common

package
v0.22.2-rc0 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jul 10, 2018 License: Apache-2.0, Apache-2.0 Imports: 29 Imported by: 0

Documentation

Overview

Package common is a generated protocol buffer package.

It is generated from these files: 

common/types.proto

It has these top-level messages: 

KVPair
KI64Pair

nolint: gas

Index

Constants

View Source 
const (
	ANSIReset      = "\x1b[0m"
	ANSIBright     = "\x1b[1m"
	ANSIDim        = "\x1b[2m"
	ANSIUnderscore = "\x1b[4m"
	ANSIBlink      = "\x1b[5m"
	ANSIReverse    = "\x1b[7m"
	ANSIHidden     = "\x1b[8m"

	ANSIFgBlack   = "\x1b[30m"
	ANSIFgRed     = "\x1b[31m"
	ANSIFgGreen   = "\x1b[32m"
	ANSIFgYellow  = "\x1b[33m"
	ANSIFgBlue    = "\x1b[34m"
	ANSIFgMagenta = "\x1b[35m"
	ANSIFgCyan    = "\x1b[36m"
	ANSIFgWhite   = "\x1b[37m"

	ANSIBgBlack   = "\x1b[40m"
	ANSIBgRed     = "\x1b[41m"
	ANSIBgGreen   = "\x1b[42m"
	ANSIBgYellow  = "\x1b[43m"
	ANSIBgBlue    = "\x1b[44m"
	ANSIBgMagenta = "\x1b[45m"
	ANSIBgCyan    = "\x1b[46m"
	ANSIBgWhite   = "\x1b[47m"
)

Variables

View Source 
var (
	ErrAlreadyStarted = errors.New("already started")
	ErrAlreadyStopped = errors.New("already stopped")
)
View Source 
var (
	Zero256 = Word256{0}
	One256  = Word256{1}
)
View Source 
var Fmt = func(format string, a ...interface{}) string {
	if len(a) == 0 {
		return format
	}
	return fmt.Sprintf(format, a...)
}

Like fmt.Sprintf, but skips formatting if args are empty.

View Source 
var TimeLayout = "2006-01-02" //this represents YYYY-MM-DD

TimeLayout helps to parse a date string of the format YYYY-MM-DD 

  Intended to be used with the following function:
	 time.Parse(TimeLayout, date)

Functions

func ASCIITrim 

func ASCIITrim(s string) string

NOTE: Assumes that s is ASCII as per IsASCIIText(), otherwise panics.

func Black 

func Black(args ...interface{}) string

func Blue 

func Blue(args ...interface{}) string

func ColoredBytes 

func ColoredBytes(data []byte, textColor, bytesColor func(...interface{}) string) string

func Connect 

func Connect(protoAddr string) (net.Conn, error)

Connect dials the given address and returns a net.Conn. The protoAddr argument should be prefixed with the protocol, eg. "tcp://127.0.0.1:8080" or "unix:///tmp/test.sock"

func Cyan 

func Cyan(args ...interface{}) string

func EnsureDir 

func EnsureDir(dir string, mode os.FileMode) error

func Exit 

func Exit(s string)

func ExpUint64 added in v0.22.0 

func ExpUint64(a, b uint64) uint64

func FileExists 

func FileExists(filePath string) bool

func Fingerprint 

func Fingerprint(slice []byte) []byte

Fingerprint returns the first 6 bytes of a byte slice. If the slice is less than 6 bytes, the fingerprint contains trailing zeroes.

func GetInt64BE added in v0.22.0 

func GetInt64BE(src []byte) int64

func GetInt64LE added in v0.22.0 

func GetInt64LE(src []byte) int64

func GetUint64BE added in v0.22.0 

func GetUint64BE(src []byte) uint64

func GetUint64LE added in v0.22.0 

func GetUint64LE(src []byte) uint64

func GoPath 

func GoPath() string

GoPath returns GOPATH env variable value. If it is not set, this function will try to call `go env GOPATH` subcommand.

func Green 

func Green(args ...interface{}) string

func Int64FromWord256 added in v0.22.0 

func Int64FromWord256(word Word256) int64

func IntInSlice 

func IntInSlice(a int, list []int) bool

IntInSlice returns true if a is found in the list.

func IsASCIIText 

func IsASCIIText(s string) bool

Returns true if s is a non-empty printable non-tab ascii character.

func IsDirEmpty 

func IsDirEmpty(name string) (bool, error)

func IsEmpty 

func IsEmpty(o interface{}) bool

Returns true if it has zero length.

