mirror of
https://github.com/scylladb/scylladb.git
synced 2026-05-01 13:45:53 +00:00
fcb8d040e8
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
84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2018-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: AGPL-3.0-or-later
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <limits>
|
|
#include <type_traits>
|
|
#include <concepts>
|
|
#include <seastar/core/future.hh>
|
|
#include "gc_clock.hh"
|
|
#include "timestamp.hh"
|
|
#include "sstables/types.hh"
|
|
#include "sstables/exceptions.hh"
|
|
#include "clustering_bounds_comparator.hh"
|
|
#include "sstables/mx/types.hh"
|
|
|
|
namespace sstables {
|
|
|
|
class random_access_reader;
|
|
|
|
// Utilities for reading integral values in variable-length format
|
|
// See vint-serialization.hh for more details
|
|
future<uint64_t> read_unsigned_vint(random_access_reader& in);
|
|
future<int64_t> read_signed_vint(random_access_reader& in);
|
|
|
|
template <std::integral T>
|
|
inline future<> read_vint(random_access_reader& in, T& value) {
|
|
if constexpr(std::is_unsigned_v<T>) {
|
|
return read_unsigned_vint(in).then([&value] (uint64_t res) {
|
|
value = res;
|
|
});
|
|
} else {
|
|
return read_signed_vint(in).then([&value] (int64_t res) {
|
|
value = res;
|
|
});
|
|
}
|
|
}
|
|
|
|
inline api::timestamp_type parse_timestamp(const serialization_header& header,
|
|
uint64_t delta) {
|
|
return static_cast<api::timestamp_type>(header.get_min_timestamp() + delta);
|
|
}
|
|
|
|
inline gc_clock::duration parse_ttl(int64_t value) {
|
|
if (!is_expired_liveness_ttl(value)) {
|
|
if (value < 0) {
|
|
throw malformed_sstable_exception(format("Negative ttl: {}", value));
|
|
}
|
|
if (value > max_ttl.count()) {
|
|
throw malformed_sstable_exception(format("Too big ttl: {}", value));
|
|
}
|
|
}
|
|
return gc_clock::duration(value);
|
|
}
|
|
|
|
inline gc_clock::duration parse_ttl(const serialization_header& header,
|
|
uint64_t delta) {
|
|
// sign-extend min_ttl back to 64 bits and
|
|
// add the delta using unsigned arithmetic
|
|
// to prevent signed integer overflow
|
|
uint64_t min_ttl = static_cast<uint64_t>(header.get_min_ttl());
|
|
return parse_ttl(static_cast<int64_t>(min_ttl + delta));
|
|
}
|
|
|
|
inline gc_clock::time_point parse_expiry(int64_t value) {
|
|
return gc_clock::time_point(gc_clock::duration(value));
|
|
}
|
|
|
|
inline gc_clock::time_point parse_expiry(const serialization_header& header,
|
|
uint64_t delta) {
|
|
// sign-extend min_local_deletion_time back to 64 bits and
|
|
// add the delta using unsigned arithmetic
|
|
// to prevent signed integer overflow
|
|
uint64_t min_local_deletion_time = static_cast<uint64_t>(header.get_min_local_deletion_time());
|
|
return parse_expiry(static_cast<int64_t>(min_local_deletion_time + delta));
|
|
}
|
|
|
|
}; // namespace sstables
|