未验证 提交 91459b15 编写于 作者: 当代码农's avatar 当代码农 提交者: GitHub

修复_IsOverCost参数错误的问题,解决bigint的问题,增加demo (#18)

* 修改demo程序的一个错误

* 修正demo上一个错误

* 修复_IsOverCost参数错误的问题,解决bigint的问题,增加demo

* 统一输入为bigint类型

* 增加测试demo

* Update README.md
Co-authored-by: Nyitter <80446528+yitter@users.noreply.github.com>
上级 c8ca844c
......@@ -8,10 +8,11 @@ function test1() {
}
}
function test2() {
const genid = new GenId({ WorkerId: 1 })
const id = genid.NextId()
console.log(typeof (id))
console.log(id, id.toString().length)
const genid = new GenId({ WorkerId: 1, SeqBitLength: 14 })
for (let i = 0; i < 10; i++) {
let id1 = genid.NextId()
console.log(`${i} ID:${id1} ${typeof id1} 长度:${id1.toString().length}`)
}
}
function main() {
......
......@@ -6,6 +6,10 @@
代码贡献者:zhupengfei(在 bubao 布宝 的JS基础上改版,感谢bubao 布宝)
js Number 类型最大数值:9007199254740992(16位),
在JS中没有bigint类型,所以建议将ID控制在16位以内,统一使用number类型
执行测试代码
......@@ -22,12 +26,155 @@ import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
const Method = process.env.Method == undefined ? 1 : process.env.Method
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, Method: Method })
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId})
let id1 = gen1.NextId()
console.log(id1, id1.toString().length)
```
## 示例
```js
import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, SeqBitLength: 6 })
for (let i = 0; i < 10; i++) {
let id1 = gen1.NextId()
console.log(`${i} ID:${id1} 长度:${id1.toString().length}`)
}
$ ts-node test/test4.ts
0 ID:234712552579141 长度15
1 ID:234712552587333 长度15
2 ID:234712552587334 长度15
3 ID:234712552587335 长度15
4 ID:234712552587336 长度15
5 ID:234712552591429 长度15
6 ID:234712552591430 长度15
7 ID:234712552591431 长度15
8 ID:234712552591432 长度15
9 ID:234712552591433 长度15
import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, SeqBitLength: 11 })
for (let i = 0; i < 10; i++) {
let id1 = gen1.NextId()
console.log(`${i} ID:${id1} ${typeof id1} 长度:${id1.toString().length}`)
}
$ ts-node test/test4.ts
0 ID:7510958933018629 number 长度16
1 ID:7510958933280773 number 长度16
2 ID:7510958933280774 number 长度16
3 ID:7510958933280775 number 长度16
4 ID:7510958933411845 number 长度16
5 ID:7510958933411846 number 长度16
6 ID:7510958933542917 number 长度16
7 ID:7510958933542918 number 长度16
8 ID:7510958933542919 number 长度16
9 ID:7510958933673989 number 长度16
import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, SeqBitLength: 12 })
for (let i = 0; i < 10; i++) {
let id1 = gen1.NextId()
console.log(`${i} ID:${id1} ${typeof id1} 长度:${id1.toString().length}`)
}
$ ts-node test/test4.ts
0 ID:15021931987734533 bigint 长度17
1 ID:15021931987996677 bigint 长度17
2 ID:15021931987996678 bigint 长度17
3 ID:15021931987996679 bigint 长度17
4 ID:15021931987996680 bigint 长度17
5 ID:15021931988258821 bigint 长度17
6 ID:15021931988258822 bigint 长度17
7 ID:15021931988258823 bigint 长度17
8 ID:15021931988258824 bigint 长度17
9 ID:15021931988520965 bigint 长度17
import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, SeqBitLength: 13 })
for (let i = 0; i < 10; i++) {
let id1 = gen1.NextId()
console.log(`${i} ID:${id1} ${typeof id1} 长度:${id1.toString().length}`)
}
$ ts-node test/test4.ts
0 ID:30043877337997317 bigint 长度17
1 ID:30043877338521605 bigint 长度17
2 ID:30043877338521606 bigint 长度17
3 ID:30043877339045893 bigint 长度17
4 ID:30043877339045894 bigint 长度17
5 ID:30043877339045895 bigint 长度17
6 ID:30043877339045896 bigint 长度17
7 ID:30043877339570181 bigint 长度17
8 ID:30043877339570182 bigint 长度17
9 ID:30043877339570183 bigint 长度17
```
## 同时兼容number和bigint的写法
如果您觉得这个用法更好,可以手动替换对应方法
```js
/**
* 生成ID
* @returns
*/
public NextId(): number | bigint {
if (this._IsOverCost) {
//
let id = this.NextOverCostId()
if (id >= 9007199254740992n)
return id
else
return parseInt(id.toString())
} else {
//
let id = this.NextNormalId()
if (id >= 9007199254740992n)
return id
else
return parseInt(id.toString())
}
}
```
## 其他帮助
在mysql中int类型最大长度是10位数字,由于本算法默认生成的是15位,最短也是11位,所以在mysql中需要使用bigint数据类型
......@@ -328,13 +328,13 @@ export class snowflakeIdv1 {
* 生成ID
* @returns
*/
public NextId(): number {
if (this.Method == BigInt(1)) {
//雪花漂移算法
return parseInt(this.NextOverCostId().toString())
public NextId(): bigint {
if (this._IsOverCost) {
//
return this.NextOverCostId()
} else {
//常规雪花算法
return parseInt(this.NextNormalId().toString())
//
return this.NextNormalId()
}
}
}
......
......@@ -2,8 +2,6 @@ import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
const Method = process.env.Method == undefined ? 1 : process.env.Method
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, Method: Method })
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId })
let id1 = gen1.NextId()
console.log(id1, id1.toString().length)
\ No newline at end of file
console.log(`ID:${id1} 长度:${id1.toString().length}`)
\ No newline at end of file
import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
const Method = process.env.Method == undefined ? 1 : process.env.Method
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, Method: Method })
let id1 = gen1.NextId()
console.log(id1, id1.toString().length)
\ No newline at end of file
import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, SeqBitLength: 10 })
for (let i = 0; i < 10; i++) {
let id1 = gen1.NextId()
console.log(`${i} ID:${id1} ${typeof id1} 长度:${id1.toString().length}`)
}
import { snowflakeIdv1 } from '../snowflakeIdv1'
const WorkerId = process.env.WorkerId == undefined ? 1 : process.env.WorkerId
let gen1 = new snowflakeIdv1({ WorkerId: WorkerId, SeqBitLength: 10 })
// for (let i = 0; i < 10; i++) {
// let id1 = gen1.NextId()
// console.log(`${i} ID:${id1} ${typeof id1} 长度:${id1.toString().length}`)
// }
console.time("Test Run")
const HSet = new Set()
for (let index = 0; index < 500000; index++) {
HSet.add(gen1.NextId())
}
console.timeEnd("Test Run")
console.log([...HSet.values()].join("\n"))
console.log(HSet.size)
\ No newline at end of file
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