utils

package
v0.0.0-...-d7cb029 Latest Latest
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 Go to latest Published: Jul 24, 2020 License: MIT Imports: 32 Imported by: 0

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Index

Constants

View Source 
const (
	ReplayString = "string"
	ReplayInt64s = "int64s"
)
View Source 
const (
	GolangSecurityTime = "2006-01-02T15:04:05Z"
	// GolangSecurityTime = "2006-01-02 15:04:05"
	ReaderBufferSize = bytesize.MB * 32
	WriterBufferSize = bytesize.MB * 8

	LogLevelNone  = "none"
	LogLevelError = "error"
	LogLevelWarn  = "warn"
	LogLevelInfo  = "info"
	LogLevelDebug = "debug"

	TencentCluster = "tencent_cluster"
	AliyunCluster  = "aliyun_cluster"
	UCloudCluster  = "ucloud_cluster"
	CodisCluster   = "codis_cluster"

	CoidsErrMsg = "ERR backend server 'server' not found"

	CheckpointKey     = "redis-shake-checkpoint"
	CheckpointOffset  = "offset"
	CheckpointRunId   = "runid"
	CheckpointVersion = "version"
)
View Source 
const (
	KB = 1024
	MB = 1024 * KB
	GB = 1024 * MB
	TB = 1024 * GB
	PB = 1024 * TB
)
View Source 
const (
	AddressSplitter        = "@"
	AddressHeaderSplitter  = ":"
	AddressClusterSplitter = ";"
)

Variables

View Source 
var (
	Version          = "$"
	LogRotater       *logRotate.Logger
	StartTime        string
	TargetRoundRobin int
	RDBVersion       uint = 9 // 9 for 5.0
)
View Source 
var (
	FcvCheckpoint = Checkpoint{
		CurrentVersion:           1,
		FeatureCompatibleVersion: 1,
	}
	FcvConfiguration = Configuration{
		CurrentVersion:           1,
		FeatureCompatibleVersion: 0,
	}

	LowestCheckpointVersion = map[int]string{
		0: "1.0.0",
		1: "2.0.0",
	}
	LowestConfigurationVersion = map[int]string{
		0: "1.0.0",
		1: "2.0.0",
	}
)
View Source 
var ErrNil = errors.New("redigo: nil returned")

ErrNil indicates that a reply value is nil.

View Source 
var (
	HttpApi *nimo.HttpRestProvider
)
View Source 
var (
	RecvChanSize = 4096
)

Functions

func AuthPassword 

func AuthPassword(c net.Conn, authType, passwd string)

func Bool 

func Bool(reply interface{}, err error) (bool, error)

Bool is a helper that converts a command reply to a boolean. If err is not equal to nil, then Bool returns false, err. Otherwise Bool converts the reply to boolean as follows: 

Reply type      Result
integer         value != 0, nil
bulk string     strconv.ParseBool(reply)
nil             false, ErrNil
other           false, error

func Bytes 

func Bytes(reply interface{}, err error) ([]byte, error)

Bytes is a helper that converts a command reply to a slice of bytes. If err is not equal to nil, then Bytes returns nil, err. Otherwise Bytes converts the reply to a slice of bytes as follows: 

Reply type      Result
bulk string     reply, nil
simple string   []byte(reply), nil
nil             nil, ErrNil
other           nil, error

func Bytes2String 

func Bytes2String(b []byte) string

func CheckFcv 

func CheckFcv(file string, fcv int) (int, error)

--------------------------------------------------

func CheckHandleNetError 

func CheckHandleNetError(err error) bool

func CheckSlotDistributionEqual 

func CheckSlotDistributionEqual(src, dst []SlotOwner) bool

func CheckVersionChecksum 

func CheckVersionChecksum(d []byte) (uint, uint64, error)

func ChoseSlotInRange 

func ChoseSlotInRange(prefix string, left, right int) string

chose key(${prefix}-${suffix}) to let it hash in the given slot boundary: [left, right]. return suffix

func CompareUnorderedList 

func CompareUnorderedList(a, b []string) bool

compare two unordered list. return true means equal.

