common

package
v1.0.0 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jun 1, 2021 License: Apache-2.0 Imports: 17 Imported by: 1

Documentation

Index

Constants

View Source 
const (
	CallbacksInitCapacity = 20

	NORMAL_PRIORITY_CALLBACK   = "__NoRmAl_PrIoRiTy_CaLlBaCk"
	CRITICAL_PRIORITY_CALLBACK = "__CrItIcAl_PrIoRiTy_CaLlBaCk"
)
View Source 
const TOKEN_ESCAPE_CHAR string = `\`

Variables

View Source 
var (
	TRUE_STRINGS  = []string{"1", "t", "true", "on", "y", "yes"}
	FALSE_STRINGS = []string{"0", "f", "false", "off", "n", "no"}
)
View Source 
var URL_FRIENDLY_CHARACTERS_REGEX = regexp.MustCompile(`^[A-Za-z0-9\-_\.~]{1,253}$`)

safe characters for friendly url, rfc3986 section 2.3

Functions

func B2s 

func B2s(b []byte) string

B2s converts byte slice to a string without memory allocation. See https://groups.google.com/forum/#!msg/Golang-Nuts/ENgbUzYvCuU/90yGx7GUAgAJ .

Note it may break if string and/or slice header will change in the future go versions.

func BackupAndCleanDir 

func BackupAndCleanDir(dir string) error

BackupAndCleanDir cleans old stuff in both dir and backupDir, and backups dir to backupDir. The backupDir generated by appending postfix `_bak` for dir. It does nothing if dir does not exist.

func CloseChan 

func CloseChan(c interface{}) (ret bool)

func Exit 

func Exit(code int, msg string)

func ExpandDir 

func ExpandDir(dir string) string

ExpandDir cleans the dir, and returns itself if it's absolute, otherwise prefix with the current/working directory.

func GoID 

func GoID() (int, error)

func GraphiteSplit 

func GraphiteSplit(s string, lensep string, sep string) []string

GraphiteSplit slices s into all substrings separated by sep returns a slice of the substrings without length prefix separated by lensep. The routine does its best to split without error returned.

func IsDirEmpty 

func IsDirEmpty(name string) bool

func MkdirAll 

func MkdirAll(path string) error

MkdirAll wraps os.MakeAll with fixed perm.

func NextNumberPowerOf2 

func NextNumberPowerOf2(v uint64) uint64

Via: https://stackoverflow.com/a/466242/1705845 

https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2

func Now 

func Now() time.Time

func NowUnixNano 

func NowUnixNano() int64

func PanicToErr 

func PanicToErr(f func(), err *error) (failed bool)

func RemoveAll 

func RemoveAll(path string) error

RemoveAll wraps os.RemoveAll.

func RemoveRepeatedByte 

func RemoveRepeatedByte(s string, needRemoveByte byte) string

func S2b 

func S2b(s string) []byte

S2b converts string to a byte slice without memory allocation.

Note it may break if string and/or slice header will change in the future go versions.

func ScanTokens 

func ScanTokens(str string, removeEscapeChar bool, visitor TokenVisitor) (string, error)

func Since 

func Since(t time.Time) time.Duration

func SysProcAttr 

func SysProcAttr() *syscall.SysProcAttr

func UUID 

func UUID() (string, error)

func ValidateName 

func ValidateName(name string) error

Types

type ExpDecaySample 

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

func NewExpDecaySample 

func NewExpDecaySample(timeRange time.Duration, secondsForEachBucket int) *ExpDecaySample

func (*ExpDecaySample) Close 

func (s *ExpDecaySample) Close()

func (*ExpDecaySample) Count 

func (s *ExpDecaySample) Count() int64

func (*ExpDecaySample) Max 

func (s *ExpDecaySample) Max() int64

func (*ExpDecaySample) Min 

func (s *ExpDecaySample) Min() int64

func (*ExpDecaySample) Percentile 

func (s *ExpDecaySample) Percentile(q float64) float64

func (*ExpDecaySample) StdDev 

func (s *ExpDecaySample) StdDev() float64

func (*ExpDecaySample) Sum 

func (s *ExpDecaySample) Sum() int64

func (*ExpDecaySample) Update 

func (s *ExpDecaySample) Update(v int64)

func (*ExpDecaySample) Variance 

func (s *ExpDecaySample) Variance() float64

type Lazybuf 

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

A Lazybuf is a lazily constructed path buffer. It supports append, reading previously appended bytes, and retrieving the final string. It does not allocate a buffer to hold the output until that output diverges from s.

func NewLazybuf 

func NewLazybuf(s string) *Lazybuf

func (*Lazybuf) Append 

func (b *Lazybuf) Append(c byte)

func (*Lazybuf) Index 

func (b *Lazybuf) Index(i int) byte

func (*Lazybuf) String 

func (b *Lazybuf) String() string

type NamedCallback 

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

func NewNamedCallback 

func NewNamedCallback(name string, callback interface{}) *NamedCallback

func (*NamedCallback) Callback 

func (cb *NamedCallback) Callback() interface{}

func (*NamedCallback) Name 

func (cb *NamedCallback) Name() string

func (*NamedCallback) SetCallback 

func (cb *NamedCallback) SetCallback(callback interface{}) interface{}

type NamedCallbackSet 

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

func AddCallback 

func AddCallback(cbs *NamedCallbackSet, name string, callback interface{}, priority string) *NamedCallbackSet

