From 4945ae1427399d9a0f6b3561306f50f360011613 Mon Sep 17 00:00:00 2001
From: StephenButtolph <stephen@avalabs.org>
Date: Wed, 12 Aug 2020 22:50:17 -0400
Subject: read blocks with caching

---
 plugin/evm/block.go |  6 +-----
 plugin/evm/vm.go    | 13 +++++--------
 2 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/plugin/evm/block.go b/plugin/evm/block.go
index eaa78a5..2912d2c 100644
--- a/plugin/evm/block.go
+++ b/plugin/evm/block.go
@@ -50,11 +50,7 @@ func (b *Block) Status() choices.Status {
 // Parent implements the snowman.Block interface
 func (b *Block) Parent() snowman.Block {
 	parentID := ids.NewID(b.ethBlock.ParentHash())
-	block := &Block{
-		id:       parentID,
-		ethBlock: b.vm.getCachedBlock(parentID),
-		vm:       b.vm,
-	}
+	block := b.vm.getBlock(parentID)
 	b.vm.ctx.Log.Verbo("Parent(%s) has status: %s", block.ID(), block.Status())
 	return block
 }
diff --git a/plugin/evm/vm.go b/plugin/evm/vm.go
index c22d9d1..6c96870 100644
--- a/plugin/evm/vm.go
+++ b/plugin/evm/vm.go
@@ -422,10 +422,6 @@ func (vm *VM) updateStatus(blockID ids.ID, status choices.Status) {
 	vm.blockStatusCache.Put(blockID, status)
 }
 
-func (vm *VM) getCachedBlock(blockID ids.ID) *types.Block {
-	return vm.chain.GetBlockByHash(blockID.Key())
-}
-
 func (vm *VM) tryBlockGen() error {
 	vm.bdlock.Lock()
 	defer vm.bdlock.Unlock()
@@ -474,10 +470,11 @@ func (vm *VM) getCachedStatus(blockID ids.ID) choices.Status {
 	if statusIntf, ok := vm.blockStatusCache.Get(blockID); ok {
 		status = statusIntf.(choices.Status)
 	} else {
-		blk := vm.chain.GetBlockByHash(blockID.Key())
-		if blk == nil {
+		wrappedBlk := vm.getBlock(blockID)
+		if wrappedBlk == nil {
 			return choices.Unknown
 		}
+		blk := wrappedBlk.ethBlock
 		acceptedBlk := vm.lastAccepted.ethBlock
 
 		// TODO: There must be a better way of doing this.
@@ -488,7 +485,7 @@ func (vm *VM) getCachedStatus(blockID ids.ID) choices.Status {
 			highBlock, lowBlock = lowBlock, highBlock
 		}
 		for highBlock.Number().Cmp(lowBlock.Number()) > 0 {
-			highBlock = vm.chain.GetBlockByHash(highBlock.ParentHash())
+			highBlock = vm.getBlock(ids.NewID(highBlock.ParentHash())).ethBlock
 		}
 
 		if highBlock.Hash() == lowBlock.Hash() { // on the same branch
@@ -508,7 +505,7 @@ func (vm *VM) getBlock(id ids.ID) *Block {
 	if blockIntf, ok := vm.blockCache.Get(id); ok {
 		return blockIntf.(*Block)
 	}
-	ethBlock := vm.getCachedBlock(id)
+	ethBlock := vm.chain.GetBlockByHash(id.Key())
 	if ethBlock == nil {
 		return nil
 	}
-- 
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