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Merge pull request #1519 from nspcc-dev/designate-role-history

Browse source 
native: implement designate contract history retention
This commit is contained in:
Roman Khimov 2020-11-06 15:35:18 +03:00 committed by GitHub
commit 0ee377792e
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 174 additions and 49 deletions
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4
pkg/core/blockchain.go
View file

@ -1306,8 +1306,8 @@ func (bc *Blockchain) verifyTxAttributes(tx *transaction.Transaction) error {
}
return fmt.Errorf("%w: high priority tx is not signed by committee", ErrInvalidAttribute)
case transaction.OracleResponseT:
h, err := bc.contracts.Oracle.GetScriptHash()
if err != nil {
h, err := bc.contracts.Oracle.GetScriptHash(bc.dao)
if err != nil || h.Equals(util.Uint160{}) {
return fmt.Errorf("%w: %v", ErrInvalidAttribute, err)
}
hasOracle := false

4
pkg/core/blockchain_test.go
View file

@ -499,7 +499,9 @@ func TestVerifyTx(t *testing.T) {
InvocationScript: testchain.SignCommittee(txSetOracle.GetSignedPart()),
VerificationScript: testchain.CommitteeVerificationScript(),
}}
ic := bc.newInteropContext(trigger.All, bc.dao, nil, txSetOracle)
bl := block.New(netmode.UnitTestNet)
bl.Index = bc.BlockHeight() + 1
ic := bc.newInteropContext(trigger.All, bc.dao, bl, txSetOracle)
ic.SpawnVM()
ic.VM.LoadScript([]byte{byte(opcode.RET)})
require.NoError(t, bc.contracts.Designate.DesignateAsRole(ic, native.RoleOracle, oraclePubs))

