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https://github.com/nestriness/cdc-file-transfer.git
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4326e972ac
The tools allow efficient and fast synchronization of large directory trees from a Windows workstation to a Linux target machine. cdc_rsync* support efficient copy of files by using content-defined chunking (CDC) to identify chunks within files that can be reused. asset_stream_manager + cdc_fuse_fs support efficient streaming of a local directory to a remote virtual file system based on FUSE. It also employs CDC to identify and reuse unchanged data chunks.
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/*
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CDC_RSYNC_FILE_FINDER_AND_SENDER_H_
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#define CDC_RSYNC_FILE_FINDER_AND_SENDER_H_
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#include <string>
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#include <vector>
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#include "absl/status/status.h"
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#include "cdc_rsync/client_file_info.h"
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#include "cdc_rsync/protos/messages.pb.h"
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namespace cdc_ft {
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class MessagePump;
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class PathFilter;
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class ReportFindFilesProgress {
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public:
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virtual ~ReportFindFilesProgress() = default;
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virtual void ReportFileFound() = 0;
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virtual void ReportDirFound() = 0;
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};
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class FileFinderAndSender {
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public:
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// Send AddFileRequests in packets of roughly 10k max by default.
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static constexpr size_t kDefaultRequestSizeThreshold = 10000;
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FileFinderAndSender(
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PathFilter* path_filter, MessagePump* message_pump,
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ReportFindFilesProgress* progress_, std::string sources_dir,
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bool recursive, bool relative,
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size_t request_byte_threshold = kDefaultRequestSizeThreshold);
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~FileFinderAndSender();
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absl::Status FindAndSendFiles(std::string source);
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// Sends the remaining file batch to the client, followed by an EOF indicator.
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// Should be called once all files have been deleted.
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absl::Status Flush();
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void ReleaseFiles(std::vector<ClientFileInfo>* files);
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void ReleaseDirs(std::vector<ClientDirInfo>* dirs);
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private:
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absl::Status HandleFoundFileOrDir(std::string dir, std::string filename,
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int64_t modified_time, uint64_t size,
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bool is_directory);
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// Sends the current file and directory batch to the server.
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absl::Status SendFilesAndDirs();
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PathFilter* const path_filter_;
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MessagePump* const message_pump_;
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ReportFindFilesProgress* const progress_;
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std::string sources_dir_;
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const bool recursive_;
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const bool relative_;
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const size_t request_size_threshold_;
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// Prefix removed from found files before they are sent to the server.
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std::string base_dir_;
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AddFilesRequest request_;
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size_t request_size_ = 0;
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// Found files.
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std::vector<ClientFileInfo> files_;
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// Found directories.
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std::vector<ClientDirInfo> dirs_;
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};
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} // namespace cdc_ft
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#endif // CDC_RSYNC_FILE_FINDER_AND_SENDER_H_
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