[#58] common: Add getters for alphabet and IR nodes from chain

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2021-03-24 11:00:35 +03:00 committed by Alex Vanin
parent d5e230e031
commit 4ace86e9b3

View file

@ -3,6 +3,9 @@ package common
import (
"github.com/nspcc-dev/neo-go/pkg/interop"
"github.com/nspcc-dev/neo-go/pkg/interop/contract"
"github.com/nspcc-dev/neo-go/pkg/interop/native/ledger"
"github.com/nspcc-dev/neo-go/pkg/interop/native/neo"
"github.com/nspcc-dev/neo-go/pkg/interop/native/roles"
"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
"github.com/nspcc-dev/neo-go/pkg/interop/storage"
)
@ -71,3 +74,51 @@ func CommitteeMultiAddressViaStorage(ctx storage.Context, key interface{}) []byt
func CommitteeMultiAddress(sc interop.Hash160) []byte {
return contract.Call(sc, committeeMethod, contract.ReadOnly).([]byte)
}
// InnerRingNodes return list of inner ring nodes from state validator role
// in side chain.
func InnerRingNodes() []IRNode {
blockHeight := ledger.CurrentIndex()
list := roles.GetDesignatedByRole(roles.NeoFSAlphabet, uint32(blockHeight))
return keysToNodes(list)
}
// AlphabetNodes return list of alphabet nodes from committee in side chain.
func AlphabetNodes() []IRNode {
list := neo.GetCommittee()
return keysToNodes(list)
}
// AlphabetAddress returns multi address of alphabet public keys.
func AlphabetAddress() []byte {
alphabet := neo.GetCommittee()
return Multiaddress(alphabet, false)
}
// Multiaddress returns default multi signature account address for N keys.
// If committee set to true, then it is `M = N/2+1` committee account.
func Multiaddress(n []interop.PublicKey, committee bool) []byte {
threshold := len(n)/3*2 + 1
if committee {
threshold = len(n)/2 + 1
}
keys := []interop.PublicKey{}
for _, key := range n {
keys = append(keys, key)
}
return contract.CreateMultisigAccount(threshold, keys)
}
func keysToNodes(list []interop.PublicKey) []IRNode {
result := []IRNode{}
for i := range list {
result = append(result, IRNode{
PublicKey: list[i],
})
}
return result
}