139
pkg/core/native/designate.go
View file

@ -1,6 +1,7 @@
package native
import (
"encoding/binary"
"errors"
"math"
"sort"
@ -12,8 +13,10 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
@ -23,8 +26,13 @@ type Designate struct {
NEO *NEO
rolesChangedFlag atomic.Value
oracleNodes atomic.Value
oracleHash atomic.Value
oracles atomic.Value
}
type oraclesData struct {
nodes keys.PublicKeys
addr util.Uint160
height uint32
}
const (
@ -46,9 +54,12 @@ const (
// Various errors.
var (
ErrInvalidRole = errors.New("invalid role")
ErrEmptyNodeList = errors.New("node list is empty")
ErrLargeNodeList = errors.New("node list is too large")
ErrAlreadyDesignated = errors.New("already designated given role at current block")
ErrEmptyNodeList = errors.New("node list is empty")
ErrInvalidIndex = errors.New("invalid index")
ErrInvalidRole = errors.New("invalid role")
ErrLargeNodeList = errors.New("node list is too large")
ErrNoBlock = errors.New("no persisting block in the context")
)
func isValidRole(r Role) bool {
@ -61,8 +72,9 @@ func newDesignate() *Designate {
s.Manifest.Features = smartcontract.HasStorage
desc := newDescriptor("getDesignatedByRole", smartcontract.ArrayType,
manifest.NewParameter("role", smartcontract.IntegerType))
md := newMethodAndPrice(s.getDesignatedByRole, 0, smartcontract.AllowStates)
manifest.NewParameter("role", smartcontract.IntegerType),
manifest.NewParameter("index", smartcontract.IntegerType))
md := newMethodAndPrice(s.getDesignatedByRole, 1000000, smartcontract.AllowStates)
s.AddMethod(md, desc, false)
desc = newDescriptor("designateAsRole", smartcontract.VoidType,
@ -80,16 +92,6 @@ func newDesignate() *Designate {
// Initialize initializes Oracle contract.
func (s *Designate) Initialize(ic *interop.Context) error {
roles := []Role{RoleStateValidator, RoleOracle}
for _, r := range roles {
si := &state.StorageItem{Value: new(NodeList).Bytes()}
if err := ic.DAO.PutStorageItem(s.ContractID, []byte{byte(r)}, si); err != nil {
return err
}
}
s.oracleNodes.Store(keys.PublicKeys(nil))
s.rolesChangedFlag.Store(true)
return nil
}
@ -99,15 +101,17 @@ func (s *Designate) OnPersistEnd(d dao.DAO) error {
return nil
}
var ns NodeList
err := getSerializableFromDAO(s.ContractID, d, []byte{byte(RoleOracle)}, &ns)
nodeKeys, height, err := s.GetDesignatedByRole(d, RoleOracle, math.MaxUint32)
if err != nil {
return err
}
s.oracleNodes.Store(keys.PublicKeys(ns))
script, _ := smartcontract.CreateMajorityMultiSigRedeemScript(keys.PublicKeys(ns).Copy())
s.oracleHash.Store(hash.Hash160(script))
od := &oraclesData{
nodes: nodeKeys,
addr: oracleHashFromNodes(nodeKeys),
height: height,
}
s.oracles.Store(od)
s.rolesChangedFlag.Store(false)
return nil
}
@ -122,7 +126,15 @@ func (s *Designate) getDesignatedByRole(ic *interop.Context, args []stackitem.It
if !ok {
panic(ErrInvalidRole)
}
pubs, err := s.GetDesignatedByRole(ic.DAO, r)
ind, err := args[1].TryInteger()
if err != nil || !ind.IsUint64() {
panic(ErrInvalidIndex)
}
index := ind.Uint64()
if index > uint64(ic.Chain.BlockHeight()+1) {
panic(ErrInvalidIndex)
}
pubs, _, err := s.GetDesignatedByRole(ic.DAO, r, uint32(index))
if err != nil {
panic(err)
}
@ -134,17 +146,72 @@ func (s *Designate) rolesChanged() bool {
return rc == nil || rc.(bool)
}
// GetDesignatedByRole returns nodes for role r.
func (s *Designate) GetDesignatedByRole(d dao.DAO, r Role) (keys.PublicKeys, error) {
func oracleHashFromNodes(nodes keys.PublicKeys) util.Uint160 {
if len(nodes) == 0 {
return util.Uint160{}
}
script, _ := smartcontract.CreateMajorityMultiSigRedeemScript(nodes.Copy())
return hash.Hash160(script)
}
func (s *Designate) getLastDesignatedHash(d dao.DAO, r Role) (util.Uint160, error) {
if !isValidRole(r) {
return nil, ErrInvalidRole
return util.Uint160{}, ErrInvalidRole
}
if r == RoleOracle && !s.rolesChanged() {
return s.oracleNodes.Load().(keys.PublicKeys), nil
odVal := s.oracles.Load()
if odVal != nil {
od := odVal.(*oraclesData)
return od.addr, nil
}
}
nodes, _, err := s.GetDesignatedByRole(d, r, math.MaxUint32)
if err != nil {
return util.Uint160{}, err
}
// We only have hashing defined for oracles now.
return oracleHashFromNodes(nodes), nil
}
// GetDesignatedByRole returns nodes for role r.
func (s *Designate) GetDesignatedByRole(d dao.DAO, r Role, index uint32) (keys.PublicKeys, uint32, error) {
if !isValidRole(r) {
return nil, 0, ErrInvalidRole
}
if r == RoleOracle && !s.rolesChanged() {
odVal := s.oracles.Load()
if odVal != nil {
od := odVal.(*oraclesData)
if od.height <= index {
return od.nodes, od.height, nil
}
}
}
kvs, err := d.GetStorageItemsWithPrefix(s.ContractID, []byte{byte(r)})
if err != nil {
return nil, 0, err
}
var ns NodeList
err := getSerializableFromDAO(s.ContractID, d, []byte{byte(r)}, &ns)
return keys.PublicKeys(ns), err
var bestIndex uint32
var resSi *state.StorageItem
for k, si := range kvs {
if len(k) < 4 {
continue
}
siInd := binary.BigEndian.Uint32([]byte(k))
if (resSi == nil || siInd > bestIndex) && siInd <= index {
bestIndex = siInd
resSi = si
}
}
if resSi != nil {
reader := io.NewBinReaderFromBuf(resSi.Value)
ns.DecodeBinary(reader)
if reader.Err != nil {
return nil, 0, reader.Err
}
}
return keys.PublicKeys(ns), bestIndex, err
}
func (s *Designate) designateAsRole(ic *interop.Context, args []stackitem.Item) stackitem.Item {
@ -180,11 +247,21 @@ func (s *Designate) DesignateAsRole(ic *interop.Context, r Role, pubs keys.Publi
if ok, err := runtime.CheckHashedWitness(ic, h); err != nil || !ok {
return ErrInvalidWitness
}
if ic.Block == nil {
return ErrNoBlock
}
var key = make([]byte, 5)
key[0] = byte(r)
binary.BigEndian.PutUint32(key[1:], ic.Block.Index+1)
si := ic.DAO.GetStorageItem(s.ContractID, key)
if si != nil {
return ErrAlreadyDesignated
}
sort.Sort(pubs)
s.rolesChangedFlag.Store(true)
si := &state.StorageItem{Value: NodeList(pubs).Bytes()}
return ic.DAO.PutStorageItem(s.ContractID, []byte{byte(r)}, si)
si = &state.StorageItem{Value: NodeList(pubs).Bytes()}
return ic.DAO.PutStorageItem(s.ContractID, key, si)
}
func getRole(item stackitem.Item) (Role, bool) {

