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SnowFlake-IdGenerator/Python/source/options.py
2022-08-24 21:42:26 +08:00

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"""
生成器IdGenerator配置选项
"""
# !/usr/bin/python
# coding=UTF-8
class IdGeneratorOptions:
"""
ID生成器配置
- worker_id 全局唯一id, 区分不同uuid生成器实例
- worker_id_bit_length 生成的uuid中worker_id占用的位数
- seq_bit_length 生成的uuid中序列号占用的位数
"""
def __init__(self, worker_id=0, worker_id_bit_length=6, seq_bit_length=6):
# 雪花计算方法,1-漂移算法|2-传统算法), 默认1。目前只实现了1。
self.method = 1
# 基础时间ms单位, 不能超过当前系统时间
self.base_time = 1288834974657
# 机器码, 必须由外部设定, 最大值 2^worker_id_bit_length-1
self.worker_id = worker_id
# 机器码位长, 默认值6, 取值范围 [1, 15](要求:序列数位长+机器码位长不超过22
self.worker_id_bit_length = worker_id_bit_length
# 序列数位长, 默认值6, 取值范围 [3, 21](要求:序列数位长+机器码位长不超过22
self.seq_bit_length = seq_bit_length
# 最大序列数(含), 设置范围 [max_seq_number, 2^seq_bit_length-1]
# 默认值0, 表示最大序列数取最大值2^seq_bit_length-1]
self.max_seq_number = 0
# 最小序列数(含), 默认值5, 取值范围 [5, max_seq_number], 每毫秒的前5个序列数对应编号0-4是保留位
# 其中1-4是时间回拨相应预留位, 0是手工新值预留位
self.min_seq_number = 5
# 最大漂移次数(含), 默认2000, 推荐范围500-10000与计算能力有关
self.top_over_cost_count = 2000