private static void ScanForExistingTargetBlocks(LocalRestoreDatabase database, byte[] blockbuffer, System.Security.Cryptography.HashAlgorithm blockhasher, System.Security.Cryptography.HashAlgorithm filehasher, Options options, RestoreResults result)
{
// Scan existing files for existing BLOCKS
using(var blockmarker = database.CreateBlockMarker())
{
var updateCount = 0L;
foreach(var restorelist in database.GetExistingFilesWithBlocks())
{
var rename = !options.Overwrite;
var targetpath = restorelist.TargetPath;
var targetfileid = restorelist.TargetFileID;
var targetfilehash = restorelist.TargetHash;
if (m_systemIO.FileExists(targetpath))
{
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
return;
if (rename)
filehasher.Initialize();
using(var file = m_systemIO.FileOpenReadWrite(targetpath))
using(var block = new Blockprocessor(file, blockbuffer))
foreach(var targetblock in restorelist.Blocks)
{
var size = block.Readblock();
if (size <= 0)
break;
if (size == targetblock.Size)
{
var key = Convert.ToBase64String(blockhasher.ComputeHash(blockbuffer, 0, size));
if (key == targetblock.Hash)
{
blockmarker.SetBlockRestored(targetfileid, targetblock.Index, key, size);
}
}
if (rename)
filehasher.TransformBlock(blockbuffer, 0, size, blockbuffer, 0);
}
if (rename)
{
filehasher.TransformFinalBlock(blockbuffer, 0, 0);
var filekey = Convert.ToBase64String(filehasher.Hash);
if (filekey == targetfilehash)
{
result.AddVerboseMessage("Target file exists and is correct version: {0}", targetpath);
rename = false;
}
else
{
// The new file will have none of the correct blocks,
// even if the scanned file had some
blockmarker.SetAllBlocksMissing(targetfileid);
}
}
if (updateCount++ % 20 == 0)
{
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
if (result.TaskControlRendevouz() == TaskControlState.Stop)
return;
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to read target file: \"{0}\", message: {1}", targetpath, ex.Message), ex);
if (ex is System.Threading.ThreadAbortException)
throw;
}
}
else
{
result.AddVerboseMessage("Target file does not exist: {0}", targetpath);
rename = false;
}
if (rename)
{
//Select a new filename
var ext = m_systemIO.PathGetExtension(targetpath) ?? "";
if (!string.IsNullOrEmpty(ext) && !ext.StartsWith("."))
ext = "." + ext;
// First we try with a simple date append, assuming that there are not many conflicts there
var newname = m_systemIO.PathChangeExtension(targetpath, null) + "." + database.RestoreTime.ToLocalTime().ToString("yyyy-MM-dd");
var tr = newname + ext;
var c = 0;
while (m_systemIO.FileExists(tr) && c < 1000)
{
try
{
// If we have a file with the correct name,
// it is most likely the file we want
filehasher.Initialize();
string key;
using(var file = m_systemIO.FileOpenReadWrite(tr))
key = Convert.ToBase64String(filehasher.ComputeHash(file));
if (key == targetfilehash)
{
blockmarker.SetAllBlocksRestored(targetfileid);
break;
}
}
catch(Exception ex)
{
result.AddWarning(string.Format("Failed to read candidate restore target {0}", tr), ex);
}
tr = newname + " (" + (c++).ToString() + ")" + ext;
}
newname = tr;
result.AddVerboseMessage("Target file exists and will be restored to: {0}", newname);
database.UpdateTargetPath(targetfileid, newname);
}
}
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
blockmarker.Commit(result);
}
}
private static void ScanForExistingSourceBlocks(LocalRestoreDatabase database, Options options, byte[] blockbuffer, System.Security.Cryptography.HashAlgorithm hasher, RestoreResults result)
{
// Fill BLOCKS with data from known local source files
using (var blockmarker = database.CreateBlockMarker())
{
var updateCount = 0L;
foreach (var restorelist in database.GetFilesAndSourceBlocks())
{
var targetpath = restorelist.TargetPath;
var targetfileid = restorelist.TargetFileID;
var patched = false;
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
return;
var folderpath = m_systemIO.PathGetDirectoryName(targetpath);
if (!options.Dryrun && !m_systemIO.DirectoryExists(folderpath))
{
result.AddWarning(string.Format("Creating missing folder {0} for file {1}", folderpath, targetpath), null);
