frostfs-contract/subnet/subnet_contract.go
Pavel Karpy 18b5e56727 [#174] subnet: Add AddNode method
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2021-11-25 13:02:25 +03:00

274 lines
7 KiB
Go

package subnet
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/iterator"
"github.com/nspcc-dev/neo-go/pkg/interop/native/management"
"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
"github.com/nspcc-dev/neo-go/pkg/interop/storage"
"github.com/nspcc-dev/neo-go/pkg/interop/util"
"github.com/nspcc-dev/neofs-contract/common"
)
const (
// ErrInvalidSubnetID is thrown when subnet id is not a slice of 4 bytes.
ErrInvalidSubnetID = "invalid subnet ID"
// ErrInvalidOwner is thrown when owner has invalid format.
ErrInvalidOwner = "invalid owner"
// ErrInvalidAdmin is thrown when admin has invalid format.
ErrInvalidAdmin = "invalid administrator"
// ErrAlreadyExists is thrown when id already exists.
ErrAlreadyExists = "subnet id already exists"
// ErrSubNotExist is thrown when id doesn't exist.
ErrSubNotExist = "subnet id doesn't exist"
// ErrNodeAdmNotExist is thrown when node admin is not found.
ErrNodeAdmNotExist = "node admin not found"
// ErrAccessDenied is thrown when operation is denied for caller.
ErrAccessDenied = "access denied"
errCheckWitnessFailed = "owner witness check failed"
ownerPrefix = 'o'
nodeAdminPrefix = 'a'
clientAdminPrefix = 'm'
nodePrefix = 'n'
user = 'u'
infoPrefix = 'i'
notaryDisabledKey = 'z'
)
// _deploy function sets up initial list of inner ring public keys.
func _deploy(data interface{}, isUpdate bool) {
if isUpdate {
return
}
args := data.(struct {
notaryDisabled bool
})
ctx := storage.GetContext()
storage.Put(ctx, []byte{notaryDisabledKey}, args.notaryDisabled)
}
// Update method updates contract source code and manifest. Can be invoked
// only by committee.
func Update(script []byte, manifest []byte, data interface{}) {
if !common.HasUpdateAccess() {
panic("only committee can update contract")
}
contract.Call(interop.Hash160(management.Hash), "update", contract.All, script, manifest, data)
runtime.Log("subnet contract updated")
}
// Put creates new subnet with the specified owner and info.
func Put(id []byte, ownerKey interop.PublicKey, info []byte) {
if len(id) != 4 {
panic("put: " + ErrInvalidSubnetID)
}
if len(ownerKey) != interop.PublicKeyCompressedLen {
panic("put: " + ErrInvalidOwner)
}
ctx := storage.GetContext()
stKey := append([]byte{ownerPrefix}, id...)
if storage.Get(ctx, stKey) != nil {
panic("put: " + ErrAlreadyExists)
}
notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
if notaryDisabled {
alphabet := common.AlphabetNodes()
nodeKey := common.InnerRingInvoker(alphabet)
if len(nodeKey) == 0 {
if !runtime.CheckWitness(ownerKey) {
panic("put: witness check failed")
}
runtime.Notify("SubnetPut", id, ownerKey, info)
return
}
threshold := len(alphabet)*2/3 + 1
id := common.InvokeID([]interface{}{ownerKey, info}, []byte("put"))
n := common.Vote(ctx, id, nodeKey)
if n < threshold {
return
}
common.RemoveVotes(ctx, id)
} else {
if !runtime.CheckWitness(ownerKey) {
panic("put: " + errCheckWitnessFailed)
}
multiaddr := common.AlphabetAddress()
if !runtime.CheckWitness(multiaddr) {
panic("put: alphabet witness check failed")
}
}
storage.Put(ctx, stKey, ownerKey)
stKey[0] = infoPrefix
storage.Put(ctx, stKey, info)
}
// Get returns info about subnet with the specified id.
func Get(id []byte) []byte {
ctx := storage.GetReadOnlyContext()
key := append([]byte{infoPrefix}, id...)
raw := storage.Get(ctx, key)
if raw == nil {
panic("get: " + ErrSubNotExist)
}
return raw.([]byte)
}
// Delete deletes subnet with the specified id.
