Reintroduce artificial delay on block generator

dusk-network · Jul 28, 2022 · 62f406a · 62f406a
1 parent 398f63f
commit 62f406a
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Showing 3 changed files with 13 additions and 6 deletions.
diff --git a/harness/engine/profiles.go b/harness/engine/profiles.go
@@ -64,6 +64,7 @@ func Profile1(index int, node *DuskNode, consensusKeysPath string) {
 	// viper.Set("mempool.preallocTxs", "100")
 	viper.Set("mempool.poolType", "diskpool")
 	viper.Set("mempool.diskpoolDir", node.Dir+"/mempool.db")
+	viper.Set("mempool.extractionDelaySecs", "3")
 
 	viper.Set("mempool.maxInvItems", "10000")
 	viper.Set("mempool.propagateTimeout", "100ms")

diff --git a/pkg/config/groups.go b/pkg/config/groups.go
@@ -137,6 +137,8 @@ type mempoolConfiguration struct {
 
 	// Enables mempool updates at startup
 	Updates updates
+
+	ExtractionDelaySecs uint32
 }
 
 type updates struct {

diff --git a/pkg/core/consensus/blockgenerator/candidate/blockgenerator.go b/pkg/core/consensus/blockgenerator/candidate/blockgenerator.go
@@ -128,9 +128,14 @@ func (bg *generator) execute(ctx context.Context, txs []transactions.ContractCal
 }
 
 // fetchOrTimeout will keep trying to FetchMempoolTxs() until either
-// we get some txs or or the timeout expires.
-func (bg *generator) FetchOrTimeout(keys [][]byte) ([]transactions.ContractCall, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
+// we get some txs or the timeout expires.
+func (bg *generator) fetchOrTimeout(keys [][]byte) ([]transactions.ContractCall, error) {
+	delay := config.Get().Mempool.ExtractionDelaySecs
+	if delay == 0 {
+		return bg.FetchMempoolTxs(keys)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(delay)*time.Second)
 	defer cancel()
 
 	tick := time.NewTicker(500 * time.Millisecond)
@@ -139,8 +144,7 @@ func (bg *generator) FetchOrTimeout(keys [][]byte) ([]transactions.ContractCall,
 	for {
 		select {
 		case <-ctx.Done():
-			txs, err := bg.FetchMempoolTxs(keys)
-			return txs, err
+			return bg.FetchMempoolTxs(keys)
 		case <-tick.C:
 			txs, err := bg.FetchMempoolTxs(keys)
 			if err != nil {
@@ -157,7 +161,7 @@ func (bg *generator) FetchOrTimeout(keys [][]byte) ([]transactions.ContractCall,
 // GenerateBlock generates a candidate block, by constructing the header and filling it
 // with transactions from the mempool.
 func (bg *generator) GenerateBlock(round uint64, seed, prevBlockHash []byte, prevBlockTimestamp int64, keys [][]byte) (*block.Block, error) {
-	txs, err := bg.FetchMempoolTxs(keys)
+	txs, err := bg.fetchOrTimeout(keys)
 	if err != nil {
 		return nil, err
 	}