75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
|
|
* Copyright (C) 2015 ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* This file is part of Scylla.
|
|
*
|
|
* Scylla is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Scylla is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
|
|
#include "UUID.hh"
|
|
#include "net/byteorder.hh"
|
|
#include <random>
|
|
#include <boost/iterator/function_input_iterator.hpp>
|
|
#include <boost/algorithm/string.hpp>
|
|
#include <string>
|
|
#include "core/sstring.hh"
|
|
#include "utils/serialization.hh"
|
|
#include "marshal_exception.hh"
|
|
|
|
namespace utils {
|
|
|
|
UUID
|
|
make_random_uuid() {
|
|
// FIXME: keep in userspace
|
|
static thread_local std::random_device urandom;
|
|
static thread_local std::uniform_int_distribution<uint8_t> dist(0, 255);
|
|
union {
|
|
uint8_t b[16];
|
|
struct {
|
|
uint64_t msb, lsb;
|
|
} w;
|
|
} v;
|
|
for (auto& b : v.b) {
|
|
b = dist(urandom);
|
|
}
|
|
v.b[6] &= 0x0f;
|
|
v.b[6] |= 0x40; // version 4
|
|
v.b[8] &= 0x3f;
|
|
v.b[8] |= 0x80; // IETF variant
|
|
return UUID(net::hton(v.w.msb), net::hton(v.w.lsb));
|
|
}
|
|
|
|
std::ostream& operator<<(std::ostream& out, const UUID& uuid) {
|
|
return out << uuid.to_sstring();
|
|
}
|
|
|
|
UUID::UUID(sstring_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();
|
|
}
|
|
sstring most = sstring(uuid_string.begin(), uuid_string.begin() + size);
|
|
sstring least = sstring(uuid_string.begin() + size, uuid_string.end());
|
|
int base = 16;
|
|
this->most_sig_bits = std::stoull(most, nullptr, base);
|
|
this->least_sig_bits = std::stoull(least, nullptr, base);
|
|
}
|
|
|
|
}
|