mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-26 05:17:22 +00:00
110 lines
3.4 KiB
Go
110 lines
3.4 KiB
Go
package powchain
|
|
|
|
import (
|
|
"context"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/pkg/errors"
|
|
"go.opencensus.io/trace"
|
|
)
|
|
|
|
// BlockExists returns true if the block exists, it's height and any possible error encountered.
|
|
func (s *Service) BlockExists(ctx context.Context, hash common.Hash) (bool, *big.Int, error) {
|
|
ctx, span := trace.StartSpan(ctx, "beacon-chain.web3service.BlockExists")
|
|
defer span.End()
|
|
|
|
if exists, blkInfo, err := s.blockCache.BlockInfoByHash(hash); exists || err != nil {
|
|
if err != nil {
|
|
return false, nil, err
|
|
}
|
|
span.AddAttributes(trace.BoolAttribute("blockCacheHit", true))
|
|
return true, blkInfo.Number, nil
|
|
}
|
|
span.AddAttributes(trace.BoolAttribute("blockCacheHit", false))
|
|
block, err := s.blockFetcher.BlockByHash(ctx, hash)
|
|
if err != nil {
|
|
return false, big.NewInt(0), errors.Wrap(err, "could not query block with given hash")
|
|
}
|
|
|
|
if err := s.blockCache.AddBlock(block); err != nil {
|
|
return false, big.NewInt(0), err
|
|
}
|
|
|
|
return true, block.Number(), nil
|
|
}
|
|
|
|
// BlockHashByHeight returns the block hash of the block at the given height.
|
|
func (s *Service) BlockHashByHeight(ctx context.Context, height *big.Int) (common.Hash, error) {
|
|
ctx, span := trace.StartSpan(ctx, "beacon-chain.web3service.BlockHashByHeight")
|
|
defer span.End()
|
|
|
|
if exists, blkInfo, err := s.blockCache.BlockInfoByHeight(height); exists || err != nil {
|
|
if err != nil {
|
|
return [32]byte{}, err
|
|
}
|
|
span.AddAttributes(trace.BoolAttribute("blockCacheHit", true))
|
|
return blkInfo.Hash, nil
|
|
}
|
|
span.AddAttributes(trace.BoolAttribute("blockCacheHit", false))
|
|
block, err := s.blockFetcher.BlockByNumber(ctx, height)
|
|
if err != nil {
|
|
return [32]byte{}, errors.Wrap(err, "could not query block with given height")
|
|
}
|
|
if err := s.blockCache.AddBlock(block); err != nil {
|
|
return [32]byte{}, err
|
|
}
|
|
return block.Hash(), nil
|
|
}
|
|
|
|
// BlockTimeByHeight fetches an eth1.0 block timestamp by its height.
|
|
func (s *Service) BlockTimeByHeight(ctx context.Context, height *big.Int) (uint64, error) {
|
|
ctx, span := trace.StartSpan(ctx, "beacon-chain.web3service.BlockTimeByHeight")
|
|
defer span.End()
|
|
block, err := s.blockFetcher.BlockByNumber(ctx, height)
|
|
if err != nil {
|
|
return 0, errors.Wrap(err, "could not query block with given height")
|
|
}
|
|
return block.Time(), nil
|
|
}
|
|
|
|
// BlockNumberByTimestamp returns the most recent block number up to a given timestamp.
|
|
// This is a naive implementation that will use O(ETH1_FOLLOW_DISTANCE) calls to cache
|
|
// or ETH1. This is called for multiple times but only changes every
|
|
// SlotsPerEth1VotingPeriod (1024 slots) so the whole method should be cached.
|
|
func (s *Service) BlockNumberByTimestamp(ctx context.Context, time uint64) (*big.Int, error) {
|
|
ctx, span := trace.StartSpan(ctx, "beacon-chain.web3service.BlockByTimestamp")
|
|
defer span.End()
|
|
|
|
head, err := s.blockFetcher.BlockByNumber(ctx, nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for bn := head.Number(); ; bn = big.NewInt(0).Sub(bn, big.NewInt(1)) {
|
|
if ctx.Err() != nil {
|
|
return nil, ctx.Err()
|
|
}
|
|
|
|
exists, info, err := s.blockCache.BlockInfoByHeight(bn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if !exists {
|
|
blk, err := s.blockFetcher.BlockByNumber(ctx, bn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err := s.blockCache.AddBlock(blk); err != nil {
|
|
return nil, err
|
|
}
|
|
info = blockToBlockInfo(blk)
|
|
}
|
|
|
|
if info.Time <= time {
|
|
return info.Number, nil
|
|
}
|
|
}
|
|
}
|