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|
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using Duplicati.Library.Main.Database;
using Duplicati.Library.Main.Volumes;
using Duplicati.Library.Interface;
namespace Duplicati.Library.Main.Operation
{
internal class BackupHandler : IDisposable
{
private readonly Options m_options;
private BackendManager m_backend;
private string m_backendurl;
private readonly byte[] m_blockbuffer;
private readonly byte[] m_blocklistbuffer;
private readonly System.Security.Cryptography.HashAlgorithm m_blockhasher;
private readonly System.Security.Cryptography.HashAlgorithm m_filehasher;
private LocalBackupDatabase m_database;
private System.Data.IDbTransaction m_transaction;
private BlockVolumeWriter m_blockvolume;
private IndexVolumeWriter m_indexvolume;
private FilesetVolumeWriter m_filesetvolume;
private Snapshots.ISnapshotService m_snapshot;
private readonly IMetahash EMPTY_METADATA;
private Library.Utility.IFilter m_filter;
private Library.Utility.IFilter m_sourceFilter;
private BackupResults m_result;
//To better record what happens with the backend, we flush the log messages regularly
// We cannot flush immediately, because that would mess up the transaction, as the uploader
// is on another thread
private readonly TimeSpan FLUSH_TIMESPAN = TimeSpan.FromSeconds(10);
private DateTime m_backendLogFlushTimer;
// Speed up things by caching these
private readonly FileAttributes m_attributeFilter;
private readonly Options.SymlinkStrategy m_symlinkPolicy;
private readonly int m_blocksize;
public BackupHandler(string backendurl, Options options, BackupResults results)
{
EMPTY_METADATA = Utility.WrapMetadata(new Dictionary<string, string>(), options);
m_options = options;
m_result = results;
m_backendurl = backendurl;
m_attributeFilter = m_options.FileAttributeFilter;
m_symlinkPolicy = m_options.SymlinkPolicy;
m_blocksize = m_options.Blocksize;
m_blockbuffer = new byte[m_options.Blocksize * Math.Max(1, m_options.FileReadBufferSize / m_options.Blocksize)];
m_blocklistbuffer = new byte[m_options.Blocksize];
m_blockhasher = System.Security.Cryptography.HashAlgorithm.Create(m_options.BlockHashAlgorithm);
m_filehasher = System.Security.Cryptography.HashAlgorithm.Create(m_options.FileHashAlgorithm);
if (m_blockhasher == null)
throw new Exception(Strings.Foresthash.InvalidHashAlgorithm(m_options.BlockHashAlgorithm));
if (m_filehasher == null)
throw new Exception(Strings.Foresthash.InvalidHashAlgorithm(m_options.FileHashAlgorithm));
if (!m_blockhasher.CanReuseTransform)
throw new Exception(Strings.Foresthash.InvalidCryptoSystem(m_options.BlockHashAlgorithm));
if (!m_filehasher.CanReuseTransform)
throw new Exception(Strings.Foresthash.InvalidCryptoSystem(m_options.FileHashAlgorithm));
if (options.AllowPassphraseChange)
throw new Exception(Strings.Foresthash.PassphraseChangeUnsupported);
}
public class FilterHandler
{
private Snapshots.ISnapshotService m_snapshot;
private FileAttributes m_attributeFilter;
private Duplicati.Library.Utility.IFilter m_enumeratefilter;
private Duplicati.Library.Utility.IFilter m_emitfilter;
private Options.SymlinkStrategy m_symlinkPolicy;
private Options.HardlinkStrategy m_hardlinkPolicy;
private ILogWriter m_logWriter;
private Dictionary<string, string> m_hardlinkmap;
private Duplicati.Library.Utility.IFilter m_sourcefilter;
private Queue<string> m_mixinqueue;
public FilterHandler(Snapshots.ISnapshotService snapshot, FileAttributes attributeFilter, Duplicati.Library.Utility.IFilter sourcefilter, Duplicati.Library.Utility.IFilter filter, Options.SymlinkStrategy symlinkPolicy, Options.HardlinkStrategy hardlinkPolicy, ILogWriter logWriter)
{
m_snapshot = snapshot;
m_attributeFilter = attributeFilter;
m_sourcefilter = sourcefilter;
m_emitfilter = filter;
m_symlinkPolicy = symlinkPolicy;
m_hardlinkPolicy = hardlinkPolicy;
m_logWriter = logWriter;
m_hardlinkmap = new Dictionary<string, string>();
m_mixinqueue = new Queue<string>();
bool includes;
bool excludes;
Library.Utility.FilterExpression.AnalyzeFilters(filter, out includes, out excludes);
if (includes && !excludes)
{
m_enumeratefilter = Library.Utility.FilterExpression.Combine(filter, new Duplicati.Library.Utility.FilterExpression("*" + System.IO.Path.DirectorySeparatorChar, true));
}
else
m_enumeratefilter = m_emitfilter;
}
public bool AttributeFilter(string rootpath, string path, FileAttributes attributes)
{
try
{
if (m_snapshot.IsBlockDevice(path))
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Excluding block device: {0}", path);
return false;
}
}
catch (Exception ex)
{
if (m_logWriter != null)
m_logWriter.AddWarning(string.Format("Failed to process path: {0}", path), ex);
return false;
}
Duplicati.Library.Utility.IFilter sourcematch;
bool sourcematches;
if (m_sourcefilter.Matches(path, out sourcematches, out sourcematch) && sourcematches)
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Including source path: {0}", path);
return true;
}
if (m_hardlinkPolicy != Options.HardlinkStrategy.All)
{
try
{
var id = m_snapshot.HardlinkTargetID(path);
