eth, internal, les: add getHeaderBy* APIs (#19669)

* eth, interal, les: add getHeaderBy* APIs

* internal: address the comment

* eth, internal, les: getHeader nits, missing TD, console callable

1 files changed, 13 insertions, 9 deletions

diff --git a/les/api_backend.go b/les/api_backend.go
index 6de15e7bd..f1ac8ed5a 100644
--- a/les/api_backend.go
+++ b/les/api_backend.go
@@ -58,27 +58,27 @@ func (b *LesApiBackend) SetHead(number uint64) {
 	b.eth.blockchain.SetHead(number)
 }
 
-func (b *LesApiBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) {
-	if blockNr == rpc.LatestBlockNumber || blockNr == rpc.PendingBlockNumber {
+func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
+	if number == rpc.LatestBlockNumber || number == rpc.PendingBlockNumber {
 		return b.eth.blockchain.CurrentHeader(), nil
 	}
-	return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(blockNr))
+	return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(number))
 }
 
 func (b *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
 	return b.eth.blockchain.GetHeaderByHash(hash), nil
 }
 
-func (b *LesApiBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) {
-	header, err := b.HeaderByNumber(ctx, blockNr)
+func (b *LesApiBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
+	header, err := b.HeaderByNumber(ctx, number)
 	if header == nil || err != nil {
 		return nil, err
 	}
 	return b.GetBlock(ctx, header.Hash())
 }
 
-func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
-	header, err := b.HeaderByNumber(ctx, blockNr)
+func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
+	header, err := b.HeaderByNumber(ctx, number)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -88,8 +88,12 @@ func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.
 	return light.NewState(ctx, header, b.eth.odr), header, nil
 }
 
-func (b *LesApiBackend) GetBlock(ctx context.Context, blockHash common.Hash) (*types.Block, error) {
-	return b.eth.blockchain.GetBlockByHash(ctx, blockHash)
+func (b *LesApiBackend) GetHeader(ctx context.Context, hash common.Hash) *types.Header {
+	return b.eth.blockchain.GetHeaderByHash(hash)
+}
+
+func (b *LesApiBackend) GetBlock(ctx context.Context, hash common.Hash) (*types.Block, error) {
+	return b.eth.blockchain.GetBlockByHash(ctx, hash)
 }
 
 func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {