mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2025-01-09 03:01:19 +00:00
4c47756aed
* remove validation package * structs cleanup * merge with apimiddleware removal * more validation and Bls capitalization * builder test fix * use strconv for uint->str conversions * use DecodeHexWithLength * use exact param names * rename http package to httputil * change conversions to fmt.Sprintf * handle query paramsd and route variables * spans and receiver name * split structs, move bytes helper * missing ok check * fix reference to indexed failure * errors fixup * add godoc to helper * fix BLS casing and chainhead ref * review * fix import in tests * gzl
71 lines
2.4 KiB
Go
71 lines
2.4 KiB
Go
package beacon
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import (
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"fmt"
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"log"
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"net/http"
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"strconv"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/helpers"
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"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
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"github.com/prysmaticlabs/prysm/v4/config/params"
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"github.com/prysmaticlabs/prysm/v4/network/httputil"
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"github.com/prysmaticlabs/prysm/v4/time/slots"
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"go.opencensus.io/trace"
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)
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// GetWeakSubjectivity computes the starting epoch of the current weak subjectivity period, and then also
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// determines the best block root and state root to use for a Checkpoint Sync starting from that point.
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func (s *Server) GetWeakSubjectivity(w http.ResponseWriter, r *http.Request) {
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ctx, span := trace.StartSpan(r.Context(), "beacon.GetWeakSubjectivity")
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defer span.End()
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if shared.IsSyncing(ctx, w, s.SyncChecker, s.HeadFetcher, s.TimeFetcher, s.OptimisticModeFetcher) {
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return
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}
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hs, err := s.HeadFetcher.HeadStateReadOnly(ctx)
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if err != nil {
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httputil.HandleError(w, "Could not get head state: "+err.Error(), http.StatusInternalServerError)
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return
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}
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wsEpoch, err := helpers.LatestWeakSubjectivityEpoch(ctx, hs, params.BeaconConfig())
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if err != nil {
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httputil.HandleError(w, "Could not get weak subjectivity epoch: "+err.Error(), http.StatusInternalServerError)
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return
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}
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wsSlot, err := slots.EpochStart(wsEpoch)
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if err != nil {
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httputil.HandleError(w, "Could not get weak subjectivity slot: "+err.Error(), http.StatusInternalServerError)
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return
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}
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cbr, err := s.CanonicalHistory.BlockRootForSlot(ctx, wsSlot)
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if err != nil {
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httputil.HandleError(w, fmt.Sprintf("Could not find highest block below slot %d: %s", wsSlot, err.Error()), http.StatusInternalServerError)
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return
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}
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cb, err := s.BeaconDB.Block(ctx, cbr)
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if err != nil {
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httputil.HandleError(
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w,
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fmt.Sprintf("Block with root %#x from slot index %d not found in db: %s", cbr, wsSlot, err.Error()),
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http.StatusInternalServerError,
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)
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return
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}
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stateRoot := cb.Block().StateRoot()
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log.Printf("Weak subjectivity checkpoint reported as epoch=%d, block root=%#x, state root=%#x", wsEpoch, cbr, stateRoot)
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resp := &GetWeakSubjectivityResponse{
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Data: &WeakSubjectivityData{
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WsCheckpoint: &shared.Checkpoint{
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Epoch: strconv.FormatUint(uint64(wsEpoch), 10),
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Root: hexutil.Encode(cbr[:]),
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},
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StateRoot: hexutil.Encode(stateRoot[:]),
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},
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}
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httputil.WriteJson(w, resp)
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}
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