if (id != null)
{
if (m_hardlinkPolicy == Options.HardlinkStrategy.None)
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Excluding hardlink: {0} ({1})", path, id);
return false;
}
else if (m_hardlinkPolicy == Options.HardlinkStrategy.First)
{
string prevPath;
if (m_hardlinkmap.TryGetValue(id, out prevPath))
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Excluding hardlink ({1}) for: {0}, previous hardlink: {2}", path, id, prevPath);
return false;
}
else
{
m_hardlinkmap.Add(id, path);
}
}
}
}
catch (Exception ex)
{
if (m_logWriter != null)
m_logWriter.AddWarning(string.Format("Failed to process path: {0}", path), ex);
return false;
}
}
if ((m_attributeFilter & attributes) != 0)
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Excluding path due to attribute filter: {0}", path);
return false;
}
Library.Utility.IFilter match;
if (!Library.Utility.FilterExpression.Matches(m_enumeratefilter, path, out match))
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Excluding path due to filter: {0} => {1}", path, match == null ? "null" : match.ToString());
return false;
}
else if (match != null)
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Including path due to filter: {0} => {1}", path, match.ToString());
}
var isSymlink = (attributes & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint;
if (isSymlink && m_symlinkPolicy == Options.SymlinkStrategy.Ignore)
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Excluding symlink: {0}", path);
return false;
}
if (isSymlink && m_symlinkPolicy == Options.SymlinkStrategy.Store)
{
if (m_logWriter != null)
m_logWriter.AddVerboseMessage("Storing symlink: {0}", path);
m_mixinqueue.Enqueue(path);
return false;
}
return true;
}
public IEnumerable<string> EnumerateFilesAndFolders()
{
foreach(var s in m_snapshot.EnumerateFilesAndFolders(this.AttributeFilter))
{
while (m_mixinqueue.Count > 0)
yield return m_mixinqueue.Dequeue();
Library.Utility.IFilter m;
if (m_emitfilter != m_enumeratefilter && !Library.Utility.FilterExpression.Matches(m_emitfilter, s, out m))
continue;
yield return s;
}
while (m_mixinqueue.Count > 0)
yield return m_mixinqueue.Dequeue();
}
public IEnumerable<string> Mixin(IEnumerable<string> list)
{
foreach(var s in list.Where(x => {
var fa = FileAttributes.Normal;
try { fa = m_snapshot.GetAttributes(x); }
catch { }
return AttributeFilter(null, x, fa);
}))
{
while (m_mixinqueue.Count > 0)
yield return m_mixinqueue.Dequeue();
yield return s;
}
while (m_mixinqueue.Count > 0)
yield return m_mixinqueue.Dequeue();
}
}
public static Snapshots.ISnapshotService GetSnapshot(string[] sources, Options options, ILogWriter log)
{
try
{
if (options.SnapShotStrategy != Options.OptimizationStrategy.Off)
return Duplicati.Library.Snapshots.SnapshotUtility.CreateSnapshot(sources, options.RawOptions);
}
catch (Exception ex)
{
if (options.SnapShotStrategy == Options.OptimizationStrategy.Required)
throw;
else if (options.SnapShotStrategy == Options.OptimizationStrategy.On)
{
log.AddWarning(Strings.RSyncDir.SnapshotFailedError(ex.ToString()), ex);
}
}
return Library.Utility.Utility.IsClientLinux ?
(Library.Snapshots.ISnapshotService)new Duplicati.Library.Snapshots.NoSnapshotLinux(sources, options.RawOptions)
:
(Library.Snapshots.ISnapshotService)new Duplicati.Library.Snapshots.NoSnapshotWindows(sources, options.RawOptions);
}
private void CountFilesThread()
{
var updater = m_result.OperationProgressUpdater;
var count = 0L;
var size = 0L;
var followSymlinks = m_options.SymlinkPolicy != Duplicati.Library.Main.Options.SymlinkStrategy.Follow;
foreach(var path in new FilterHandler(m_snapshot, m_attributeFilter, m_sourceFilter, m_filter, m_symlinkPolicy, m_options.HardlinkPolicy, null).EnumerateFilesAndFolders())
{
var fa = FileAttributes.Normal;
try { fa = m_snapshot.GetAttributes(path); }
catch { }
if (followSymlinks && ((fa & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint))
continue;
else if ((fa & FileAttributes.Directory) == FileAttributes.Directory)
continue;
count++;
try { size += m_snapshot.GetFileSize(path); }
catch { }
m_result.OperationProgressUpdater.UpdatefileCount(count, size, false);
}
m_result.OperationProgressUpdater.UpdatefileCount(count, size, true);
}
private void UploadSyntheticFilelist()
{
var incompleteFilesets = m_database.GetIncompleteFilesets(null).OrderBy(x => x.Value).ToArray();
if (incompleteFilesets.Length != 0)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_PreviousBackupFinalize);
m_result.AddMessage(string.Format("Uploading filelist from previous interrupted backup"));
using(var trn = m_database.BeginTransaction())
{
var incompleteSet = incompleteFilesets.Last();
var badIds = from n in incompleteFilesets select n.Key;
var prevs = (from n in m_database.FilesetTimes
where
n.Key < incompleteSet.Key
&&
!badIds.Contains(n.Key)
orderby n.Key
select n.Key).ToArray();
var prevId = prevs.Length == 0 ? -1 : prevs.Last();
FilesetVolumeWriter fsw = null;
try
{
var s = 1;
var fileTime = incompleteSet.Value + TimeSpan.FromSeconds(s);
var oldFilesetID = incompleteSet.Key;
