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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.
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
// 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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#include "data_store/data_store_writer.h"
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#include "absl/strings/str_format.h"
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#include "common/status.h"
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#include "manifest/content_id.h"
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namespace cdc_ft {
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bool DataStoreWriter::Contains(const ContentIdProto& content_id) {
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Buffer buffer;
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return Get(content_id, &buffer).ok();
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}
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absl::Status DataStoreWriter::PutProto(
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const google::protobuf::MessageLite& proto, ContentIdProto* content_id,
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size_t* proto_size) {
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// Serialize the proto.
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std::string out;
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if (!proto.SerializeToString(&out)) {
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return absl::InternalError(
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absl::StrFormat("Failed to serialize %s.", proto.GetTypeName()));
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}
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// Calculate the proto's content ID.
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*content_id = ContentId::FromDataString(out);
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if (proto_size) *proto_size = out.size();
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// Write manifest chunk to storage.
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return Put(*content_id, out.c_str(), out.size());
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}
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} // namespace cdc_ft
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