[vms/proposervm] Update Build Heuristic (#2348)

Co-authored-by: Alberto Benegiamo <alberto.benegiamo@gmail.com>

Author: patrick-ogrady

vms/proposervm/batched_vm_test.go

@@ -225,7 +225,7 @@ func TestGetAncestorsPostForkOnly(t *testing.T) {
 	// prepare build of next block
 	require.NoError(builtBlk1.Verify(context.Background()))
 	require.NoError(proRemoteVM.SetPreference(context.Background(), builtBlk1.ID()))
-	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxDelay))
+	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxBuildDelay))
 
 	coreBlk2 := &snowman.TestBlock{
 		TestDecidable: choices.TestDecidable{
@@ -235,7 +235,7 @@ func TestGetAncestorsPostForkOnly(t *testing.T) {
 		BytesV:     []byte{2},
 		ParentV:    coreBlk1.ID(),
 		HeightV:    coreBlk1.Height() + 1,
-		TimestampV: coreBlk1.Timestamp().Add(proposer.MaxDelay),
+		TimestampV: coreBlk1.Timestamp().Add(proposer.MaxVerifyDelay),
 	}
 	coreVM.BuildBlockF = func(context.Context) (snowman.Block, error) {
 		return coreBlk2, nil
@@ -246,7 +246,7 @@ func TestGetAncestorsPostForkOnly(t *testing.T) {
 	// prepare build of next block
 	require.NoError(builtBlk2.Verify(context.Background()))
 	require.NoError(proRemoteVM.SetPreference(context.Background(), builtBlk2.ID()))
-	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxDelay))
+	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxBuildDelay))
 
 	coreBlk3 := &snowman.TestBlock{
 		TestDecidable: choices.TestDecidable{
@@ -431,7 +431,7 @@ func TestGetAncestorsAtSnomanPlusPlusFork(t *testing.T) {
 		BytesV:     []byte{3},
 		ParentV:    coreBlk2.ID(),
 		HeightV:    coreBlk2.Height() + 1,
-		TimestampV: postForkTime.Add(proposer.MaxDelay),
+		TimestampV: postForkTime.Add(proposer.MaxVerifyDelay),
 	}
 	coreVM.BuildBlockF = func(context.Context) (snowman.Block, error) {
 		return coreBlk3, nil
@@ -443,7 +443,7 @@ func TestGetAncestorsAtSnomanPlusPlusFork(t *testing.T) {
 	// prepare build of next block
 	require.NoError(builtBlk3.Verify(context.Background()))
 	require.NoError(proRemoteVM.SetPreference(context.Background(), builtBlk3.ID()))
-	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxDelay))
+	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxBuildDelay))
 
 	coreBlk4 := &snowman.TestBlock{
 		TestDecidable: choices.TestDecidable{
@@ -704,7 +704,7 @@ func TestBatchedParseBlockPostForkOnly(t *testing.T) {
 	// prepare build of next block
 	require.NoError(builtBlk1.Verify(context.Background()))
 	require.NoError(proRemoteVM.SetPreference(context.Background(), builtBlk1.ID()))
-	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxDelay))
+	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxBuildDelay))
 
 	coreBlk2 := &snowman.TestBlock{
 		TestDecidable: choices.TestDecidable{
@@ -714,7 +714,7 @@ func TestBatchedParseBlockPostForkOnly(t *testing.T) {
 		BytesV:     []byte{2},
 		ParentV:    coreBlk1.ID(),
 		HeightV:    coreBlk1.Height() + 1,
-		TimestampV: coreBlk1.Timestamp().Add(proposer.MaxDelay),
+		TimestampV: coreBlk1.Timestamp().Add(proposer.MaxVerifyDelay),
 	}
 	coreVM.BuildBlockF = func(context.Context) (snowman.Block, error) {
 		return coreBlk2, nil
@@ -725,7 +725,7 @@ func TestBatchedParseBlockPostForkOnly(t *testing.T) {
 	// prepare build of next block
 	require.NoError(builtBlk2.Verify(context.Background()))
 	require.NoError(proRemoteVM.SetPreference(context.Background(), builtBlk2.ID()))
-	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxDelay))
+	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxBuildDelay))
 
 	coreBlk3 := &snowman.TestBlock{
 		TestDecidable: choices.TestDecidable{
@@ -867,7 +867,7 @@ func TestBatchedParseBlockAtSnomanPlusPlusFork(t *testing.T) {
 		BytesV:     []byte{3},
 		ParentV:    coreBlk2.ID(),
 		HeightV:    coreBlk2.Height() + 1,
-		TimestampV: postForkTime.Add(proposer.MaxDelay),
+		TimestampV: postForkTime.Add(proposer.MaxVerifyDelay),
 	}
 	coreVM.BuildBlockF = func(context.Context) (snowman.Block, error) {
 		return coreBlk3, nil
@@ -879,7 +879,7 @@ func TestBatchedParseBlockAtSnomanPlusPlusFork(t *testing.T) {
 	// prepare build of next block
 	require.NoError(builtBlk3.Verify(context.Background()))
 	require.NoError(proRemoteVM.SetPreference(context.Background(), builtBlk3.ID()))
-	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxDelay))
+	proRemoteVM.Set(proRemoteVM.Time().Add(proposer.MaxBuildDelay))
 
 	coreBlk4 := &snowman.TestBlock{
 		TestDecidable: choices.TestDecidable{

vms/proposervm/block.go

@@ -144,7 +144,7 @@ func (p *postForkCommonComponents) Verify(
 
 		childHeight := child.Height()
 		proposerID := child.Proposer()
-		minDelay, err := p.vm.Windower.Delay(ctx, childHeight, parentPChainHeight, proposerID)
+		minDelay, err := p.vm.Windower.Delay(ctx, childHeight, parentPChainHeight, proposerID, proposer.MaxVerifyWindows)
 		if err != nil {
 			return err
 		}
@@ -155,7 +155,7 @@ func (p *postForkCommonComponents) Verify(
 		}
 
 		// Verify the signature of the node
-		shouldHaveProposer := delay < proposer.MaxDelay
+		shouldHaveProposer := delay < proposer.MaxVerifyDelay
 		if err := child.SignedBlock.Verify(shouldHaveProposer, p.vm.ctx.ChainID); err != nil {
 			return err
 		}
@@ -203,10 +203,10 @@ func (p *postForkCommonComponents) buildChild(
 	}
 
 	delay := newTimestamp.Sub(parentTimestamp)
-	if delay < proposer.MaxDelay {
+	if delay < proposer.MaxBuildDelay {
 		parentHeight := p.innerBlk.Height()
 		proposerID := p.vm.ctx.NodeID
-		minDelay, err := p.vm.Windower.Delay(ctx, parentHeight+1, parentPChainHeight, proposerID)
+		minDelay, err := p.vm.Windower.Delay(ctx, parentHeight+1, parentPChainHeight, proposerID, proposer.MaxBuildWindows)
 		if err != nil {
 			p.vm.ctx.Log.Error("unexpected build block failure",
 				zap.String("reason", "failed to calculate required timestamp delay"),
@@ -249,7 +249,7 @@ func (p *postForkCommonComponents) buildChild(
 
 	// Build the child
 	var statelessChild block.SignedBlock
-	if delay >= proposer.MaxDelay {
+	if delay >= proposer.MaxVerifyDelay {
 		statelessChild, err = block.BuildUnsigned(
 			parentID,
 			newTimestamp,