frostfs-contract/reputation/reputation_contract.go

114 lines
2.4 KiB
Go
Raw Normal View History

package reputationcontract
import (
"github.com/nspcc-dev/neo-go/pkg/interop"
"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/native/std"
"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 (
version = 1
)
func Init(owner interop.Hash160) {
ctx := storage.GetContext()
if !common.HasUpdateAccess(ctx) {
panic("only owner can reinitialize contract")
}
storage.Put(ctx, common.OwnerKey, owner)
runtime.Log("reputation contract initialized")
}
func Migrate(script []byte, manifest []byte) bool {
ctx := storage.GetReadOnlyContext()
if !common.HasUpdateAccess(ctx) {
runtime.Log("only owner can update contract")
return false
}
management.Update(script, manifest)
runtime.Log("reputation contract updated")
return true
}
func Put(epoch int, peerID []byte, value []byte) {
ctx := storage.GetContext()
multiaddr := common.AlphabetAddress()
if !runtime.CheckWitness(multiaddr) {
runtime.Notify("reputationPut", epoch, peerID, value)
return
}
id := storageID(epoch, peerID)
reputationValues := GetByID(id)
reputationValues = append(reputationValues, value)
rawValues := std.Serialize(reputationValues)
storage.Put(ctx, id, rawValues)
}
func Get(epoch int, peerID []byte) [][]byte {
id := storageID(epoch, peerID)
return GetByID(id)
}
func GetByID(id []byte) [][]byte {
ctx := storage.GetReadOnlyContext()
data := storage.Get(ctx, id)
if data == nil {
return [][]byte{}
}
return std.Deserialize(data.([]byte)).([][]byte)
}
// ListByEpoch returns list of IDs that may be used to get reputation data
// via GetByID method.
func ListByEpoch(epoch int) [][]byte {
ctx := storage.GetReadOnlyContext()
var buf interface{} = epoch
it := storage.Find(ctx, buf.([]byte), storage.KeysOnly)
var result [][]byte
ignore := [][]byte{
[]byte(common.OwnerKey),
}
loop:
for iterator.Next(it) {
key := iterator.Value(it).([]byte) // iterator MUST BE `storage.KeysOnly`
for _, ignoreKey := range ignore {
if common.BytesEqual(key, ignoreKey) {
continue loop
}
}
result = append(result, key)
}
return result
}
func Version() int {
return version
}
func storageID(epoch int, peerID []byte) []byte {
var buf interface{} = epoch
return append(buf.([]byte), peerID...)
}