コード例 #1
0
        public static Task Run(Snapshots.ISnapshotService snapshot, Options options, BackupStatsCollector stats, BackupDatabase database)
        {
            return(AutomationExtensions.RunTask(
                       new
            {
                Input = Channels.ProcessedFiles.ForRead,
                Output = Channels.AcceptedChangedFile.ForWrite
            },

                       async self =>
            {
                var EMPTY_METADATA = Utility.WrapMetadata(new Dictionary <string, string>(), options);
                var blocksize = options.Blocksize;

                while (true)
                {
                    var e = await self.Input.ReadAsync();

                    long filestatsize = -1;
                    try
                    {
                        filestatsize = snapshot.GetFileSize(e.Path);
                    }
                    catch (Exception ex)
                    {
                        Logging.Log.WriteExplicitMessage(FILELOGTAG, "FailedToReadSize", ex, "Failed tp read size of file: {0}", e.Path);
                    }

                    await stats.AddExaminedFile(filestatsize);

                    e.MetaHashAndSize = options.StoreMetadata ? Utility.WrapMetadata(await MetadataGenerator.GenerateMetadataAsync(e.Path, e.Attributes, options, snapshot), options) : EMPTY_METADATA;

                    var timestampChanged = e.LastWrite != e.OldModified || e.LastWrite.Ticks == 0 || e.OldModified.Ticks == 0;
                    var filesizeChanged = filestatsize < 0 || e.LastFileSize < 0 || filestatsize != e.LastFileSize;
                    var tooLargeFile = options.SkipFilesLargerThan != long.MaxValue && options.SkipFilesLargerThan != 0 && filestatsize >= 0 && filestatsize > options.SkipFilesLargerThan;
                    e.MetadataChanged = !options.CheckFiletimeOnly && !options.SkipMetadata && (e.MetaHashAndSize.Blob.Length != e.OldMetaSize || e.MetaHashAndSize.FileHash != e.OldMetaHash);

                    if ((e.OldId < 0 || options.DisableFiletimeCheck || timestampChanged || filesizeChanged || e.MetadataChanged) && !tooLargeFile)
                    {
                        Logging.Log.WriteVerboseMessage(FILELOGTAG, "CheckFileForChanges", "Checking file for changes {0}, new: {1}, timestamp changed: {2}, size changed: {3}, metadatachanged: {4}, {5} vs {6}", e.Path, e.OldId <= 0, timestampChanged, filesizeChanged, e.MetadataChanged, e.LastWrite, e.OldModified);
                        await self.Output.WriteAsync(e);
                    }
                    else
                    {
                        if (tooLargeFile)
                        {
                            Logging.Log.WriteVerboseMessage(FILELOGTAG, "SkipCheckTooLarge", "Skipped checking file, because the size exceeds limit {0}", e.Path);
                        }
                        else
                        {
                            Logging.Log.WriteVerboseMessage(FILELOGTAG, "SkipCheckNoTimestampChange", "Skipped checking file, because timestamp was not updated {0}", e.Path);
                        }

                        await database.AddUnmodifiedAsync(e.OldId, e.LastWrite);
                    }
                }
            }));
        }
コード例 #2
0
        public static Task Run(Snapshots.ISnapshotService snapshot, Options options, BackupStatsCollector stats, BackupDatabase database)
        {
            return(AutomationExtensions.RunTask(
                       new
            {
                Input = Channels.ProcessedFiles.ForRead,
                ProgressChannel = Channels.ProgressEvents.ForWrite,
                Output = Channels.AcceptedChangedFile.ForWrite
            },

                       async self =>
            {
                var EMPTY_METADATA = Utility.WrapMetadata(new Dictionary <string, string>(), options);

                // Pre-cache the option variables here to simplify and
                // speed up repeated option access below

                var SKIPFILESLARGERTHAN = options.SkipFilesLargerThan;
                // Zero and max both indicate no size limit
                if (SKIPFILESLARGERTHAN == long.MaxValue)
                {
                    SKIPFILESLARGERTHAN = 0;
                }

                var DISABLEFILETIMECHECK = options.DisableFiletimeCheck;
                var CHECKFILETIMEONLY = options.CheckFiletimeOnly;
                var SKIPMETADATA = options.SkipMetadata;

                while (true)
                {
                    var e = await self.Input.ReadAsync();

                    long filestatsize = -1;
                    try
                    {
                        filestatsize = snapshot.GetFileSize(e.Path);
                    }
                    catch (Exception ex)
                    {
                        Logging.Log.WriteExplicitMessage(FILELOGTAG, "FailedToReadSize", ex, "Failed to read size of file: {0}", e.Path);
                    }

                    await stats.AddExaminedFile(filestatsize);