// Probe for an unused filename
while (s < 60)
{
var id = m_database.GetRemoteVolumeID(VolumeBase.GenerateFilename(RemoteVolumeType.Files, m_options, null, fileTime));
if (id < 0)
break;
fileTime = incompleteSet.Value + TimeSpan.FromSeconds(++s);
}
fsw = new FilesetVolumeWriter(m_options, fileTime);
fsw.VolumeID = m_database.RegisterRemoteVolume(fsw.RemoteFilename, RemoteVolumeType.Files, RemoteVolumeState.Temporary, m_transaction);
if (!string.IsNullOrEmpty(m_options.ControlFiles))
foreach(var p in m_options.ControlFiles.Split(new char[] { System.IO.Path.PathSeparator }, StringSplitOptions.RemoveEmptyEntries))
m_filesetvolume.AddControlFile(p, m_options.GetCompressionHintFromFilename(p));
var newFilesetID = m_database.CreateFileset(fsw.VolumeID, fileTime, trn);
m_database.LinkFilesetToVolume(newFilesetID, fsw.VolumeID, trn);
m_database.AppendFilesFromPreviousSet(trn, null, newFilesetID, prevId, fileTime);
m_database.WriteFileset(fsw, trn, newFilesetID);
if (m_options.Dryrun)
{
m_result.AddDryrunMessage(string.Format("Would upload fileset: {0}, size: {1}", fsw.RemoteFilename, Library.Utility.Utility.FormatSizeString(new FileInfo(fsw.LocalFilename).Length)));
}
else
{
m_database.UpdateRemoteVolume(fsw.RemoteFilename, RemoteVolumeState.Uploading, -1, null, trn);
using(new Logging.Timer("CommitUpdateFilelistVolume"))
trn.Commit();
m_backend.Put(fsw);
fsw = null;
}
}
finally
{
if (fsw != null)
try { fsw.Dispose(); }
catch { fsw = null; }
}
}
}
if (m_options.IndexfilePolicy != Options.IndexFileStrategy.None)
{
var blockhasher = System.Security.Cryptography.HashAlgorithm.Create(m_options.BlockHashAlgorithm);
var hashsize = blockhasher.HashSize / 8;
foreach(var blockfile in m_database.GetMissingIndexFiles())
{
var w = new IndexVolumeWriter(m_options);
w.VolumeID = m_database.RegisterRemoteVolume(w.RemoteFilename, RemoteVolumeType.Index, RemoteVolumeState.Temporary, null);
var blockvolume = m_database.GetRemoteVolumeFromName(blockfile);
w.StartVolume(blockvolume.Name);
var volumeid = m_database.GetRemoteVolumeID(blockvolume.Name);
foreach(var b in m_database.GetBlocks(volumeid))
w.AddBlock(b.Hash, b.Size);
w.FinishVolume(blockvolume.Hash, blockvolume.Size);
if (m_options.IndexfilePolicy == Options.IndexFileStrategy.Full)
foreach(var b in m_database.GetBlocklists(volumeid, m_options.Blocksize, hashsize))
w.WriteBlocklist(b.Item1, b.Item2, 0, b.Item3);
w.Close();
m_database.AddIndexBlockLink(w.VolumeID, volumeid, null);
if (m_options.Dryrun)
m_result.AddDryrunMessage(string.Format("would upload new index file {0}, with size {1}, previous size {2}", w.RemoteFilename, Library.Utility.Utility.FormatSizeString(new System.IO.FileInfo(w.LocalFilename).Length), Library.Utility.Utility.FormatSizeString(w.Filesize)));
else
{
m_database.UpdateRemoteVolume(w.RemoteFilename, RemoteVolumeState.Uploading, -1, null, null);
m_backend.Put(w);
}
}
}
}
public void Run(string[] sources, Library.Utility.IFilter filter)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_Begin);
using(m_database = new LocalBackupDatabase(m_options.Dbpath, m_options))
{
m_result.SetDatabase(m_database);
m_result.Dryrun = m_options.Dryrun;
Utility.VerifyParameters(m_database, m_options);
m_database.VerifyConsistency(null, m_options.Blocksize, m_options.BlockhashSize);
// If there is no filter, we set an empty filter to simplify the code
// If there is a filter, we make sure that the sources are included
m_filter = filter ?? new Library.Utility.FilterExpression();
m_sourceFilter = new Library.Utility.FilterExpression(sources, true);
var lastVolumeSize = -1L;
m_backendLogFlushTimer = DateTime.Now.Add(FLUSH_TIMESPAN);
System.Threading.Thread parallelScanner = null;
try
{
m_snapshot = GetSnapshot(sources, m_options, m_result);
// Start parallel scan
if (m_options.ChangedFilelist == null || m_options.ChangedFilelist.Length < 1)
{
parallelScanner = new System.Threading.Thread(CountFilesThread) {
Name = "Read ahead file counter",
IsBackground = true
};
parallelScanner.Start();
}
using(m_backend = new BackendManager(m_backendurl, m_options, m_result.BackendWriter, m_database))
using(m_filesetvolume = new FilesetVolumeWriter(m_options, m_database.OperationTimestamp))
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_PreBackupVerify);
using(new Logging.Timer("PreBackupVerify"))
{
try
{
if (m_options.NoBackendverification)
FilelistProcessor.VerifyLocalList(m_backend, m_options, m_database, m_result.BackendWriter);
else
FilelistProcessor.VerifyRemoteList(m_backend, m_options, m_database, m_result.BackendWriter);
}
catch (Exception ex)
{
if (m_options.AutoCleanup)
{
m_result.AddWarning("Backend verification failed, attempting automatic cleanup", ex);
m_result.RepairResults = new RepairResults(m_result);
new RepairHandler(m_backend.BackendUrl, m_options, (RepairResults)m_result.RepairResults).Run();
m_result.AddMessage("Backend cleanup finished, retrying verification");
FilelistProcessor.VerifyRemoteList(m_backend, m_options, m_database, m_result.BackendWriter);
}
else
throw;
}
}
// Verify before uploading a synthetic list