func IsHex added in v0.22.0 

func IsHex(s string) bool

IsHex returns true for non-empty hex-string prefixed with "0x"

func IsTypedNil 

func IsTypedNil(o interface{}) bool

Go lacks a simple and safe way to see if something is a typed nil. See:

func IsZeros added in v0.22.0 

func IsZeros(slice []byte) bool

func Kill 

func Kill() error

Kill the running process by sending itself SIGTERM.

func LeftPadBytes added in v0.22.0 

func LeftPadBytes(slice []byte, l int) []byte

func Magenta 

func Magenta(args ...interface{}) string

func MaxInt 

func MaxInt(a, b int) int

func MaxInt16 added in v0.22.0 

func MaxInt16(a, b int16) int16

func MaxInt32 added in v0.22.0 

func MaxInt32(a, b int32) int32

func MaxInt64 

func MaxInt64(a, b int64) int64

func MaxInt8 added in v0.22.0 

func MaxInt8(a, b int8) int8

func MaxUint added in v0.22.0 

func MaxUint(a, b uint) uint

func MaxUint16 added in v0.22.0 

func MaxUint16(a, b uint16) uint16

func MaxUint32 added in v0.22.0 

func MaxUint32(a, b uint32) uint32

func MaxUint64 added in v0.22.0 

func MaxUint64(a, b uint64) uint64

func MaxUint8 added in v0.22.0 

func MaxUint8(a, b uint8) uint8

func MinInt 

func MinInt(a, b int) int

func MinInt16 added in v0.22.0 

func MinInt16(a, b int16) int16

func MinInt32 added in v0.22.0 

func MinInt32(a, b int32) int32

func MinInt64 

func MinInt64(a, b int64) int64

func MinInt8 added in v0.22.0 

func MinInt8(a, b int8) int8

func MinUint added in v0.22.0 

func MinUint(a, b uint) uint

func MinUint16 added in v0.22.0 

func MinUint16(a, b uint16) uint16

func MinUint32 added in v0.22.0 

func MinUint32(a, b uint32) uint32

func MinUint64 added in v0.22.0 

func MinUint64(a, b uint64) uint64

func MinUint8 added in v0.22.0 

func MinUint8(a, b uint8) uint8

func MustReadFile 

func MustReadFile(filePath string) []byte

func MustWriteFile 

func MustWriteFile(filePath string, contents []byte, mode os.FileMode)

func PanicConsensus 

func PanicConsensus(v interface{})

Indicates a failure of consensus. Someone was malicious or something has gone horribly wrong. These should really boot us into an "emergency-recover" mode XXX DEPRECATED

func PanicCrisis 

func PanicCrisis(v interface{})

A panic here means something has gone horribly wrong, in the form of data corruption or failure of the operating system. In a correct/healthy system, these should never fire. If they do, it's indicative of a much more serious problem. XXX DEPRECATED

func PanicQ 

func PanicQ(v interface{})

For those times when we're not sure if we should panic XXX DEPRECATED

func PanicSanity 

func PanicSanity(v interface{})

A panic resulting from a sanity check means there is a programmer error and some guarantee is not satisfied. XXX DEPRECATED

func ParseDateRange 

func ParseDateRange(dateRange string) (startDate, endDate time.Time, err error)

ParseDateRange parses a date range string of the format start:end 

  where the start and end date are of the format YYYY-MM-DD.
  The parsed dates are time.Time and will return the zero time for
  unbounded dates, ex:
  unbounded start:	:2000-12-31
	 unbounded end: 	2000-12-31:

func PrefixEndBytes added in v0.22.0 

func PrefixEndBytes(prefix []byte) []byte

PrefixEndBytes returns the end byteslice for a noninclusive range that would include all byte slices for which the input is the prefix

func Prompt 

func Prompt(prompt string, defaultValue string) (string, error)

func ProtocolAndAddress 

func ProtocolAndAddress(listenAddr string) (string, string)

ProtocolAndAddress splits an address into the protocol and address components. For instance, "tcp://127.0.0.1:8080" will be split into "tcp" and "127.0.0.1:8080". If the address has no protocol prefix, the default is "tcp".

