forked from TrueCloudLab/frostfs-contract
9d0a82bc89
Current height makes it impossible to change role and make some operations in one block. Also, it may lead to accepting some operations that are approved by already not valid alphabet. Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
85 lines
2.3 KiB
Go
85 lines
2.3 KiB
Go
package common
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/ledger"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/neo"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/roles"
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"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
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)
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type IRNode struct {
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PublicKey interop.PublicKey
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}
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const irListMethod = "innerRingList"
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// InnerRingInvoker returns public key of inner ring node that invoked contract.
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// Work around for environments without notary support.
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func InnerRingInvoker(ir []IRNode) interop.PublicKey {
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for i := 0; i < len(ir); i++ {
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node := ir[i]
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if runtime.CheckWitness(node.PublicKey) {
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return node.PublicKey
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}
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}
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return nil
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}
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// InnerRingNodes return list of inner ring nodes from state validator role
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// in side chain.
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func InnerRingNodes() []IRNode {
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blockHeight := ledger.CurrentIndex()
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list := roles.GetDesignatedByRole(roles.NeoFSAlphabet, uint32(blockHeight+1))
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return keysToNodes(list)
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}
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// InnerRingNodesFromNetmap gets list of inner ring through
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// calling "innerRingList" method of smart contract.
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// Work around for environments without notary support.
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func InnerRingNodesFromNetmap(sc interop.Hash160) []IRNode {
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return contract.Call(sc, irListMethod, contract.ReadOnly).([]IRNode)
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}
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// AlphabetNodes return list of alphabet nodes from committee in side chain.
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func AlphabetNodes() []IRNode {
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list := neo.GetCommittee()
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return keysToNodes(list)
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}
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// AlphabetAddress returns multi address of alphabet public keys.
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func AlphabetAddress() []byte {
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alphabet := neo.GetCommittee()
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return Multiaddress(alphabet, false)
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}
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// CommitteeAddress returns multi address of committee.
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func CommitteeAddress() []byte {
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committee := neo.GetCommittee()
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return Multiaddress(committee, true)
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}
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// Multiaddress returns default multi signature account address for N keys.
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// If committee set to true, then it is `M = N/2+1` committee account.
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func Multiaddress(n []interop.PublicKey, committee bool) []byte {
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threshold := len(n)*2/3 + 1
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if committee {
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threshold = len(n)/2 + 1
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}
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return contract.CreateMultisigAccount(threshold, n)
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}
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func keysToNodes(list []interop.PublicKey) []IRNode {
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result := []IRNode{}
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for i := range list {
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result = append(result, IRNode{
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PublicKey: list[i],
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})
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}
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return result
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}
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