You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
153 lines
4.4 KiB
153 lines
4.4 KiB
package lite
|
|
|
|
import (
|
|
"time"
|
|
|
|
crypto "github.com/tendermint/go-crypto"
|
|
|
|
"github.com/tendermint/tendermint/types"
|
|
)
|
|
|
|
// ValKeys is a helper for testing.
|
|
//
|
|
// It lets us simulate signing with many keys, either ed25519 or secp256k1.
|
|
// The main use case is to create a set, and call GenCommit
|
|
// to get properly signed header for testing.
|
|
//
|
|
// You can set different weights of validators each time you call
|
|
// ToValidators, and can optionally extend the validator set later
|
|
// with Extend or ExtendSecp
|
|
type ValKeys []crypto.PrivKey
|
|
|
|
// GenValKeys produces an array of private keys to generate commits.
|
|
func GenValKeys(n int) ValKeys {
|
|
res := make(ValKeys, n)
|
|
for i := range res {
|
|
res[i] = crypto.GenPrivKeyEd25519().Wrap()
|
|
}
|
|
return res
|
|
}
|
|
|
|
// Change replaces the key at index i.
|
|
func (v ValKeys) Change(i int) ValKeys {
|
|
res := make(ValKeys, len(v))
|
|
copy(res, v)
|
|
res[i] = crypto.GenPrivKeyEd25519().Wrap()
|
|
return res
|
|
}
|
|
|
|
// Extend adds n more keys (to remove, just take a slice).
|
|
func (v ValKeys) Extend(n int) ValKeys {
|
|
extra := GenValKeys(n)
|
|
return append(v, extra...)
|
|
}
|
|
|
|
// GenSecpValKeys produces an array of secp256k1 private keys to generate commits.
|
|
func GenSecpValKeys(n int) ValKeys {
|
|
res := make(ValKeys, n)
|
|
for i := range res {
|
|
res[i] = crypto.GenPrivKeySecp256k1().Wrap()
|
|
}
|
|
return res
|
|
}
|
|
|
|
// ExtendSecp adds n more secp256k1 keys (to remove, just take a slice).
|
|
func (v ValKeys) ExtendSecp(n int) ValKeys {
|
|
extra := GenSecpValKeys(n)
|
|
return append(v, extra...)
|
|
}
|
|
|
|
// ToValidators produces a list of validators from the set of keys
|
|
// The first key has weight `init` and it increases by `inc` every step
|
|
// so we can have all the same weight, or a simple linear distribution
|
|
// (should be enough for testing).
|
|
func (v ValKeys) ToValidators(init, inc int64) *types.ValidatorSet {
|
|
res := make([]*types.Validator, len(v))
|
|
for i, k := range v {
|
|
res[i] = types.NewValidator(k.PubKey(), init+int64(i)*inc)
|
|
}
|
|
return types.NewValidatorSet(res)
|
|
}
|
|
|
|
// signHeader properly signs the header with all keys from first to last exclusive.
|
|
func (v ValKeys) signHeader(header *types.Header, first, last int) *types.Commit {
|
|
votes := make([]*types.Vote, len(v))
|
|
|
|
// we need this list to keep the ordering...
|
|
vset := v.ToValidators(1, 0)
|
|
|
|
// fill in the votes we want
|
|
for i := first; i < last; i++ {
|
|
vote := makeVote(header, vset, v[i])
|
|
votes[vote.ValidatorIndex] = vote
|
|
}
|
|
|
|
res := &types.Commit{
|
|
BlockID: types.BlockID{Hash: header.Hash()},
|
|
Precommits: votes,
|
|
}
|
|
return res
|
|
}
|
|
|
|
func makeVote(header *types.Header, vals *types.ValidatorSet, key crypto.PrivKey) *types.Vote {
|
|
addr := key.PubKey().Address()
|
|
idx, _ := vals.GetByAddress(addr)
|
|
vote := &types.Vote{
|
|
ValidatorAddress: addr,
|
|
ValidatorIndex: idx,
|
|
Height: header.Height,
|
|
Round: 1,
|
|
Timestamp: time.Now().UTC(),
|
|
Type: types.VoteTypePrecommit,
|
|
BlockID: types.BlockID{Hash: header.Hash()},
|
|
}
|
|
// Sign it
|
|
signBytes := types.SignBytes(header.ChainID, vote)
|
|
vote.Signature = key.Sign(signBytes)
|
|
return vote
|
|
}
|
|
|
|
// Silences warning that vals can also be merkle.Hashable
|
|
// nolint: interfacer
|
|
func genHeader(chainID string, height int64, txs types.Txs,
|
|
vals *types.ValidatorSet, appHash, consHash, resHash []byte) *types.Header {
|
|
|
|
return &types.Header{
|
|
ChainID: chainID,
|
|
Height: height,
|
|
Time: time.Now(),
|
|
NumTxs: int64(len(txs)),
|
|
TotalTxs: int64(len(txs)),
|
|
// LastBlockID
|
|
// LastCommitHash
|
|
ValidatorsHash: vals.Hash(),
|
|
DataHash: txs.Hash(),
|
|
AppHash: appHash,
|
|
ConsensusHash: consHash,
|
|
LastResultsHash: resHash,
|
|
}
|
|
}
|
|
|
|
// GenCommit calls genHeader and signHeader and combines them into a Commit.
|
|
func (v ValKeys) GenCommit(chainID string, height int64, txs types.Txs,
|
|
vals *types.ValidatorSet, appHash, consHash, resHash []byte, first, last int) Commit {
|
|
|
|
header := genHeader(chainID, height, txs, vals, appHash, consHash, resHash)
|
|
check := Commit{
|
|
Header: header,
|
|
Commit: v.signHeader(header, first, last),
|
|
}
|
|
return check
|
|
}
|
|
|
|
// GenFullCommit calls genHeader and signHeader and combines them into a Commit.
|
|
func (v ValKeys) GenFullCommit(chainID string, height int64, txs types.Txs,
|
|
vals *types.ValidatorSet, appHash, consHash, resHash []byte, first, last int) FullCommit {
|
|
|
|
header := genHeader(chainID, height, txs, vals, appHash, consHash, resHash)
|
|
commit := Commit{
|
|
Header: header,
|
|
Commit: v.signHeader(header, first, last),
|
|
}
|
|
return NewFullCommit(commit, vals)
|
|
}
|