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// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Collections.Generic;
namespace Duplicati.Library.Main.Database
{
internal class LocalListChangesDatabase : LocalDatabase
{
public LocalListChangesDatabase(string path)
: base(path, "ListChanges", false)
{
ShouldCloseConnection = true;
}
public interface IStorageHelper : IDisposable
{
void AddElement(string path, string filehash, string metahash, long size, Library.Interface.ListChangesElementType type, bool asNew);
void AddFromDb(long filesetId, bool asNew, Library.Utility.IFilter filter);
IChangeCountReport CreateChangeCountReport();
IChangeSizeReport CreateChangeSizeReport();
IEnumerable<Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>> CreateChangedFileReport();
}
public interface IChangeCountReport
{
long AddedFolders { get; }
long AddedSymlinks { get; }
long AddedFiles { get; }
long DeletedFolders { get; }
long DeletedSymlinks { get; }
long DeletedFiles { get; }
long ModifiedFolders { get; }
long ModifiedSymlinks { get; }
long ModifiedFiles { get; }
}
public interface IChangeSizeReport
{
long AddedSize { get; }
long DeletedSize { get; }
long PreviousSize { get; }
long CurrentSize { get; }
}
internal class ChangeCountReport : IChangeCountReport
{
public long AddedFolders { get; internal set; }
public long AddedSymlinks { get; internal set; }
public long AddedFiles { get; internal set; }
public long DeletedFolders { get; internal set; }
public long DeletedSymlinks { get; internal set; }
public long DeletedFiles { get; internal set; }
public long ModifiedFolders { get; internal set; }
public long ModifiedSymlinks { get; internal set; }
public long ModifiedFiles { get; internal set; }
}
internal class ChangeSizeReport : IChangeSizeReport
{
public long AddedSize { get; internal set; }
public long DeletedSize { get; internal set; }
public long PreviousSize { get; internal set; }
public long CurrentSize { get; internal set; }
}
private class StorageHelper : IStorageHelper
{
private System.Data.IDbConnection m_connection;
private System.Data.IDbTransaction m_transaction;
private System.Data.IDbCommand m_insertPreviousElementCommand;
private System.Data.IDbCommand m_insertCurrentElementCommand;
private string m_previousTable;
private string m_currentTable;
public StorageHelper(System.Data.IDbConnection con)
{
m_connection = con;
m_previousTable = "Previous-" + Library.Utility.Utility.ByteArrayAsHexString(Guid.NewGuid().ToByteArray());
m_currentTable = "Current-" + Library.Utility.Utility.ByteArrayAsHexString(Guid.NewGuid().ToByteArray());
m_transaction = m_connection.BeginTransaction();
using(var cmd = m_connection.CreateCommand())
{
cmd.Transaction = m_transaction;
cmd.ExecuteNonQuery(string.Format(@"CREATE TEMPORARY TABLE ""{0}"" (""Path"" TEXT NOT NULL, ""FileHash"" TEXT NULL, ""MetaHash"" TEXT NOT NULL, ""Size"" INTEGER NOT NULL, ""Type"" INTEGER NOT NULL) ", m_previousTable));
cmd.ExecuteNonQuery(string.Format(@"CREATE TEMPORARY TABLE ""{0}"" (""Path"" TEXT NOT NULL, ""FileHash"" TEXT NULL, ""MetaHash"" TEXT NOT NULL, ""Size"" INTEGER NOT NULL, ""Type"" INTEGER NOT NULL) ", m_currentTable));
}
m_insertPreviousElementCommand = m_connection.CreateCommand();
m_insertPreviousElementCommand.Transaction = m_transaction;
m_insertPreviousElementCommand.CommandText = string.Format(@"INSERT INTO ""{0}"" (""Path"", ""FileHash"", ""MetaHash"", ""Size"", ""Type"") VALUES (?,?,?,?,?)", m_previousTable);
m_insertPreviousElementCommand.AddParameters(5);
m_insertCurrentElementCommand = m_connection.CreateCommand();
m_insertCurrentElementCommand.Transaction = m_transaction;
m_insertCurrentElementCommand.CommandText = string.Format(@"INSERT INTO ""{0}"" (""Path"", ""FileHash"", ""MetaHash"", ""Size"", ""Type"") VALUES (?,?,?,?,?)", m_currentTable);
