erigon-pulse/cmd/erigon-cl/core/checkpoint.go
2022-12-11 15:12:38 +01:00

47 lines
1.2 KiB
Go

package core
import (
"context"
"fmt"
"io"
"net/http"
"github.com/ledgerwatch/erigon/cl/cltypes"
"github.com/ledgerwatch/erigon/cmd/erigon-cl/core/state"
"github.com/ledgerwatch/log/v3"
)
func RetrieveBeaconState(ctx context.Context, uri string) (*state.BeaconState, error) {
log.Info("[Checkpoint Sync] Requesting beacon state", "uri", uri)
req, err := http.NewRequestWithContext(ctx, http.MethodGet, uri, nil)
if err != nil {
return nil, err
}
req.Header.Set("Accept", "application/octet-stream")
if err != nil {
return nil, fmt.Errorf("checkpoint sync failed %s", err)
}
r, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
defer func() {
err = r.Body.Close()
}()
if r.StatusCode != http.StatusOK {
return nil, fmt.Errorf("checkpoint sync failed, bad status code %d", r.StatusCode)
}
marshaled, err := io.ReadAll(r.Body)
if err != nil {
return nil, fmt.Errorf("checkpoint sync failed %s", err)
}
beaconState := &cltypes.BeaconStateBellatrix{}
err = beaconState.UnmarshalSSZ(marshaled)
if err != nil {
return nil, fmt.Errorf("checkpoint sync failed %s", err)
}
return state.FromBellatrixState(beaconState), nil
}