m_database.VerifyConsistency(null, m_options.Blocksize, m_options.BlockhashSize);
UploadSyntheticFilelist();
m_database.BuildLookupTable(m_options);
m_transaction = m_database.BeginTransaction();
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_ProcessingFiles);
var filesetvolumeid = m_database.RegisterRemoteVolume(m_filesetvolume.RemoteFilename, RemoteVolumeType.Files, RemoteVolumeState.Temporary, m_transaction);
m_database.CreateFileset(filesetvolumeid, VolumeBase.ParseFilename(m_filesetvolume.RemoteFilename).Time, m_transaction);
m_blockvolume = new BlockVolumeWriter(m_options);
m_blockvolume.VolumeID = m_database.RegisterRemoteVolume(m_blockvolume.RemoteFilename, RemoteVolumeType.Blocks, RemoteVolumeState.Temporary, m_transaction);
if (m_options.IndexfilePolicy != Options.IndexFileStrategy.None)
{
m_indexvolume = new IndexVolumeWriter(m_options);
m_indexvolume.VolumeID = m_database.RegisterRemoteVolume(m_indexvolume.RemoteFilename, RemoteVolumeType.Index, RemoteVolumeState.Temporary, m_transaction);
}
var filterhandler = new FilterHandler(m_snapshot, m_attributeFilter, m_sourceFilter, m_filter, m_symlinkPolicy, m_options.HardlinkPolicy, m_result);
using(new Logging.Timer("BackupMainOperation"))
{
if (m_options.ChangedFilelist != null && m_options.ChangedFilelist.Length >= 1)
{
m_result.AddVerboseMessage("Processing supplied change list instead of enumerating filesystem");
m_result.OperationProgressUpdater.UpdatefileCount(m_options.ChangedFilelist.Length, 0, true);
foreach(var p in filterhandler.Mixin(m_options.ChangedFilelist))
{
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
{
m_result.AddMessage("Stopping backup operation on request");
break;
}
try
{
this.HandleFilesystemEntry(p, m_snapshot.GetAttributes(p));
}
catch (Exception ex)
{
m_result.AddWarning(string.Format("Failed to process element: {0}, message: {1}", p, ex.Message), ex);
}
}
m_database.AppendFilesFromPreviousSet(m_transaction, m_options.DeletedFilelist);
}
else
{
foreach(var path in filterhandler.EnumerateFilesAndFolders())
{
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
{
m_result.AddMessage("Stopping backup operation on request");
break;
}
var fa = FileAttributes.Normal;
try { fa = m_snapshot.GetAttributes(path); }
catch { }
this.HandleFilesystemEntry(path, fa);
}
}
//If the scanner is still running for some reason, make sure we kill it now
if (parallelScanner != null && parallelScanner.IsAlive)
parallelScanner.Abort();
// We no longer need to snapshot active
try { m_snapshot.Dispose(); }
finally { m_snapshot = null; }
m_result.OperationProgressUpdater.UpdatefileCount(m_result.ExaminedFiles, m_result.SizeOfExaminedFiles, true);
}
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_Finalize);
using(new Logging.Timer("FinalizeRemoteVolumes"))
{
if (m_blockvolume.SourceSize > 0)
{
lastVolumeSize = m_blockvolume.SourceSize;
if (m_options.Dryrun)
{
m_result.AddDryrunMessage(string.Format("Would upload block volume: {0}, size: {1}", m_blockvolume.RemoteFilename, Library.Utility.Utility.FormatSizeString(new FileInfo(m_blockvolume.LocalFilename).Length)));
if (m_indexvolume != null)
{
m_blockvolume.Close();
UpdateIndexVolume();
m_indexvolume.FinishVolume(Library.Utility.Utility.CalculateHash(m_blockvolume.LocalFilename), new FileInfo(m_blockvolume.LocalFilename).Length);
m_result.AddDryrunMessage(string.Format("Would upload index volume: {0}, size: {1}", m_indexvolume.RemoteFilename, Library.Utility.Utility.FormatSizeString(new FileInfo(m_indexvolume.LocalFilename).Length)));
}
m_blockvolume.Dispose();
m_blockvolume = null;
m_indexvolume.Dispose();
m_indexvolume = null;
}
else
{
m_database.UpdateRemoteVolume(m_blockvolume.RemoteFilename, RemoteVolumeState.Uploading, -1, null, m_transaction);
m_blockvolume.Close();
UpdateIndexVolume();
using(new Logging.Timer("CommitUpdateRemoteVolume"))
m_transaction.Commit();
m_transaction = m_database.BeginTransaction();
m_backend.Put(m_blockvolume, m_indexvolume);
using(new Logging.Timer("CommitUpdateRemoteVolume"))
m_transaction.Commit();
m_transaction = m_database.BeginTransaction();
m_blockvolume = null;
m_indexvolume = null;
}
}
else
{
m_database.RemoveRemoteVolume(m_blockvolume.RemoteFilename, m_transaction);
if (m_indexvolume != null)
m_database.RemoveRemoteVolume(m_indexvolume.RemoteFilename, m_transaction);
}
}
using(new Logging.Timer("UpdateChangeStatistics"))
m_database.UpdateChangeStatistics(m_result);
using(new Logging.Timer("VerifyConsistency"))
m_database.VerifyConsistency(m_transaction, m_options.Blocksize, m_options.BlockhashSize);
var changeCount =
m_result.AddedFiles + m_result.ModifiedFiles + m_result.DeletedFiles +
m_result.AddedFolders + m_result.ModifiedFolders + m_result.DeletedFolders +
m_result.AddedSymlinks + m_result.ModifiedSymlinks + m_result.DeletedSymlinks;
//Changes in the filelist triggers a filelist upload
if (m_options.UploadUnchangedBackups || changeCount > 0)
{
using(new Logging.Timer("Uploading a new fileset"))
{
if (!string.IsNullOrEmpty(m_options.ControlFiles))