m_systemIO.DirectoryCreate(folderpath);
}
using (var file = options.Dryrun ? null : m_systemIO.FileOpenReadWrite(targetpath))
using (var block = new Blockprocessor(file, blockbuffer))
foreach (var targetblock in restorelist.Blocks)
{
if (!options.Dryrun)
file.Position = targetblock.Offset;
foreach (var source in targetblock.Blocksources)
{
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
return;
if (m_systemIO.FileExists(source.Path))
using (var sourcefile = m_systemIO.FileOpenRead(source.Path))
{
sourcefile.Position = source.Offset;
var size = sourcefile.Read(blockbuffer, 0, blockbuffer.Length);
if (size == targetblock.Size)
{
var key = Convert.ToBase64String(hasher.ComputeHash(blockbuffer, 0, size));
if (key == targetblock.Hash)
{
patched = true;
if (!options.Dryrun)
file.Write(blockbuffer, 0, size);
blockmarker.SetBlockRestored(targetfileid, targetblock.Index, key, targetblock.Size);
break;
}
}
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to patch file: \"{0}\" with data from local file \"{1}\", message: {2}", targetpath, source.Path, ex.Message), ex);
if (ex is System.Threading.ThreadAbortException)
throw;
}
}
}
if (updateCount++ % 20 == 0)
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to patch file: \"{0}\" with local data, message: {1}", targetpath, ex.Message), ex);
}
if (patched)
result.AddVerboseMessage("Target file is patched with some local data: {0}", targetpath);
else
result.AddVerboseMessage("Target file is not patched any local data: {0}", targetpath);
if (patched && options.Dryrun)
result.AddDryrunMessage(string.Format("Would patch file with local data: {0}", targetpath));
}
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
blockmarker.Commit(result);
}
}
private static void CreateDirectoryStructure(LocalRestoreDatabase database, Options options, RestoreResults result)
{
// This part is not protected by try/catch as we need the target folder to exist
if (!string.IsNullOrEmpty(options.Restorepath))
if (!m_systemIO.DirectoryExists(options.Restorepath))
{
if (options.Verbose)
result.AddVerboseMessage("Creating folder: {0}", options.Restorepath);
if (options.Dryrun)
result.AddDryrunMessage(string.Format("Would create folder: {0}", options.Restorepath));
else
m_systemIO.DirectoryCreate(options.Restorepath);
}
foreach (var folder in database.GetTargetFolders())
{
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
return;
if (!m_systemIO.DirectoryExists(folder))
{
result.FoldersRestored++;
if (options.Verbose)
result.AddVerboseMessage("Creating folder: {0}", folder);
if (options.Dryrun)
result.AddDryrunMessage(string.Format("Would create folder: {0}", folder));
else
m_systemIO.DirectoryCreate(folder);
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to create folder: \"{0}\", message: {1}", folder, ex.Message), ex);
}
try
{
if (!options.Dryrun)
ApplyMetadata(folder, database);
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to set folder metadata: \"{0}\", message: {1}", folder, ex.Message), ex);
}
}
}
private static void ScanForExistingTargetBlocks(LocalRestoreDatabase database, byte[] blockbuffer, System.Security.Cryptography.HashAlgorithm blockhasher, System.Security.Cryptography.HashAlgorithm filehasher, Options options, RestoreResults result)
{
// Scan existing files for existing BLOCKS
using(var blockmarker = database.CreateBlockMarker())
{
var updateCount = 0L;
foreach(var restorelist in database.GetExistingFilesWithBlocks())
{
var rename = !options.Overwrite;
var targetpath = restorelist.TargetPath;
var targetfileid = restorelist.TargetFileID;
var targetfilehash = restorelist.TargetHash;
var targetfilelength = restorelist.Length;
if (m_systemIO.FileExists(targetpath))
{
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
return;
var currentfilelength = m_systemIO.FileLength(targetpath);
var wasTruncated = false;
// Adjust file length in overwrite mode if necessary (smaller is ok, will be extended during restore)
// We do it before scanning for blocks. This allows full verification on files that only needs to
// be truncated (i.e. forthwritten log files).