func PutInt64BE added in v0.22.0 

func PutInt64BE(dest []byte, i int64)

func PutInt64LE added in v0.22.0 

func PutInt64LE(dest []byte, i int64)

func PutUint64BE added in v0.22.0 

func PutUint64BE(dest []byte, i uint64)

func PutUint64LE added in v0.22.0 

func PutUint64LE(dest []byte, i uint64)

func RandBytes 

func RandBytes(n int) []byte

func RandFloat32 

func RandFloat32() float32

func RandFloat64 

func RandFloat64() float64

func RandInt 

func RandInt() int

func RandInt16 

func RandInt16() int16

func RandInt31 

func RandInt31() int32

func RandInt31n 

func RandInt31n(n int32) int32

func RandInt32 

func RandInt32() int32

func RandInt63 

func RandInt63() int64

func RandInt63n 

func RandInt63n(n int64) int64

func RandInt64 

func RandInt64() int64

func RandIntn 

func RandIntn(n int) int

func RandPerm 

func RandPerm(n int) []int

func RandStr 

func RandStr(length int) string

func RandTime 

func RandTime() time.Time

func RandUint 

func RandUint() uint

func RandUint16 

func RandUint16() uint16

func RandUint16Exp added in v0.22.0 

func RandUint16Exp() uint16

func RandUint32 

func RandUint32() uint32

func RandUint32Exp added in v0.22.0 

func RandUint32Exp() uint32

func RandUint64 

func RandUint64() uint64

func RandUint64Exp added in v0.22.0 

func RandUint64Exp() uint64

func ReadFile 

func ReadFile(filePath string) ([]byte, error)

func Red 

func Red(args ...interface{}) string

func RightPadBytes added in v0.22.0 

func RightPadBytes(slice []byte, l int) []byte

func SearchUint64s added in v0.22.0 

func SearchUint64s(a []uint64, x uint64) int

func Seed 

func Seed(seed int64)

func SplitAndTrim 

func SplitAndTrim(s, sep, cutset string) []string

SplitAndTrim slices s into all subslices separated by sep and returns a slice of the string s with all leading and trailing Unicode code points contained in cutset removed. If sep is empty, SplitAndTrim splits after each UTF-8 sequence. First part is equivalent to strings.SplitN with a count of -1.

func StringInSlice 

func StringInSlice(a string, list []string) bool

StringInSlice returns true if a is found the list.

func StripHex added in v0.22.0 

func StripHex(s string) string

StripHex returns hex string without leading "0x"

func Tempdir added in v0.22.0 

func Tempdir(prefix string) (*os.File, string)

func Tempfile added in v0.22.0 

func Tempfile(prefix string) (*os.File, string)

func TrapSignal 

func TrapSignal(cb func())

TrapSignal catches the SIGTERM and executes cb function. After that it exits with code 1.

func TrimmedString added in v0.22.0 

func TrimmedString(b []byte) string

func Tuple256Split added in v0.22.0 

func Tuple256Split(t Tuple256) (Word256, Word256)

func Uint64FromWord256 added in v0.22.0 

func Uint64FromWord256(word Word256) uint64

func White 

func White(args ...interface{}) string

func WriteFile 

func WriteFile(filePath string, contents []byte, mode os.FileMode) error

func WriteFileAtomic 

func WriteFileAtomic(filename string, data []byte, perm os.FileMode) error

WriteFileAtomic creates a temporary file with data and the perm given and swaps it atomically with filename if successful.

func Yellow 

func Yellow(args ...interface{}) string

Types

type BaseService 

type BaseService struct {
	Logger log.Logger
	// contains filtered or unexported fields
}

Classical-inheritance-style service declarations. Services can be started, then stopped, then optionally restarted.

Users can override the OnStart/OnStop methods. In the absence of errors, these methods are guaranteed to be called at most once. If OnStart returns an error, service won't be marked as started, so the user can call Start again.

A call to Reset will panic, unless OnReset is overwritten, allowing OnStart/OnStop to be called again.

The caller must ensure that Start and Stop are not called concurrently.

It is ok to call Stop without calling Start first.

Typical usage: 

type FooService struct {
	BaseService
	// private fields
}

func NewFooService() *FooService {
	fs := &FooService{
		// init
	}
	fs.BaseService = *NewBaseService(log, "FooService", fs)
	return fs
}

func (fs *FooService) OnStart() error {
	fs.BaseService.OnStart() // Always call the overridden method.
	// initialize private fields
	// start subroutines, etc.
}

func (fs *FooService) OnStop() error {
	fs.BaseService.OnStop() // Always call the overridden method.
	// close/destroy private fields
	// stop subroutines, etc.
}

func NewBaseService 

func NewBaseService(logger log.Logger, name string, impl Service) *BaseService

NewBaseService creates a new BaseService.

