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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.
74 lines
2.6 KiB
C++
74 lines
2.6 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 MANIFEST_FAKE_MANIFEST_BUILDER_H_
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#define MANIFEST_FAKE_MANIFEST_BUILDER_H_
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#include "manifest/manifest_proto_defs.h"
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namespace cdc_ft {
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class MemDataStore;
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// In-memory manifest builder. Useful for testing.
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class FakeManifestBuilder {
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public:
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// Permissions assigned to the root directory.
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static constexpr uint32_t kRootDirPerms = 0755u;
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explicit FakeManifestBuilder(MemDataStore* store);
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~FakeManifestBuilder();
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// Adds a new file of given the |name| to the directory |dir_asset| and sets
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// the modified time to |mtime_sec| and permissions to |permissions|. Also
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// generates data chunks from |data| using fastcdc (hardcoded chunk sizes).
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// Use builder.AddFile(builder.Root(), ...) to add a file to the root
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// directory.
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void AddFile(AssetProto* dir_asset, const char* name, int64_t mtime_sec,
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uint32_t permissions, const std::vector<char>& data);
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// Adds a new directory of the given |name| to the directory |dir_asset| and
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// sets the modified time to |mtime_sec| and permissions to |permissions|.
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// Returns a pointer to the new directory that can be used to further add
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// files or subdirectories.
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// Use builder.AddDirectory(builder.Root(), ...) to add a directory to the
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// root directory.
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AssetProto* AddDirectory(AssetProto* dir_asset, const char* name,
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int64_t mtime_sec, uint32_t permissions);
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// Builds a fake directory structure with files and subdirectories suitable
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// for prototyping/testing.
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ContentIdProto BuildTestData();
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// Returns the built manifest.
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const ManifestProto* Manifest() const;
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// Shortcut to &Manifest()->root_dir().
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AssetProto* Root();
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// Updates the file |name| with new |permissions|, |mtime_sec|, and |data|.
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void ModifyFile(AssetProto* dir_asset, const char* name, int64_t mtime_sec,
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uint32_t permissions, const std::vector<char>& data);
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private:
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MemDataStore* const store_;
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ManifestProto manifest_;
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};
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} // namespace cdc_ft
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#endif // MANIFEST_FAKE_MANIFEST_BUILDER_H_
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