775b7e41f4
* seastar d59fcef...b924495 (2): > build: Fix protobuf generation rules > Merge "Restructure files" from Jesse Includes fixup patch from Jesse: " Update Seastar `#include`s to reflect restructure All Seastar header files are now prefixed with "seastar" and the configure script reflects the new locations of files. Signed-off-by: Jesse Haber-Kucharsky <jhaberku@scylladb.com> Message-Id: <5d22d964a7735696fb6bb7606ed88f35dde31413.1542731639.git.jhaberku@scylladb.com> "
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/*
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* Copyright (C) 2015 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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#include "UUID.hh"
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#include <seastar/net/byteorder.hh>
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#include <random>
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#include <boost/iterator/function_input_iterator.hpp>
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#include <boost/algorithm/string.hpp>
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#include <string>
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#include <seastar/core/sstring.hh>
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#include "utils/serialization.hh"
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#include "marshal_exception.hh"
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namespace utils {
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UUID
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make_random_uuid() {
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static thread_local std::mt19937_64 engine(std::random_device().operator()());
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static thread_local std::uniform_int_distribution<uint64_t> dist;
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uint64_t msb, lsb;
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msb = dist(engine);
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lsb = dist(engine);
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msb &= ~uint64_t(0x0f << 12);
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msb |= 0x4 << 12; // version 4
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lsb &= ~(uint64_t(0x3) << 62);
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lsb |= uint64_t(0x2) << 62; // IETF variant
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return UUID(msb, lsb);
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}
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std::ostream& operator<<(std::ostream& out, const UUID& uuid) {
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return out << uuid.to_sstring();
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}
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UUID::UUID(sstring_view uuid) {
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sstring uuid_string(uuid.begin(), uuid.end());
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boost::erase_all(uuid_string, "-");
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auto size = uuid_string.size() / 2;
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if (size != 16) {
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throw marshal_exception(format("UUID string size mismatch: '{}'", uuid));
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}
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sstring most = sstring(uuid_string.begin(), uuid_string.begin() + size);
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sstring least = sstring(uuid_string.begin() + size, uuid_string.end());
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int base = 16;
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this->most_sig_bits = std::stoull(most, nullptr, base);
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this->least_sig_bits = std::stoull(least, nullptr, base);
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}
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}
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