func (*BaseService) IsRunning 

func (bs *BaseService) IsRunning() bool

IsRunning implements Service by returning true or false depending on the service's state.

func (*BaseService) OnReset 

func (bs *BaseService) OnReset() error

OnReset implements Service by panicking.

func (*BaseService) OnStart 

func (bs *BaseService) OnStart() error

OnStart implements Service by doing nothing. NOTE: Do not put anything in here, that way users don't need to call BaseService.OnStart()

func (*BaseService) OnStop 

func (bs *BaseService) OnStop()

OnStop implements Service by doing nothing. NOTE: Do not put anything in here, that way users don't need to call BaseService.OnStop()

func (*BaseService) Quit 

func (bs *BaseService) Quit() <-chan struct{}

Quit Implements Service by returning a quit channel.

func (*BaseService) Reset 

func (bs *BaseService) Reset() error

Reset implements Service by calling OnReset callback (if defined). An error will be returned if the service is running.

func (*BaseService) SetLogger 

func (bs *BaseService) SetLogger(l log.Logger)

SetLogger implements Service by setting a logger.

func (*BaseService) Start 

func (bs *BaseService) Start() error

Start implements Service by calling OnStart (if defined). An error will be returned if the service is already running or stopped. Not to start the stopped service, you need to call Reset.

func (*BaseService) Stop 

func (bs *BaseService) Stop() error

Stop implements Service by calling OnStop (if defined) and closing quit channel. An error will be returned if the service is already stopped.

func (*BaseService) String 

func (bs *BaseService) String() string

String implements Servce by returning a string representation of the service.

func (*BaseService) Wait 

func (bs *BaseService) Wait()

Wait blocks until the service is stopped.

type BitArray 

type BitArray struct {
	Bits  int      `json:"bits"`  // NOTE: persisted via reflect, must be exported
	Elems []uint64 `json:"elems"` // NOTE: persisted via reflect, must be exported
	// contains filtered or unexported fields
}

func NewBitArray 

func NewBitArray(bits int) *BitArray

There is no BitArray whose Size is 0. Use nil instead.

func (*BitArray) And 

func (bA *BitArray) And(o *BitArray) *BitArray

Returns a BitArray of smaller bit size.

func (*BitArray) Bytes 

func (bA *BitArray) Bytes() []byte

func (*BitArray) Copy 

func (bA *BitArray) Copy() *BitArray

func (*BitArray) GetIndex 

func (bA *BitArray) GetIndex(i int) bool

NOTE: behavior is undefined if i >= bA.Bits

func (*BitArray) IsEmpty 

func (bA *BitArray) IsEmpty() bool

func (*BitArray) IsFull 

func (bA *BitArray) IsFull() bool

func (*BitArray) MarshalJSON 

func (bA *BitArray) MarshalJSON() ([]byte, error)

MarshalJSON implements json.Marshaler interface by marshaling bit array using a custom format: a string of '-' or 'x' where 'x' denotes the 1 bit.

func (*BitArray) Not 

func (bA *BitArray) Not() *BitArray

func (*BitArray) Or 

func (bA *BitArray) Or(o *BitArray) *BitArray

Returns a BitArray of larger bits size.

func (*BitArray) PickRandom 

func (bA *BitArray) PickRandom() (int, bool)

func (*BitArray) SetIndex 

func (bA *BitArray) SetIndex(i int, v bool) bool

NOTE: behavior is undefined if i >= bA.Bits

func (*BitArray) Size 

func (bA *BitArray) Size() int

func (*BitArray) String 

func (bA *BitArray) String() string

String returns a string representation of BitArray: BA{<bit-string>}, where <bit-string> is a sequence of 'x' (1) and '_' (0). The <bit-string> includes spaces and newlines to help people. For a simple sequence of 'x' and '_' characters with no spaces or newlines, see the MarshalJSON() method. Example: "BA{_x_}" or "nil-BitArray" for nil.

func (*BitArray) StringIndented 

func (bA *BitArray) StringIndented(indent string) string

func (*BitArray) Sub 

func (bA *BitArray) Sub(o *BitArray) *BitArray

func (*BitArray) UnmarshalJSON 

func (bA *BitArray) UnmarshalJSON(bz []byte) error

UnmarshalJSON implements json.Unmarshaler interface by unmarshaling a custom JSON description.

func (*BitArray) Update 

func (bA *BitArray) Update(o *BitArray)

NOTE: other bitarray o is not locked when reading, so if necessary, caller must copy or lock o prior to calling Update. If bA is nil, does nothing.

