vendor: sync to latest core (#129)

13 files changed, 104 insertions, 90 deletions

diff --git a/dex/governance.go b/dex/governance.go
index bcc2cca51..199bcdc87 100644
--- a/dex/governance.go
+++ b/dex/governance.go
@@ -27,6 +27,7 @@ import (
 	dexCore "github.com/dexon-foundation/dexon-consensus/core"
 	coreCrypto "github.com/dexon-foundation/dexon-consensus/core/crypto"
 	coreEcdsa "github.com/dexon-foundation/dexon-consensus/core/crypto/ecdsa"
+	coreTypes "github.com/dexon-foundation/dexon-consensus/core/types"
 	dkgTypes "github.com/dexon-foundation/dexon-consensus/core/types/dkg"
 
 	"github.com/dexon-foundation/dexon/common"
@@ -291,3 +292,11 @@ func (d *DexconGovernance) DKGSet(round uint64) (map[string]struct{}, error) {
 	}
 	return r, nil
 }
+
+func (d *DexconGovernance) ReportForkVote(vote1, vote2 *coreTypes.Vote) {
+	// TODO: finish this.
+}
+
+func (d *DexconGovernance) ReportForkBlock(block1, block2 *coreTypes.Block) {
+	// TODO: finish this.
+}
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/common/logger.go b/vendor/github.com/dexon-foundation/dexon-consensus/common/logger.go
index 29eac3595..3328e939a 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/common/logger.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/common/logger.go
@@ -29,6 +29,7 @@ import "log"
 //           })
 type Logger interface {
 	// Info logs info level logs.
+	Trace(msg string, ctx ...interface{})
 	Debug(msg string, ctx ...interface{})
 	Info(msg string, ctx ...interface{})
 	Warn(msg string, ctx ...interface{})
@@ -38,6 +39,10 @@ type Logger interface {
 // NullLogger logs nothing.
 type NullLogger struct{}
 
+// Trace implements Logger interface.
+func (logger *NullLogger) Trace(msg string, ctx ...interface{}) {
+}
+
 // Debug implements Logger interface.
 func (logger *NullLogger) Debug(msg string, ctx ...interface{}) {
 }
@@ -66,6 +71,11 @@ func composeVargs(msg string, ctxs []interface{}) []interface{} {
 	return args
 }
 
+// Trace implements Logger interface.
+func (logger *SimpleLogger) Trace(msg string, ctx ...interface{}) {
+	log.Println(composeVargs(msg, ctx)...)
+}
+
 // Debug implements Logger interface.
 func (logger *SimpleLogger) Debug(msg string, ctx ...interface{}) {
 	log.Println(composeVargs(msg, ctx)...)
@@ -98,6 +108,11 @@ func NewCustomLogger(logger *log.Logger) *CustomLogger {
 	}
 }
 
+// Trace implements Logger interface.
+func (logger *CustomLogger) Trace(msg string, ctx ...interface{}) {
+	logger.logger.Println(composeVargs(msg, ctx)...)
+}
+
 // Debug implements Logger interface.
 func (logger *CustomLogger) Debug(msg string, ctx ...interface{}) {
 	logger.logger.Println(composeVargs(msg, ctx)...)
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/blockpool.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/blockpool.go
index fbd84f21c..4e41aa7c4 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/blockpool.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/blockpool.go
@@ -29,8 +29,8 @@ type blockPool []types.ByPosition
 
 func newBlockPool(chainNum uint32) (pool blockPool) {
 	pool = make(blockPool, chainNum)
-	for _, p := range pool {
-		heap.Init(&p)
+	for i := range pool {
+		heap.Init(&pool[i])
 	}
 	return
 }
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/configuration-chain.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/configuration-chain.go
index a4636cb7b..fbd691f73 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/configuration-chain.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/configuration-chain.go
@@ -91,6 +91,7 @@ func (cc *configurationChain) registerDKG(round uint64, threshold int) {
 	defer cc.dkgLock.Unlock()
 	if cc.dkg != nil {
 		cc.logger.Error("Previous DKG is not finished")
+		// TODO(mission): return here and fix CI failure.
 	}
 	dkgSet, err := cc.cache.GetDKGSet(round)
 	if err != nil {
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go
index faadbe9bd..0e5a1fbdb 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go
@@ -1015,8 +1015,11 @@ func (con *Consensus) pullRandomness() {
 		case <-time.After(1500 * time.Millisecond):
 			// TODO(jimmy): pulling period should be related to lambdaBA.
 			hashes := con.ccModule.pendingBlocksWithoutRandomness()
-			con.logger.Debug("Calling Network.PullRandomness", "blocks", hashes)
-			con.network.PullRandomness(hashes)
+			if len(hashes) > 0 {
+				con.logger.Debug(
+					"Calling Network.PullRandomness", "blocks", hashes)
+				con.network.PullRandomness(hashes)
+			}
 		}
 	}
 }
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go
index 20770328c..aa87e38f7 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go
@@ -144,6 +144,12 @@ type Governance interface {
 