if (!rename && currentfilelength > targetfilelength)
{
var currentAttr = m_systemIO.GetFileAttributes(targetpath);
if ((currentAttr & System.IO.FileAttributes.ReadOnly) != 0) // clear readonly attribute
{
if (options.Dryrun) result.AddDryrunMessage(string.Format("Would reset read-only attribute on file: {0}", targetpath));
else m_systemIO.SetFileAttributes(targetpath, currentAttr & ~System.IO.FileAttributes.ReadOnly);
}
if (options.Dryrun)
result.AddDryrunMessage(string.Format("Would truncate file '{0}' to length of {1:N0} bytes", targetpath, targetfilelength));
else
{
using (var file = m_systemIO.FileOpenWrite(targetpath))
file.SetLength(targetfilelength);
currentfilelength = targetfilelength;
}
wasTruncated = true;
}
// If file size does not match and we have to rename on conflict,
// the whole scan can be skipped here because all blocks have to be restored anyway.
// For the other cases, we will check block and and file hashes and look for blocks
// to be restored and files that can already be verified.
if (!rename || currentfilelength == targetfilelength)
{
// a file hash for verification will only be necessary if the file has exactly
// the wanted size so we have a chance to already mark the file as data-verified.
bool calcFileHash = (currentfilelength == targetfilelength);
if (calcFileHash) filehasher.Initialize();
using (var file = m_systemIO.FileOpenRead(targetpath))
using (var block = new Blockprocessor(file, blockbuffer))
foreach (var targetblock in restorelist.Blocks)
{
var size = block.Readblock();
if (size <= 0)
break;
//TODO: Handle Metadata
bool blockhashmatch = false;
if (size == targetblock.Size)
{
// Parallelize file hash calculation on rename. Running read-only on same array should not cause conflicts or races.
// Actually, in future always calculate the file hash and mark the file data as already verified.
System.Threading.Tasks.Task calcFileHashTask = null;
if (calcFileHash)
calcFileHashTask = System.Threading.Tasks.Task.Run(
() => filehasher.TransformBlock(blockbuffer, 0, size, blockbuffer, 0));
var key = Convert.ToBase64String(blockhasher.ComputeHash(blockbuffer, 0, size));
if (calcFileHashTask != null) calcFileHashTask.Wait(); // wait because blockbuffer will be overwritten.
if (key == targetblock.Hash)
{
blockmarker.SetBlockRestored(targetfileid, targetblock.Index, key, size, false);
blockhashmatch = true;
}
}
if (calcFileHash && !blockhashmatch) // will not be necessary anymore
{
filehasher.TransformFinalBlock(blockbuffer, 0, 0); // So a new initialize will not throw
calcFileHash = false;
if (rename) // file does not match. So break.
break;
}
}
bool fullfilehashmatch = false;
if (calcFileHash) // now check if files are identical
{
filehasher.TransformFinalBlock(blockbuffer, 0, 0);
var filekey = Convert.ToBase64String(filehasher.Hash);
fullfilehashmatch = (filekey == targetfilehash);
}
if (!rename && !fullfilehashmatch && !wasTruncated) // Reset read-only attribute (if set) to overwrite
{
var currentAttr = m_systemIO.GetFileAttributes(targetpath);
if ((currentAttr & System.IO.FileAttributes.ReadOnly) != 0)
{
if (options.Dryrun) result.AddDryrunMessage(string.Format("Would reset read-only attribute on file: {0}", targetpath));
else m_systemIO.SetFileAttributes(targetpath, currentAttr & ~System.IO.FileAttributes.ReadOnly);
}
}
if (fullfilehashmatch)
{
//TODO: Check metadata to trigger rename? If metadata changed, it will still be restored for the file in-place.
blockmarker.SetFileDataVerified(targetfileid);
result.AddVerboseMessage("Target file exists{1} and is correct version: {0}", targetpath, wasTruncated ? " (but was truncated)" : "");
rename = false;
}
else if (rename)
{
// The new file will have none of the correct blocks,
// even if the scanned file had some
blockmarker.SetAllBlocksMissing(targetfileid);
}
}
if ((++updateCount) % 20 == 0)
{
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
if (result.TaskControlRendevouz() == TaskControlState.Stop)
return;
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to read target file: \"{0}\", message: {1}", targetpath, ex.Message), ex);
if (ex is System.Threading.ThreadAbortException)
throw;
}
}
else
{
result.AddVerboseMessage("Target file does not exist: {0}", targetpath);
rename = false;
}
if (rename)
{
//Select a new filename
var ext = m_systemIO.PathGetExtension(targetpath) ?? "";
if (!string.IsNullOrEmpty(ext) && !ext.StartsWith("."))
ext = "." + ext;
// First we try with a simple date append, assuming that there are not many conflicts there
var newname = m_systemIO.PathChangeExtension(targetpath, null) + "." + database.RestoreTime.ToLocalTime().ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture);
var tr = newname + ext;
var c = 0;
while (m_systemIO.FileExists(tr) && c < 1000)
{
try
{
// If we have a file with the correct name,
// it is most likely the file we want
filehasher.Initialize();
string key;
using(var file = m_systemIO.FileOpenRead(tr))
key = Convert.ToBase64String(filehasher.ComputeHash(file));
if (key == targetfilehash)
{
//TODO: Also needs metadata check to make correct decision.
