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@@ -0,0 +1,83 @@
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package idgen
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import (
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"strconv"
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"time"
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)
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type DefaultIdGenerator struct {
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Options *IdGeneratorOptions
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SnowWorker ISnowWorker
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IdGeneratorException IdGeneratorException
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}
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func NewDefaultIdGenerator(options *IdGeneratorOptions) *DefaultIdGenerator {
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if options == nil {
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panic("dig.Options error.")
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}
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// 1.BaseTime
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minTime := int64(631123200000) // time.Now().AddDate(-30, 0, 0).UnixNano() / 1e6
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if options.BaseTime < minTime || options.BaseTime > time.Now().UnixNano()/1e6 {
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panic("BaseTime error.")
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}
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// 2.WorkerIdBitLength
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if options.WorkerIdBitLength <= 0 {
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panic("WorkerIdBitLength error.(range:[1, 21])")
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}
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if options.WorkerIdBitLength+options.SeqBitLength > 22 {
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panic("error:WorkerIdBitLength + SeqBitLength <= 22")
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}
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// 3.WorkerId
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maxWorkerIdNumber := uint16(1<<options.WorkerIdBitLength) - 1
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if maxWorkerIdNumber == 0 {
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maxWorkerIdNumber = 63
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}
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if options.WorkerId < 0 || options.WorkerId > maxWorkerIdNumber {
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panic("WorkerId error. (range:[0, " + strconv.FormatUint(uint64(maxWorkerIdNumber), 10) + "]")
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}
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// 4.SeqBitLength
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if options.SeqBitLength < 2 || options.SeqBitLength > 21 {
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panic("SeqBitLength error. (range:[2, 21])")
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}
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// 5.MaxSeqNumber
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maxSeqNumber := uint32(1<<options.SeqBitLength) - 1
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if maxSeqNumber == 0 {
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maxSeqNumber = 63
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}
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if options.MaxSeqNumber < 0 || options.MaxSeqNumber > maxSeqNumber {
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panic("MaxSeqNumber error. (range:[1, " + strconv.FormatUint(uint64(maxSeqNumber), 10) + "]")
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}
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// 6.MinSeqNumber
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if options.MinSeqNumber < 5 || options.MinSeqNumber > maxSeqNumber {
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panic("MinSeqNumber error. (range:[5, " + strconv.FormatUint(uint64(maxSeqNumber), 10) + "]")
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}
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var snowWorker ISnowWorker
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switch options.Method {
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case 1:
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snowWorker = NewSnowWorkerM1(options)
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case 2:
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snowWorker = NewSnowWorkerM2(options)
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default:
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snowWorker = NewSnowWorkerM1(options)
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}
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if options.Method == 1 {
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time.Sleep(time.Duration(500) * time.Microsecond)
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}
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return &DefaultIdGenerator{
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Options: options,
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SnowWorker: snowWorker,
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}
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}
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func (dig DefaultIdGenerator) NewLong() int64 {
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return dig.SnowWorker.NextId()
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}
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@@ -0,0 +1,5 @@
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package idgen
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type IIdGenerator interface {
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NewLong() uint64
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}
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@@ -0,0 +1,5 @@
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package idgen
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type ISnowWorker interface {
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NextId() int64
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}
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@@ -0,0 +1,12 @@
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package idgen
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import "fmt"
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type IdGeneratorException struct {
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message string
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error error
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}
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func (e IdGeneratorException) IdGeneratorException(message ...interface{}) {
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fmt.Println(message)
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}
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@@ -0,0 +1,25 @@
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package idgen
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type IdGeneratorOptions struct {
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Method uint16 // 雪花计算方法,(1-漂移算法|2-传统算法),默认1
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BaseTime int64 // 基础时间(ms单位),不能超过当前系统时间
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WorkerId uint16 // 机器码,必须由外部设定,最大值 2^WorkerIdBitLength-1
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WorkerIdBitLength byte // 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)
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SeqBitLength byte // 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)
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MaxSeqNumber uint32 // 最大序列数(含),设置范围 [MinSeqNumber, 2^SeqBitLength-1],默认值0,表示最大序列数取最大值(2^SeqBitLength-1])
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MinSeqNumber uint32 // 最小序列数(含),默认值5,取值范围 [5, MaxSeqNumber],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
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TopOverCostCount uint32 // 最大漂移次数(含),默认2000,推荐范围500-10000(与计算能力有关)
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}
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func NewIdGeneratorOptions(workerId uint16) *IdGeneratorOptions {
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return &IdGeneratorOptions{