m_insertCurrentElementCommand.AddParameters(5);
}
public void AddFromDb(long filesetId, bool asNew, Library.Utility.IFilter filter)
{
var tablename = asNew ? m_currentTable : m_previousTable;
var folders = string.Format(@"SELECT ""File"".""Path"" AS ""Path"", NULL AS ""FileHash"", ""Blockset"".""Fullhash"" AS ""MetaHash"", -1 AS ""Size"", {0} AS ""Type"", ""FilesetEntry"".""FilesetID"" AS ""FilesetID"" FROM ""File"",""FilesetEntry"",""Metadataset"",""Blockset"" WHERE ""File"".""ID"" = ""FilesetEntry"".""FileID"" AND ""File"".""BlocksetID"" = -100 AND ""Metadataset"".""ID""=""File"".""MetadataID"" AND ""Metadataset"".""BlocksetID"" = ""Blockset"".""ID"" ", (int)Library.Interface.ListChangesElementType.Folder);
var symlinks = string.Format(@"SELECT ""File"".""Path"" AS ""Path"", NULL AS ""FileHash"", ""Blockset"".""Fullhash"" AS ""MetaHash"", -1 AS ""Size"", {0} AS ""Type"", ""FilesetEntry"".""FilesetID"" AS ""FilesetID"" FROM ""File"",""FilesetEntry"",""Metadataset"",""Blockset"" WHERE ""File"".""ID"" = ""FilesetEntry"".""FileID"" AND ""File"".""BlocksetID"" = -200 AND ""Metadataset"".""ID""=""File"".""MetadataID"" AND ""Metadataset"".""BlocksetID"" = ""Blockset"".""ID"" ", (int)Library.Interface.ListChangesElementType.Symlink);
var files = string.Format(@"SELECT ""File"".""Path"" AS ""Path"", ""FB"".""FullHash"" AS ""FileHash"", ""MB"".""Fullhash"" AS ""MetaHash"", ""FB"".""Length"" AS ""Size"", {0} AS ""Type"", ""FilesetEntry"".""FilesetID"" AS ""FilesetID"" FROM ""File"",""FilesetEntry"",""Metadataset"",""Blockset"" MB, ""Blockset"" FB WHERE ""File"".""ID"" = ""FilesetEntry"".""FileID"" AND ""File"".""BlocksetID"" >= 0 AND ""Metadataset"".""ID""=""File"".""MetadataID"" AND ""Metadataset"".""BlocksetID"" = ""MB"".""ID"" AND ""File"".""BlocksetID"" = ""FB"".""ID"" ", (int)Library.Interface.ListChangesElementType.File);
var combined = "(" + folders + " UNION " + symlinks + " UNION " + files + ")";
using(var cmd = m_connection.CreateCommand())
{
cmd.Transaction = m_transaction;
if (filter == null || filter.Empty)
{
// Simple case, select everything
cmd.ExecuteNonQuery(string.Format(@"INSERT INTO ""{0}"" (""Path"", ""FileHash"", ""MetaHash"", ""Size"", ""Type"") SELECT ""Path"", ""FileHash"", ""MetaHash"", ""Size"", ""Type"" FROM {1} A WHERE ""A"".""FilesetID"" = ? ", tablename, combined), filesetId);
}
else if (Library.Utility.Utility.IsFSCaseSensitive && filter is Library.Utility.FilterExpression && (filter as Library.Utility.FilterExpression).Type == Duplicati.Library.Utility.FilterType.Simple)
{
// File list based
// unfortunately we cannot do this if the filesystem is case sensitive as
// SQLite only supports ASCII compares
var p = (filter as Library.Utility.FilterExpression).GetSimpleList();
var filenamestable = "Filenames-" + Library.Utility.Utility.ByteArrayAsHexString(Guid.NewGuid().ToByteArray());
cmd.ExecuteNonQuery(string.Format(@"CREATE TEMPORARY TABLE ""{0}"" (""Path"" TEXT NOT NULL) ", filenamestable));
cmd.CommandText = string.Format(@"INSERT INTO ""{0}"" (""Path"") VALUES (?)", filenamestable);
cmd.AddParameter();
foreach(var s in p)
{
cmd.SetParameterValue(0, s);
cmd.ExecuteNonQuery();
}
cmd.ExecuteNonQuery(string.Format(@"INSERT INTO ""{0}"" (""Path"", ""FileHash"", ""MetaHash"", ""Size"", ""Type"") SELECT ""Path"", ""FileHash"", ""MetaHash"", ""Size"", ""Type"" FROM {1} A WHERE ""A"".""FilesetID"" = ? AND ""A"".""Path"" IN (SELECT DISTINCT ""Path"" FROM ""{2}"") ", tablename, combined, filenamestable), filesetId);
cmd.ExecuteNonQuery(string.Format(@"DROP TABLE IF EXISTS ""{0}"" ", filenamestable));
}
else
{
// Do row-wise iteration
object[] values = new object[5];
using(var cmd2 = m_connection.CreateCommand())
{
cmd2.CommandText = string.Format(@"INSERT INTO ""{0}"" (""Path"", ""FileHash"", ""MetaHash"", ""Size"", ""Type"") VALUES (?,?,?,?,?)", tablename);
