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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.
66 lines
2.1 KiB
C++
66 lines
2.1 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_SERVER_FILE_DELETER_AND_SENDER_H_
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#define CDC_RSYNC_SERVER_FILE_DELETER_AND_SENDER_H_
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#include <string>
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#include "absl/status/status.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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// Deletes files and sends info about deleted files to the client.
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class FileDeleterAndSender {
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public:
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// Send AddDeletedFileResponse in packets of roughly 10k max by default.
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static constexpr size_t kDefaultResponseSizeThreshold = 10000;
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FileDeleterAndSender(
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MessagePump* message_pump,
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size_t response_size_threshold = kDefaultResponseSizeThreshold);
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~FileDeleterAndSender();
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// Deletes |base_dir| + |relative_path| and send |relative_path| the client.
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// Deletion happens for either a directory or a file and only in a non dry-run
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// mode.
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absl::Status DeleteAndSendFileOrDir(const std::string& base_dir,
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const std::string& relative_path,
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bool dry_run, bool is_directory);
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// Sends the remaining file and directory batch to the client, followed by an
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// EOF indicator. Should be called once all files and directories have been
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// deleted.
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absl::Status Flush();
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private:
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// Sends the current batch to the client.
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absl::Status SendFilesAndDirs();
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MessagePump* const message_pump_;
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const size_t request_size_threshold_;
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AddDeletedFilesResponse response_;
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size_t response_size_ = 0;
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};
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} // namespace cdc_ft
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#endif // CDC_RSYNC_SERVER_FILE_DELETER_AND_SENDER_H_
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