miner: refactor getSealingBlock method (ethereum#27993)

Author: MariusVanDerWijden

miner/payload_building.go

@@ -175,10 +175,20 @@ func (w *worker) buildPayload(args *BuildPayloadArgs) (*Payload, error) {
 	// Build the initial version with no transaction included. It should be fast
 	// enough to run. The empty payload can at least make sure there is something
 	// to deliver for not missing slot.
-	empty := w.getSealingBlock(args.Parent, args.Timestamp, args.FeeRecipient, args.Random, args.Withdrawals, true)
+	emptyParams := &generateParams{
+		timestamp:   args.Timestamp,
+		forceTime:   true,
+		parentHash:  args.Parent,
+		coinbase:    args.FeeRecipient,
+		random:      args.Random,
+		withdrawals: args.Withdrawals,
+		noTxs:       true,
+	}
+	empty := w.getSealingBlock(emptyParams)
 	if empty.err != nil {
 		return nil, empty.err
 	}
+
 	// Construct a payload object for return.
 	payload := newPayload(empty.block, args.Id())
 
@@ -195,11 +205,21 @@ func (w *worker) buildPayload(args *BuildPayloadArgs) (*Payload, error) {
 		// by the timestamp parameter.
 		endTimer := time.NewTimer(time.Second * 12)
 
+		fullParams := &generateParams{
+			timestamp:   args.Timestamp,
+			forceTime:   true,
+			parentHash:  args.Parent,
+			coinbase:    args.FeeRecipient,
+			random:      args.Random,
+			withdrawals: args.Withdrawals,
+			noTxs:       false,
+		}
+
 		for {
 			select {
 			case <-timer.C:
 				start := time.Now()
-				r := w.getSealingBlock(args.Parent, args.Timestamp, args.FeeRecipient, args.Random, args.Withdrawals, false)
+				r := w.getSealingBlock(fullParams)
 				if r.err == nil {
 					payload.update(r, time.Since(start))
 				}

miner/worker.go

@@ -1106,17 +1106,9 @@ func (w *worker) commit(env *environment, interval func(), update bool, start ti
 // getSealingBlock generates the sealing block based on the given parameters.
 // The generation result will be passed back via the given channel no matter
 // the generation itself succeeds or not.
-func (w *worker) getSealingBlock(parent common.Hash, timestamp uint64, coinbase common.Address, random common.Hash, withdrawals types.Withdrawals, noTxs bool) *newPayloadResult {
+func (w *worker) getSealingBlock(params *generateParams) *newPayloadResult {
 	req := &getWorkReq{
-		params: &generateParams{
-			timestamp:   timestamp,
-			forceTime:   true,
-			parentHash:  parent,
-			coinbase:    coinbase,
-			random:      random,
-			withdrawals: withdrawals,
-			noTxs:       noTxs,
-		},
+		params: params,
 		result: make(chan *newPayloadResult, 1),
 	}
 	select {

miner/worker_test.go

@@ -452,7 +452,15 @@ func testGetSealingWork(t *testing.T, chainConfig *params.ChainConfig, engine co
 
 	// This API should work even when the automatic sealing is not enabled
 	for _, c := range cases {
-		r := w.getSealingBlock(c.parent, timestamp, c.coinbase, c.random, nil, false)
+		r := w.getSealingBlock(&generateParams{
+			parentHash:  c.parent,
+			timestamp:   timestamp,
+			coinbase:    c.coinbase,
+			random:      c.random,
+			withdrawals: nil,
+			noTxs:       false,
+			forceTime:   true,
+		})
 		if c.expectErr {
 			if r.err == nil {
 				t.Error("Expect error but get nil")
@@ -468,7 +476,15 @@ func testGetSealingWork(t *testing.T, chainConfig *params.ChainConfig, engine co
 	// This API should work even when the automatic sealing is enabled
 	w.start()
 	for _, c := range cases {
-		r := w.getSealingBlock(c.parent, timestamp, c.coinbase, c.random, nil, false)
+		r := w.getSealingBlock(&generateParams{
+			parentHash:  c.parent,
+			timestamp:   timestamp,
+			coinbase:    c.coinbase,
+			random:      c.random,
+			withdrawals: nil,
+			noTxs:       false,
+			forceTime:   true,
+		})
 		if c.expectErr {
 			if r.err == nil {
 				t.Error("Expect error but get nil")