12
pkg/core/native/oracle.go
View file

@ -4,6 +4,7 @@ import (
"encoding/binary"
"errors"
"fmt"
"math"
"math/big"
"github.com/nspcc-dev/neo-go/pkg/core/dao"
@ -367,17 +368,14 @@ func (o *Oracle) PutRequestInternal(id uint64, req *state.OracleRequest, d dao.D
}
// GetScriptHash returns script hash or oracle nodes.
func (o *Oracle) GetScriptHash() (util.Uint160, error) {
h := o.Desig.oracleHash.Load()
if h == nil {
return util.Uint160{}, storage.ErrKeyNotFound
}
return h.(util.Uint160), nil
func (o *Oracle) GetScriptHash(d dao.DAO) (util.Uint160, error) {
return o.Desig.getLastDesignatedHash(d, RoleOracle)
}
// GetOracleNodes returns public keys of oracle nodes.
func (o *Oracle) GetOracleNodes(d dao.DAO) (keys.PublicKeys, error) {
return o.Desig.GetDesignatedByRole(d, RoleOracle)
nodes, _, err := o.Desig.GetDesignatedByRole(d, RoleOracle, math.MaxUint32)
return nodes, err
}
// GetRequestInternal returns request by ID and key under which it is stored.

59
pkg/core/native_designate_test.go
View file

@ -5,6 +5,7 @@ import (
"testing"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/native"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
@ -14,6 +15,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/stretchr/testify/require"
)
@ -60,6 +62,37 @@ func (bc *Blockchain) setNodesByRole(t *testing.T, ok bool, r native.Role, nodes
}
}
func (bc *Blockchain) getNodesByRole(t *testing.T, ok bool, r native.Role, index uint32, resLen int) {
w := io.NewBufBinWriter()
emit.AppCallWithOperationAndArgs(w.BinWriter, bc.contracts.Designate.Hash, "getDesignatedByRole", int64(r), int64(index))
require.NoError(t, w.Err)
tx := transaction.New(netmode.UnitTestNet, w.Bytes(), 0)
tx.NetworkFee = 10_000_000
tx.SystemFee = 10_000_000
tx.ValidUntilBlock = 100
tx.Signers = []transaction.Signer{
{
Account: testchain.MultisigScriptHash(),
Scopes: transaction.None,
},
}
require.NoError(t, signTx(bc, tx))
require.NoError(t, bc.AddBlock(bc.newBlock(tx)))
aer, err := bc.GetAppExecResult(tx.Hash())
require.NoError(t, err)
if ok {
require.Equal(t, vm.HaltState, aer.VMState)
require.Equal(t, 1, len(aer.Stack))
arrItem := aer.Stack[0]
require.Equal(t, stackitem.ArrayT, arrItem.Type())
arr := arrItem.(*stackitem.Array)
require.Equal(t, resLen, arr.Len())
} else {
require.Equal(t, vm.FaultState, aer.VMState)
}
}
func TestDesignate_DesignateAsRoleTx(t *testing.T) {
bc := newTestChain(t)
defer bc.Close()
@ -70,6 +103,11 @@ func TestDesignate_DesignateAsRoleTx(t *testing.T) {
bc.setNodesByRole(t, false, 0xFF, pubs)
bc.setNodesByRole(t, true, native.RoleOracle, pubs)
index := bc.BlockHeight() + 1
bc.getNodesByRole(t, false, 0xFF, 0, 0)
bc.getNodesByRole(t, false, native.RoleOracle, 100500, 0)
bc.getNodesByRole(t, true, native.RoleOracle, 0, 0) // returns an empty list
bc.getNodesByRole(t, true, native.RoleOracle, index, 1) // returns pubs
}
func TestDesignate_DesignateAsRole(t *testing.T) {
@ -78,16 +116,19 @@ func TestDesignate_DesignateAsRole(t *testing.T) {
