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119 lines
2.8 KiB
119 lines
2.8 KiB
package types
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import (
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"bytes"
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"fmt"
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"io"
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"github.com/tendermint/go-crypto"
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"github.com/tendermint/go-wire"
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cmn "github.com/tendermint/tmlibs/common"
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)
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// Volatile state for each Validator
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// NOTE: The Accum is not included in Validator.Hash();
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// make sure to update that method if changes are made here
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type Validator struct {
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Address Address `json:"address"`
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PubKey crypto.PubKey `json:"pub_key"`
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VotingPower int64 `json:"voting_power"`
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Accum int64 `json:"accum"`
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}
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func NewValidator(pubKey crypto.PubKey, votingPower int64) *Validator {
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return &Validator{
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Address: pubKey.Address(),
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PubKey: pubKey,
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VotingPower: votingPower,
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Accum: 0,
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}
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}
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// Creates a new copy of the validator so we can mutate accum.
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// Panics if the validator is nil.
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func (v *Validator) Copy() *Validator {
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vCopy := *v
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return &vCopy
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}
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// Returns the one with higher Accum.
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func (v *Validator) CompareAccum(other *Validator) *Validator {
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if v == nil {
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return other
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}
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if v.Accum > other.Accum {
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return v
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} else if v.Accum < other.Accum {
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return other
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} else {
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if bytes.Compare(v.Address, other.Address) < 0 {
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return v
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} else if bytes.Compare(v.Address, other.Address) > 0 {
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return other
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} else {
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cmn.PanicSanity("Cannot compare identical validators")
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return nil
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}
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}
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}
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func (v *Validator) String() string {
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if v == nil {
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return "nil-Validator"
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}
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return fmt.Sprintf("Validator{%v %v VP:%v A:%v}",
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v.Address,
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v.PubKey,
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v.VotingPower,
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v.Accum)
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}
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// Hash computes the unique ID of a validator with a given voting power.
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// It excludes the Accum value, which changes with every round.
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func (v *Validator) Hash() []byte {
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return wire.BinaryRipemd160(struct {
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Address Address
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PubKey crypto.PubKey
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VotingPower int64
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}{
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v.Address,
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v.PubKey,
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v.VotingPower,
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})
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}
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//-------------------------------------
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var ValidatorCodec = validatorCodec{}
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type validatorCodec struct{}
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func (vc validatorCodec) Encode(o interface{}, w io.Writer, n *int, err *error) {
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wire.WriteBinary(o.(*Validator), w, n, err)
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}
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func (vc validatorCodec) Decode(r io.Reader, n *int, err *error) interface{} {
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return wire.ReadBinary(&Validator{}, r, 0, n, err)
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}
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func (vc validatorCodec) Compare(o1 interface{}, o2 interface{}) int {
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cmn.PanicSanity("ValidatorCodec.Compare not implemented")
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return 0
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}
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//--------------------------------------------------------------------------------
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// For testing...
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// RandValidator returns a randomized validator, useful for testing.
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// UNSTABLE
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func RandValidator(randPower bool, minPower int64) (*Validator, *PrivValidatorFS) {
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_, tempFilePath := cmn.Tempfile("priv_validator_")
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privVal := GenPrivValidatorFS(tempFilePath)
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votePower := minPower
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if randPower {
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votePower += int64(cmn.RandUint32())
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}
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val := NewValidator(privVal.GetPubKey(), votePower)
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return val, privVal
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}
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