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Method: 1,
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WorkerId: workerId,
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BaseTime: 1582136402000,
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WorkerIdBitLength: 6,
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SeqBitLength: 6,
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MaxSeqNumber: 0,
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MinSeqNumber: 5,
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TopOverCostCount: 2000,
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}
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}
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@@ -0,0 +1,19 @@
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package idgen
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type OverCostActionArg struct {
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ActionType int32
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TimeTick int64
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WorkerId uint16
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OverCostCountInOneTerm int32
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GenCountInOneTerm int32
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TermIndex int32
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}
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func (ocaa OverCostActionArg) OverCostActionArg(workerId uint16, timeTick int64, actionType int32, overCostCountInOneTerm int32, genCountWhenOverCost int32, index int32) {
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ocaa.ActionType = actionType
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ocaa.TimeTick = timeTick
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ocaa.WorkerId = workerId
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ocaa.OverCostCountInOneTerm = overCostCountInOneTerm
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ocaa.GenCountInOneTerm = genCountWhenOverCost
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ocaa.TermIndex = index
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}
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@@ -0,0 +1,243 @@
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package idgen
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import (
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"sync"
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"time"
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)
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// SnowWorkerM1 .
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type SnowWorkerM1 struct {
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BaseTime int64 //基础时间
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WorkerId uint16 //机器码
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WorkerIdBitLength byte //机器码位长
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SeqBitLength byte //自增序列数位长
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MaxSeqNumber uint32 //最大序列数(含)
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MinSeqNumber uint32 //最小序列数(含)
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TopOverCostCount uint32 //最大漂移次数
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_TimestampShift byte
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_CurrentSeqNumber uint32
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_LastTimeTick int64
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_TurnBackTimeTick int64
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_TurnBackIndex byte
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_IsOverCost bool
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_OverCostCountInOneTerm uint32
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_GenCountInOneTerm uint32
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_TermIndex uint32
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sync.Mutex
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}
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// NewSnowWorkerM1 .
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func NewSnowWorkerM1(options *IdGeneratorOptions) ISnowWorker {
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var workerIdBitLength byte
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var seqBitLength byte
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var maxSeqNumber uint32
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// 1.BaseTime
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var baseTime int64
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if options.BaseTime != 0 {
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baseTime = options.BaseTime
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} else {
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baseTime = 1582136402000
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}
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// 2.WorkerIdBitLength
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if options.WorkerIdBitLength == 0 {
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workerIdBitLength = 6
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} else {
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workerIdBitLength = options.WorkerIdBitLength
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}
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// 3.WorkerId
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var workerId = options.WorkerId
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// 4.SeqBitLength
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if options.SeqBitLength == 0 {
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seqBitLength = 6
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} else {
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seqBitLength = options.SeqBitLength
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}
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// 5.MaxSeqNumber
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if options.MaxSeqNumber <= 0 {
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maxSeqNumber = (1 << seqBitLength) - 1
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} else {
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maxSeqNumber = options.MaxSeqNumber
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}
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// 6.MinSeqNumber
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var minSeqNumber = options.MinSeqNumber
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// 7.Others
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var topOverCostCount = options.TopOverCostCount
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if topOverCostCount == 0 {
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topOverCostCount = 2000
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}
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timestampShift := (byte)(workerIdBitLength + seqBitLength)
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currentSeqNumber := minSeqNumber
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return &SnowWorkerM1{
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BaseTime: baseTime,
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WorkerIdBitLength: workerIdBitLength,
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WorkerId: workerId,
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SeqBitLength: seqBitLength,
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MaxSeqNumber: maxSeqNumber,
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MinSeqNumber: minSeqNumber,
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TopOverCostCount: topOverCostCount,
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_TimestampShift: timestampShift,
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_CurrentSeqNumber: currentSeqNumber,
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_LastTimeTick: 0,
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_TurnBackTimeTick: 0,
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_TurnBackIndex: 0,
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_IsOverCost: false,
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_OverCostCountInOneTerm: 0,
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_GenCountInOneTerm: 0,
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_TermIndex: 0,
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}
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}
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// DoGenIDAction .