// We stick to the policy to restore metadata in place, if data ok. So, metadata block may be restored.
blockmarker.SetAllBlocksRestored(targetfileid, false);
blockmarker.SetFileDataVerified(targetfileid);
break;
}
}
catch(Exception ex)
{
result.AddWarning(string.Format("Failed to read candidate restore target {0}", tr), ex);
}
tr = newname + " (" + (c++).ToString() + ")" + ext;
}
newname = tr;
result.AddVerboseMessage("Target file exists and will be restored to: {0}", newname);
database.UpdateTargetPath(targetfileid, newname);
}
}
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
blockmarker.Commit(result);
}
}
public void Run(string[] paths, Library.Utility.IFilter filter = null)
{
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Restore_Begin);
// If we have both target paths and a filter, combine into a single filter
filter = Library.Utility.JoinedFilterExpression.Join(new Library.Utility.FilterExpression(paths), filter);
if (!m_options.NoLocalDb && m_systemIO.FileExists(m_options.Dbpath))
{
using (var db = new LocalRestoreDatabase(m_options.Dbpath, m_options.Blocksize))
{
db.SetResult(m_result);
DoRun(db, filter, m_result);
db.WriteResults();
}
return;
}
m_result.AddMessage("No local database, building a temporary database");
m_result.OperationProgressUpdater.UpdatePhase(OperationPhase.Restore_RecreateDatabase);
using (var tmpdb = new Library.Utility.TempFile())
{
RecreateDatabaseHandler.NumberedFilterFilelistDelegate filelistfilter = FilterNumberedFilelist(m_options.Time, m_options.Version);
// Simultaneously with downloading blocklists, we patch as much as we can from the blockvolumes
// This prevents repeated downloads, except for cases where the blocklists refer blocks
// that have been previously handled. A local blockvolume cache can reduce this issue
using (var database = new LocalRestoreDatabase(tmpdb, m_options.Blocksize))
{
var blockhasher = System.Security.Cryptography.HashAlgorithm.Create(m_options.BlockHashAlgorithm);
var filehasher = System.Security.Cryptography.HashAlgorithm.Create(m_options.FileHashAlgorithm);
if (blockhasher == null)
{
throw new Exception(string.Format(Strings.Foresthash.InvalidHashAlgorithm, m_options.BlockHashAlgorithm));
}
if (!blockhasher.CanReuseTransform)
{
throw new Exception(string.Format(Strings.Foresthash.InvalidCryptoSystem, m_options.BlockHashAlgorithm));
}
if (filehasher == null)
{
throw new Exception(string.Format(Strings.Foresthash.InvalidHashAlgorithm, m_options.FileHashAlgorithm));
}
if (!filehasher.CanReuseTransform)
{
throw new Exception(string.Format(Strings.Foresthash.InvalidCryptoSystem, m_options.FileHashAlgorithm));
}
bool first = true;
RecreateDatabaseHandler.BlockVolumePostProcessor localpatcher =
(key, rd) =>
{
if (first)
{
//Figure out what files are to be patched, and what blocks are needed
PrepareBlockAndFileList(database, m_options, filter, m_result);
// Don't run this again
first = false;
}
else
{
// Patch the missing blocks list to include the newly discovered blocklists
//UpdateMissingBlocksTable(key);
}
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
CreateDirectoryStructure(database, m_options, m_result);
//If we are patching an existing target folder, do not touch stuff that is already updated
ScanForExistingTargetBlocks(database, m_blockbuffer, blockhasher, filehasher, m_options, m_result);
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
#if DEBUG
if (!m_options.NoLocalBlocks)
#endif