                    // Stop now if the file is too large
                    var tooLargeFile = SKIPFILESLARGERTHAN != 0 && filestatsize >= 0 && filestatsize > SKIPFILESLARGERTHAN;
                    if (tooLargeFile)
                    {
                        Logging.Log.WriteVerboseMessage(FILELOGTAG, "SkipCheckTooLarge", "Skipped checking file, because the size exceeds limit {0}", e.Path);
                        await self.ProgressChannel.WriteAsync(new ProgressEvent()
                        {
                            Filepath = e.Path, Length = filestatsize, Type = EventType.FileSkipped
                        });
                        continue;
                    }

                    // Invalid ID indicates a new file
                    var isNewFile = e.OldId < 0;

                    // If we disable the filetime check, we always assume that the file has changed
                    // Otherwise we check that the timestamps are different or if any of them are empty
                    var timestampChanged = DISABLEFILETIMECHECK || e.LastWrite != e.OldModified || e.LastWrite.Ticks == 0 || e.OldModified.Ticks == 0;

                    // Avoid generating a new matadata blob if timestamp has not changed
                    // and we only check for timestamp changes
                    if (CHECKFILETIMEONLY && !timestampChanged && !isNewFile)
                    {
                        Logging.Log.WriteVerboseMessage(FILELOGTAG, "SkipCheckNoTimestampChange", "Skipped checking file, because timestamp was not updated {0}", e.Path);
                        try
                        {
                            await database.AddUnmodifiedAsync(e.OldId, e.LastWrite);
                        }
                        catch (Exception ex)
                        {
                            if (ex.IsRetiredException())
                            {
                                throw;
                            }
                            Logging.Log.WriteWarningMessage(FILELOGTAG, "FailedToAddFile", ex, "Failed while attempting to add unmodified file to database: {0}", e.Path);
                        }
                        await self.ProgressChannel.WriteAsync(new ProgressEvent()
                        {
                            Filepath = e.Path, Length = filestatsize, Type = EventType.FileSkipped
                        });
                        continue;
                    }

                    // If we have have disabled the filetime check, we do not have the metadata info
                    // but we want to know if the metadata is potentially changed
                    if (!isNewFile && DISABLEFILETIMECHECK)
                    {
                        var tp = await database.GetMetadataHashAndSizeForFileAsync(e.OldId);
                        if (tp != null)
                        {
                            e.OldMetaSize = tp.Item1;
                            e.OldMetaHash = tp.Item2;
                        }
                    }

                    // Compute current metadata
                    e.MetaHashAndSize = SKIPMETADATA ? EMPTY_METADATA : Utility.WrapMetadata(MetadataGenerator.GenerateMetadata(e.Path, e.Attributes, options, snapshot), options);
                    e.MetadataChanged = !SKIPMETADATA && (e.MetaHashAndSize.Blob.Length != e.OldMetaSize || e.MetaHashAndSize.FileHash != e.OldMetaHash);

                    // Check if the file is new, or something indicates a change
                    var filesizeChanged = filestatsize < 0 || e.LastFileSize < 0 || filestatsize != e.LastFileSize;
                    if (isNewFile || timestampChanged || filesizeChanged || e.MetadataChanged)
                    {
                        Logging.Log.WriteVerboseMessage(FILELOGTAG, "CheckFileForChanges", "Checking file for changes {0}, new: {1}, timestamp changed: {2}, size changed: {3}, metadatachanged: {4}, {5} vs {6}", e.Path, isNewFile, timestampChanged, filesizeChanged, e.MetadataChanged, e.LastWrite, e.OldModified);
                        await self.Output.WriteAsync(e);
                    }
                    else
                    {
                        Logging.Log.WriteVerboseMessage(FILELOGTAG, "SkipCheckNoMetadataChange", "Skipped checking file, because no metadata was updated {0}", e.Path);
                        try
                        {
                            await database.AddUnmodifiedAsync(e.OldId, e.LastWrite);
                        }
                        catch (Exception ex)
                        {
                            Logging.Log.WriteWarningMessage(FILELOGTAG, "FailedToAddFile", ex, "Failed while attempting to add unmodified file to database: {0}", e.Path);
                        }
                        await self.ProgressChannel.WriteAsync(new ProgressEvent()
                        {
                            Filepath = e.Path, Length = filestatsize, Type = EventType.FileSkipped
                        });
                    }
                }
            }));
        }
コード例 #3
0
        public static Task Run(Snapshots.ISnapshotService snapshot, Options options, BackupDatabase database, BackupStatsCollector stats, ITaskReader taskreader)
        {
            return(AutomationExtensions.RunTask(
                       new
            {
                Input = Channels.AcceptedChangedFile.ForRead,
                StreamBlockChannel = Channels.StreamBlock.ForWrite,
            },

                       async self =>
            {
                var blocksize = options.Blocksize;

                while (await taskreader.ProgressAsync)
                {
                    var e = await self.Input.ReadAsync();

                    try
                    {
                        var hint = options.GetCompressionHintFromFilename(e.Path);
                        var oldHash = e.OldId < 0 ? null : await database.GetFileHashAsync(e.OldId);