type BufferCloser 

type BufferCloser struct {
	bytes.Buffer
	Closed bool
}

NOTE: Not goroutine safe

func NewBufferCloser 

func NewBufferCloser(buf []byte) *BufferCloser

func (*BufferCloser) Close 

func (bc *BufferCloser) Close() error

func (*BufferCloser) Write 

func (bc *BufferCloser) Write(p []byte) (n int, err error)

func (*BufferCloser) WriteByte 

func (bc *BufferCloser) WriteByte(c byte) error

func (*BufferCloser) WriteRune 

func (bc *BufferCloser) WriteRune(r rune) (n int, err error)

func (*BufferCloser) WriteString 

func (bc *BufferCloser) WriteString(s string) (n int, err error)

type CMap 

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

CMap is a goroutine-safe map

func NewCMap 

func NewCMap() *CMap

func (*CMap) Clear 

func (cm *CMap) Clear()

func (*CMap) Delete 

func (cm *CMap) Delete(key string)

func (*CMap) Get 

func (cm *CMap) Get(key string) interface{}

func (*CMap) Has 

func (cm *CMap) Has(key string) bool

func (*CMap) Keys 

func (cm *CMap) Keys() []string

func (*CMap) Set 

func (cm *CMap) Set(key string, value interface{})

func (*CMap) Size 

func (cm *CMap) Size() int

func (*CMap) Values 

func (cm *CMap) Values() []interface{}

type Comparable 

type Comparable interface {
	Less(o interface{}) bool
}

type Error 

type Error interface {
	Error() string
	Stacktrace() Error
	Trace(offset int, format string, args ...interface{}) Error
	Data() interface{}
}

Usage with arbitrary error data:

```go 

// Error construction
type MyError struct{}
var err1 error = NewErrorWithData(MyError{}, "my message")
...
// Wrapping
var err2 error  = ErrorWrap(err1, "another message")
if (err1 != err2) { panic("should be the same")
...
// Error handling
switch err2.Data().(type){
	case MyError: ...
    default: ...
}

```

func ErrorWrap 

func ErrorWrap(cause interface{}, format string, args ...interface{}) Error

func NewError 

func NewError(format string, args ...interface{}) Error

New Error with formatted message. The Error's Data will be a FmtError type.

func NewErrorWithData 

func NewErrorWithData(data interface{}) Error

New Error with specified data.

type FmtError 

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

FmtError is the data type for NewError() (e.g. NewError().Data().(FmtError)) Theoretically it could be used to switch on the format string.

```go 

// Error construction
var err1 error = NewError("invalid username %v", "BOB")
var err2 error = NewError("another kind of error")
...
// Error handling
switch err1.Data().(cmn.FmtError).Format() {
	case "invalid username %v": ...
	case "another kind of error": ...
    default: ...
}