// If other local files already have the blocks we want, we use them instead of downloading
ScanForExistingSourceBlocks(database, m_options, m_blockbuffer, blockhasher, m_result);
if (m_result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
//Update files with data
PatchWithBlocklist(database, rd, m_options, m_result, m_blockbuffer);
};
// TODO: When UpdateMissingBlocksTable is implemented, the localpatcher can be activated
// and this will reduce the need for multiple downloads of the same volume
// TODO: This will need some work to preserve the missing block list for use with --fh-dryrun
m_result.RecreateDatabaseResults = new RecreateDatabaseResults(m_result);
using (new Logging.Timer("Recreate temporary database for restore"))
new RecreateDatabaseHandler(m_backendurl, m_options, (RecreateDatabaseResults)m_result.RecreateDatabaseResults)
.DoRun(database, filter, filelistfilter, /*localpatcher*/ null);
//If we have --version set, we need to adjust, as the db has only the required versions
//TODO: Bit of a hack to set options that way
if (m_options.Version != null && m_options.Version.Length > 0)
{
m_options.RawOptions["version"] = string.Join(",", Enumerable.Range(0, m_options.Version.Length).Select(x => x.ToString()));
}
DoRun(database, filter, m_result);
}
}
}
private static void ScanForExistingTargetBlocks(LocalRestoreDatabase database, byte[] blockbuffer, System.Security.Cryptography.HashAlgorithm blockhasher, System.Security.Cryptography.HashAlgorithm filehasher, Options options, RestoreResults result)
{
// Scan existing files for existing BLOCKS
using (var blockmarker = database.CreateBlockMarker())
{
var updateCount = 0L;
foreach (var restorelist in database.GetExistingFilesWithBlocks())
{
var rename = !options.Overwrite;
var targetpath = restorelist.TargetPath;
var targetfileid = restorelist.TargetFileID;
var targetfilehash = restorelist.TargetHash;
if (m_systemIO.FileExists(targetpath))
{
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
if (rename)
{
filehasher.Initialize();
}
using (var file = m_systemIO.FileOpenReadWrite(targetpath))
using (var block = new Blockprocessor(file, blockbuffer))
foreach (var targetblock in restorelist.Blocks)
{
var size = block.Readblock();
if (size <= 0)
{
break;
}
if (size == targetblock.Size)
{
var key = Convert.ToBase64String(blockhasher.ComputeHash(blockbuffer, 0, size));
if (key == targetblock.Hash)
{
blockmarker.SetBlockRestored(targetfileid, targetblock.Index, key, size);
}
}
if (rename)
{
filehasher.TransformBlock(blockbuffer, 0, size, blockbuffer, 0);
}
}
if (rename)
{
filehasher.TransformFinalBlock(blockbuffer, 0, 0);
var filekey = Convert.ToBase64String(filehasher.Hash);
if (filekey == targetfilehash)
{
result.AddVerboseMessage("Target file exists and is correct version: {0}", targetpath);
rename = false;
}
else
{
// The new file will have none of the correct blocks,
// even if the scanned file had some
blockmarker.SetAllBlocksMissing(targetfileid);
}
}
if (updateCount++ % 20 == 0)
{
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
if (result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to read target file: \"{0}\", message: {1}", targetpath, ex.Message), ex);
if (ex is System.Threading.ThreadAbortException)
{
throw;
}
}
}
else
{
result.AddVerboseMessage("Target file does not exist: {0}", targetpath);
rename = false;
}
if (rename)
{
//Select a new filename
var ext = m_systemIO.PathGetExtension(targetpath) ?? "";
if (!string.IsNullOrEmpty(ext) && !ext.StartsWith("."))