                        StreamProcessResult filestreamdata;

                        // Process metadata and actual data in parallel
                        var metatask =
                            Task.Run(async() =>
                        {
                            // If we have determined that metadata has not changed, just grab the ID
                            if (!e.MetadataChanged)
                            {
                                var res = await database.GetMetadataIDAsync(e.MetaHashAndSize.FileHash, e.MetaHashAndSize.Blob.Length);
                                if (res.Item1)
                                {
                                    return res.Item2;
                                }

                                Logging.Log.WriteWarningMessage(FILELOGTAG, "UnexpextedMetadataLookup", null, "Metadata was reported as not changed, but still requires being added?\nHash: {0}, Length: {1}, ID: {2}, Path: {3}", e.MetaHashAndSize.FileHash, e.MetaHashAndSize.Blob.Length, res.Item2, e.Path);
                                e.MetadataChanged = true;
                            }

                            return (await MetadataPreProcess.AddMetadataToOutputAsync(e.Path, e.MetaHashAndSize, database, self.StreamBlockChannel)).Item2;
                        });

                        using (var fs = snapshot.OpenRead(e.Path))
                            filestreamdata = await StreamBlock.ProcessStream(self.StreamBlockChannel, e.Path, fs, false, hint);

                        await stats.AddOpenedFile(filestreamdata.Streamlength);

                        var metadataid = await metatask;
                        var filekey = filestreamdata.Streamhash;
                        var filesize = filestreamdata.Streamlength;

                        if (oldHash != filekey)
                        {
                            if (oldHash == null)
                            {
                                Logging.Log.WriteVerboseMessage(FILELOGTAG, "NewFile", "New file {0}", e.Path);
                            }
                            else
                            {
                                Logging.Log.WriteVerboseMessage(FILELOGTAG, "ChangedFile", "File has changed {0}", e.Path);
                            }

                            if (e.OldId < 0)
                            {
                                await stats.AddAddedFile(filesize);

                                if (options.Dryrun)
                                {
                                    Logging.Log.WriteVerboseMessage(FILELOGTAG, "WoudlAddNewFile", "Would add new file {0}, size {1}", e.Path, Library.Utility.Utility.FormatSizeString(filesize));
                                }
                            }
                            else
                            {
                                await stats.AddModifiedFile(filesize);

                                if (options.Dryrun)
                                {
                                    Logging.Log.WriteVerboseMessage(FILELOGTAG, "WoudlAddChangedFile", "Would add changed file {0}, size {1}", e.Path, Library.Utility.Utility.FormatSizeString(filesize));
                                }
                            }

                            await database.AddFileAsync(e.Path, e.LastWrite, filestreamdata.Blocksetid, metadataid);
                        }
                        else if (e.MetadataChanged)
                        {
                            Logging.Log.WriteVerboseMessage(FILELOGTAG, "FileMetadataChanged", "File has only metadata changes {0}", e.Path);
                            await database.AddFileAsync(e.Path, e.LastWrite, filestreamdata.Blocksetid, metadataid);
                        }
                        else /*if (e.OldId >= 0)*/
                        {
                            // When we write the file to output, update the last modified time
                            Logging.Log.WriteVerboseMessage(FILELOGTAG, "NoFileChanges", "File has not changed {0}", e.Path);

                            try
                            {
                                await database.AddUnmodifiedAsync(e.OldId, e.LastWrite);
                            }
                            catch (Exception ex)
                            {
                                Logging.Log.WriteWarningMessage(FILELOGTAG, "FailedToAddFile", ex, "Failed while attempting to add unmodified file to database: {0}", e.Path);
                            }
                        }
                    }
                    catch (Exception ex)
                    {
                        if (ex.IsRetiredException())
                        {
                            return;
                        }
                        else
                        {
                            Logging.Log.WriteWarningMessage(FILELOGTAG, "PathProcessingFailed", ex, "Failed to process path: {0}", e.Path);
                        }
                    }
                }
            }
                       ));
        }