cmd2.AddParameters(5);
cmd2.Transaction = m_transaction;
using(var rd = cmd.ExecuteReader(string.Format(@"SELECT ""A"".""Path"", ""A"".""FileHash"", ""A"".""MetaHash"", ""A"".""Size"", ""A"".""Type"" FROM {0} A WHERE ""A"".""FilesetID"" = ?", combined), filesetId))
while (rd.Read())
{
rd.GetValues(values);
if (values[0] != null && values[0] != DBNull.Value && Library.Utility.FilterExpression.Matches(filter, values[0].ToString()))
{
cmd2.SetParameterValue(0, values[0]);
cmd2.SetParameterValue(1, values[1]);
cmd2.SetParameterValue(2, values[2]);
cmd2.SetParameterValue(3, values[3]);
cmd2.SetParameterValue(4, values[4]);
cmd2.ExecuteNonQuery();
}
}
}
}
}
}
public void AddElement(string path, string filehash, string metahash, long size, Library.Interface.ListChangesElementType type, bool asNew)
{
var cmd = asNew ? m_insertCurrentElementCommand : m_insertPreviousElementCommand;
cmd.SetParameterValue(0, path);
cmd.SetParameterValue(1, filehash);
cmd.SetParameterValue(2, metahash);
cmd.SetParameterValue(3, size);
cmd.SetParameterValue(4, (int)type);
cmd.ExecuteNonQuery();
}
private static IEnumerable<string> ReaderToStringList(System.Data.IDataReader rd)
{
using(rd)
while (rd.Read())
{
var v = rd.GetValue(0);
if (v == null || v == DBNull.Value)
yield return null;
else
yield return v.ToString();
}
}
private Tuple<string, string, string> GetSqls(bool allTypes)
{
return new Tuple<string, string, string>(
string.Format(@"SELECT ""Path"" FROM ""{0}"" WHERE {2} ""{0}"".""Path"" NOT IN (SELECT ""Path"" FROM ""{1}"")", m_currentTable, m_previousTable, string.Format(allTypes ? "" : @" ""{0}"".""Type"" = ? AND ", m_currentTable)),
string.Format(@"SELECT ""Path"" FROM ""{0}"" WHERE {2} ""{0}"".""Path"" NOT IN (SELECT ""Path"" FROM ""{1}"")", m_previousTable, m_currentTable, string.Format(allTypes ? "" : @" ""{0}"".""Type"" = ? AND ", m_previousTable)),
string.Format(@"SELECT ""{0}"".""Path"" FROM ""{0}"",""{1}"" WHERE {2} ""{0}"".""Path"" = ""{1}"".""Path"" AND (""{0}"".""FileHash"" != ""{1}"".""FileHash"" OR ""{0}"".""MetaHash"" != ""{1}"".""MetaHash"" OR ""{0}"".""Type"" != ""{1}"".""Type"") ", m_currentTable, m_previousTable, string.Format(allTypes ? "" : @" ""{0}"".""Type"" = ? AND ", m_currentTable))
);
}
public IChangeSizeReport CreateChangeSizeReport()
{
var sqls = GetSqls(true);
var added = sqls.Item1;
var deleted = sqls.Item2;
//var modified = sqls.Item3;
using(var cmd = m_connection.CreateCommand())
{
cmd.Transaction = m_transaction;
var result = new ChangeSizeReport();
result.PreviousSize = cmd.ExecuteScalarInt64(string.Format(@"SELECT SUM(""Size"") FROM ""{0}"" ", m_previousTable), 0);
result.CurrentSize = cmd.ExecuteScalarInt64(string.Format(@"SELECT SUM(""Size"") FROM ""{0}"" ", m_currentTable), 0);
result.AddedSize = cmd.ExecuteScalarInt64(string.Format(@"SELECT SUM(""Size"") FROM ""{0}"" WHERE ""{0}"".""Path"" IN ({1}) ", m_currentTable, added), 0);
result.DeletedSize = cmd.ExecuteScalarInt64(string.Format(@"SELECT SUM(""Size"") FROM ""{0}"" WHERE ""{0}"".""Path"" IN ({1}) ", m_previousTable, deleted), 0);
return result;
}
}
public IChangeCountReport CreateChangeCountReport()
{
var sqls = GetSqls(false);
var added = @"SELECT COUNT(*) FROM (" + sqls.Item1 + ")";
var deleted = @"SELECT COUNT(*) FROM (" + sqls.Item2 + ")";
var modified = @"SELECT COUNT(*) FROM (" + sqls.Item3 + ")";
using(var cmd = m_connection.CreateCommand())
{
cmd.Transaction = m_transaction;
var result = new ChangeCountReport();
result.AddedFolders = cmd.ExecuteScalarInt64(added, 0, (int)Library.Interface.ListChangesElementType.Folder);
result.AddedSymlinks = cmd.ExecuteScalarInt64(added, 0, (int)Library.Interface.ListChangesElementType.Symlink);
result.AddedFiles = cmd.ExecuteScalarInt64(added, 0, (int)Library.Interface.ListChangesElementType.File);