des := bc.contracts.Designate
tx := transaction.New(netmode.UnitTestNet, []byte{}, 0)
ic := bc.newInteropContext(trigger.OnPersist, bc.dao, nil, tx)
bl := block.New(netmode.UnitTestNet)
bl.Index = bc.BlockHeight() + 1
ic := bc.newInteropContext(trigger.OnPersist, bc.dao, bl, tx)
ic.SpawnVM()
ic.VM.LoadScript([]byte{byte(opcode.RET)})
pubs, err := des.GetDesignatedByRole(bc.dao, 0xFF)
pubs, index, err := des.GetDesignatedByRole(bc.dao, 0xFF, 255)
require.True(t, errors.Is(err, native.ErrInvalidRole), "got: %v", err)
pubs, err = des.GetDesignatedByRole(bc.dao, native.RoleOracle)
pubs, index, err = des.GetDesignatedByRole(bc.dao, native.RoleOracle, 255)
require.NoError(t, err)
require.Equal(t, 0, len(pubs))
require.Equal(t, uint32(0), index)
err = des.DesignateAsRole(ic, native.RoleOracle, keys.PublicKeys{})
require.True(t, errors.Is(err, native.ErrEmptyNodeList), "got: %v", err)
@ -110,13 +151,15 @@ func TestDesignate_DesignateAsRole(t *testing.T) {
require.NoError(t, err)
require.NoError(t, des.OnPersistEnd(ic.DAO))
pubs, err = des.GetDesignatedByRole(ic.DAO, native.RoleOracle)
pubs, index, err = des.GetDesignatedByRole(ic.DAO, native.RoleOracle, bl.Index+1)
require.NoError(t, err)
require.Equal(t, keys.PublicKeys{pub}, pubs)
require.Equal(t, bl.Index+1, index)
pubs, err = des.GetDesignatedByRole(ic.DAO, native.RoleStateValidator)
pubs, index, err = des.GetDesignatedByRole(ic.DAO, native.RoleStateValidator, 255)
require.NoError(t, err)
require.Equal(t, 0, len(pubs))
require.Equal(t, uint32(0), index)
// Set another role.
_, err = keys.NewPrivateKey()
@ -126,11 +169,13 @@ func TestDesignate_DesignateAsRole(t *testing.T) {
require.NoError(t, err)
require.NoError(t, des.OnPersistEnd(ic.DAO))
pubs, err = des.GetDesignatedByRole(ic.DAO, native.RoleOracle)
pubs, index, err = des.GetDesignatedByRole(ic.DAO, native.RoleOracle, 255)
require.NoError(t, err)
require.Equal(t, keys.PublicKeys{pub}, pubs)
require.Equal(t, bl.Index+1, index)
pubs, err = des.GetDesignatedByRole(ic.DAO, native.RoleStateValidator)
pubs, index, err = des.GetDesignatedByRole(ic.DAO, native.RoleStateValidator, 255)
require.NoError(t, err)
require.Equal(t, keys.PublicKeys{pub1}, pubs)
require.Equal(t, bl.Index+1, index)
}

5
pkg/core/native_oracle_test.go
View file

@ -6,6 +6,7 @@ import (
"testing"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames"
"github.com/nspcc-dev/neo-go/pkg/core/native"
"github.com/nspcc-dev/neo-go/pkg/core/state"
@ -136,8 +137,10 @@ func TestOracle_Request(t *testing.T) {
pub := priv.PublicKey()
tx := transaction.New(netmode.UnitTestNet, []byte{}, 0)
bl := block.New(netmode.UnitTestNet)
bl.Index = bc.BlockHeight() + 1
setSigner(tx, testchain.CommitteeScriptHash())
ic := bc.newInteropContext(trigger.Application, bc.dao, nil, tx)
ic := bc.newInteropContext(trigger.Application, bc.dao, bl, tx)
ic.SpawnVM()
ic.VM.LoadScript([]byte{byte(opcode.RET)})
err = bc.contracts.Designate.DesignateAsRole(ic, native.RoleOracle, keys.PublicKeys{pub})