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func (m1 *SnowWorkerM1) DoGenIdAction(arg *OverCostActionArg) {
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}
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func (m1 *SnowWorkerM1) BeginOverCostAction(useTimeTick int64) {
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}
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func (m1 *SnowWorkerM1) EndOverCostAction(useTimeTick int64) {
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if m1._TermIndex > 10000 {
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m1._TermIndex = 0
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}
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}
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func (m1 *SnowWorkerM1) BeginTurnBackAction(useTimeTick int64) {
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}
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func (m1 *SnowWorkerM1) EndTurnBackAction(useTimeTick int64) {
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}
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func (m1 *SnowWorkerM1) NextOverCostId() int64 {
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currentTimeTick := m1.GetCurrentTimeTick()
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if currentTimeTick > m1._LastTimeTick {
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m1.EndOverCostAction(currentTimeTick)
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m1._LastTimeTick = currentTimeTick
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m1._CurrentSeqNumber = m1.MinSeqNumber
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m1._IsOverCost = false
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m1._OverCostCountInOneTerm = 0
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m1._GenCountInOneTerm = 0
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return m1.CalcId(m1._LastTimeTick)
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}
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if m1._OverCostCountInOneTerm >= m1.TopOverCostCount {
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m1.EndOverCostAction(currentTimeTick)
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m1._LastTimeTick = m1.GetNextTimeTick()
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m1._CurrentSeqNumber = m1.MinSeqNumber
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m1._IsOverCost = false
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m1._OverCostCountInOneTerm = 0
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m1._GenCountInOneTerm = 0
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return m1.CalcId(m1._LastTimeTick)
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}
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if m1._CurrentSeqNumber > m1.MaxSeqNumber {
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m1._LastTimeTick++
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m1._CurrentSeqNumber = m1.MinSeqNumber
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m1._IsOverCost = true
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m1._OverCostCountInOneTerm++
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m1._GenCountInOneTerm++
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return m1.CalcId(m1._LastTimeTick)
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}
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m1._GenCountInOneTerm++
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return m1.CalcId(m1._LastTimeTick)
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}
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// NextNormalID .
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func (m1 *SnowWorkerM1) NextNormalId() int64 {
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currentTimeTick := m1.GetCurrentTimeTick()
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if currentTimeTick < m1._LastTimeTick {
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if m1._TurnBackTimeTick < 1 {
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m1._TurnBackTimeTick = m1._LastTimeTick - 1
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m1._TurnBackIndex++
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// 每毫秒序列数的前5位是预留位,0用于手工新值,1-4是时间回拨次序
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// 最多4次回拨(防止回拨重叠)
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if m1._TurnBackIndex > 4 {
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m1._TurnBackIndex = 1
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}
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m1.BeginTurnBackAction(m1._TurnBackTimeTick)
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}
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// time.Sleep(time.Duration(1) * time.Millisecond)
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return m1.CalcTurnBackId(m1._TurnBackTimeTick)
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}
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// 时间追平时,_TurnBackTimeTick清零
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if m1._TurnBackTimeTick > 0 {
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m1.EndTurnBackAction(m1._TurnBackTimeTick)
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m1._TurnBackTimeTick = 0
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}
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if currentTimeTick > m1._LastTimeTick {
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m1._LastTimeTick = currentTimeTick
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m1._CurrentSeqNumber = m1.MinSeqNumber
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return m1.CalcId(m1._LastTimeTick)
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}
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if m1._CurrentSeqNumber > m1.MaxSeqNumber {
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m1.BeginOverCostAction(currentTimeTick)
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m1._TermIndex++
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m1._LastTimeTick++
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m1._CurrentSeqNumber = m1.MinSeqNumber
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m1._IsOverCost = true
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m1._OverCostCountInOneTerm = 1
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m1._GenCountInOneTerm = 1
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return m1.CalcId(m1._LastTimeTick)
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}
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return m1.CalcId(m1._LastTimeTick)
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}
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// CalcID .