foreach(var p in m_options.ControlFiles.Split(new char[] { System.IO.Path.PathSeparator }, StringSplitOptions.RemoveEmptyEntries))
m_filesetvolume.AddControlFile(p, m_options.GetCompressionHintFromFilename(p));
m_database.WriteFileset(m_filesetvolume, m_transaction);
m_filesetvolume.Close();
if (m_options.Dryrun)
m_result.AddDryrunMessage(string.Format("Would upload fileset volume: {0}, size: {1}", m_filesetvolume.RemoteFilename, Library.Utility.Utility.FormatSizeString(new FileInfo(m_filesetvolume.LocalFilename).Length)));
else
{
m_database.UpdateRemoteVolume(m_filesetvolume.RemoteFilename, RemoteVolumeState.Uploading, -1, null, m_transaction);
using(new Logging.Timer("CommitUpdateRemoteVolume"))
m_transaction.Commit();
m_transaction = m_database.BeginTransaction();
m_backend.Put(m_filesetvolume);
using(new Logging.Timer("CommitUpdateRemoteVolume"))
m_transaction.Commit();
m_transaction = m_database.BeginTransaction();
}
}
}
else
{
m_result.AddVerboseMessage("removing temp files, as no data needs to be uploaded");
m_database.RemoveRemoteVolume(m_filesetvolume.RemoteFilename, m_transaction);
}
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_WaitForUpload);
using(new Logging.Timer("Async backend wait"))
m_backend.WaitForComplete(m_database, m_transaction);
if (m_result.TaskControlRendevouz() != TaskControlState.Stop)
{
if (m_options.KeepTime.Ticks > 0 || m_options.KeepVersions != 0)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_Delete);
m_result.DeleteResults = new DeleteResults(m_result);
using(var db = new LocalDeleteDatabase(m_database))
new DeleteHandler(m_backend.BackendUrl, m_options, (DeleteResults)m_result.DeleteResults).DoRun(db, m_transaction, true, lastVolumeSize <= m_options.SmallFileSize);
}
else if (lastVolumeSize <= m_options.SmallFileSize && !m_options.NoAutoCompact)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_Compact);
m_result.CompactResults = new CompactResults(m_result);
using(var db = new LocalDeleteDatabase(m_database))
new CompactHandler(m_backend.BackendUrl, m_options, (CompactResults)m_result.CompactResults).DoCompact(db, true, m_transaction);
}
}
if (m_options.UploadVerificationFile)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_VerificationUpload);
FilelistProcessor.UploadVerificationFile(m_backend.BackendUrl, m_options, m_result.BackendWriter, m_database, m_transaction);
}
if (m_options.Dryrun)
{
m_transaction.Rollback();
m_transaction = null;
}
else
{
using(new Logging.Timer("CommitFinalizingBackup"))
m_transaction.Commit();
m_transaction = null;
m_database.Vacuum();
if (m_result.TaskControlRendevouz() != TaskControlState.Stop && !m_options.NoBackendverification)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_PostBackupVerify);
using(var backend = new BackendManager(m_backendurl, m_options, m_result.BackendWriter, m_database))
{
using(new Logging.Timer("AfterBackupVerify"))
FilelistProcessor.VerifyRemoteList(backend, m_options, m_database, m_result.BackendWriter);
backend.WaitForComplete(m_database, null);
}
if (m_options.BackupTestSampleCount > 0 && m_database.GetRemoteVolumes().Count() > 0)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_PostBackupTest);
m_result.TestResults = new TestResults(m_result);
using(var testdb = new LocalTestDatabase(m_database))
using(var backend = new BackendManager(m_backendurl, m_options, m_result.BackendWriter, testdb))
new TestHandler(m_backendurl, m_options, new TestResults(m_result))
.DoRun(m_options.BackupTestSampleCount, testdb, backend);
}
}
}
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_Complete);
m_database.WriteResults();
m_database.PurgeLogData(m_options.LogRetention);
return;
}
}
catch (Exception ex)
{
m_result.AddError("Fatal error", ex);
throw;
}
finally
{
if (parallelScanner != null && parallelScanner.IsAlive)
{
parallelScanner.Abort();
parallelScanner.Join(500);
if (parallelScanner.IsAlive)
m_result.AddWarning("Failed to terminate filecounter thread", null);
}
if (m_snapshot != null)
try { m_snapshot.Dispose(); }
catch (Exception ex) { m_result.AddError(string.Format("Failed to dispose snapshot"), ex); }
finally { m_snapshot = null; }
if (m_transaction != null)
try { m_transaction.Rollback(); }
catch (Exception ex) { m_result.AddError(string.Format("Rollback error: {0}", ex.Message), ex); }
}
}
}
private Dictionary<string, string> GenerateMetadata(string path, System.IO.FileAttributes attributes)
{
Dictionary<string, string> metadata;
if (m_options.StoreMetadata)
{
metadata = m_snapshot.GetMetadata(path);
if (metadata == null)
metadata = new Dictionary<string, string>();
if (!metadata.ContainsKey("CoreAttributes"))
metadata["CoreAttributes"] = attributes.ToString();
if (!metadata.ContainsKey("CoreLastWritetime"))
{
try
{
metadata["CoreLastWritetime"] = m_snapshot.GetLastWriteTimeUtc(path).Ticks.ToString();
}
catch (Exception ex)
{
m_result.AddWarning(string.Format("Failed to read timestamp on \"{0}\"", path), ex);
}
}
if (!metadata.ContainsKey("CoreCreatetime"))
{
try
{
metadata["CoreCreatetime"] = m_snapshot.GetCreationTimeUtc(path).Ticks.ToString();
}
catch (Exception ex)
{
