Files
scylladb/cdc/cdc_options.hh
Avi Kivity fcb8d040e8 treewide: use Software Package Data Exchange (SPDX) license identifiers
Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.

Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.

The changes we applied mechanically with a script, except to
licenses/README.md.

Closes #9937
2022-01-18 12:15:18 +01:00

72 lines
1.8 KiB
C++

/*
* Copyright (C) 2019-present ScyllaDB
*/
/*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#pragma once
#include <map>
#include <optional>
#include <seastar/core/sstring.hh>
#include "seastarx.hh"
namespace cdc {
enum class delta_mode : uint8_t {
keys,
full,
};
/**
* (for now only pre-) image collection mode.
* Stating how much info to record.
* off == none
* on == changed columns
* full == all (changed and unmodified columns)
*/
enum class image_mode : uint8_t {
off,
on,
full,
};
std::ostream& operator<<(std::ostream& os, delta_mode);
std::ostream& operator<<(std::ostream& os, image_mode);
class options final {
std::optional<bool> _enabled;
image_mode _preimage = image_mode::off;
bool _postimage = false;
delta_mode _delta_mode = delta_mode::full;
int _ttl = 86400; // 24h in seconds
public:
options() = default;
options(const std::map<sstring, sstring>& map);
std::map<sstring, sstring> to_map() const;
sstring to_sstring() const;
bool enabled() const { return _enabled.value_or(false); }
bool is_enabled_set() const { return _enabled.has_value(); }
bool preimage() const { return _preimage != image_mode::off; }
bool full_preimage() const { return _preimage == image_mode::full; }
bool postimage() const { return _postimage; }
delta_mode get_delta_mode() const { return _delta_mode; }
void set_delta_mode(delta_mode m) { _delta_mode = m; }
int ttl() const { return _ttl; }
void enabled(bool b) { _enabled = b; }
void preimage(bool b) { preimage(b ? image_mode::on : image_mode::off); }
void preimage(image_mode m) { _preimage = m; }
void postimage(bool b) { _postimage = b; }
void ttl(int v) { _ttl = v; }
bool operator==(const options& o) const;
bool operator!=(const options& o) const;
};
} // namespace cdc