mirror of
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.
102 lines
3.0 KiB
C++
102 lines
3.0 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 COMMON_STATUS_H_
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#define COMMON_STATUS_H_
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#include "absl/status/status.h"
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#include "absl/strings/str_cat.h"
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#include "absl/strings/str_format.h"
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#include "common/platform.h"
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namespace cdc_ft {
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//
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// Convenience helper functions for status creation.
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//
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inline absl::Status MakeStatus(const char* message) {
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return absl::InternalError(message);
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}
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template <typename... Args>
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absl::Status MakeStatus(const absl::FormatSpec<Args...>& format, Args... args) {
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return absl::InternalError(absl::StrFormat(format, args...));
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}
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// Convenience helper for cases that may or may not have a message to wrap.
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template <typename... Args>
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absl::Status WrapStatus(absl::Status inner_status) {
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return inner_status;
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}
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// Returns OK if |inner_status| is OK and a copy of |inner_status| with given
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// message + |inner_status|'s message otherwise.
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template <typename... Args>
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absl::Status WrapStatus(absl::Status inner_status,
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const absl::FormatSpec<Args...>& format, Args... args) {
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if (inner_status.ok()) {
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return inner_status;
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}
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std::string message = absl::StrFormat(format, args...);
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absl::Status wrapped_status(
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inner_status.code(), absl::StrCat(inner_status.message(), "; ", message));
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inner_status.ForEachPayload(
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[&wrapped_status](absl::string_view key, const absl::Cord& value) {
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wrapped_status.SetPayload(key, value);
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});
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return wrapped_status;
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}
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//
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// Tags attached to absl::Status to allow more fine-grained error handling.
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//
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enum class Tag : uint8_t {
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// Sending end of the socket was closed, so receiving end can no longer read.
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kSocketEof = 0,
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// Bind failed, probably because there's another instance of cdc_rsync
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// running.
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kAddressInUse = 1,
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// The gamelet components need to be re-deployed.
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kDeployServer = 2,
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// Something asks for user input, but we're in quiet mode.
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kInstancePickerNotAvailableInQuietMode = 3,
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// Timeout while trying to connect to the gamelet component.
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kConnectionTimeout = 4,
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// MUST BE LAST.
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kCount = 5,
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};
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// Tags a status. No-op if |status| is OK. Overwrites existing tags.
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absl::Status SetTag(absl::Status status, Tag tag);
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// Returns the associated tag. Empty if none.
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absl::optional<Tag> GetTag(const absl::Status& status);
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// Checks whether the status has a certain tag.
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bool HasTag(const absl::Status& status, Tag tag);
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} // namespace cdc_ft
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#endif // COMMON_STATUS_H_
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