result.DeletedFolders = cmd.ExecuteScalarInt64(deleted, 0, (int)Library.Interface.ListChangesElementType.Folder);
result.DeletedSymlinks = cmd.ExecuteScalarInt64(deleted, 0, (int)Library.Interface.ListChangesElementType.Symlink);
result.DeletedFiles = cmd.ExecuteScalarInt64(deleted, 0, (int)Library.Interface.ListChangesElementType.File);
result.ModifiedFolders = cmd.ExecuteScalarInt64(modified, 0, (int)Library.Interface.ListChangesElementType.Folder);
result.ModifiedSymlinks = cmd.ExecuteScalarInt64(modified, 0, (int)Library.Interface.ListChangesElementType.Symlink);
result.ModifiedFiles = cmd.ExecuteScalarInt64(modified, 0, (int)Library.Interface.ListChangesElementType.File);
return result;
}
}
public IEnumerable<Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>> CreateChangedFileReport()
{
var sqls = GetSqls(false);
var added = sqls.Item1;
var deleted = sqls.Item2;
var modified = sqls.Item3;
using(var cmd = m_connection.CreateCommand())
{
cmd.Transaction = m_transaction;
foreach(var s in ReaderToStringList(cmd.ExecuteReader(added, (int)Library.Interface.ListChangesElementType.Folder)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Added, Library.Interface.ListChangesElementType.Folder, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(added, (int)Library.Interface.ListChangesElementType.Symlink)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Added, Library.Interface.ListChangesElementType.Symlink, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(added, (int)Library.Interface.ListChangesElementType.File)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Added, Library.Interface.ListChangesElementType.File, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(deleted, (int)Library.Interface.ListChangesElementType.Folder)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Deleted, Library.Interface.ListChangesElementType.Folder, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(deleted, (int)Library.Interface.ListChangesElementType.Symlink)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Deleted, Library.Interface.ListChangesElementType.Symlink, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(deleted, (int)Library.Interface.ListChangesElementType.File)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Deleted, Library.Interface.ListChangesElementType.File, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(modified, (int)Library.Interface.ListChangesElementType.Folder)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Modified, Library.Interface.ListChangesElementType.Folder, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(modified, (int)Library.Interface.ListChangesElementType.Symlink)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Modified, Library.Interface.ListChangesElementType.Symlink, s);
foreach(var s in ReaderToStringList(cmd.ExecuteReader(modified, (int)Library.Interface.ListChangesElementType.File)))
yield return new Tuple<Library.Interface.ListChangesChangeType, Library.Interface.ListChangesElementType, string>(Library.Interface.ListChangesChangeType.Modified, Library.Interface.ListChangesElementType.File, s);
}
}
public void Dispose()
{
if (m_insertPreviousElementCommand != null)
{
try { m_insertPreviousElementCommand.Dispose(); }
catch {}
finally { m_insertPreviousElementCommand = null; }
}
if (m_insertCurrentElementCommand != null)
{
try { m_insertCurrentElementCommand.Dispose(); }
catch {}
finally { m_insertCurrentElementCommand = null; }
}
if (m_transaction != null)
{
try { m_transaction.Rollback(); }
catch {}
finally
{
m_previousTable = null;
m_currentTable= null;
m_transaction = null;
}
}
}
}
public IStorageHelper CreateStorageHelper()
{
return new StorageHelper(m_connection);
}
}
}
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