { get; private set; }
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public long RemovedFileSize { get; private set; }
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public long UpdatedFileCount { get; private set; }
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[Obsolete("Calling this constructor will throw an exception. Use CreateAsync instead.")]
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public TemporaryFileset(long parentid, LocalPurgeDatabase parentdb, SqliteConnection connection, SqliteTransaction transaction)
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{
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throw new NotImplementedException("Use CreateAsync instead");
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}
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private TemporaryFileset() { }
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public static async Task<TemporaryFileset> CreateAsync(long parentid, LocalDatabase db)
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{
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var tempf = new TemporaryFileset()
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{
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ParentID = parentid,
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m_db = db,
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m_tablename = "TempDeletedFilesTable-" + Library.Utility.Utility.ByteArrayAsHexString(Guid.NewGuid().ToByteArray())
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};
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using (var cmd = db.Connection.CreateCommand())
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await cmd.ExecuteNonQueryAsync($@"CREATE TEMPORARY TABLE ""{tempf.m_tablename}"" (""FileID"" INTEGER PRIMARY KEY) ");
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return tempf;
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}
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public async Task ApplyFilter(Func<SqliteCommand, long, string, int> filtercommand)
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{
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int updated;
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using (var cmd = m_db.Connection.CreateCommand())
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updated = filtercommand(cmd, ParentID, m_tablename);
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await PostFilterChecks(updated);
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}
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public async Task ApplyFilter(Library.Utility.IFilter filter)
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{
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if (Library.Utility.Utility.IsFSCaseSensitive && filter is FilterExpression expression && expression.Type == Duplicati.Library.Utility.FilterType.Simple)
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{
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// File list based
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// unfortunately we cannot do this if the filesystem is not case-sensitive as
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// SQLite only supports ASCII compares
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var p = expression.GetSimpleList();
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var filenamestable = "Filenames-" + Library.Utility.Utility.ByteArrayAsHexString(Guid.NewGuid().ToByteArray());
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using (var cmd = m_db.Connection.CreateCommand())
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{
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await cmd.ExecuteNonQueryAsync($@"CREATE TEMPORARY TABLE ""{filenamestable}"" (""Path"" TEXT NOT NULL) ");
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await cmd.SetCommandAndParameters($@"INSERT INTO ""{filenamestable}"" (""Path"") VALUES (@Path)")
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.PrepareAsync();
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foreach (var s in p)
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await cmd.SetParameterValue("@Path", s)
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.ExecuteNonQueryAsync();
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await cmd.SetCommandAndParameters($@"INSERT INTO ""{m_tablename}"" (""FileID"") SELECT DISTINCT ""A"".""FileID"" FROM ""FilesetEntry"" A, ""File"" B WHERE ""A"".""FilesetID"" = @FilesetId AND ""A"".""FileID"" = ""B"".""ID"" AND ""B"".""Path"" IN ""{filenamestable}""")
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.SetParameterValue("@FilesetId", ParentID)
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.ExecuteNonQueryAsync();
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await cmd.ExecuteNonQueryAsync($@"DROP TABLE IF EXISTS ""{filenamestable}"" ");
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}
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}
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else
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{
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// Do row-wise iteration
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var values = new object[2];
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using (var cmd = m_db.Connection.CreateCommand())
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using (var cmd2 = m_db.Connection.CreateCommand())
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{
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cmd2.SetCommandAndParameters($@"INSERT INTO ""{m_tablename}"" (""FileID"") VALUES (@FileId)");
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cmd.SetCommandAndParameters(@"SELECT ""B"".""Path"", ""A"".""FileID"" FROM ""FilesetEntry"" A, ""File"" B WHERE ""A"".""FilesetID"" = @FilesetId AND ""A"".""FileID"" = ""B"".""ID"" ")
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.SetParameterValue("@FilesetId", ParentID);
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using (var rd = await cmd.ExecuteReaderAsync())
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while (await rd.ReadAsync())
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{
