76 lines
1.9 KiB
Go
76 lines
1.9 KiB
Go
/*
|
||
* 版权属于：yitter(yitter@126.com)
|
||
* 代码编辑：guoyahao
|
||
* 代码修订：yitter
|
||
* 开源地址：https://gitee.com/yitter/idgenerator
|
||
*/
|
||
package idgen
|
||
|
||
import (
|
||
"time"
|
||
"yitidgen/contract"
|
||
"yitidgen/core"
|
||
)
|
||
|
||
type DefaultIdGenerator struct {
|
||
Options *contract.IdGeneratorOptions
|
||
SnowWorker contract.ISnowWorker
|
||
IdGeneratorException contract.IdGeneratorException
|
||
}
|
||
|
||
func NewDefaultIdGenerator(options *contract.IdGeneratorOptions) *DefaultIdGenerator {
|
||
if options == nil {
|
||
panic("dig.Options error.")
|
||
}
|
||
|
||
minTime := int64(631123200000) // time.Now().AddDate(-30, 0, 0).UnixNano() / 1e6
|
||
if options.BaseTime < minTime || options.BaseTime > time.Now().UnixNano()/1e6 {
|
||
panic("BaseTime error.")
|
||
}
|
||
|
||
if options.SeqBitLength+options.WorkerIdBitLength > 22 {
|
||
panic("error：WorkerIdBitLength + SeqBitLength <= 22")
|
||
}
|
||
|
||
maxWorkerIdNumber := uint16(1<<options.WorkerIdBitLength) - 1
|
||
if options.WorkerId > maxWorkerIdNumber {
|
||
panic("WorkerId error. (range:[1, " + string(maxWorkerIdNumber) + "]")
|
||
}
|
||
|
||
if options.SeqBitLength < 2 || options.SeqBitLength > 21 {
|
||
panic("SeqBitLength error. (range:[2, 21])")
|
||
}
|
||
|
||
maxSeqNumber := uint32(1<<options.SeqBitLength) - 1
|
||
if options.MaxSeqNumber > maxSeqNumber {
|
||
panic("MaxSeqNumber error. (range:[1, " + string(maxSeqNumber) + "]")
|
||
}
|
||
|
||
if options.MinSeqNumber > maxSeqNumber {
|
||
panic("MinSeqNumber error. (range:[1, " + string(maxSeqNumber) + "]")
|
||
}
|
||
|
||
var snowWorker contract.ISnowWorker
|
||
|
||
switch options.Method {
|
||
case 1:
|
||
snowWorker = core.NewSnowWorkerM1(options)
|
||
case 2:
|
||
snowWorker = core.NewSnowWorkerM2(options)
|
||
default:
|
||
snowWorker = core.NewSnowWorkerM1(options)
|
||
}
|
||
|
||
if options.Method == 1 {
|
||
time.Sleep(time.Duration(500) * time.Microsecond)
|
||
}
|
||
return &DefaultIdGenerator{
|
||
Options: options,
|
||
SnowWorker: snowWorker,
|
||
}
|
||
}
|
||
|
||
func (dig DefaultIdGenerator) NewLong() uint64 {
|
||
return dig.SnowWorker.NextId()
|
||
}
|