mirror of
https://github.com/scylladb/scylladb.git
synced 2026-04-25 19:10:42 +00:00
e639434a89
Our "sstring_view" is an historic alias for the standard std::string_view. The patch changes the last remaining random uses of this old alias across our source directory to the standard type name. After this patch, there are no more uses of the "sstring_view" alias. It will be removed in the following patch. Refs #4062. Signed-off-by: Nadav Har'El <nyh@scylladb.com>
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/*
|
|
* Copyright (C) 2015-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: AGPL-3.0-or-later
|
|
*/
|
|
|
|
|
|
#include "UUID.hh"
|
|
#include <seastar/net/byteorder.hh>
|
|
#include <random>
|
|
#include <boost/iterator/function_input_iterator.hpp>
|
|
#include <boost/algorithm/string.hpp>
|
|
#include <string>
|
|
#include <fmt/ostream.h>
|
|
#include <seastar/core/sstring.hh>
|
|
#include "marshal_exception.hh"
|
|
|
|
namespace utils {
|
|
|
|
UUID
|
|
make_random_uuid() noexcept {
|
|
static thread_local std::mt19937_64 engine(std::random_device().operator()());
|
|
static thread_local std::uniform_int_distribution<uint64_t> dist;
|
|
uint64_t msb, lsb;
|
|
msb = dist(engine);
|
|
lsb = dist(engine);
|
|
msb &= ~uint64_t(0x0f << 12);
|
|
msb |= 0x4 << 12; // version 4
|
|
lsb &= ~(uint64_t(0x3) << 62);
|
|
lsb |= uint64_t(0x2) << 62; // IETF variant
|
|
return UUID(msb, lsb);
|
|
}
|
|
|
|
std::ostream& operator<<(std::ostream& out, const UUID& uuid) {
|
|
fmt::print(out, "{}", uuid);
|
|
return out;
|
|
}
|
|
|
|
UUID::UUID(std::string_view uuid) {
|
|
sstring uuid_string(uuid.begin(), uuid.end());
|
|
boost::erase_all(uuid_string, "-");
|
|
auto size = uuid_string.size() / 2;
|
|
if (size != 16) {
|
|
throw marshal_exception(seastar::format("UUID string size mismatch: '{}'", uuid));
|
|
}
|
|
sstring most = sstring(uuid_string.begin(), uuid_string.begin() + size);
|
|
sstring least = sstring(uuid_string.begin() + size, uuid_string.end());
|
|
int base = 16;
|
|
try {
|
|
std::size_t pos = 0;
|
|
this->most_sig_bits = std::stoull(most, &pos, base);
|
|
if (pos != most.size()) {
|
|
throw std::invalid_argument("");
|
|
}
|
|
this->least_sig_bits = std::stoull(least, &pos, base);
|
|
if (pos != least.size()) {
|
|
throw std::invalid_argument("");
|
|
}
|
|
} catch (const std::logic_error&) {
|
|
throw marshal_exception(seastar::format("invalid UUID: '{}'", uuid));
|
|
}
|
|
}
|
|
|
|
uint32_t uuid_xor_to_uint32(const UUID& uuid) {
|
|
size_t h = std::hash<utils::UUID>{}(uuid);
|
|
return uint32_t(h);
|
|
}
|
|
|
|
}
|