/
synccommitteecontribution.go
70 lines (61 loc) · 2.36 KB
/
synccommitteecontribution.go
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// Copyright © 2021 - 2024 Attestant Limited.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package http
import (
"bytes"
"context"
"errors"
"fmt"
client "github.com/attestantio/go-eth2-client"
"github.com/attestantio/go-eth2-client/api"
"github.com/attestantio/go-eth2-client/spec/altair"
)
// SyncCommitteeContribution provides a sync committee contribution.
func (s *Service) SyncCommitteeContribution(ctx context.Context,
opts *api.SyncCommitteeContributionOpts,
) (
*api.Response[*altair.SyncCommitteeContribution],
error,
) {
if err := s.assertIsActive(ctx); err != nil {
return nil, err
}
if opts == nil {
return nil, client.ErrNoOptions
}
if opts.BeaconBlockRoot.IsZero() {
return nil, errors.Join(errors.New("no beacon block root specified"), client.ErrInvalidOptions)
}
endpoint := "/eth/v1/validator/sync_committee_contribution"
query := fmt.Sprintf("slot=%d&subcommittee_index=%d&beacon_block_root=%#x", opts.Slot, opts.SubcommitteeIndex, opts.BeaconBlockRoot)
httpResponse, err := s.get(ctx, endpoint, query, &opts.Common)
if err != nil {
return nil, err
}
data, metadata, err := decodeJSONResponse(bytes.NewReader(httpResponse.body), altair.SyncCommitteeContribution{})
if err != nil {
return nil, err
}
// Confirm the contribution is for the requested slot.
if data.Slot != opts.Slot {
return nil, errors.Join(fmt.Errorf("sync committee contiribution for slot %d; expected %d", data.Slot, opts.Slot), client.ErrInconsistentResult)
}
// Confirm the beacon block root is correct.
if !bytes.Equal(data.BeaconBlockRoot[:], opts.BeaconBlockRoot[:]) {
return nil, errors.Join(fmt.Errorf("sync committee proposal has beacon bock root %#x; expected %#x", data.BeaconBlockRoot[:], opts.BeaconBlockRoot[:]), client.ErrInconsistentResult)
}
return &api.Response[*altair.SyncCommitteeContribution]{
Metadata: metadata,
Data: &data,
}, nil
}