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func (m1 *SnowWorkerM1) CalcId(useTimeTick int64) int64 {
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result := int64(useTimeTick<<m1._TimestampShift) + int64(m1.WorkerId<<m1.SeqBitLength) + int64(m1._CurrentSeqNumber)
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m1._CurrentSeqNumber++
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return result
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}
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// CalcTurnBackID .
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func (m1 *SnowWorkerM1) CalcTurnBackId(useTimeTick int64) int64 {
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result := int64(useTimeTick<<m1._TimestampShift) + int64(m1.WorkerId<<m1.SeqBitLength) + int64(m1._TurnBackIndex)
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m1._TurnBackTimeTick--
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return result
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}
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// GetCurrentTimeTick .
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func (m1 *SnowWorkerM1) GetCurrentTimeTick() int64 {
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var millis = time.Now().UnixNano() / 1e6
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return millis - m1.BaseTime
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}
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// GetNextTimeTick .
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func (m1 *SnowWorkerM1) GetNextTimeTick() int64 {
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tempTimeTicker := m1.GetCurrentTimeTick()
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for tempTimeTicker <= m1._LastTimeTick {
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tempTimeTicker = m1.GetCurrentTimeTick()
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}
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return tempTimeTicker
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}
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// NextId .
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func (m1 *SnowWorkerM1) NextId() int64 {
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m1.Lock()
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defer m1.Unlock()
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if m1._IsOverCost {
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return m1.NextOverCostId()
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} else {
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return m1.NextNormalId()
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}
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}
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@@ -0,0 +1,37 @@
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package idgen
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import (
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"fmt"
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"strconv"
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)
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type SnowWorkerM2 struct {
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*SnowWorkerM1
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}
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func NewSnowWorkerM2(options *IdGeneratorOptions) ISnowWorker {
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return &SnowWorkerM2{
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NewSnowWorkerM1(options).(*SnowWorkerM1),
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}
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}
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func (m2 SnowWorkerM2) NextId() int64 {
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m2.Lock()
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defer m2.Unlock()
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currentTimeTick := m2.GetCurrentTimeTick()
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if m2._LastTimeTick == currentTimeTick {
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m2._CurrentSeqNumber++
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if m2._CurrentSeqNumber > m2.MaxSeqNumber {
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m2._CurrentSeqNumber = m2.MinSeqNumber
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currentTimeTick = m2.GetNextTimeTick()
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}
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} else {
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m2._CurrentSeqNumber = m2.MinSeqNumber
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}
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if currentTimeTick < m2._LastTimeTick {
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fmt.Println("Time error for {0} milliseconds", strconv.FormatInt(m2._LastTimeTick-currentTimeTick, 10))
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}
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m2._LastTimeTick = currentTimeTick
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result := int64(currentTimeTick<<m2._TimestampShift) + int64(m2.WorkerId<<m2.SeqBitLength) + int64(m2._CurrentSeqNumber)
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return result
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}
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@@ -0,0 +1,29 @@
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package idgen
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|
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import (
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"sync"
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||||
)
|
||||
|
||||
var singletonMutex sync.Mutex
|
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var idGenerator *DefaultIdGenerator
|
||||
|
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// SetIdGenerator .
|
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func SetIdGenerator(options *IdGeneratorOptions) {
|
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singletonMutex.Lock()
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idGenerator = NewDefaultIdGenerator(options)
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singletonMutex.Unlock()
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}
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// NextId .
