mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-26 13:18:57 +00:00
59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
package powchain
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import (
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"context"
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"fmt"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"go.opencensus.io/trace"
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)
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// BlockExists returns true if the block exists, it's height and any possible error encountered.
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func (w *Web3Service) BlockExists(ctx context.Context, hash common.Hash) (bool, *big.Int, error) {
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ctx, span := trace.StartSpan(ctx, "beacon-chain.web3service.BlockExists")
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defer span.End()
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if exists, blkInfo, err := w.blockCache.BlockInfoByHash(hash); exists || err != nil {
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if err != nil {
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return false, nil, err
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}
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span.AddAttributes(trace.BoolAttribute("blockCacheHit", true))
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return true, blkInfo.Number, nil
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}
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span.AddAttributes(trace.BoolAttribute("blockCacheHit", false))
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block, err := w.blockFetcher.BlockByHash(ctx, hash)
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if err != nil {
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return false, big.NewInt(0), fmt.Errorf("could not query block with given hash: %v", err)
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}
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if err := w.blockCache.AddBlock(block); err != nil {
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return false, big.NewInt(0), err
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}
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return true, block.Number(), nil
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}
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// BlockHashByHeight returns the block hash of the block at the given height.
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func (w *Web3Service) BlockHashByHeight(ctx context.Context, height *big.Int) (common.Hash, error) {
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ctx, span := trace.StartSpan(ctx, "beacon-chain.web3service.BlockHashByHeight")
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defer span.End()
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if exists, blkInfo, err := w.blockCache.BlockInfoByHeight(height); exists || err != nil {
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if err != nil {
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return [32]byte{}, err
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}
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span.AddAttributes(trace.BoolAttribute("blockCacheHit", true))
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return blkInfo.Hash, nil
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}
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span.AddAttributes(trace.BoolAttribute("blockCacheHit", false))
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block, err := w.blockFetcher.BlockByNumber(w.ctx, height)
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if err != nil {
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return [32]byte{}, fmt.Errorf("could not query block with given height: %v", err)
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}
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if err := w.blockCache.AddBlock(block); err != nil {
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return [32]byte{}, err
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}
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return block.Hash(), nil
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}
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