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//
//
// Copyright 2023 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//
#include <grpc/support/port_platform.h>
#include "src/core/lib/gprpp/uuid_v4.h"
#include <initializer_list>
#include "absl/strings/str_format.h"
namespace grpc_core {
std::string GenerateUUIDv4(uint64_t hi, uint64_t lo) {
uint32_t time_low = hi >> 32;
uint16_t time_mid = hi >> 16;
uint16_t time_hi_and_version = (hi & 0x0fff) | 0x4000;
uint16_t clock_seq_hi_low = ((lo >> 48) & 0x3fff) | 0x8000;
uint64_t node = lo & 0xffffffffffff;
return absl::StrFormat("%08x-%04x-%04x-%04x-%012x", time_low, time_mid,
time_hi_and_version, clock_seq_hi_low, node);
}
} // namespace grpc_core