func DeleteCallback 

func DeleteCallback(cbs *NamedCallbackSet, name string) *NamedCallbackSet

func NewNamedCallbackSet 

func NewNamedCallbackSet() *NamedCallbackSet

func (*NamedCallbackSet) CopyCallbacks 

func (cbs *NamedCallbackSet) CopyCallbacks() []*NamedCallback

func (*NamedCallbackSet) GetCallbacks 

func (cbs *NamedCallbackSet) GetCallbacks() []*NamedCallback

type NumericAvgAggregator 

type NumericAvgAggregator struct {
	NumericSumAggregator
	// contains filtered or unexported fields
}

func (*NumericAvgAggregator) Aggregate 

func (a *NumericAvgAggregator) Aggregate(num interface{}) error

func (*NumericAvgAggregator) Result 

func (a *NumericAvgAggregator) Result() interface{}

func (*NumericAvgAggregator) String 

func (a *NumericAvgAggregator) String() string

type NumericMaxAggregator 

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

func (*NumericMaxAggregator) Aggregate 

func (a *NumericMaxAggregator) Aggregate(num interface{}) error

func (*NumericMaxAggregator) Result 

func (a *NumericMaxAggregator) Result() interface{}

func (*NumericMaxAggregator) String 

func (a *NumericMaxAggregator) String() string

type NumericMinAggregator 

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

func (*NumericMinAggregator) Aggregate 

func (a *NumericMinAggregator) Aggregate(num interface{}) error

func (*NumericMinAggregator) Result 

func (a *NumericMinAggregator) Result() interface{}

func (*NumericMinAggregator) String 

func (a *NumericMinAggregator) String() string

type NumericSumAggregator 

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

func (*NumericSumAggregator) Aggregate 

func (a *NumericSumAggregator) Aggregate(num interface{}) error

func (*NumericSumAggregator) Result 

func (a *NumericSumAggregator) Result() interface{}

func (*NumericSumAggregator) String 

func (a *NumericSumAggregator) String() string

type StatAggregator 

type StatAggregator interface {
	Aggregate(interface{}) error
	Result() interface{}
	String() string
}

type StringRegexValue 

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

func NewStringRegexValue 

func NewStringRegexValue(val string, p *string, r *regexp.Regexp) *StringRegexValue

func (*StringRegexValue) Get 

func (s *StringRegexValue) Get() interface{}

func (*StringRegexValue) Set 

func (s *StringRegexValue) Set(val string) error

func (*StringRegexValue) String 

func (s *StringRegexValue) String() string

type TokenVisitor 

type TokenVisitor func(pos int, token string) (care bool, replacement string)

type Uint16RangeValue 

type Uint16RangeValue struct {
	// contains filtered or unexported fields
}

func NewUint16RangeValue 

func NewUint16RangeValue(val uint16, p *uint16, min, max uint16) *Uint16RangeValue

func (*Uint16RangeValue) Get 

func (i *Uint16RangeValue) Get() interface{}

func (*Uint16RangeValue) Set 

func (i *Uint16RangeValue) Set(s string) error

func (*Uint16RangeValue) String 

func (i *Uint16RangeValue) String() string

type Uint16Value 

type Uint16Value uint16

func NewUint16Value 

func NewUint16Value(val uint16, p *uint16) *Uint16Value

func (*Uint16Value) Get 

func (i *Uint16Value) Get() interface{}

func (*Uint16Value) Set 

func (i *Uint16Value) Set(s string) error

func (*Uint16Value) String 

func (i *Uint16Value) String() string

type Uint32RangeValue 

type Uint32RangeValue struct {
	// contains filtered or unexported fields
}

func NewUint32RangeValue 

func NewUint32RangeValue(val uint32, p *uint32, min, max uint32) *Uint32RangeValue

func (*Uint32RangeValue) Get 

func (i *Uint32RangeValue) Get() interface{}

func (*Uint32RangeValue) Set 

func (i *Uint32RangeValue) Set(s string) error

func (*Uint32RangeValue) String 

func (i *Uint32RangeValue) String() string

type Uint32Value 

type Uint32Value uint32

func NewUint32Value 

func NewUint32Value(val uint32, p *uint32) *Uint32Value

func (*Uint32Value) Get 

func (i *Uint32Value) Get() interface{}

func (*Uint32Value) Set 

func (i *Uint32Value) Set(s string) error

func (*Uint32Value) String 

func (i *Uint32Value) String() string

type Uint64RangeValue 

type Uint64RangeValue struct {
	// contains filtered or unexported fields
}

func NewUint64RangeValue 

func NewUint64RangeValue(val uint64, p *uint64, min, max uint64) *Uint64RangeValue

func (*Uint64RangeValue) Get 

func (i *Uint64RangeValue) Get() interface{}

func (*Uint64RangeValue) Set 

func (i *Uint64RangeValue) Set(s string) error

func (*Uint64RangeValue) String 

func (i *Uint64RangeValue) String() string

type Uint8Value 

type Uint8Value uint8

func NewUint8Value 

func NewUint8Value(val uint8, p *uint8) *Uint8Value

func (*Uint8Value) Get 

func (i *Uint8Value) Get() interface{}

func (*Uint8Value) Set 

func (i *Uint8Value) Set(s string) error

func (*Uint8Value) String 

func (i *Uint8Value) String() string

Source Files

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