func CompareVersion 

func CompareVersion(a, b string, level int) int

* compare the version with given level. e.g., * 2.0.1, 2.0.3, level = 2 => equal: 0 * 2.0.1, 2.0.3, level = 3 => smaller: 1 * 3.1.1, 2.1 level = 2 => bigger: 2 * 3, 3.2, level = 2 => smaller: 1 * 3.a, 3.2, level = 2 => unknown: 3

func CutRedisInfoSegment 

func CutRedisInfoSegment(content []byte, field string) []byte

cut segment

func Float64 

func Float64(reply interface{}, err error) (float64, error)

Float64 is a helper that converts a command reply to 64 bit float. If err is not equal to nil, then Float64 returns 0, err. Otherwise, Float64 converts the reply to an int as follows: 

Reply type    Result
bulk string   parsed reply, nil
nil           0, ErrNil
other         0, error

func Float64ToByte 

func Float64ToByte(float float64) string

func FlushWriter 

func FlushWriter(w *bufio.Writer)

func GetAllClusterNode 

func GetAllClusterNode(client redigo.Conn, role string, choose string) ([]string, error)

return id list if choose == "id", otherwise address

func GetFakeSlaveOffset 

func GetFakeSlaveOffset(c redigo.Conn) (string, error)

func GetLocalIp 

func GetLocalIp(preferdInterfaces []string) (ip string, interfaceName string, err error)

func GetMetric 

func GetMetric(input int64) string

func GetRDBChecksum 

func GetRDBChecksum(target, authType, auth string, tlsEnable bool) (string, error)

func GetReadableRedisAddressThroughSentinel 

func GetReadableRedisAddressThroughSentinel(sentinelAddrs []string, sentinelMasterName string, fromMaster bool) (string, error)

GetReadableRedisAddressThroughSentinel gets readable redis address First, the function will pick one from available slaves randomly. If there is no available slave, it will pick master.

func GetRedisVersion 

func GetRedisVersion(target, authType, auth string, tlsEnable bool) (string, error)

func GetSlotBoundary 

func GetSlotBoundary(shardList []SlotOwner, address string) (int, int)

return -1, -1 means not found 

func GetTotalLink() int

func GetWritableRedisAddressThroughSentinel 

func GetWritableRedisAddressThroughSentinel(sentinelAddrs []string, sentinelMasterName string) (string, error)

getWritableRedisAddressThroughSentinel gets writable redis address The function will return redis master address.

func Goodbye 

func Goodbye()

func InitHttpApi 

func InitHttpApi(port int)

func Int 

func Int(reply interface{}, err error) (int, error)

Int is a helper that converts a command reply to an integer. If err is not equal to nil, then Int returns 0, err. Otherwise, Int converts the reply to an int as follows: 

Reply type    Result
integer       int(reply), nil
bulk string   parsed reply, nil
nil           0, ErrNil
other         0, error

func Int64 

func Int64(reply interface{}, err error) (int64, error)

Int64 is a helper that converts a command reply to 64 bit integer. If err is not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the reply to an int64 as follows: 

Reply type    Result
integer       reply, nil
bulk string   parsed reply, nil
nil           0, ErrNil
other         0, error

func Iocopy 

func Iocopy(r io.Reader, w io.Writer, p []byte, max int) int

func KeyToSlot 

func KeyToSlot(key string) uint16

func MultiBulk deprecated 

func MultiBulk(reply interface{}, err error) ([]interface{}, error)

MultiBulk is a helper that converts an array command reply to a []interface{}.