```

func (FmtError) Error 

func (fe FmtError) Error() string

func (FmtError) Format 

func (fe FmtError) Format() string

func (FmtError) String 

func (fe FmtError) String() string

type Heap 

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

Example usage:

``` h := NewHeap()

h.Push("msg1", 1) h.Push("msg3", 3) h.Push("msg2", 2)

fmt.Println(h.Pop()) // msg1 fmt.Println(h.Pop()) // msg2 fmt.Println(h.Pop()) // msg3 ```

func NewHeap 

func NewHeap() *Heap

func (*Heap) Len 

func (h *Heap) Len() int64

func (*Heap) Peek 

func (h *Heap) Peek() interface{}

func (*Heap) Pop 

func (h *Heap) Pop() interface{}

func (*Heap) Push 

func (h *Heap) Push(value interface{}, priority int)

func (*Heap) PushBytes 

func (h *Heap) PushBytes(value interface{}, priority []byte)

func (*Heap) PushComparable 

func (h *Heap) PushComparable(value interface{}, priority Comparable)

func (*Heap) Update 

func (h *Heap) Update(value interface{}, priority Comparable)

type HexBytes 

type HexBytes []byte

The main purpose of HexBytes is to enable HEX-encoding for json/encoding.

func (HexBytes) Bytes 

func (bz HexBytes) Bytes() []byte

Allow it to fulfill various interfaces in light-client, etc...

func (HexBytes) Format 

func (bz HexBytes) Format(s fmt.State, verb rune)

func (HexBytes) Marshal 

func (bz HexBytes) Marshal() ([]byte, error)

Marshal needed for protobuf compatibility

func (HexBytes) MarshalJSON 

func (bz HexBytes) MarshalJSON() ([]byte, error)

This is the point of Bytes.

func (HexBytes) String 

func (bz HexBytes) String() string

func (*HexBytes) Unmarshal 

func (bz *HexBytes) Unmarshal(data []byte) error

Unmarshal needed for protobuf compatibility

func (*HexBytes) UnmarshalJSON 

func (bz *HexBytes) UnmarshalJSON(data []byte) error

This is the point of Bytes.

type KI64Pair 

type KI64Pair struct {
	Key   []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
	Value int64  `protobuf:"varint,2,opt,name=value" json:"value,omitempty"`
}

Define these here for compatibility but use tmlibs/common.KI64Pair.

func (*KI64Pair) Descriptor 

func (*KI64Pair) Descriptor() ([]byte, []int)

func (*KI64Pair) GetKey 

func (m *KI64Pair) GetKey() []byte

func (*KI64Pair) GetValue 

func (m *KI64Pair) GetValue() int64

func (*KI64Pair) ProtoMessage 

func (*KI64Pair) ProtoMessage()

func (*KI64Pair) Reset 

func (m *KI64Pair) Reset()

func (*KI64Pair) String 

func (m *KI64Pair) String() string

type KI64Pairs 

type KI64Pairs []KI64Pair

func (KI64Pairs) Len 

func (kvs KI64Pairs) Len() int

Sorting

func (KI64Pairs) Less 

func (kvs KI64Pairs) Less(i, j int) bool

func (KI64Pairs) Sort 

func (kvs KI64Pairs) Sort()

func (KI64Pairs) Swap 

func (kvs KI64Pairs) Swap(i, j int)

type KVPair 

type KVPair struct {
	Key   []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
}

Define these here for compatibility but use tmlibs/common.KVPair.

func (*KVPair) Descriptor 

func (*KVPair) Descriptor() ([]byte, []int)

func (*KVPair) GetKey 

func (m *KVPair) GetKey() []byte

func (*KVPair) GetValue 

func (m *KVPair) GetValue() []byte

func (*KVPair) ProtoMessage 

func (*KVPair) ProtoMessage()

func (*KVPair) Reset 

func (m *KVPair) Reset()

func (*KVPair) String 

func (m *KVPair) String() string

type KVPairs 

type KVPairs []KVPair

func (KVPairs) Len 

func (kvs KVPairs) Len() int

Sorting

func (KVPairs) Less 

func (kvs KVPairs) Less(i, j int) bool

func (KVPairs) Sort 

func (kvs KVPairs) Sort()

func (KVPairs) Swap 

func (kvs KVPairs) Swap(i, j int)

type PrefixedReader 

type PrefixedReader struct {
	Prefix []byte
	// contains filtered or unexported fields
}

func NewPrefixedReader 

func NewPrefixedReader(prefix []byte, reader io.Reader) *PrefixedReader

func (*PrefixedReader) Read 

func (pr *PrefixedReader) Read(p []byte) (n int, err error)

type Rand 

type Rand struct {
	sync.Mutex
	// contains filtered or unexported fields
}

func NewRand 

func NewRand() *Rand

func (*Rand) Bytes 

func (r *Rand) Bytes(n int) []byte

RandBytes returns n random bytes from the OS's source of entropy ie. via crypto/rand. It is not safe for cryptographic usage.

func (*Rand) Float32 

func (r *Rand) Float32() float32

It is not safe for cryptographic usage.

func (*Rand) Float64 

func (r *Rand) Float64() float64

It is not safe for cryptographic usage.

func (*Rand) Int 

func (r *Rand) Int() int

It is not safe for cryptographic usage.

func (*Rand) Int16 

func (r *Rand) Int16() int16

