private async Task RunAsync(string[] sources, Library.Utility.IFilter filter)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_Begin);
// New isolated scope for each operation
using (new IsolatedChannelScope())
using (m_database = new LocalBackupDatabase(m_options.Dbpath, m_options))
{
m_result.SetDatabase(m_database);
m_result.Dryrun = m_options.Dryrun;
// Check the database integrity
Utility.UpdateOptionsFromDb(m_database, m_options);
Utility.VerifyParameters(m_database, m_options);
var probe_path = m_database.GetFirstPath();
if (probe_path != null && Duplicati.Library.Utility.Utility.GuessDirSeparator(probe_path) != System.IO.Path.DirectorySeparatorChar.ToString())
{
throw new UserInformationException(string.Format("The backup contains files that belong to another operating system. Proceeding with a backup would cause the database to contain paths from two different operation systems, which is not supported. To proceed without losing remote data, delete all filesets and make sure the --{0} option is set, then run the backup again to re-use the existing data on the remote store.", "no-auto-compact"), "CrossOsDatabaseReuseNotSupported");
}
if (m_database.PartiallyRecreated)
{
throw new UserInformationException("The database was only partially recreated. This database may be incomplete and the repair process is not allowed to alter remote files as that could result in data loss.", "DatabaseIsPartiallyRecreated");
}
if (m_database.RepairInProgress)
{
throw new UserInformationException("The database was attempted repaired, but the repair did not complete. This database may be incomplete and the backup process cannot continue. You may delete the local database and attempt to repair it again.", "DatabaseRepairInProgress");
}
// 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);
Task parallelScanner = null;
Task uploader = null;
try
{
// Setup runners and instances here
using (var db = new Backup.BackupDatabase(m_database, m_options))
using (var backend = new BackendManager(m_backendurl, m_options, m_result.BackendWriter, m_database))
using (var filesetvolume = new FilesetVolumeWriter(m_options, m_database.OperationTimestamp))
using (var stats = new Backup.BackupStatsCollector(m_result))
using (var bk = new Common.BackendHandler(m_options, m_backendurl, db, stats, m_result.TaskReader))
// Keep a reference to these channels to avoid shutdown
using (var uploadtarget = ChannelManager.GetChannel(Backup.Channels.BackendRequest.ForWrite))
{
long filesetid;
var counterToken = new CancellationTokenSource();
using (var snapshot = GetSnapshot(sources, m_options))
{
try
{
// Start parallel scan, or use the database
if (m_options.DisableFileScanner)
{
var d = m_database.GetLastBackupFileCountAndSize();
m_result.OperationProgressUpdater.UpdatefileCount(d.Item1, d.Item2, true);
}
else
{
parallelScanner = Backup.CountFilesHandler.Run(sources, snapshot, m_result, m_options, m_sourceFilter, m_filter, m_result.TaskReader, counterToken.Token);
}
// Make sure the database is sane
await db.VerifyConsistencyAsync(m_options.Blocksize, m_options.BlockhashSize, true);
// Start the uploader process
uploader = Backup.BackendUploader.Run(bk, m_options, db, m_result, m_result.TaskReader, stats);
// If we have an interrupted backup, grab the
string lasttempfilelist = null;
long lasttempfileid = -1;
if (!m_options.DisableSyntheticFilelist)
{
var candidates = (await db.GetIncompleteFilesetsAsync()).OrderBy(x => x.Value).ToArray();
if (candidates.Length > 0)
{
lasttempfileid = candidates.Last().Key;
lasttempfilelist = m_database.GetRemoteVolumeFromID(lasttempfileid).Name;
}
}
// TODO: Rewrite to using the uploader process, or the BackendHandler interface
// Do a remote verification, unless disabled
PreBackupVerify(backend, lasttempfilelist);
// If the previous backup was interrupted, send a synthetic list
await Backup.UploadSyntheticFilelist.Run(db, m_options, m_result, m_result.TaskReader, lasttempfilelist, lasttempfileid);
// Grab the previous backup ID, if any
