改造成了uid-generator-spring-boot-starter

[wujun234]

项目地址 https://github.com/wujun234/uid-generator-spring-boot-starter ，已发布到maven中央仓库。

基于 百度UidGenerator, 做了以下改动：

• 改造为spring-boot-starter的形式，不用部署为分布式，直接建表、在项目中引入，即可使用
• 针对时钟回拨，提供了修正选项（默认启用，可通过配置关闭），小于阈值直接休眠，大于阈值更改机器号
• 对机器id用尽提供了复用策略：取余
• 解除id位数限制，由“必须64位”改为“不大于64位”，可根据需要获取更短id

Quick Start

1 引入maven依赖

<dependency>
    <groupId>com.github.wujun234</groupId>
    <artifactId>uid-generator-spring-boot-starter</artifactId>
    <version>1.0.2.RELEASE</version>
</dependency>

2 建表

DROP TABLE IF EXISTS WORKER_NODE;
CREATE TABLE WORKER_NODE
(
ID BIGINT NOT NULL AUTO_INCREMENT COMMENT 'auto increment id',
HOST_NAME VARCHAR(64) NOT NULL COMMENT 'host name',
PORT VARCHAR(64) NOT NULL COMMENT 'port',
TYPE INT NOT NULL COMMENT 'node type: CONTAINER(1), ACTUAL(2), FAKE(3)',
LAUNCH_DATE DATE NOT NULL COMMENT 'launch date',
MODIFIED TIMESTAMP NOT NULL COMMENT 'modified time',
CREATED TIMESTAMP NOT NULL COMMENT 'created time',
PRIMARY KEY(ID)
)
 COMMENT='DB WorkerID Assigner for UID Generator',ENGINE = INNODB;

3 开始使用

//@Resource
//private UidGenerator defaultUidGenerator;

@Resource
private UidGenerator cachedUidGenerator;

@Test
public void testSerialGenerate() {
    // Generate UID
    long uid = cachedUidGenerator.getUID();

    // Parse UID into [Timestamp, WorkerId, Sequence]
    // {"UID":"450795408770","timestamp":"2019-02-20 14:55:39","workerId":"27","sequence":"2"}
    System.out.println(cachedUidGenerator.parseUID(uid));

}