It is not safe for cryptographic usage.

func (*Rand) Int31 

func (r *Rand) Int31() int32

It is not safe for cryptographic usage.

func (*Rand) Int31n 

func (r *Rand) Int31n(n int32) int32

It is not safe for cryptographic usage.

func (*Rand) Int32 

func (r *Rand) Int32() int32

It is not safe for cryptographic usage.

func (*Rand) Int63 

func (r *Rand) Int63() int64

It is not safe for cryptographic usage.

func (*Rand) Int63n 

func (r *Rand) Int63n(n int64) int64

It is not safe for cryptographic usage.

func (*Rand) Int64 

func (r *Rand) Int64() int64

It is not safe for cryptographic usage.

func (*Rand) Intn 

func (r *Rand) Intn(n int) int

RandIntn returns, as an int, a non-negative pseudo-random number in [0, n). It panics if n <= 0. It is not safe for cryptographic usage.

func (*Rand) Perm 

func (r *Rand) Perm(n int) []int

RandPerm returns a pseudo-random permutation of n integers in [0, n). It is not safe for cryptographic usage.

func (*Rand) Seed 

func (r *Rand) Seed(seed int64)

func (*Rand) Str 

func (r *Rand) Str(length int) string

Constructs an alphanumeric string of given length. It is not safe for cryptographic usage.

func (*Rand) Time 

func (r *Rand) Time() time.Time

It is not safe for cryptographic usage.

func (*Rand) Uint 

func (r *Rand) Uint() uint

It is not safe for cryptographic usage.

func (*Rand) Uint16 

func (r *Rand) Uint16() uint16

It is not safe for cryptographic usage.

func (*Rand) Uint16Exp added in v0.22.0 

func (r *Rand) Uint16Exp() uint16

Distributed pseudo-exponentially to test for various cases It is not safe for cryptographic usage.

func (*Rand) Uint32 

func (r *Rand) Uint32() uint32

It is not safe for cryptographic usage.

func (*Rand) Uint32Exp added in v0.22.0 

func (r *Rand) Uint32Exp() uint32

Distributed pseudo-exponentially to test for various cases It is not safe for cryptographic usage.

func (*Rand) Uint64 

func (r *Rand) Uint64() uint64

It is not safe for cryptographic usage.

func (*Rand) Uint64Exp added in v0.22.0 

func (r *Rand) Uint64Exp() uint64

Distributed pseudo-exponentially to test for various cases It is not safe for cryptographic usage.

type RepeatTimer 

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

RepeatTimer repeatedly sends a struct{}{} to `.Chan()` after each `dur` period. (It's good for keeping connections alive.) A RepeatTimer must be stopped, or it will keep a goroutine alive.

func NewRepeatTimer 

func NewRepeatTimer(name string, dur time.Duration) *RepeatTimer

NewRepeatTimer returns a RepeatTimer with a defaultTicker.

func NewRepeatTimerWithTickerMaker 

func NewRepeatTimerWithTickerMaker(name string, dur time.Duration, tm TickerMaker) *RepeatTimer

NewRepeatTimerWithTicker returns a RepeatTimer with the given ticker maker.

func (*RepeatTimer) Chan 

func (t *RepeatTimer) Chan() <-chan time.Time

func (*RepeatTimer) Reset 

func (t *RepeatTimer) Reset()

Wait the duration again before firing.

func (*RepeatTimer) Stop 

func (t *RepeatTimer) Stop()

type Service 

type Service interface {
	// Start the service.
	// If it's already started or stopped, will return an error.
	// If OnStart() returns an error, it's returned by Start()
	Start() error
	OnStart() error

	// Stop the service.
	// If it's already stopped, will return an error.
	// OnStop must never error.
	Stop() error
	OnStop()

	// Reset the service.
	// Panics by default - must be overwritten to enable reset.
	Reset() error
	OnReset() error

	// Return true if the service is running
	IsRunning() bool

	// Quit returns a channel, which is closed once service is stopped.
	Quit() <-chan struct{}

	// String representation of the service
	String() string

	// SetLogger sets a logger.
	SetLogger(log.Logger)
}

Service defines a service that can be started, stopped, and reset.

type Task 

type Task func(i int) (val interface{}, err error, abort bool)

val: the value returned after task execution. err: the error returned during task completion. abort: tells Parallel to return, whether or not all tasks have completed.

type TaskResult 

type TaskResult struct {
	Value interface{}
	Error error
}

type TaskResultCh 

type TaskResultCh <-chan TaskResult

type TaskResultSet 

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

func Parallel 

func Parallel(tasks ...Task) (trs *TaskResultSet, ok bool)

