uuid.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
 
#pragma once
 
#include <array>
#include <cstdint>
#include <span>
#include <string_view>
 
#include "iceberg/iceberg_export.h"
#include "iceberg/result.h"
#include "iceberg/util/formattable.h"
 
 
namespace iceberg {
 
class ICEBERG_EXPORT Uuid : public util::Formattable {
 public:
  Uuid() = delete;
  constexpr static size_t kLength = 16;
 
  explicit Uuid(std::array<uint8_t, kLength> data);
 
  static Uuid GenerateV4();
 
  static Uuid GenerateV7();
 
  static Uuid GenerateV7(uint64_t unix_ts_ms);
 
  static Result<Uuid> FromString(std::string_view str);
 
  static Result<Uuid> FromBytes(std::span<const uint8_t> bytes);
 
  std::span<const uint8_t> bytes() const { return data_; }
 
  uint8_t operator[](size_t index) const;
 
  std::string ToString() const override;
 
  friend bool operator==(const Uuid& lhs, const Uuid& rhs) {
    return lhs.data_ == rhs.data_;
  }
 
  int64_t high_bits() const;
  int64_t low_bits() const;
 
 private:
  std::array<uint8_t, kLength> data_;
};
 
}  // namespace iceberg