 	// IsDKGFinal checks if DKG is final.
 	IsDKGFinal(round uint64) bool
+
+	// ReportForkVote reports a node for forking votes.
+	ReportForkVote(vote1, vote2 *types.Vote)
+
+	// ReportForkBlock reports a node for forking blocks.
+	ReportForkBlock(block1, block2 *types.Block)
 }
 
 // Ticker define the capability to tick by interval.
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/agreement.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/agreement.go
index 32ea6547a..9b351eabc 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/agreement.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/agreement.go
@@ -18,8 +18,6 @@
 package syncer
 
 import (
-	"sync"
-
 	"github.com/dexon-foundation/dexon-consensus/common"
 	"github.com/dexon-foundation/dexon-consensus/core"
 	"github.com/dexon-foundation/dexon-consensus/core/types"
@@ -29,7 +27,6 @@ import (
 // Struct agreement implements struct of BA (Byzantine Agreement) protocol
 // needed in syncer, which only receives agreement results.
 type agreement struct {
-	wg               *sync.WaitGroup
 	cache            *utils.NodeSetCache
 	inputChan        chan interface{}
 	outputChan       chan<- *types.Block
@@ -47,12 +44,10 @@ func newAgreement(
 	ch chan<- *types.Block,
 	pullChan chan<- common.Hash,
 	cache *utils.NodeSetCache,
-	wg *sync.WaitGroup,
 	logger common.Logger) *agreement {
 
