utils

Documentation

Index

• func CopyStringMap(src map[string]string) (dst map[string]string)
• func CopyStringSet(src map[string]struct{}) (dst map[string]struct{})
• func DeserializeStringMap(r io.Reader) (smap map[string]string, err error)
• func DeserializeStringSet(r io.Reader) (vmap map[string]struct{}, err error)
• func FileExisted(filename string) bool
• func GetConfirmedPassword() ([]byte, error)
• func GetPassword() ([]byte, error)
• func SerializeStringMap(w io.Writer, smap map[string]string) (err error)
• func SerializeStringSet(w io.Writer, vmap map[string]struct{}) (err error)
• func StartPProf(port uint32)
• type HeightChanges
• type History
  • func NewHistory(cap int) *History
  • func (h *History) Append(height uint32, execute func(), rollback func())
  • func (h *History) Changes() []HeightChanges
  • func (h *History) Commit(height uint32)
  • func (h *History) Height() uint32
  • func (h *History) RollbackTo(height uint32) error
  • func (h *History) SeekTo(height uint32) error

Functions

func CopyStringMap

func CopyStringMap(src map[string]string) (dst map[string]string)

CopyStringMap copy the src map's key and value, and return the dst map.

func CopyStringSet

func CopyStringSet(src map[string]struct{}) (dst map[string]struct{})

CopyStringSet copy the src map's key, and return the dst map.

func DeserializeStringMap

func DeserializeStringMap(r io.Reader) (smap map[string]string, err error)

func DeserializeStringSet

func DeserializeStringSet(r io.Reader) (vmap map[string]struct{}, err error)

func FileExisted

func FileExisted(filename string) bool

func GetConfirmedPassword

func GetConfirmedPassword() ([]byte, error)

GetConfirmedPassword gets double confirmed password from user input

func GetPassword

func GetPassword() ([]byte, error)

GetPassword gets password from user input

func SerializeStringMap

func SerializeStringMap(w io.Writer, smap map[string]string) (err error)

func SerializeStringSet

func SerializeStringSet(w io.Writer, vmap map[string]struct{}) (err error)

func StartPProf

func StartPProf(port uint32)

open ela pprof ,must run with goroutine

Types

type HeightChanges

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

HeightChanges holds all changes on a particular height.

type History

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

History is a helper to log all producers and votes changes for state, so we can handle block rollback by tracing the change history, no need to loop though all transactions since the beginning of DPOS consensus.

func NewHistory

func NewHistory(cap int) *History

newHistory creates a new history instance.

func (*History) Append

func (h *History) Append(height uint32, execute func(), rollback func())

Append add a change and it's rollback into history.

func (*History) Changes

func (h *History) Changes() []HeightChanges

Changes holds the changes by the height where the changes happens.

func (*History) Commit

func (h *History) Commit(height uint32)

Commit saves the pending changes into state.

func (*History) Height

func (h *History) Height() uint32

Height returns the best height the history knows.

func (*History) RollbackTo

func (h *History) RollbackTo(height uint32) error

RollbackTo restores state to height, and remove all histories after height. If no enough histories to rollback return error.

func (*History) SeekTo

func (h *History) SeekTo(height uint32) error

SeekTo changes state to a historical height in range of history capacity.