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feat: implement method HeaderByHash and HeaderByNumberOrHash #93

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feat: implement method HeaderByHash and HeaderByNumberOrHash #93

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34 changes: 32 additions & 2 deletions ethereum/rpc/blocks.go
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Original file line number Diff line number Diff line change
Expand Up @@ -73,13 +73,43 @@ func (b *BackendImpl) HeaderByNumber(_ context.Context, number rpc.BlockNumber)
}

func (b *BackendImpl) HeaderByHash(_ context.Context, hash common.Hash) (*ethtypes.Header, error) {
return nil, nil
resBlock, err := b.CosmosBlockByHash(hash)
if err != nil || resBlock == nil {
return nil, fmt.Errorf("failed to get block by hash %s, %w", hash.Hex(), err)
}

blockRes, err := b.CosmosBlockResultByNumber(&resBlock.Block.Height)
if err != nil {
return nil, fmt.Errorf("block result not found for height %d", resBlock.Block.Height)
}

bloom, err := b.blockBloom(blockRes)
if err != nil {
b.logger.Debug("HeaderByNumber BlockBloom failed", "height", resBlock.Block.Height)
}

baseFee, err := b.BaseFee(blockRes)
if err != nil {
// handle the error for pruned node.
b.logger.Error("failed to fetch Base Fee from prunned block. Check node prunning configuration", "height", resBlock.Block.Height, "error", err)
}

ethHeader := rpctypes.EthHeaderFromTendermint(resBlock.Block.Header, bloom, baseFee)
return ethHeader, nil
}

func (b *BackendImpl) HeaderByNumberOrHash(ctx context.Context,
blockNrOrHash rpc.BlockNumberOrHash,
) (*ethtypes.Header, error) {
return nil, errors.New("HeaderByNumberOrHash is not implemented")
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.HeaderByNumber(ctx, blockNr)
}

if hash, ok := blockNrOrHash.Hash(); ok {
return b.HeaderByHash(ctx, hash)
}

return nil, errors.New("invalid arguments; neither block nor hash specified")
}

func (b *BackendImpl) CurrentHeader() *ethtypes.Header {
Expand Down