var prevfileset = m_database.FilesetTimes.FirstOrDefault();
if (prevfileset.Value.ToUniversalTime() > m_database.OperationTimestamp.ToUniversalTime())
{
throw new Exception(string.Format("The previous backup has time {0}, but this backup has time {1}. Something is wrong with the clock.", prevfileset.Value.ToLocalTime(), m_database.OperationTimestamp.ToLocalTime()));
}
var lastfilesetid = prevfileset.Value.Ticks == 0 ? -1 : prevfileset.Key;
// Rebuild any index files that are missing
await Backup.RecreateMissingIndexFiles.Run(db, m_options, m_result, m_result.TaskReader);
// This should be removed as the lookups are no longer used
m_database.BuildLookupTable(m_options);
// Prepare the operation by registering the filelist
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_ProcessingFiles);
var repcnt = 0;
while (repcnt < 100 && await db.GetRemoteVolumeIDAsync(filesetvolume.RemoteFilename) >= 0)
{
filesetvolume.ResetRemoteFilename(m_options, m_database.OperationTimestamp.AddSeconds(repcnt++));
}
if (await db.GetRemoteVolumeIDAsync(filesetvolume.RemoteFilename) >= 0)
{
throw new Exception("Unable to generate a unique fileset name");
}
var filesetvolumeid = await db.RegisterRemoteVolumeAsync(filesetvolume.RemoteFilename, RemoteVolumeType.Files, RemoteVolumeState.Temporary);
filesetid = await db.CreateFilesetAsync(filesetvolumeid, VolumeBase.ParseFilename(filesetvolume.RemoteFilename).Time);
// create USN-based scanner if enabled
var journalService = GetJournalService(sources, snapshot, filter, lastfilesetid);
// Run the backup operation
if (await m_result.TaskReader.ProgressAsync)
{
await RunMainOperation(sources, snapshot, journalService, db, stats, m_options, m_sourceFilter, m_filter, m_result, m_result.TaskReader, lastfilesetid).ConfigureAwait(false);
}
}
finally
{
//If the scanner is still running for some reason, make sure we kill it now
counterToken.Cancel();
}
}
// Ensure the database is in a sane state after adding data
using (new Logging.Timer(LOGTAG, "VerifyConsistency", "VerifyConsistency"))
await db.VerifyConsistencyAsync(m_options.Blocksize, m_options.BlockhashSize, false);
// Send the actual filelist
if (await m_result.TaskReader.ProgressAsync)
{
await Backup.UploadRealFilelist.Run(m_result, db, m_options, filesetvolume, filesetid, m_result.TaskReader);
}
// Wait for upload completion
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_WaitForUpload);
var lastVolumeSize = await FlushBackend(m_result, uploadtarget, uploader).ConfigureAwait(false);
// Make sure we have the database up-to-date
await db.CommitTransactionAsync("CommitAfterUpload", false);
// TODO: Remove this later
m_transaction = m_database.BeginTransaction();
if (await m_result.TaskReader.ProgressAsync)
{
CompactIfRequired(backend, lastVolumeSize);
}
if (m_options.UploadVerificationFile && await m_result.TaskReader.ProgressAsync)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_VerificationUpload);
FilelistProcessor.UploadVerificationFile(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(LOGTAG, "CommitFinalizingBackup", "CommitFinalizingBackup"))
m_transaction.Commit();
m_transaction = null;
if (m_result.TaskControlRendevouz() != TaskControlState.Stop)
{
if (m_options.NoBackendverification)
{
UpdateStorageStatsFromDatabase();
}
else
{
PostBackupVerification();
}
}
}
m_database.WriteResults();
m_database.PurgeLogData(m_options.LogRetention);
if (m_options.AutoVacuum)
{
m_database.Vacuum();
}
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Backup_Complete);
return;
}
}
catch (Exception ex)
{
var aex = BuildException(ex, uploader, parallelScanner);
Logging.Log.WriteErrorMessage(LOGTAG, "FatalError", ex, "Fatal error");
if (aex == ex)
{
throw;
}
throw aex;
}
finally
{
if (parallelScanner != null && !parallelScanner.IsCompleted)
{
parallelScanner.Wait(500);
}
// TODO: We want to commit? always?
if (m_transaction != null)
{
try { m_transaction.Rollback(); }
catch (Exception ex) { Logging.Log.WriteErrorMessage(LOGTAG, "RollbackError", ex, "Rollback error: {0}", ex.Message); }
}
}
}
}