mirror of
https://github.com/wealdtech/ethdo.git
synced 2026-01-07 21:24:01 -05:00
84 lines
2.6 KiB
Go
84 lines
2.6 KiB
Go
// Copyright © 2022 Weald Technology Trading
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"context"
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"encoding/hex"
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"fmt"
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"strconv"
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"strings"
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"time"
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consensusclient "github.com/attestantio/go-eth2-client"
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"github.com/attestantio/go-eth2-client/api"
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"github.com/attestantio/go-eth2-client/spec/phase0"
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"github.com/pkg/errors"
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e2wtypes "github.com/wealdtech/go-eth2-wallet-types/v2"
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)
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// ValidatorIndex obtains the index of a validator.
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func ValidatorIndex(ctx context.Context, client consensusclient.Service, account string, pubKey string, index string) (phase0.ValidatorIndex, error) {
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switch {
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case account != "":
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_, account, err := WalletAndAccountFromPath(ctx, account)
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if err != nil {
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return 0, errors.Wrap(err, "failed to obtain account")
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}
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return accountToIndex(ctx, account, client)
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case pubKey != "":
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pubKeyBytes, err := hex.DecodeString(strings.TrimPrefix(pubKey, "0x"))
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if err != nil {
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return 0, errors.Wrap(err, fmt.Sprintf("failed to decode public key %s", pubKey))
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}
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account, err := NewScratchAccount(nil, pubKeyBytes)
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if err != nil {
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return 0, errors.Wrap(err, fmt.Sprintf("invalid public key %s", pubKey))
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}
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return accountToIndex(ctx, account, client)
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case index != "":
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val, err := strconv.ParseUint(index, 10, 64)
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if err != nil {
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return 0, err
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}
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return phase0.ValidatorIndex(val), nil
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default:
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return 0, errors.New("no validator")
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}
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}
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func accountToIndex(ctx context.Context, account e2wtypes.Account, client consensusclient.Service) (phase0.ValidatorIndex, error) {
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pubKey, err := BestPublicKey(account)
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if err != nil {
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return 0, err
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}
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pubKeys := make([]phase0.BLSPubKey, 1)
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copy(pubKeys[0][:], pubKey.Marshal())
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validatorsResponse, err := client.(consensusclient.ValidatorsProvider).Validators(ctx, &api.ValidatorsOpts{
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State: "head",
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PubKeys: pubKeys,
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})
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if err != nil {
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return 0, err
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}
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for index := range validatorsResponse.Data {
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return index, nil
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}
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return 0, errors.New("validator not found")
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}
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