Deprecated: Use Values instead.

func NewClusterConn 

func NewClusterConn(clusterClient *redigoCluster.Cluster, recvChanSize int) redigo.Conn

func NewRDBLoader 

func NewRDBLoader(reader *bufio.Reader, rbytes *atomic2.Int64, size int) chan *rdb.BinEntry

func OpenNetConn 

func OpenNetConn(target, authType, passwd string, tlsEnable bool) net.Conn

func OpenNetConnSoft 

func OpenNetConnSoft(target, authType, passwd string, tlsEnable bool) net.Conn

func OpenReadFile 

func OpenReadFile(name string) (*os.File, int64)

func OpenReadWriteFile 

func OpenReadWriteFile(name string) *os.File

func OpenRedisConn 

func OpenRedisConn(target []string, authType, passwd string, isCluster bool, tlsEnable bool) redigo.Conn

func OpenRedisConnWithTimeout 

func OpenRedisConnWithTimeout(target []string, authType, passwd string, readTimeout, writeTimeout time.Duration,
	isCluster bool, tlsEnable bool) redigo.Conn

func OpenSyncConn 

func OpenSyncConn(target string, authType, passwd string, tlsEnable bool) (net.Conn, <-chan int64)

func OpenWriteFile 

func OpenWriteFile(name string) *os.File

func ParseAddress 

func ParseAddress(tp string) error

parse source address and target address

func ParseInfo 

func ParseInfo(content []byte) map[string]string

func ParseKeyspace 

func ParseKeyspace(content []byte) (map[int32]int64, error)

func ParseRedisInfo 

func ParseRedisInfo(content []byte) map[string]string

parse single info field: "info server", "info keyspace"

func PickTargetRoundRobin 

func PickTargetRoundRobin(n int) int

func ReadRESPEnd 

func ReadRESPEnd(c net.Conn) (string, error)

read until hit the end of RESP: "\r\n"

func RemoveRESPEnd 

func RemoveRESPEnd(input string) string

func RestoreBigkey 

func RestoreBigkey(client redigo.Conn, key string, value string, pttl int64, db int, preDb *int)

func RestoreRdbEntry 

func RestoreRdbEntry(c redigo.Conn, e *rdb.BinEntry)

func SelectDB 

func SelectDB(c redigo.Conn, db uint32)

func SendPSyncAck 

func SendPSyncAck(bw *bufio.Writer, offset int64) error

func SendPSyncContinue 

func SendPSyncContinue(br *bufio.Reader, bw *bufio.Writer, runid string, offset int64) (string, int64, <-chan int64)

func SendPSyncFullsync 

func SendPSyncFullsync(br *bufio.Reader, bw *bufio.Writer) (string, int64, <-chan int64)

func SendPSyncListeningPort 

func SendPSyncListeningPort(c net.Conn, port int)

func StartQoS 

func StartQoS(limit int) chan struct{}

func String 

func String(reply interface{}, err error) (string, error)

String is a helper that converts a command reply to a string. If err is not equal to nil, then String returns "", err. Otherwise String converts the reply to a string as follows: 

Reply type      Result
bulk string     string(reply), nil
simple string   reply, nil
nil             "",  ErrNil
other           "",  error

func String2Bytes 

func String2Bytes(s string) []byte

func Uint64 

func Uint64(reply interface{}, err error) (uint64, error)

Uint64 is a helper that converts a command reply to 64 bit integer. If err is not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the reply to an int64 as follows: 

Reply type    Result
integer       reply, nil
bulk string   parsed reply, nil
nil           0, ErrNil
other         0, error

func Values 

func Values(reply interface{}, err error) ([]interface{}, error)

Values is a helper that converts an array command reply to a []interface{}. If err is not equal to nil, then Values returns nil, err. Otherwise, Values converts the reply as follows: 