{
ext = "." + ext;
}
// First we try with a simple date append, assuming that there are not many conflicts there
var newname = m_systemIO.PathChangeExtension(targetpath, null) + "." + database.RestoreTime.ToLocalTime().ToString("yyyy-MM-dd");
var tr = newname + ext;
var c = 0;
while (m_systemIO.FileExists(tr) && c < 1000)
{
try
{
// If we have a file with the correct name,
// it is most likely the file we want
filehasher.Initialize();
string key;
using (var file = m_systemIO.FileOpenReadWrite(tr))
key = Convert.ToBase64String(filehasher.ComputeHash(file));
if (key == targetfilehash)
{
blockmarker.SetAllBlocksRestored(targetfileid);
break;
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to read candidate restore target {0}", tr), ex);
}
tr = newname + " (" + (c++).ToString() + ")" + ext;
}
newname = tr;
result.AddVerboseMessage("Target file exists and will be restored to: {0}", newname);
database.UpdateTargetPath(targetfileid, newname);
}
}
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
blockmarker.Commit(result);
}
}
private static void CreateDirectoryStructure(LocalRestoreDatabase database, Options options, RestoreResults result)
{
// This part is not protected by try/catch as we need the target folder to exist
if (!string.IsNullOrEmpty(options.Restorepath))
{
if (!m_systemIO.DirectoryExists(options.Restorepath))
{
if (options.Verbose)
{
result.AddVerboseMessage("Creating folder: {0}", options.Restorepath);
}
if (options.Dryrun)
{
result.AddDryrunMessage(string.Format("Would create folder: {0}", options.Restorepath));
}
else
{
m_systemIO.DirectoryCreate(options.Restorepath);
}
}
}
foreach (var folder in database.GetTargetFolders())
{
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
if (!m_systemIO.DirectoryExists(folder))
{
result.FoldersRestored++;
if (options.Verbose)
{
result.AddVerboseMessage("Creating folder: {0}", folder);
}
if (options.Dryrun)
{
result.AddDryrunMessage(string.Format("Would create folder: {0}", folder));
}
else
{
m_systemIO.DirectoryCreate(folder);
}
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to create folder: \"{0}\", message: {1}", folder, ex.Message), ex);
}
try
{
if (!options.Dryrun)
{
ApplyMetadata(folder, database);
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to set folder metadata: \"{0}\", message: {1}", folder, ex.Message), ex);
}
}
}
private static void ScanForExistingSourceBlocks(LocalRestoreDatabase database, Options options, byte[] blockbuffer, System.Security.Cryptography.HashAlgorithm hasher, RestoreResults result)
{
// Fill BLOCKS with data from known local source files
using (var blockmarker = database.CreateBlockMarker())
{
var updateCount = 0L;
foreach (var restorelist in database.GetFilesAndSourceBlocks())
{
var targetpath = restorelist.TargetPath;
var targetfileid = restorelist.TargetFileID;
var patched = false;
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
var folderpath = m_systemIO.PathGetDirectoryName(targetpath);
if (!options.Dryrun && !m_systemIO.DirectoryExists(folderpath))
{
result.AddWarning(string.Format("Creating missing folder {0} for file {1}", folderpath, targetpath), null);
m_systemIO.DirectoryCreate(folderpath);
}
using (var file = options.Dryrun ? null : m_systemIO.FileOpenReadWrite(targetpath))
using (var block = new Blockprocessor(file, blockbuffer))
foreach (var targetblock in restorelist.Blocks)
{
if (!options.Dryrun)
{
file.Position = targetblock.Offset;
}
foreach (var source in targetblock.Blocksources)
{
try
{
if (result.TaskControlRendevouz() == TaskControlState.Stop)
{
return;
}
if (m_systemIO.FileExists(source.Path))
{
using (var sourcefile = m_systemIO.FileOpenRead(source.Path))
{
sourcefile.Position = source.Offset;
var size = sourcefile.Read(blockbuffer, 0, blockbuffer.Length);
if (size == targetblock.Size)
{
var key = Convert.ToBase64String(hasher.ComputeHash(blockbuffer, 0, size));
if (key == targetblock.Hash)
{
patched = true;
if (!options.Dryrun)
{
file.Write(blockbuffer, 0, size);
}
blockmarker.SetBlockRestored(targetfileid, targetblock.Index, key, targetblock.Size);
break;
}
}
}
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to patch file: \"{0}\" with data from local file \"{1}\", message: {2}", targetpath, source.Path, ex.Message), ex);
if (ex is System.Threading.ThreadAbortException)
{
throw;
}
}
}
}
if (updateCount++ % 20 == 0)
{
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
}
}
catch (Exception ex)
{
result.AddWarning(string.Format("Failed to patch file: \"{0}\" with local data, message: {1}", targetpath, ex.Message), ex);
}
if (patched)
{
result.AddVerboseMessage("Target file is patched with some local data: {0}", targetpath);
}
else
{
result.AddVerboseMessage("Target file is not patched any local data: {0}", targetpath);
}
if (patched && options.Dryrun)
{
result.AddDryrunMessage(string.Format("Would patch file with local data: {0}", targetpath));
}
}
blockmarker.UpdateProcessed(result.OperationProgressUpdater);
blockmarker.Commit(result);
}
}
