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[#170] Implement validator voting function in inner ring

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This function calculates validator key based on inner ring index
and invokes `Vote` method of corresponding alphabet contract.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2020-11-13 14:45:43 +03:00 committed by Alex Vanin
parent d02c24db5c
commit 2240cde826
1 changed files with 30 additions and 0 deletions
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30
pkg/innerring/state.go
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@ -1,5 +1,10 @@
package innerring
import (
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neofs-node/pkg/innerring/invoke"
)
// EpochCounter is a getter for a global epoch counter.
func (s *Server) EpochCounter() uint64 {
return s.epochCounter.Load()
@ -21,3 +26,28 @@ func (s *Server) IsActive() bool {
func (s *Server) Index() int32 {
return s.innerRingIndex.Load()
}
func (s *Server) voteForSidechainValidator(validators []keys.PublicKey) error {
index := s.Index()
if index < 0 || index >= alphabetContractsN {
s.log.Info("ignore validator vote: node not in alphabet range")
return nil
}
if len(validators) == 0 {
s.log.Info("ignore validator vote: empty validators list")
return nil
}
// len(validators) can be less than 7, in this case we split votes by
// using `mod` operations, e.g: with two validators:
// - node[0] vote for validators[0],
// - node[1] vote for validators[1],
// - node[2] vote for validators[0], etc.
// If there are more than 7 validators, this function will ignore the rest.
candidate := validators[int(index)%len(validators)]
return invoke.AlphabetVote(s.morphClient, s.contracts.alphabet[index], candidate)
}