frostfs-contract/subnet/subnet_contract.go
Evgenii Stratonikov ed6f90c180 [#122] subnet: implement put method
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
2021-11-22 10:30:35 +03:00

117 lines
3.1 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/native/management"
"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
"github.com/nspcc-dev/neo-go/pkg/interop/storage"
"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"
// ErrAlreadyExists is thrown when id already exists.
ErrAlreadyExists = "subnet id already exists"
// ErrNotExist is thrown when id doesn't exist.
ErrNotExist = "subnet id doesn't exist"
ownerPrefix = 'o'
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)
}
// 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", 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: owner witness check failed")
}
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.GetContext()
key := append([]byte{infoPrefix}, id...)
raw := storage.Get(ctx, key)
if raw == nil {
panic("get: " + ErrNotExist)
}
return raw.([]byte)
}
// 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")
}
// Version returns version of the contract.
func Version() int {
return common.Version
}