frostfs-contract/common/ir.go

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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"
)
type IRNode struct {
PublicKey interop.PublicKey
}
// InnerRingNodes return a list of inner ring nodes from state validator role
// in the sidechain.
func InnerRingNodes() []interop.PublicKey {
blockHeight := ledger.CurrentIndex()
return roles.GetDesignatedByRole(roles.NeoFSAlphabet, uint32(blockHeight+1))
}
// AlphabetNodes returns a list of alphabet nodes from committee in the sidechain.
func AlphabetNodes() []interop.PublicKey {
return neo.GetCommittee()
}
// AlphabetAddress returns multi address of alphabet public keys.
func AlphabetAddress() interop.Hash160 {
alphabet := neo.GetCommittee()
return Multiaddress(alphabet, false)
}
// CommitteeAddress returns multi address of committee.
func CommitteeAddress() interop.Hash160 {
committee := neo.GetCommittee()
return Multiaddress(committee, true)
}
// Multiaddress returns default multisignature account address for N keys.
// If committee set to true, it is `M = N/2+1` committee account.
func Multiaddress(n []interop.PublicKey, committee bool) interop.Hash160 {
threshold := len(n)*2/3 + 1
if committee {
threshold = len(n)/2 + 1
}
return contract.CreateMultisigAccount(threshold, n)
}