 	return &agreement{
 		cache:            cache,
-		wg:               wg,
 		inputChan:        make(chan interface{}, 1000),
 		outputChan:       ch,
 		pullChan:         pullChan,
@@ -68,8 +63,6 @@ func newAgreement(
 // run starts the agreement, this does not start a new routine, go a new
 // routine explicitly in the caller.
 func (a *agreement) run() {
-	a.wg.Add(1)
-	defer a.wg.Done()
 	for {
 		select {
 		case val, ok := <-a.inputChan:
@@ -106,7 +99,7 @@ func (a *agreement) processBlock(b *types.Block) {
 func (a *agreement) processAgreementResult(r *types.AgreementResult) {
 	// Cache those results that CRS is not ready yet.
 	if _, exists := a.confirmedBlocks[r.BlockHash]; exists {
-		a.logger.Debug("agreement result already confirmed", "result", r)
+		a.logger.Trace("agreement result already confirmed", "result", r)
 		return
 	}
 	if r.Position.Round > a.latestCRSRound {
@@ -116,7 +109,7 @@ func (a *agreement) processAgreementResult(r *types.AgreementResult) {
 			a.pendings[r.Position.Round] = pendingsForRound
 		}
 		pendingsForRound[r.BlockHash] = r
-		a.logger.Debug("agreement result cached", "result", r)
+		a.logger.Trace("agreement result cached", "result", r)
 		return
 	}
 	if err := core.VerifyAgreementResult(r, a.cache); err != nil {
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/consensus.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/consensus.go
index d334bbd88..92f8fd8d0 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/consensus.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/syncer/consensus.go
@@ -262,12 +262,12 @@ func (con *Consensus) ensureAgreementOverlapRound() bool {
 		for r = range tipRoundMap {
 			break
 		}
-		con.logger.Info("check agreement round cut",
+		con.logger.Debug("check agreement round cut",
 			"tip-round", r,
 			"configs", len(con.configs))
 		if tipRoundMap[r] == con.configs[r].NumChains {
 			con.agreementRoundCut = r
-			con.logger.Debug("agreement round cut found, round", r)
+			con.logger.Info("agreement round cut found, round", r)
 			return true
 		}
 	}
@@ -416,7 +416,7 @@ func (con *Consensus) SyncBlocks(
 			"expected", tipHeight+1)
 		return false, ErrInvalidSyncingFinalizationHeight
 	}
-	con.logger.Debug("syncBlocks",
+	con.logger.Trace("syncBlocks",
 		"position", &blocks[0].Position,
 		"final height", blocks[0].Finalization.Height,
 		"len", len(blocks),
@@ -601,7 +601,7 @@ func (con *Consensus) setupConfigs(blocks []*types.Block) {
 			maxRound = b.Position.Round
 		}
 	}
-	con.logger.Info("syncer setupConfigs",
+	con.logger.Debug("syncer setupConfigs",
 		"max", maxRound,
 		"lattice", con.latticeLastRound)
 	// Get configs from governance.
@@ -623,10 +623,13 @@ func (con *Consensus) resizeByNumChains(numChains uint32) {
 			// Resize the pool of blocks.
 			con.blocks = append(con.blocks, types.ByPosition{})
 			// Resize agreement modules.
-			a := newAgreement(con.receiveChan, con.pullChan, con.nodeSetCache,
-				&con.agreementWaitGroup, con.logger)
+			a := newAgreement(con.receiveChan, con.pullChan, con.nodeSetCache, con.logger)
 			con.agreements = append(con.agreements, a)
-			go a.run()
+			con.agreementWaitGroup.Add(1)
+			go func() {
+				defer con.agreementWaitGroup.Done()
+				a.run()
+			}()
 		}
 	}
 }
@@ -734,7 +737,7 @@ func (con *Consensus) startCRSMonitor() {
 		if round == lastNotifiedRound {
 			return
 		}
-		con.logger.Info("CRS is ready", "round", round)
+		con.logger.Debug("CRS is ready", "round", round)
 		lastNotifiedRound = round
 		for _, a := range con.agreements {
 			a.inputChan <- round
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/types/block.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/types/block.go
index f42b70267..b2a8f57f8 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/types/block.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/types/block.go
@@ -24,7 +24,6 @@ import (
 	"fmt"
 	"io"
 	"sort"
-	"sync"
 	"time"
 
 	"github.com/dexon-foundation/dexon/rlp"
@@ -47,15 +46,6 @@ const (
 	VerifyInvalidBlock
 )
 
-var (
-	// blockPool is the blocks cache to reuse allocated blocks.
-	blockPool = sync.Pool{
-		New: func() interface{} {
-			return &Block{}
-		},
-	}
-)
-
 type rlpTimestamp struct {
 	time.Time
 }
@@ -133,19 +123,6 @@ type Witness struct {
 	Data   []byte `json:"data"`
 }
 
-// RecycleBlock put unused block into cache, which might be reused if
-// not garbage collected.
-func RecycleBlock(b *Block) {
-	blockPool.Put(b)
-}
-
-// NewBlock initiate a block.
-func NewBlock() (b *Block) {
-	b = blockPool.Get().(*Block)
-	b.Acks = b.Acks[:0]
-	return
-}
-
 // Block represents a single event broadcasted on the network.
 type Block struct {
 	ProposerID   NodeID              `json:"proposer_id"`
@@ -226,7 +203,7 @@ func (b *Block) String() string {
 
 // Clone returns a deep copy of a block.
 func (b *Block) Clone() (bcopy *Block) {
-	bcopy = NewBlock()
+	bcopy = &Block{}
 	bcopy.ProposerID = b.ProposerID
 	bcopy.ParentHash = b.ParentHash
 	bcopy.Hash = b.Hash
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/crypto.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/crypto.go
index 60424115e..43bbde13d 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/crypto.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/crypto.go
@@ -90,7 +90,8 @@ func VerifyBlockSignature(b *types.Block) (err error) {
 
 }
 
-func hashVote(vote *types.Vote) common.Hash {
+// HashVote generates hash of a types.Vote.
+func HashVote(vote *types.Vote) common.Hash {
 	binaryPeriod := make([]byte, 8)
 	binary.LittleEndian.PutUint64(binaryPeriod, vote.Period)
 
