release: create v0.19.3-rc1 branch

build/version.go

@@ -47,11 +47,11 @@ const (
 	AppMinor uint = 19
 
 	// AppPatch defines the application patch for this binary.
-	AppPatch uint = 2
+	AppPatch uint = 3
 
 	// AppPreRelease MUST only contain characters from semanticAlphabet per
 	// the semantic versioning spec.
-	AppPreRelease = "beta"
+	AppPreRelease = "beta.rc1"
 )
 
 func init() {

config.go

@@ -719,6 +719,7 @@ func DefaultConfig() Config {
 			AnnouncementConf:      discovery.DefaultProofMatureDelta,
 			MsgRateBytes:          discovery.DefaultMsgBytesPerSecond,
 			MsgBurstBytes:         discovery.DefaultMsgBytesBurst,
+			FilterConcurrency:     discovery.DefaultFilterConcurrency,
 		},
 		Invoices: &lncfg.Invoices{
 			HoldExpiryDelta: lncfg.DefaultHoldInvoiceExpiryDelta,

contractcourt/anchor_resolver.go

@@ -202,7 +202,10 @@ func (c *anchorResolver) Launch() error {
 	// an output that we want to sweep only if it is economical to do so.
 	//
 	// An exclusive group is not necessary anymore, because we know that
-	// this is the only anchor that can be swept.
+	// this is the only anchor that can be swept. However, to avoid this
+	// anchor input being group with other inputs, we still keep the
+	// exclusive group here such that the anchor will be swept
+	// independently.
 	//
 	// We also clear the parent tx information for cpfp, because the
 	// commitment tx is confirmed.
@@ -222,6 +225,8 @@ func (c *anchorResolver) Launch() error {
 		c.broadcastHeight, nil,
 	)
 
+	exclusiveGroup := c.ShortChanID.ToUint64()
+
 	resultChan, err := c.Sweeper.SweepInput(
 		&anchorInput,
 		sweep.Params{
@@ -233,6 +238,10 @@ func (c *anchorResolver) Launch() error {
 			// There's no rush to sweep the anchor, so we use a nil
 			// deadline here.
 			DeadlineHeight: fn.None[int32](),
+
+			// Use the chan id as the exclusive group. This prevents
+			// any of the anchors from being batched together.
+			ExclusiveGroup: &exclusiveGroup,
 		},
 	)
 

contractcourt/chain_arbitrator.go

@@ -270,6 +270,11 @@ type ChainArbitrator struct {
 	// beat is the current best known blockbeat.
 	beat chainio.Blockbeat
 
+	// resolvedChan is used to signal that the given channel outpoint has
+	// been resolved onchain. Once received, chain arbitrator will perform
+	// cleanups.
+	resolvedChan chan wire.OutPoint
+
 	quit chan struct{}
 
 	wg sync.WaitGroup
@@ -286,6 +291,7 @@ func NewChainArbitrator(cfg ChainArbitratorConfig,
 		activeWatchers: make(map[wire.OutPoint]*chainWatcher),
 		chanSource:     db,
 		quit:           make(chan struct{}),
+		resolvedChan:   make(chan wire.OutPoint),
 	}
 
 	// Mount the block consumer.
@@ -459,6 +465,9 @@ func newActiveChannelArbitrator(channel *channeldb.OpenChannel,
 				channel.ShortChanID(), htlc,
 			)
 		},
+		NotifyChannelResolved: func() {
+			c.notifyChannelResolved(chanPoint)
+		},
 	}
 
 	// The final component needed is an arbitrator log that the arbitrator
@@ -474,14 +483,6 @@ func newActiveChannelArbitrator(channel *channeldb.OpenChannel,
 		return nil, err
 	}
 
-	arbCfg.MarkChannelResolved = func() error {
-		if c.cfg.NotifyFullyResolvedChannel != nil {
-			c.cfg.NotifyFullyResolvedChannel(chanPoint)
-		}
-
-		return c.ResolveContract(chanPoint)
-	}
-
 	// Finally, we'll need to construct a series of htlc Sets based on all
 	// currently known valid commitments.
 	htlcSets := make(map[HtlcSetKey]htlcSet)
@@ -578,6 +579,17 @@ func (c *ChainArbitrator) Start(beat chainio.Blockbeat) error {
 	// Set the current beat.
 	c.beat = beat
 
