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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.
68 lines
2.0 KiB
C++
68 lines
2.0 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_FUSE_FS_CONFIG_STREAM_CLIENT_H_
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#define CDC_FUSE_FS_CONFIG_STREAM_CLIENT_H_
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#include <memory>
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#include "absl/status/status.h"
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#include "grpcpp/grpcpp.h"
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#include "manifest/manifest_proto_defs.h"
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#include "proto/asset_stream_service.grpc.pb.h"
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namespace grpc_impl {
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class Channel;
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}
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namespace cdc_ft {
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class ManifestIdReader;
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class ConfigStreamClient {
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public:
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// |instance| is the id of the gamelet.
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// |channel| is a gRPC channel to use.
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ConfigStreamClient(std::string instance,
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std::shared_ptr<grpc::Channel> channel);
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~ConfigStreamClient();
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// Sends a request to get a stream of manifest id updates. |callback| is
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// called from a background thread for every manifest id received.
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// Returns immediately without waiting for the first manifest id.
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absl::Status StartListeningToManifestUpdates(
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std::function<absl::Status(const ContentIdProto&)> callback);
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// Sends a message to indicate that the |manifest_id| was received and FUSE
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// has been updated to use the new manifest.
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absl::Status SendManifestAck(ContentIdProto manifest_id);
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// Stops listening for manifest updates.
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void Shutdown();
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private:
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using ConfigStreamService = proto::ConfigStreamService;
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const std::string instance_;
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const std::unique_ptr<ConfigStreamService::Stub> stub_;
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std::unique_ptr<ManifestIdReader> read_client_;
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};
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} // namespace cdc_ft
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#endif // CDC_FUSE_FS_CONFIG_STREAM_CLIENT_H_
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