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rd.GetValues(values);
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if (values[0] != null && values[0] != DBNull.Value && Library.Utility.FilterExpression.Matches(filter, values[0].ToString()))
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{
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await cmd2.SetParameterValue("@FileId", values[1])
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.ExecuteNonQueryAsync();
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}
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}
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}
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}
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await PostFilterChecks(0);
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}
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private async Task PostFilterChecks(int updated)
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{
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using (var cmd = m_db.Connection.CreateCommand())
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{
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UpdatedFileCount = updated;
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RemovedFileCount = await cmd.ExecuteScalarInt64Async($@"SELECT COUNT(*) FROM ""{m_tablename}""", 0);
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RemovedFileSize = await cmd.ExecuteScalarInt64Async($@"
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SELECT
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SUM(""C"".""Length"")
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FROM
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""{m_tablename}"" A, ""FileLookup"" B, ""Blockset"" C, ""Metadataset"" D
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WHERE
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""A"".""FileID"" = ""B"".""ID""
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AND(""B"".""BlocksetID"" = ""C"".""ID"" OR(""B"".""MetadataID"" = ""D"".""ID"" AND ""D"".""BlocksetID"" = ""C"".""ID""))
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", 0);
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var filesetcount = await cmd.ExecuteScalarInt64Async($@"SELECT COUNT(*) FROM ""FilesetEntry"" WHERE ""FilesetID"" = {ParentID}", 0);
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if (filesetcount == RemovedFileCount)
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throw new Interface.UserInformationException($"Refusing to purge {RemovedFileCount} files from fileset with ID {ParentID}, as that would remove the entire fileset.\nTo delete a fileset, use the \"delete\" command.", "PurgeWouldRemoveEntireFileset");
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}
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}
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public async Task<Tuple<long, long>> ConvertToPermanentFileset(string name, DateTime timestamp, bool isFullBackup)
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{
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var remotevolid = await m_db.RegisterRemoteVolume(name, RemoteVolumeType.Files, RemoteVolumeState.Temporary);
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var filesetid = await m_db.CreateFileset(remotevolid, timestamp);
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await m_db.UpdateFullBackupStateInFileset(filesetid, isFullBackup);
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using (var cmd = m_db.Connection.CreateCommand())
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await cmd.SetCommandAndParameters($@"INSERT INTO ""FilesetEntry"" (""FilesetID"", ""FileID"", ""Lastmodified"") SELECT @TargetFilesetId, ""FileID"", ""LastModified"" FROM ""FilesetEntry"" WHERE ""FilesetID"" = @SourceFilesetId AND ""FileID"" NOT IN ""{m_tablename}"" ")
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.SetParameterValue("@TargetFilesetId", filesetid)
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.SetParameterValue("@SourceFilesetId", ParentID)
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.ExecuteNonQueryAsync();
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return new Tuple<long, long>(remotevolid, filesetid);
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}
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public async IAsyncEnumerable<KeyValuePair<string, long>> ListAllDeletedFiles()
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{
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using (var cmd = m_db.Connection.CreateCommand())
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using (var rd = await cmd.ExecuteReaderAsync($@"SELECT ""B"".""Path"", ""C"".""Length"" FROM ""{m_tablename}"" A, ""File"" B, ""Blockset"" C WHERE ""A"".""FileID"" = ""B"".""ID"" AND ""B"".""BlocksetID"" = ""C"".""ID"" "))
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while (await rd.ReadAsync())
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yield return new KeyValuePair<string, long>(rd.ConvertValueToString(0) ?? "", rd.ConvertValueToInt64(1));
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}
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public void Dispose()
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{
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DisposeAsync().Await();
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}
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public async Task DisposeAsync()
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{
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try
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{
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using (var cmd = m_db.Connection.CreateCommand())
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await cmd.ExecuteNonQueryAsync($@"DROP TABLE IF EXISTS ""{m_tablename}""");
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}
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catch
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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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