func Delete(id []byte) {
ctx := storage.GetContext()
key := append([]byte{ownerPrefix}, id...)
raw := storage.Get(ctx, key)
if raw == nil {
panic("delete:" + ErrSubNotExist)
}
owner := raw.([]byte)
if !runtime.CheckWitness(owner) {
panic("delete: " + errCheckWitnessFailed)
}
storage.Delete(ctx, key)
key[0] = infoPrefix
storage.Delete(ctx, key)
runtime.Notify("SubnetDelete", id)
}
// AddNodeAdmin adds new node administrator to the specified subnetwork.
func AddNodeAdmin(subnetID []byte, adminKey interop.PublicKey) {
if len(adminKey) != interop.PublicKeyCompressedLen {
panic("addNodeAdmin: " + ErrInvalidAdmin)
}
ctx := storage.GetContext()
stKey := append([]byte{ownerPrefix}, subnetID...)
rawOwner := storage.Get(ctx, stKey)
if rawOwner == nil {
panic("addNodeAdmin: " + ErrSubNotExist)
}
owner := rawOwner.([]byte)
if !runtime.CheckWitness(owner) {
panic("addNodeAdmin: " + errCheckWitnessFailed)
}
stKey[0] = nodeAdminPrefix
if keyInList(ctx, adminKey, stKey) {
panic("addNodeAdmin: node admin has already been added")
}
storage.Put(ctx, append(stKey, adminKey...), []byte{1})
}
// RemoveNodeAdmin removes node administrator from the specified subnetwork.
// Must be called by subnet owner only.
func RemoveNodeAdmin(subnetID []byte, adminKey interop.PublicKey) {
if len(adminKey) != interop.PublicKeyCompressedLen {
panic("removeNodeAdmin: " + ErrInvalidAdmin)
}
ctx := storage.GetContext()
stOwnerKey := append([]byte{ownerPrefix}, subnetID...)
rawOwner := storage.Get(ctx, stOwnerKey)
if rawOwner == nil {
panic("removeNodeAdmin: " + ErrSubNotExist)
}
owner := rawOwner.([]byte)
if !runtime.CheckWitness(owner) {
panic("removeNodeAdmin: " + errCheckWitnessFailed)
}
stOwnerKey[0] = nodeAdminPrefix
stNodeAdmKey := append(stOwnerKey, adminKey...)
if storage.Get(ctx, stNodeAdmKey) == nil {
panic("removeNodeAdmin: " + ErrNodeAdmNotExist)
}
storage.Delete(ctx, stNodeAdmKey)
}
// AddNode adds node to the specified subnetwork.
// Must be called by subnet's owner or node administrator
// only.
func AddNode(subnetID []byte, node interop.PublicKey) {
if len(node) != interop.PublicKeyCompressedLen {
panic("addNode: " + ErrInvalidAdmin)
}
ctx := storage.GetContext()
stKey := append([]byte{ownerPrefix}, subnetID...)
prefixLen := len(stKey)
rawOwner := storage.Get(ctx, stKey)
if rawOwner == nil {
panic("addNode: " + ErrSubNotExist)
}
owner := rawOwner.([]byte)
if !runtime.CheckWitness(owner) {
var hasAccess bool
stKey[0] = nodeAdminPrefix
iter := storage.Find(ctx, stKey, storage.KeysOnly)
for iterator.Next(iter) {
key := iterator.Value(iter).([]byte)
if runtime.CheckWitness(key[prefixLen:]) {
hasAccess = true
break
}
}
if !hasAccess {
panic("addNode: " + ErrAccessDenied)
}
}
stKey[0] = nodePrefix
if keyInList(ctx, node, stKey) {
panic("addNode: node has already been added")
}
storage.Put(ctx, append(stKey, node...), []byte{1})
}
// Version returns version of the contract.
func Version() int {
return common.Version
}
func keyInList(ctx storage.Context, searchedKey interop.PublicKey, prefix []byte) bool {
prefixLen := len(prefix)
iter := storage.Find(ctx, prefix, storage.KeysOnly)
for iterator.Next(iter) {
key := iterator.Value(iter).([]byte)
if util.Equals(string(key[prefixLen:]), string(searchedKey)) {
return true
}
}
return false
}