|
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func NextId() int64 {
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if idGenerator == nil {
|
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singletonMutex.Lock()
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defer singletonMutex.Unlock()
|
||||
if idGenerator == nil {
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||||
options := NewIdGeneratorOptions(1)
|
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idGenerator = NewDefaultIdGenerator(options)
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||||
}
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}
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return idGenerator.NewLong()
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}
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@@ -9,7 +9,7 @@ import (
|
||||
|
||||
// CustomClaims 自定义 payload,可扩展其他信息
|
||||
type CustomClaims struct {
|
||||
UserID int `json:"user_id"` // 改为 int
|
||||
UserID int64 `json:"user_id"` // 改为 int
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||||
jwt.RegisteredClaims
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}
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||||
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||||
@@ -21,17 +21,17 @@ type TokenResult struct {
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||||
}
|
||||
|
||||
// CreateAccessToken 创建 Access Token,只返回 token 和 error
|
||||
func CreateAccessToken(userID int) (string, error) {
|
||||
func CreateAccessToken(userID int64) (string, error) {
|
||||
return createToken(userID, config.App.JWT.AccessExpiry)
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||||
}
|
||||
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||||
// CreateRefreshToken 创建 Refresh Token,只返回 token 和 error
|
||||
func CreateRefreshToken(userID int) (string, error) {
|
||||
func CreateRefreshToken(userID int64) (string, error) {
|
||||
return createToken(userID, config.App.JWT.RefreshExpiry)
|
||||
}
|
||||
|
||||
// 内部方法,根据过期时间生成 token
|
||||
func createToken(userID int, expiry time.Duration) (string, error) {
|
||||
func createToken(userID int64, expiry time.Duration) (string, error) {
|
||||
claims := &CustomClaims{
|
||||
UserID: userID,
|
||||
RegisteredClaims: jwt.RegisteredClaims{
|
||||
|
||||
@@ -13,6 +13,10 @@ func New() M {
|
||||
return M{}
|
||||
}
|
||||
|
||||
func NewArr() {
|
||||
//return make([]M, 0, len())
|
||||
}
|
||||
|
||||
// Set 设置单个键值,支持链式调用
|
||||
func (m M) Set(key string, value interface{}) M {
|
||||
m[key] = value
|
||||
@@ -78,33 +82,68 @@ func (m M) GetString(key string) string {
|
||||
return ""
|
||||
}
|
||||
|
||||
// GetInt 获取整数类型
|
||||
func (m M) GetInt(key string) int {
|
||||
if v, ok := m[key]; ok {
|
||||
// 核心获取整数的方法,返回 int64
|
||||
func (m M) getIntValue(key string) int64 {
|
||||
if v, ok := m[key]; ok && v != nil {
|
||||
switch val := v.(type) {
|
||||
case int:
|
||||
return val
|
||||
return int64(val)
|
||||
case int8:
|
||||
return int(val)
|
||||
return int64(val)
|
||||
case int16:
|
||||
return int(val)
|
||||
return int64(val)
|
||||
case int32:
|
||||
return int(val)
|
||||
return int64(val)
|
||||
case int64:
|
||||
return int(val)
|
||||
return val
|
||||
case uint:
|
||||
return int64(val)
|
||||
case uint8:
|
||||
return int64(val)
|
||||
case uint16:
|
||||