Run tasks in parallel, with ability to abort early. Returns ok=false iff any of the tasks returned abort=true. NOTE: Do not implement quit features here. Instead, provide convenient concurrent quit-like primitives, passed implicitly via Task closures. (e.g. it's not Parallel's concern how you quit/abort your tasks).

func (*TaskResultSet) Channels 

func (trs *TaskResultSet) Channels() []TaskResultCh

func (*TaskResultSet) FirstError 

func (trs *TaskResultSet) FirstError() error

Returns the firstmost (by task index) error as discovered by all previous Reap() calls.

func (*TaskResultSet) FirstValue 

func (trs *TaskResultSet) FirstValue() interface{}

Returns the firstmost (by task index) error as discovered by all previous Reap() calls.

func (*TaskResultSet) LatestResult 

func (trs *TaskResultSet) LatestResult(index int) (TaskResult, bool)

func (*TaskResultSet) Reap 

func (trs *TaskResultSet) Reap() *TaskResultSet

NOTE: Not concurrency safe. Writes results to trs.results without waiting for all tasks to complete.

func (*TaskResultSet) Wait 

func (trs *TaskResultSet) Wait() *TaskResultSet

NOTE: Not concurrency safe. Like Reap() but waits until all tasks have returned or panic'd.

type ThrottleTimer 

type ThrottleTimer struct {
	Name string
	Ch   chan struct{}
	// contains filtered or unexported fields
}

ThrottleTimer fires an event at most "dur" after each .Set() call. If a short burst of .Set() calls happens, ThrottleTimer fires once. If a long continuous burst of .Set() calls happens, ThrottleTimer fires at most once every "dur".

func NewThrottleTimer 

func NewThrottleTimer(name string, dur time.Duration) *ThrottleTimer

func (*ThrottleTimer) Set 

func (t *ThrottleTimer) Set()

func (*ThrottleTimer) Stop 

func (t *ThrottleTimer) Stop() bool

For ease of .Stop()'ing services before .Start()'ing them, we ignore .Stop()'s on nil ThrottleTimers

func (*ThrottleTimer) Unset 

func (t *ThrottleTimer) Unset()

type Ticker 

type Ticker interface {

	// Never changes, never closes.
	Chan() <-chan time.Time

	// Stopping a stopped Ticker will panic.
	Stop()
}

Ticker is a basic ticker interface.

type TickerMaker 

type TickerMaker func(dur time.Duration) Ticker

Used by RepeatTimer the first time, and every time it's Reset() after Stop().

func NewLogicalTickerMaker 

func NewLogicalTickerMaker(source chan time.Time) TickerMaker

Construct a TickerMaker that always uses `source`. It's useful for simulating a deterministic clock.

type Tuple256 added in v0.22.0 

type Tuple256 struct {
	First  Word256
	Second Word256
}

func (Tuple256) Compare added in v0.22.0 

func (tuple Tuple256) Compare(other Tuple256) int

type Tuple256Slice added in v0.22.0 

type Tuple256Slice []Tuple256

func (Tuple256Slice) Len added in v0.22.0 

func (p Tuple256Slice) Len() int

func (Tuple256Slice) Less added in v0.22.0 

func (p Tuple256Slice) Less(i, j int) bool

func (Tuple256Slice) Sort added in v0.22.0 

func (p Tuple256Slice) Sort()

func (Tuple256Slice) Swap added in v0.22.0 

func (p Tuple256Slice) Swap(i, j int)

type Uint64Slice added in v0.22.0 

type Uint64Slice []uint64

func (Uint64Slice) Len added in v0.22.0 

func (p Uint64Slice) Len() int

func (Uint64Slice) Less added in v0.22.0 

func (p Uint64Slice) Less(i, j int) bool

func (Uint64Slice) Search added in v0.22.0 

func (p Uint64Slice) Search(x uint64) int

func (Uint64Slice) Sort added in v0.22.0 

func (p Uint64Slice) Sort()

func (Uint64Slice) Swap added in v0.22.0 

func (p Uint64Slice) Swap(i, j int)

type Word256 added in v0.22.0 

type Word256 [32]byte

func Int64ToWord256 added in v0.22.0 

func Int64ToWord256(i int64) Word256

func LeftPadWord256 added in v0.22.0 

func LeftPadWord256(bz []byte) (word Word256)

func RightPadWord256 added in v0.22.0 

func RightPadWord256(bz []byte) (word Word256)

func Uint64ToWord256 added in v0.22.0 

func Uint64ToWord256(i uint64) Word256

func (Word256) Bytes added in v0.22.0 

func (w Word256) Bytes() []byte

func (Word256) Compare added in v0.22.0 

func (w Word256) Compare(other Word256) int

func (Word256) Copy added in v0.22.0 

func (w Word256) Copy() Word256

func (Word256) IsZero added in v0.22.0 

func (w Word256) IsZero() bool

func (Word256) Postfix added in v0.22.0 

func (w Word256) Postfix(n int) []byte

func (Word256) Prefix added in v0.22.0 

func (w Word256) Prefix(n int) []byte

func (Word256) String added in v0.22.0 

func (w Word256) String() string

func (Word256) TrimmedString added in v0.22.0 

func (w Word256) TrimmedString() string

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