From c7dd1a1b622eba3e28944f9d00827b7c5fe57c4a Mon Sep 17 00:00:00 2001
From: Wei-Ning Huang <w@dexon.org>
Date: Thu, 24 Jan 2019 15:05:24 +0800
Subject: consensus: dexcon: snapshot round height when finalizing block (#170)

Instead of having BP to send a tx to register the round height, just
modify the state when finalizing block.
---
 dex/app_test.go                  |  6 ------
 dex/downloader/testchain_test.go |  9 ---------
 dex/governance.go                | 14 --------------
 3 files changed, 29 deletions(-)

(limited to 'dex')

diff --git a/dex/app_test.go b/dex/app_test.go
index 34b31d3d3..d2837b174 100644
--- a/dex/app_test.go
+++ b/dex/app_test.go
@@ -513,12 +513,6 @@ func TestNumChainsChange(t *testing.T) {
 			Height:    1,
 		})
 
-	// Snapshot round on round 1 and height 2.
-	input, err = abiObject.Pack("snapshotRound", big.NewInt(1), big.NewInt(1))
-	if err != nil {
-		t.Fatalf("abiObject pack error: %v", err)
-	}
-
 	block, err = prepareConfirmedBlockWithTxAndData(dex, key, [][]byte{input}, 1)
 	if err != nil {
 		t.Fatalf("prepare block error: %v", err)
diff --git a/dex/downloader/testchain_test.go b/dex/downloader/testchain_test.go
index d96ebcfbf..73d4863a5 100644
--- a/dex/downloader/testchain_test.go
+++ b/dex/downloader/testchain_test.go
@@ -201,15 +201,6 @@ func (tc *testChain) generate(n int, seed byte, parent *types.Block, nodes *dexc
 
 		half := roundInterval / 2
 		switch i % roundInterval {
-		case 0:
-			if round > 0 {
-				node := testNodes.Nodes(round)[0]
-				data, err := vm.PackNotifyRoundHeight(round, uint64(i))
-				if err != nil {
-					panic(err)
-				}
-				addTx(block, node, data)
-			}
 		case half:
 			// Sign current CRS to geneate the next round CRS and propose it.
 			testNodes.SignCRS(round)
diff --git a/dex/governance.go b/dex/governance.go
index e9ea1f89c..1b037cf2b 100644
--- a/dex/governance.go
+++ b/dex/governance.go
@@ -145,20 +145,6 @@ func (d *DexconGovernance) NodeSet(round uint64) []coreCrypto.PublicKey {
 	return pks
 }
 
-// NotifyRoundHeight register the mapping between round and height.
-func (d *DexconGovernance) NotifyRoundHeight(targetRound, consensusHeight uint64) {
-	data, err := vm.PackNotifyRoundHeight(targetRound, consensusHeight)
-	if err != nil {
-		log.Error("failed to pack snapshotRound input", "err", err)
-		return
-	}
-
-	err = d.sendGovTx(context.Background(), data)
-	if err != nil {
-		log.Error("failed to send snapshotRound tx", "err", err)
-	}
-}
-
 // AddDKGComplaint adds a DKGComplaint.
 func (d *DexconGovernance) AddDKGComplaint(round uint64, complaint *dkgTypes.Complaint) {
 	data, err := vm.PackAddDKGComplaint(round, complaint)
-- 
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