m_result.AddWarning(string.Format("Failed to read timestamp on \"{0}\"", path), ex);
}
}
}
else
{
metadata = new Dictionary<string, string>();
}
return metadata;
}
private bool HandleFilesystemEntry(string path, System.IO.FileAttributes attributes)
{
// If we lost the connection, there is no point in keeping on processing
if (m_backend.HasDied)
throw m_backend.LastException;
try
{
m_result.OperationProgressUpdater.StartFile(path, -1);
if (m_backendLogFlushTimer < DateTime.Now)
{
m_backendLogFlushTimer = DateTime.Now.Add(FLUSH_TIMESPAN);
m_backend.FlushDbMessages(m_database, null);
}
DateTime lastwrite = new DateTime(0, DateTimeKind.Utc);
try
{
lastwrite = m_snapshot.GetLastWriteTimeUtc(path);
}
catch (Exception ex)
{
m_result.AddWarning(string.Format("Failed to read timestamp on \"{0}\"", path), ex);
}
if ((attributes & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint)
{
if (m_options.SymlinkPolicy == Options.SymlinkStrategy.Ignore)
{
m_result.AddVerboseMessage("Ignoring symlink {0}", path);
return false;
}
if (m_options.SymlinkPolicy == Options.SymlinkStrategy.Store)
{
Dictionary<string, string> metadata = GenerateMetadata(path, attributes);
if (!metadata.ContainsKey("CoreSymlinkTarget"))
metadata["CoreSymlinkTarget"] = m_snapshot.GetSymlinkTarget(path);
var metahash = Utility.WrapMetadata(metadata, m_options);
AddSymlinkToOutput(path, DateTime.UtcNow, metahash);
m_result.AddVerboseMessage("Stored symlink {0}", path);
//Do not recurse symlinks
return false;
}
}
if ((attributes & FileAttributes.Directory) == FileAttributes.Directory)
{
IMetahash metahash;
if (m_options.StoreMetadata)
{
metahash = Utility.WrapMetadata(GenerateMetadata(path, attributes), m_options);
}
else
{
metahash = EMPTY_METADATA;
}
m_result.AddVerboseMessage("Adding directory {0}", path);
AddFolderToOutput(path, lastwrite, metahash);
return true;
}
m_result.OperationProgressUpdater.UpdatefilesProcessed(++m_result.ExaminedFiles, m_result.SizeOfExaminedFiles);
bool changed = false;
// Last scan time
DateTime oldModified;
long lastFileSize = -1;
string oldMetahash;
long oldMetasize;
var oldId = m_database.GetFileEntry(path, out oldModified, out lastFileSize, out oldMetahash, out oldMetasize);
long filestatsize = -1;
try { filestatsize = m_snapshot.GetFileSize(path); }
catch { }
IMetahash metahashandsize = m_options.StoreMetadata ? Utility.WrapMetadata(GenerateMetadata(path, attributes), m_options) : EMPTY_METADATA;
var timestampChanged = lastwrite != oldModified || lastwrite.Ticks == 0 || oldModified.Ticks == 0;
var filesizeChanged = filestatsize < 0 || lastFileSize < 0 || filestatsize != lastFileSize;
var tooLargeFile = m_options.SkipFilesLargerThan != long.MaxValue && m_options.SkipFilesLargerThan != 0 && filestatsize >= 0 && filestatsize > m_options.SkipFilesLargerThan;
var metadatachanged = !m_options.SkipMetadata && (metahashandsize.Size != oldMetasize || metahashandsize.Hash != oldMetahash);
if ((oldId < 0 || m_options.DisableFiletimeCheck || timestampChanged || filesizeChanged || metadatachanged) && !tooLargeFile)
{
m_result.AddVerboseMessage("Checking file for changes {0}, new: {1}, timestamp changed: {2}, size changed: {3}, metadatachanged: {4}, {5} vs {6}", path, oldId <= 0, timestampChanged, filesizeChanged, metadatachanged, lastwrite, oldModified);
m_result.OpenedFiles++;
long filesize = 0;
var hint = m_options.GetCompressionHintFromFilename(path);
var oldHash = oldId < 0 ? null : m_database.GetFileHash(oldId);
using (var blocklisthashes = new Library.Utility.FileBackedStringList())
using (var hashcollector = new Library.Utility.FileBackedStringList())
{
using (var fs = new Blockprocessor(m_snapshot.OpenRead(path), m_blockbuffer))
{
try { m_result.OperationProgressUpdater.StartFile(path, fs.Length); }
catch (Exception ex) { m_result.AddWarning(string.Format("Failed to read file length for file {0}", path), ex); }
int blocklistoffset = 0;
m_filehasher.Initialize();
var offset = 0;
var remaining = fs.Readblock();
do
{
var size = Math.Min(m_blocksize, remaining);
m_filehasher.TransformBlock(m_blockbuffer, offset, size, m_blockbuffer, offset);
var blockkey = m_blockhasher.ComputeHash(m_blockbuffer, offset, size);
if (m_blocklistbuffer.Length - blocklistoffset < blockkey.Length)
{
var blkey = Convert.ToBase64String(m_blockhasher.ComputeHash(m_blocklistbuffer, 0, blocklistoffset));
blocklisthashes.Add(blkey);
AddBlockToOutput(blkey, m_blocklistbuffer, 0, blocklistoffset, CompressionHint.Noncompressible, true);
blocklistoffset = 0;
}
Array.Copy(blockkey, 0, m_blocklistbuffer, blocklistoffset, blockkey.Length);
blocklistoffset += blockkey.Length;
var key = Convert.ToBase64String(blockkey);
AddBlockToOutput(key, m_blockbuffer, offset, size, hint, false);
hashcollector.Add(key);
filesize += size;
m_result.OperationProgressUpdater.UpdateFileProgress(filesize);
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
return false;
remaining -= size;
offset += size;
if (remaining == 0)
{
offset = 0;
remaining = fs.Readblock();
}
} while (remaining > 0);
//If all fits in a single block, don't bother with blocklists
