/**
 * 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.
 */

import { hostname } from 'node:os';

/**
 * Client Identifier Helper
 * https://github.com/apache/rocketmq-clients/blob/master/docs/design.md#client-identifier
 */
export class ClientId {
  static #hostname = hostname();
  static #index = BigInt(0);

  static create() {
    return `${this.#hostname}@${process.pid}@${this.#index++}@${Date.now().toString(36)}`;
  }
}