eth, internal/ethapi: make RPC block miner field show block sealer correctly (#23312)

Makes the RPC block return the POA sealer for clique blocks on the 'miner' field (was previously zeroes)

eth/api.go

@@ -342,7 +342,7 @@ func (api *PrivateDebugAPI) GetBadBlocks(ctx context.Context) ([]*BadBlockArgs,
 		} else {
 			blockRlp = fmt.Sprintf("0x%x", rlpBytes)
 		}
-		if blockJSON, err = ethapi.RPCMarshalBlock(block, true, true); err != nil {
+		if blockJSON, err = ethapi.RPCMarshalBlock(block, true, true, api.eth.engine); err != nil {
 			blockJSON = map[string]interface{}{"error": err.Error()}
 		}
 		results = append(results, &BadBlockArgs{

internal/ethapi/api.go

@@ -32,6 +32,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/consensus/clique"
 	"github.com/ethereum/go-ethereum/consensus/ethash"
 	"github.com/ethereum/go-ethereum/consensus/misc"
@@ -1175,7 +1176,8 @@ func FormatLogs(logs []vm.StructLog) []StructLogRes {
 }
 
 // RPCMarshalHeader converts the given header to the RPC output .
-func RPCMarshalHeader(head *types.Header) map[string]interface{} {
+func RPCMarshalHeader(head *types.Header, engine consensus.Engine) map[string]interface{} {
+	miner, _ := engine.Author(head)
 	result := map[string]interface{}{
 		"number":           (*hexutil.Big)(head.Number),
 		"hash":             head.Hash(),
@@ -1185,7 +1187,7 @@ func RPCMarshalHeader(head *types.Header) map[string]interface{} {
 		"sha3Uncles":       head.UncleHash,
 		"logsBloom":        head.Bloom,
 		"stateRoot":        head.Root,
-		"miner":            head.Coinbase,
+		"miner":            miner,
 		"difficulty":       (*hexutil.Big)(head.Difficulty),
 		"extraData":        hexutil.Bytes(head.Extra),
 		"size":             hexutil.Uint64(head.Size()),
@@ -1206,8 +1208,8 @@ func RPCMarshalHeader(head *types.Header) map[string]interface{} {
 // RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
 // returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
 // transaction hashes.
-func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
-	fields := RPCMarshalHeader(block.Header())
+func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool, engine consensus.Engine) (map[string]interface{}, error) {
+	fields := RPCMarshalHeader(block.Header(), engine)
 	fields["size"] = hexutil.Uint64(block.Size())
 
 	if inclTx {
@@ -1242,7 +1244,7 @@ func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]i
 // rpcMarshalHeader uses the generalized output filler, then adds the total difficulty field, which requires
 // a `PublicBlockchainAPI`.
 func (s *PublicBlockChainAPI) rpcMarshalHeader(ctx context.Context, header *types.Header) map[string]interface{} {
-	fields := RPCMarshalHeader(header)
+	fields := RPCMarshalHeader(header, s.b.Engine())
 	fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(ctx, header.Hash()))
 	return fields
 }
@@ -1250,7 +1252,7 @@ func (s *PublicBlockChainAPI) rpcMarshalHeader(ctx context.Context, header *type
 // rpcMarshalBlock uses the generalized output filler, then adds the total difficulty field, which requires
 // a `PublicBlockchainAPI`.
 func (s *PublicBlockChainAPI) rpcMarshalBlock(ctx context.Context, b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
-	fields, err := RPCMarshalBlock(b, inclTx, fullTx)
+	fields, err := RPCMarshalBlock(b, inclTx, fullTx, s.b.Engine())
 	if err != nil {
 		return nil, err
 	}