if (hashcollector.Count > 1)
{
var blkeyfinal = Convert.ToBase64String(m_blockhasher.ComputeHash(m_blocklistbuffer, 0, blocklistoffset));
blocklisthashes.Add(blkeyfinal);
AddBlockToOutput(blkeyfinal, m_blocklistbuffer, 0, blocklistoffset, CompressionHint.Noncompressible, true);
}
}
m_result.SizeOfOpenedFiles += filesize;
m_filehasher.TransformFinalBlock(m_blockbuffer, 0, 0);
var filekey = Convert.ToBase64String(m_filehasher.Hash);
if (oldHash != filekey)
{
if (oldHash == null)
m_result.AddVerboseMessage("New file {0}", path);
else
m_result.AddVerboseMessage("File has changed {0}", path);
if (oldId < 0)
{
m_result.AddedFiles++;
m_result.SizeOfAddedFiles += filesize;
if (m_options.Dryrun)
m_result.AddDryrunMessage(string.Format("Would add new file {0}, size {1}", path, Library.Utility.Utility.FormatSizeString(filesize)));
}
else
{
m_result.ModifiedFiles++;
m_result.SizeOfModifiedFiles += filesize;
if (m_options.Dryrun)
m_result.AddDryrunMessage(string.Format("Would add changed file {0}, size {1}", path, Library.Utility.Utility.FormatSizeString(filesize)));
}
AddFileToOutput(path, filesize, lastwrite, metahashandsize, hashcollector, filekey, blocklisthashes);
changed = true;
}
else if (metadatachanged)
{
m_result.AddVerboseMessage("File has only metadata changes {0}", path);
AddFileToOutput(path, filesize, lastwrite, metahashandsize, hashcollector, filekey, blocklisthashes);
changed = true;
}
else
{
// When we write the file to output, update the last modified time
oldModified = lastwrite;
m_result.AddVerboseMessage("File has not changed {0}", path);
}
}
}
else
{
if (m_options.SkipFilesLargerThan == long.MaxValue || m_options.SkipFilesLargerThan == 0 || m_snapshot.GetFileSize(path) < m_options.SkipFilesLargerThan)
m_result.AddVerboseMessage("Skipped checking file, because timestamp was not updated {0}", path);
else
m_result.AddVerboseMessage("Skipped checking file, because the size exceeds limit {0}", path);
}
if (!changed)
AddUnmodifiedFile(oldId, lastwrite);
m_result.SizeOfExaminedFiles += filestatsize;
if (filestatsize != 0)
m_result.OperationProgressUpdater.UpdatefilesProcessed(m_result.ExaminedFiles, m_result.SizeOfExaminedFiles);
}
catch (Exception ex)
{
m_result.AddWarning(string.Format("Failed to process path: {0}", path), ex);
m_result.FilesWithError++;
}
return true;
}
/// <summary>
/// Adds the found file data to the output unless the block already exists
/// </summary>
/// <param name="key">The block hash</param>
/// <param name="data">The data matching the hash</param>
/// <param name="len">The size of the data</param>
/// <param name="offset">The offset into the data</param>
/// <param name="hint">Hint for compression module</param>
/// <param name="isBlocklistData">Indicates if the block is list data</param>
private bool AddBlockToOutput(string key, byte[] data, int offset, int len, CompressionHint hint, bool isBlocklistData)
{
if (m_database.AddBlock(key, len, m_blockvolume.VolumeID, m_transaction))
{
m_blockvolume.AddBlock(key, data, offset, len, hint);
//TODO: In theory a normal data block and blocklist block could be equal.
// this would cause the index file to not contain all data,
// if the data file is added before the blocklist data
// ... highly theoretical ...
if (m_options.IndexfilePolicy == Options.IndexFileStrategy.Full && isBlocklistData)
m_indexvolume.WriteBlocklist(key, data, offset, len);
if (m_blockvolume.Filesize > m_options.VolumeSize - m_options.Blocksize)
{
if (m_options.Dryrun)
{
m_blockvolume.Close();
m_result.AddDryrunMessage(string.Format("Would upload block volume: {0}, size: {1}", m_blockvolume.RemoteFilename, Library.Utility.Utility.FormatSizeString(new FileInfo(m_blockvolume.LocalFilename).Length)));
if (m_indexvolume != null)
{
UpdateIndexVolume();
m_indexvolume.FinishVolume(Library.Utility.Utility.CalculateHash(m_blockvolume.LocalFilename), new FileInfo(m_blockvolume.LocalFilename).Length);
m_result.AddDryrunMessage(string.Format("Would upload index volume: {0}, size: {1}", m_indexvolume.RemoteFilename, Library.Utility.Utility.FormatSizeString(new FileInfo(m_indexvolume.LocalFilename).Length)));
m_indexvolume.Dispose();
m_indexvolume = null;
}
m_blockvolume.Dispose();
m_blockvolume = null;
m_indexvolume.Dispose();
m_indexvolume = null;
}
else
{
//When uploading a new volume, we register the volumes and then flush the transaction
// this ensures that the local database and remote storage are as closely related as possible
m_database.UpdateRemoteVolume(m_blockvolume.RemoteFilename, RemoteVolumeState.Uploading, -1, null, m_transaction);
m_blockvolume.Close();
UpdateIndexVolume();
m_backend.FlushDbMessages(m_database, m_transaction);
m_backendLogFlushTimer = DateTime.Now.Add(FLUSH_TIMESPAN);
using(new Logging.Timer("CommitAddBlockToOutputFlush"))
m_transaction.Commit();
m_transaction = m_database.BeginTransaction();
m_backend.Put(m_blockvolume, m_indexvolume);
m_blockvolume = null;
m_indexvolume = null;
using(new Logging.Timer("CommitAddBlockToOutputFlush"))
m_transaction.Commit();
