eth/gasprice, internal/ethapi, miner: minor feehistory fixes

eth/gasprice/feehistory_test.go

@@ -18,6 +18,7 @@ package gasprice
 
 import (
 	"context"
+	"errors"
 	"math/big"
 	"testing"
 
@@ -37,7 +38,7 @@ func TestFeeHistory(t *testing.T) {
 	}{
 		{false, 0, 0, 10, 30, nil, 21, 10, nil},
 		{false, 0, 0, 10, 30, []float64{0, 10}, 21, 10, nil},
-		{false, 0, 0, 10, 30, []float64{20, 10}, 0, 0, errInvalidPercentiles},
+		{false, 0, 0, 10, 30, []float64{20, 10}, 0, 0, errInvalidPercentile},
 		{false, 0, 0, 1000000000, 30, nil, 0, 31, nil},
 		{false, 0, 0, 1000000000, rpc.LatestBlockNumber, nil, 0, 33, nil},
 		{false, 0, 0, 10, 40, nil, 0, 0, errRequestBeyondHead},
@@ -81,7 +82,7 @@ func TestFeeHistory(t *testing.T) {
 		if len(ratio) != c.expCount {
 			t.Fatalf("Test case %d: gasUsedRatio array length mismatch, want %d, got %d", i, c.expCount, len(ratio))
 		}
-		if err != c.expErr {
+		if err != c.expErr && !errors.Is(err, c.expErr) {
 			t.Fatalf("Test case %d: error mismatch, want %v, got %v", i, c.expErr, err)
 		}
 	}

internal/ethapi/api.go

@@ -80,28 +80,28 @@ func (s *PublicEthereumAPI) MaxPriorityFeePerGas(ctx context.Context) (*hexutil.
 	return (*hexutil.Big)(tipcap), err
 }
 
-type feeHistoryResults struct {
-	FirstBlock   rpc.BlockNumber
-	Reward       [][]*hexutil.Big
-	BaseFee      []*hexutil.Big
-	GasUsedRatio []float64
+type feeHistoryResult struct {
+	OldestBlock  rpc.BlockNumber  `json:"oldestBlock"`
+	Reward       [][]*hexutil.Big `json:"reward,omitempty"`
+	BaseFee      []*hexutil.Big   `json:"baseFeePerGas,omitempty"`
+	GasUsedRatio []float64        `json:"gasUsedRatio"`
 }
 
-func (s *PublicEthereumAPI) FeeHistory(ctx context.Context, blockCount int, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (feeHistoryResults, error) {
-	firstBlock, reward, baseFee, gasUsedRatio, err := s.b.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles)
+func (s *PublicEthereumAPI) FeeHistory(ctx context.Context, blockCount int, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (*feeHistoryResult, error) {
+	oldest, reward, baseFee, gasUsed, err := s.b.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles)
 	if err != nil {
-		return feeHistoryResults{}, err
+		return nil, err
 	}
-	results := feeHistoryResults{
-		FirstBlock:   firstBlock,
-		GasUsedRatio: gasUsedRatio,
+	results := &feeHistoryResult{
+		OldestBlock:  oldest,
+		GasUsedRatio: gasUsed,
 	}
 	if reward != nil {
 		results.Reward = make([][]*hexutil.Big, len(reward))
-		for j, w := range reward {
-			results.Reward[j] = make([]*hexutil.Big, len(w))
-			for i, v := range w {
-				results.Reward[j][i] = (*hexutil.Big)(v)
+		for i, w := range reward {
+			results.Reward[i] = make([]*hexutil.Big, len(w))
+			for j, v := range w {
+				results.Reward[i][j] = (*hexutil.Big)(v)
 			}
 		}
 	}

miner/worker.go

@@ -162,7 +162,7 @@ type worker struct {
 	pendingMu    sync.RWMutex
 	pendingTasks map[common.Hash]*task
 
-	snapshotMu       sync.RWMutex // The lock used to protect the block snapshot and state snapshot
+	snapshotMu       sync.RWMutex // The lock used to protect the snapshots below
 	snapshotBlock    *types.Block
 	snapshotReceipts types.Receipts
 	snapshotState    *state.StateDB
@@ -745,7 +745,7 @@ func (w *worker) updateSnapshot() {
 		w.current.receipts,
 		trie.NewStackTrie(nil),
 	)
-	w.snapshotReceipts = w.current.receipts
+	w.snapshotReceipts = copyReceipts(w.current.receipts)
 	w.snapshotState = w.current.state.Copy()
 }