Reply type      Result
array           reply, nil
nil             nil, ErrNil
other           nil, error

func Welcome 

func Welcome()

func WritePid 

func WritePid(id string) (err error)

func WritePidById 

func WritePidById(id string, path string) error

Types

type Checkpoint 

type Checkpoint struct {
	/*
	 * version: 0(or set not), MongoShake < 2.4, fcv == 0
	 * version: 1, MongoShake == 2.4, 0 < fcv <= 1
	 */
	CurrentVersion           int
	FeatureCompatibleVersion int
}

for checkpoint

func (Checkpoint) IsCompatible 

func (c Checkpoint) IsCompatible(v int) bool

type ClusterConn 

type ClusterConn struct {
	// contains filtered or unexported fields
}

implement redigo.Conn(https://github.com/garyburd/redigo) * Embed redis-go-cluster(https://github.com/chasex/redis-go-cluster) * The reason I create this struct is that redis-go-cluster isn't fulfill redigo.Conn * interface. So I implement "Err", "Send", "Flush" and "Receive" interfaces.

func (*ClusterConn) Close 

func (cc *ClusterConn) Close() error

func (*ClusterConn) Do 

func (cc *ClusterConn) Do(commandName string, args ...interface{}) (reply interface{}, err error)

func (*ClusterConn) Err 

func (cc *ClusterConn) Err() error

func (*ClusterConn) Flush 

func (cc *ClusterConn) Flush() error

send batcher and put the return into recvChan

func (*ClusterConn) Receive 

func (cc *ClusterConn) Receive() (reply interface{}, err error)

read recvChan

func (*ClusterConn) Send 

func (cc *ClusterConn) Send(commandName string, args ...interface{}) error

just add into batcher

type ClusterNodeInfo 

type ClusterNodeInfo struct {
	Id          string
	Address     string
	Flags       string
	Master      string
	PingSent    string
	PongRecv    string
	ConfigEpoch string
	LinkStat    string
	Slot        string
}

func ClusterNodeChoose 

func ClusterNodeChoose(input []*ClusterNodeInfo, role string) []*ClusterNodeInfo

needMaster: true(master), false(slave)

func ParseClusterNode 

func ParseClusterNode(content []byte) []*ClusterNodeInfo

* 10.1.1.1:21331> cluster nodes * d49a4c7b516b8da222d46a0a589b77f381285977 10.1.1.1:21333@31333 master - 0 1557996786000 3 connected 10923-16383 * f23ba7be501b2dcd4d6eeabd2d25551513e5c186 10.1.1.1:21336@31336 slave d49a4c7b516b8da222d46a0a589b77f381285977 0 1557996785000 6 connected * 75fffcd521738606a919607a7ddd52bcd6d65aa8 10.1.1.1:21331@31331 myself,master - 0 1557996784000 1 connected 0-5460 * da3dd51bb9cb5803d99942e0f875bc5f36dc3d10 10.1.1.1:21332@31332 master - 0 1557996786260 2 connected 5461-10922 * eff4e654d3cc361a8ec63640812e394a8deac3d6 10.1.1.1:21335@31335 slave da3dd51bb9cb5803d99942e0f875bc5f36dc3d10 0 1557996787261 5 connected * 486e081f8d47968df6a7e43ef9d3ba93b77d03b2 10.1.1.1:21334@31334 slave 75fffcd521738606a919607a7ddd52bcd6d65aa8 0 1557996785258 4 connected

type Configuration 

type Configuration struct {
	/*
	 * version: 0(or set not), MongoShake < 2.4.0, fcv == 0
	 * version: 1, MongoShake == 2.4.0, 0 <= fcv <= 1
	 */
	CurrentVersion           int
	FeatureCompatibleVersion int
}

for configuration

func (Configuration) IsCompatible 

func (c Configuration) IsCompatible(v int) bool

type Error 

type Error string

func (Error) Error 

func (err Error) Error() string

type Fcv 

type Fcv interface {
	IsCompatible(int) bool
}

type SlotOwner 

type SlotOwner struct {
	Master            string
	Slave             []string
	SlotLeftBoundary  int
	SlotRightBoundary int
}

*************************************

func GetSlotDistribution 

func GetSlotDistribution(target, authType, auth string, tlsEnable bool) ([]SlotOwner, error)

Source Files

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