@@ -108,7 +109,7 @@ func hashVote(vote *types.Vote) common.Hash {
 
 // VerifyVoteSignature verifies the signature of types.Vote.
 func VerifyVoteSignature(vote *types.Vote) (bool, error) {
-	hash := hashVote(vote)
+	hash := HashVote(vote)
 	pubKey, err := crypto.SigToPub(hash, vote.Signature)
 	if err != nil {
 		return false, err
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/signer.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/signer.go
index 47bea3f3d..7694dab4e 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/signer.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/signer.go
@@ -66,7 +66,7 @@ func (s *Signer) SignBlock(b *types.Block) (err error) {
 // SignVote signs a types.Vote.
 func (s *Signer) SignVote(v *types.Vote) (err error) {
 	v.ProposerID = s.proposerID
-	v.Signature, err = s.prvKey.Sign(hashVote(v))
+	v.Signature, err = s.prvKey.Sign(HashVote(v))
 	return
 }
 
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/utils.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/utils.go
index 687d0ea22..8c9f77a69 100644
--- a/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/utils.go
+++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/utils/utils.go
@@ -15,22 +15,6 @@
 // along with the dexon-consensus library. If not, see
 // <http://www.gnu.org/licenses/>.
 
-// This file is part of the dexon-consensus library.
-//
-// The dexon-consensus library is free software: you can redistribute it
-// and/or modify it under the terms of the GNU Lesser General Public License as
-// published by the Free Software Foundation, either version 3 of the License,
-// or (at your option) any later version.
-//
-// The dexon-consensus library is distributed in the hope that it will be
-// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
-// General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the dexon-consensus library. If not, see
-// <http://www.gnu.org/licenses/>.
-
 package utils
 
 import (
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 7ca44b2c0..f2da6e117 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -139,70 +139,92 @@
 			"versionExact": "dev"
 		},
 		{
-			"checksumSHA1": "65L1yf+f0OCiLFniljqfRxVdsQA=",
+			"checksumSHA1": "ZUuiRqS6PnoNIvBmLStVQiyhkOM=",
 			"path": "github.com/dexon-foundation/dexon-consensus/common",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
-			"checksumSHA1": "Udj+vrFiUDboPRspH3S7URdKj+0=",
+			"checksumSHA1": "aqhVp5CBDq52ytHUH3HatpWhTDQ=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
 			"checksumSHA1": "v4fKR7uhoyufi6hAVO44cFEb+tY=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/blockdb",
 			"revision": "56e872f84131348adbc0861afb3554bba4a8e5db",
-			"revisionTime": "2018-12-05T06:29:54Z"
+			"revisionTime": "2018-12-05T06:29:54Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
 			"checksumSHA1": "tQSbYCu5P00lUhKsx3IbBZCuSLY=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/crypto",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
 			"checksumSHA1": "W2P7pkuJ+26BpJg03K4Y0nB5obI=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/crypto/dkg",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
 			"checksumSHA1": "6Pf6caC8LTNCI7IflFmglKYnxYo=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/crypto/ecdsa",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
 			"checksumSHA1": "PJXR1OuWwVVYrdJMK3skPr1/8ls=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/db",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
-			"checksumSHA1": "tFFonPHlve/3JqqRSopnLb6Rn2o=",
+			"checksumSHA1": "h674l/hugVujbZUy/NSeDmio3/U=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/syncer",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
-			"checksumSHA1": "Kpmnp6XIAnnSSncijzOBo77OshY=",
+			"checksumSHA1": "GRiBmU5T1LAoGHs5g1owGE1tNNo=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/types",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
 			"checksumSHA1": "rmv8uxwrqMhJAeA3RPvwYP8mFro=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/types/dkg",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
 		},
 		{
-			"checksumSHA1": "zvk7bSkUGBwMGi9j+15Ve10noyg=",
+			"checksumSHA1": "NCAEGRVPfM0jCKdrBN2yvEXkeIo=",
 			"path": "github.com/dexon-foundation/dexon-consensus/core/utils",
-			"revision": "beaef47dd5dd4b342cef3c8b26508ce3c334be06",
-			"revisionTime": "2019-01-04T06:43:20Z"
+			"revision": "af8c182a07f9bf3a7a17c938c87f4eef489bb903",
+			"revisionTime": "2019-01-05T09:58:34Z",
+			"version": "master",
+			"versionExact": "master"
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