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, 15 insertions, 11 deletions

diff --git a/eth/api_backend.go b/eth/api_backend.go
index ee5b51cf5..708e5afaf 100644
--- a/eth/api_backend.go
+++ b/eth/api_backend.go
@@ -59,44 +59,44 @@ func (b *EthAPIBackend) SetHead(number uint64) {
 	b.eth.blockchain.SetHead(number)
 }
 
-func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) {
+func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
 	// Pending block is only known by the miner
-	if blockNr == rpc.PendingBlockNumber {
+	if number == rpc.PendingBlockNumber {
 		block := b.eth.miner.PendingBlock()
 		return block.Header(), nil
 	}
 	// Otherwise resolve and return the block
-	if blockNr == rpc.LatestBlockNumber {
+	if number == rpc.LatestBlockNumber {
 		return b.eth.blockchain.CurrentBlock().Header(), nil
 	}
-	return b.eth.blockchain.GetHeaderByNumber(uint64(blockNr)), nil
+	return b.eth.blockchain.GetHeaderByNumber(uint64(number)), nil
 }
 
 func (b *EthAPIBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
 	return b.eth.blockchain.GetHeaderByHash(hash), nil
 }
 
-func (b *EthAPIBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) {
+func (b *EthAPIBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
 	// Pending block is only known by the miner
-	if blockNr == rpc.PendingBlockNumber {
+	if number == rpc.PendingBlockNumber {
 		block := b.eth.miner.PendingBlock()
 		return block, nil
 	}
 	// Otherwise resolve and return the block
-	if blockNr == rpc.LatestBlockNumber {
+	if number == rpc.LatestBlockNumber {
 		return b.eth.blockchain.CurrentBlock(), nil
 	}
-	return b.eth.blockchain.GetBlockByNumber(uint64(blockNr)), nil
+	return b.eth.blockchain.GetBlockByNumber(uint64(number)), nil
 }
 
-func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
+func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
 	// Pending state is only known by the miner
-	if blockNr == rpc.PendingBlockNumber {
+	if number == rpc.PendingBlockNumber {
 		block, state := b.eth.miner.Pending()
 		return state, block.Header(), nil
 	}
 	// Otherwise resolve the block number and return its state
-	header, err := b.HeaderByNumber(ctx, blockNr)
+	header, err := b.HeaderByNumber(ctx, number)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -107,6 +107,10 @@ func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.
 	return stateDb, header, err
 }
 
+func (b *EthAPIBackend) GetHeader(ctx context.Context, hash common.Hash) *types.Header {
+	return b.eth.blockchain.GetHeaderByHash(hash)
+}
+
 func (b *EthAPIBackend) GetBlock(ctx context.Context, hash common.Hash) (*types.Block, error) {
 	return b.eth.blockchain.GetBlockByHash(hash), nil
 }