m_transaction = m_database.BeginTransaction();
}
m_blockvolume = new BlockVolumeWriter(m_options);
m_blockvolume.VolumeID = m_database.RegisterRemoteVolume(m_blockvolume.RemoteFilename, RemoteVolumeType.Blocks, RemoteVolumeState.Temporary, m_transaction);
if (m_options.IndexfilePolicy != Options.IndexFileStrategy.None)
{
m_indexvolume = new IndexVolumeWriter(m_options);
m_indexvolume.VolumeID = m_database.RegisterRemoteVolume(m_indexvolume.RemoteFilename, RemoteVolumeType.Index, RemoteVolumeState.Temporary, m_transaction);
}
}
return true;
}
return false;
}
private void AddUnmodifiedFile(long oldId, DateTime lastModified)
{
m_database.AddUnmodifiedFile(oldId, lastModified, m_transaction);
}
/// <summary>
/// Adds a file to the output,
/// </summary>
/// <param name="filename">The name of the file to record</param>
/// <param name="lastModified">The value of the lastModified timestamp</param>
/// <param name="hashlist">The list of hashes that make up the file</param>
/// <param name="size">The size of the file</param>
/// <param name="fragmentoffset">The offset into a fragment block where the last few bytes are stored</param>
/// <param name="metadata">A lookup table with various metadata values describing the file</param>
private bool AddFolderToOutput(string filename, DateTime lastModified, IMetahash meta)
{
long metadataid;
bool r = false;
if (meta.Size > m_blocksize)
throw new InvalidDataException(string.Format("Too large metadata, cannot handle more than {0} bytes", m_blocksize));
r |= AddBlockToOutput(meta.Hash, meta.Blob, 0, (int)meta.Size, CompressionHint.Default, false);
r |= m_database.AddMetadataset(meta.Hash, meta.Size, out metadataid, m_transaction);
m_database.AddDirectoryEntry(filename, metadataid, lastModified, m_transaction);
return r;
}
/// <summary>
/// Adds a file to the output,
/// </summary>
/// <param name="filename">The name of the file to record</param>
/// <param name="lastModified">The value of the lastModified timestamp</param>
/// <param name="hashlist">The list of hashes that make up the file</param>
/// <param name="size">The size of the file</param>
/// <param name="fragmentoffset">The offset into a fragment block where the last few bytes are stored</param>
/// <param name="metadata">A lookup table with various metadata values describing the file</param>
private bool AddSymlinkToOutput(string filename, DateTime lastModified, IMetahash meta)
{
long metadataid;
bool r = false;
if (meta.Size > m_blocksize)
throw new InvalidDataException(string.Format("Too large metadata, cannot handle more than {0} bytes", m_blocksize));
r |= AddBlockToOutput(meta.Hash, meta.Blob, 0, (int)meta.Size, CompressionHint.Default, false);
r |= m_database.AddMetadataset(meta.Hash, meta.Size, out metadataid, m_transaction);
m_database.AddSymlinkEntry(filename, metadataid, lastModified, m_transaction);
return r;
}
/// <summary>
/// Adds a file to the output,
/// </summary>
/// <param name="filename">The name of the file to record</param>
/// <param name="lastModified">The value of the lastModified timestamp</param>
/// <param name="hashlist">The list of hashes that make up the file</param>
/// <param name="size">The size of the file</param>
/// <param name="fragmentoffset">The offset into a fragment block where the last few bytes are stored</param>
/// <param name="metadata">A lookup table with various metadata values describing the file</param>
private void AddFileToOutput(string filename, long size, DateTime lastmodified, IMetahash metadata, IEnumerable<string> hashlist, string filehash, IEnumerable<string> blocklisthashes)
{
long metadataid;
long blocksetid;
if (metadata.Size > m_blocksize)
throw new InvalidDataException(string.Format("Too large metadata, cannot handle more than {0} bytes", m_blocksize));
AddBlockToOutput(metadata.Hash, metadata.Blob, 0, (int)metadata.Size, CompressionHint.Default, false);
m_database.AddMetadataset(metadata.Hash, metadata.Size, out metadataid, m_transaction);
m_database.AddBlockset(filehash, size, m_blocksize, hashlist, blocklisthashes, out blocksetid, m_transaction);
m_database.AddFile(filename, lastmodified, blocksetid, metadataid, m_transaction);
}
private void UpdateIndexVolume()
{
if (m_indexvolume != null)
{
m_database.AddIndexBlockLink(m_indexvolume.VolumeID, m_blockvolume.VolumeID, m_transaction);
m_indexvolume.StartVolume(m_blockvolume.RemoteFilename);
foreach(var b in m_database.GetBlocks(m_blockvolume.VolumeID))
m_indexvolume.AddBlock(b.Hash, b.Size);
m_database.UpdateRemoteVolume(m_indexvolume.RemoteFilename, RemoteVolumeState.Uploading, -1, null, m_transaction);
}
}
public void Dispose()
{
if (m_blockvolume != null)
{
try { m_blockvolume.Dispose(); }
catch (Exception ex) { m_result.AddError("Failed disposing block volume", ex); }
finally { m_blockvolume = null; }
}
if (m_indexvolume != null)
{
try { m_indexvolume.Dispose(); }
catch (Exception ex) { m_result.AddError("Failed disposing index volume", ex); }
finally { m_indexvolume = null; }
}
m_result.EndTime = DateTime.UtcNow;
}
}
}
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