zhengchen.tao/ezbookkeeping
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code refactor

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This commit is contained in:
MaysWind
2020-12-23 01:24:44 +08:00
parent 62ef7cbcbe
commit b3962e8af9
35 changed files with 256 additions and 255 deletions
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pkg/requestid/default_request_id_generator.go
+19 -19
View File
@@ -19,15 +19,15 @@ import (
// Length and mask of all information in request id
const (
REQUEST_ID_LENGTH = 36
SECONDS_TODAY_BITS = 17
SECONDS_TODAY_BITS_MASK = (1 << SECONDS_TODAY_BITS) - 1
RANDOM_NUMBER_BITS = 15
RANDOM_NUMBER_BITS_MASK = (1 << RANDOM_NUMBER_BITS) - 1
REQ_SEQ_NUMBER_BITS = 31
REQ_SEQ_NUMBER_BITS_MASK = (1 << REQ_SEQ_NUMBER_BITS) - 1
CLIENT_IPV6_BIT = 1
CLIENT_IPV6_BIT_MASK = 1
requestIdLength = 36
secondsTodayBits = 17
secondsTodayBitsMask = (1 << secondsTodayBits) - 1
randomNumberBits = 15
randomNumberBitsMask = (1 << randomNumberBits) - 1
reqSeqNumberBits = 31
reqSeqNumberBitsMask = (1 << reqSeqNumberBits) - 1
clientIpv6Bit = 1
clientIpv6BitMask = 1
)
// RequestIdInfo represents a struct which has all information in request id
@@ -102,7 +102,7 @@ func getInstanceUniqId(config *settings.Config) uint16 {
// ParseRequestIdInfo returns a info struct which contains all information in request id
func (r *DefaultRequestIdGenerator) ParseRequestIdInfo(requestId string) (*RequestIdInfo, error) {
if requestId == "" || len(requestId) != REQUEST_ID_LENGTH {
if requestId == "" || len(requestId) != requestIdLength {
return nil, errs.ErrRequestIdInvalid
}
@@ -147,17 +147,17 @@ func (r *DefaultRequestIdGenerator) getRequestId(serverUniqId uint16, instanceUn
// 128bits = serverUniqId(16bits) + instanceUniqId(16bits) + secondsElapsedToday(17bits) + randomNumber(15bits) + sequentialNumber(31bits) + clientIpv6Flag(1bit) + clientIp(32bits)
secondsElapsedToday := r.getSecondsElapsedToday()
secondsLow17bits := uint32(secondsElapsedToday & SECONDS_TODAY_BITS_MASK)
secondsLow17bits := uint32(secondsElapsedToday & secondsTodayBitsMask)
randomNumber, _ := utils.GetRandomInteger(math.MaxInt16)
randomNumberLow15bits := uint32(randomNumber & RANDOM_NUMBER_BITS_MASK)
randomNumberLow15bits := uint32(randomNumber & randomNumberBitsMask)
secondsAndRandomNumber := (secondsLow17bits << RANDOM_NUMBER_BITS) | randomNumberLow15bits
secondsAndRandomNumber := (secondsLow17bits << randomNumberBits) | randomNumberLow15bits
seqId := atomic.AddUint32(&r.requestSeqId, 1)
seqIdLow31bits := seqId & REQ_SEQ_NUMBER_BITS_MASK
seqIdLow31bits := seqId & reqSeqNumberBitsMask
seqIdAndClientIpv6Flag := (seqIdLow31bits << CLIENT_IPV6_BIT) | (clientIpv6Flag & CLIENT_IPV6_BIT_MASK)
seqIdAndClientIpv6Flag := (seqIdLow31bits << clientIpv6Bit) | (clientIpv6Flag & clientIpv6BitMask)
buf := &bytes.Buffer{}
_ = binary.Write(buf, binary.BigEndian, serverUniqId)
@@ -208,11 +208,11 @@ func (r *DefaultRequestIdGenerator) parseRequestIdInfo(data []byte) *RequestIdIn
_ = binary.Read(buf, binary.BigEndian, &seqIdAndClientIpv6Flag)
_ = binary.Read(buf, binary.BigEndian, &clientIp)
secondsElapsedToday := (secondsAndRandomNumber >> RANDOM_NUMBER_BITS) & SECONDS_TODAY_BITS_MASK
randomNumber := (secondsAndRandomNumber & RANDOM_NUMBER_BITS_MASK)
secondsElapsedToday := (secondsAndRandomNumber >> randomNumberBits) & secondsTodayBitsMask
randomNumber := (secondsAndRandomNumber & randomNumberBitsMask)
seqId := (seqIdAndClientIpv6Flag >> CLIENT_IPV6_BIT) & REQ_SEQ_NUMBER_BITS_MASK
isClientIpv6Flag := (seqIdAndClientIpv6Flag & CLIENT_IPV6_BIT_MASK)
seqId := (seqIdAndClientIpv6Flag >> clientIpv6Bit) & reqSeqNumberBitsMask
isClientIpv6Flag := (seqIdAndClientIpv6Flag & clientIpv6BitMask)
isClientIpv6 := false
if isClientIpv6Flag == 1 {