133 lines
4.4 KiB
C++
133 lines
4.4 KiB
C++
/*
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* Copyright (C) 2018 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <limits>
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#include <type_traits>
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#include <seastar/core/future.hh>
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#include "gc_clock.hh"
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#include "timestamp.hh"
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#include "sstables/types.hh"
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#include "sstables/exceptions.hh"
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#include "clustering_bounds_comparator.hh"
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#include "sstables/mc/types.hh"
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namespace sstables {
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class random_access_reader;
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// Utilities for reading integral values in variable-length format
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// See vint-serialization.hh for more details
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future<uint64_t> read_unsigned_vint(random_access_reader& in);
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future<int64_t> read_signed_vint(random_access_reader& in);
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template <typename T>
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typename std::enable_if_t<!std::is_integral_v<T>>
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read_vint(random_access_reader& in, T& t) = delete;
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template <typename T>
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inline future<> read_vint(random_access_reader& in, T& value) {
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static_assert(std::is_integral_v<T>, "Non-integral values can't be read using read_vint");
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if constexpr(std::is_unsigned_v<T>) {
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return read_unsigned_vint(in).then([&value] (uint64_t res) {
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value = res;
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});
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} else {
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return read_signed_vint(in).then([&value] (int64_t res) {
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value = res;
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});
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}
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}
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inline api::timestamp_type parse_timestamp(const serialization_header& header,
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uint64_t delta) {
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return static_cast<api::timestamp_type>(header.get_min_timestamp() + delta);
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}
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inline gc_clock::duration parse_ttl(int64_t value) {
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if (!is_expired_liveness_ttl(value)) {
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if (value < 0) {
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throw malformed_sstable_exception(format("Negative ttl: {}", value));
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}
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if (value > max_ttl.count()) {
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throw malformed_sstable_exception(format("Too big ttl: {}", value));
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}
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}
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return gc_clock::duration(value);
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}
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inline gc_clock::duration parse_ttl(const serialization_header& header,
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uint64_t delta) {
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// sign-extend min_ttl back to 64 bits and
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// add the delta using unsigned arithmetic
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// to prevent signed integer overflow
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uint64_t min_ttl = static_cast<uint64_t>(header.get_min_ttl());
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return parse_ttl(static_cast<int64_t>(min_ttl + delta));
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}
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inline gc_clock::time_point parse_expiry(int64_t value) {
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return gc_clock::time_point(gc_clock::duration(value));
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}
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inline gc_clock::time_point parse_expiry(const serialization_header& header,
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uint64_t delta) {
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// sign-extend min_local_deletion_time back to 64 bits and
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// add the delta using unsigned arithmetic
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// to prevent signed integer overflow
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uint64_t min_local_deletion_time = static_cast<uint64_t>(header.get_min_local_deletion_time());
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return parse_expiry(static_cast<int64_t>(min_local_deletion_time + delta));
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}
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}; // namespace sstables
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inline std::ostream& operator<<(std::ostream& out, sstables::bound_kind_m kind) {
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switch (kind) {
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case sstables::bound_kind_m::excl_end:
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out << "excl_end";
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break;
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case sstables::bound_kind_m::incl_start:
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out << "incl_start";
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break;
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case sstables::bound_kind_m::excl_end_incl_start:
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out << "excl_end_incl_start";
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break;
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case sstables::bound_kind_m::static_clustering:
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out << "static_clustering";
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break;
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case sstables::bound_kind_m::clustering:
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out << "clustering";
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break;
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case sstables::bound_kind_m::incl_end_excl_start:
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out << "incl_end_excl_start";
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break;
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case sstables::bound_kind_m::incl_end:
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out << "incl_end";
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break;
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case sstables::bound_kind_m::excl_start:
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out << "excl_start";
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break;
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default:
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out << static_cast<std::underlying_type_t<sstables::bound_kind_m>>(kind);
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}
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return out;
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}
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