return int64(val)
|
||||
case uint32:
|
||||
return int64(val)
|
||||
case uint64:
|
||||
return int64(val) // 注意溢出
|
||||
case float32:
|
||||
return int(val)
|
||||
return int64(val)
|
||||
case float64:
|
||||
return int(val)
|
||||
return int64(val)
|
||||
case string:
|
||||
if i, err := strconv.ParseInt(val, 10, 64); err == nil {
|
||||
return int(i)
|
||||
return i
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
// GetInt 返回默认 int 类型
|
||||
func (m M) GetInt(key string) int {
|
||||
return int(m.getIntValue(key))
|
||||
}
|
||||
|
||||
// GetInt64 返回 int64
|
||||
func (m M) GetInt64(key string) int64 {
|
||||
return m.getIntValue(key)
|
||||
}
|
||||
|
||||
// GetInt32 返回 int32
|
||||
func (m M) GetInt32(key string) int32 {
|
||||
return int32(m.getIntValue(key))
|
||||
}
|
||||
|
||||
// GetInt16 返回 int16
|
||||
func (m M) GetInt16(key string) int16 {
|
||||
return int16(m.getIntValue(key))
|
||||
}
|
||||
|
||||
// GetInt8 返回 int8
|
||||
func (m M) GetInt8(key string) int8 {
|
||||
return int8(m.getIntValue(key))
|
||||
}
|
||||
|
||||
// Merge 合并另一个 M,后者会覆盖前者同名字段
|
||||
func (m M) Merge(other M) M {
|
||||
for k, v := range other {
|
||||
|
||||
@@ -1,90 +0,0 @@
|
||||
package uid
|
||||
|
||||
import (
|
||||
"base-go-v2/internal/config"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
datacenterBits = uint64(5)
|
||||
workerBits = uint64(5)
|
||||
sequenceBits = uint64(12)
|
||||
|
||||
maxSequence = -1 ^ (-1 << sequenceBits)
|
||||
workerShift = sequenceBits
|
||||
datacenterShift = sequenceBits + workerBits
|
||||
timestampShift = sequenceBits + workerBits + datacenterBits
|
||||
|
||||
epoch = int64(1672531200000) // 2023-01-01
|
||||
)
|
||||
|
||||
type Snowflake struct {
|
||||
lastStamp uint64 // 上一次时间戳 (毫秒)
|
||||
sequence uint64 // 序列号
|
||||
dcID uint64
|
||||
workerID uint64
|
||||
}
|
||||
|
||||
var (
|
||||
sfInstance *Snowflake
|
||||
once sync.Once
|
||||
)
|
||||
|
||||
// lazy 初始化实例
|
||||
func initInstance() {
|
||||
var dcID, wID uint64
|
||||
|
||||
dcID = config.App.Snowflake.DatacenterID
|
||||
wID = config.App.Snowflake.WorkerID
|
||||
|
||||
sfInstance = &Snowflake{
|
||||
dcID: dcID,
|
||||
workerID: wID,
|
||||
}
|
||||
}
|
||||
|
||||
// NextID 生成全局唯一 ID,无锁版本
|
||||
func NextID() uint64 {
|
||||
once.Do(initInstance)
|
||||
|
||||
for {
|
||||
now := uint64(time.Now().UnixNano() / 1e6)
|
||||
|
||||
last := atomic.LoadUint64(&sfInstance.lastStamp)
|
||||
seq := atomic.LoadUint64(&sfInstance.sequence)
|
||||
|
||||
if now < last {
|
||||
// 系统时钟回拨,等待
|
||||
now = waitNextMillis(last)
|
||||
}
|
||||
|
||||
if now == last {
|
||||
seq = (seq + 1) & uint64(maxSequence)
|
||||
if seq == 0 {
|
||||
now = waitNextMillis(last)
|
||||
}
|
||||
} else {
|
||||
seq = 0
|
||||
}
|
||||
|
||||
if atomic.CompareAndSwapUint64(&sfInstance.lastStamp, last, now) {
|
||||
atomic.StoreUint64(&sfInstance.sequence, seq)
|
||||
id := ((now - uint64(epoch)) << timestampShift) |
|
||||
(sfInstance.dcID << datacenterShift) |
|
||||
(sfInstance.workerID << workerShift) |
|
||||
seq
|
||||
return id
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 等待下一个毫秒
|
||||
func waitNextMillis(last uint64) uint64 {
|
||||
now := uint64(time.Now().UnixNano() / 1e6)
|
||||
for now <= last {
|
||||
now = uint64(time.Now().UnixNano() / 1e6)
|
||||
}
|
||||
return now
|
||||
}
|
||||
Reference in new issue
Block a user