+	// Start the goroutine which listens for signals to mark the channel as
+	// resolved.
+	//
+	// NOTE: We must start this goroutine here we won't block the following
+	// channel loading.
+	c.wg.Add(1)
+	go func() {
+		defer c.wg.Done()
+		c.resolveContracts()
+	}()
+
 	// First, we'll fetch all the channels that are still open, in order to
 	// collect them within our set of active contracts.
 	if err := c.loadOpenChannels(); err != nil {
@@ -697,6 +709,32 @@ func (c *ChainArbitrator) Start(beat chainio.Blockbeat) error {
 	return nil
 }
 
+// resolveContracts listens to the `resolvedChan` to mark a given channel as
+// fully resolved.
+func (c *ChainArbitrator) resolveContracts() {
+	for {
+		select {
+		// The channel arbitrator signals that a given channel has been
+		// resolved, we now update chain arbitrator's internal state for
+		// this channel.
+		case cp := <-c.resolvedChan:
+			if c.cfg.NotifyFullyResolvedChannel != nil {
+				c.cfg.NotifyFullyResolvedChannel(cp)
+			}
+
+			err := c.ResolveContract(cp)
+			if err != nil {
+				log.Errorf("Failed to resolve contract for "+
+					"channel %v", cp)
+			}
+
+		// Exit if the chain arbitrator is shutting down.
+		case <-c.quit:
+			return
+		}
+	}
+}
+
 // dispatchBlocks consumes a block epoch notification stream and dispatches
 // blocks to each of the chain arb's active channel arbitrators. This function
 // must be run in a goroutine.
@@ -762,6 +800,16 @@ func (c *ChainArbitrator) handleBlockbeat(beat chainio.Blockbeat) {
 	c.NotifyBlockProcessed(beat, err)
 }
 
+// notifyChannelResolved is used by the channel arbitrator to signal that a
+// given channel has been resolved.
+func (c *ChainArbitrator) notifyChannelResolved(cp wire.OutPoint) {
+	select {
+	case c.resolvedChan <- cp:
+	case <-c.quit:
+		return
+	}
+}
+
 // republishClosingTxs will load any stored cooperative or unilateral closing
 // transactions and republish them. This helps ensure propagation of the
 // transactions in the event that prior publications failed.
@@ -1346,20 +1394,16 @@ func (c *ChainArbitrator) loadPendingCloseChannels() error {
 					closeChanInfo.ShortChanID, htlc,
 				)
 			},
+			NotifyChannelResolved: func() {
+				c.notifyChannelResolved(chanPoint)
+			},
 		}
 		chanLog, err := newBoltArbitratorLog(
 			c.chanSource.Backend, arbCfg, c.cfg.ChainHash, chanPoint,
 		)
 		if err != nil {
 			return err
 		}
-		arbCfg.MarkChannelResolved = func() error {
-			if c.cfg.NotifyFullyResolvedChannel != nil {
-				c.cfg.NotifyFullyResolvedChannel(chanPoint)
-			}
-
-			return c.ResolveContract(chanPoint)
-		}
 
 		// We create an empty map of HTLC's here since it's possible
 		// that the channel is in StateDefault and updateActiveHTLCs is

contractcourt/channel_arbitrator.go

@@ -153,13 +153,9 @@ type ChannelArbitratorConfig struct {
 	// true. Otherwise this value is unset.
 	CloseType channeldb.ClosureType
 
-	// MarkChannelResolved is a function closure that serves to mark a
-	// channel as "fully resolved". A channel itself can be considered
-	// fully resolved once all active contracts have individually been
-	// fully resolved.
-	//
-	// TODO(roasbeef): need RPC's to combine for pendingchannels RPC
-	MarkChannelResolved func() error
+	// NotifyChannelResolved is used by the channel arbitrator to signal
+	// that a given channel has been resolved.
+	NotifyChannelResolved func()
 
 	// PutResolverReport records a resolver report for the channel. If the
 	// transaction provided is nil, the function should write the report
@@ -1397,10 +1393,7 @@ func (c *ChannelArbitrator) stateStep(
 		log.Infof("ChannelPoint(%v) has been fully resolved "+
 			"on-chain at height=%v", c.cfg.ChanPoint, triggerHeight)
 
-		if err := c.cfg.MarkChannelResolved(); err != nil {
-			log.Errorf("unable to mark channel resolved: %v", err)
-			return StateError, closeTx, err
-		}
+		c.cfg.NotifyChannelResolved()
 	}
 
 	log.Tracef("ChannelArbitrator(%v): next_state=%v", c.cfg.ChanPoint,

contractcourt/channel_arbitrator_test.go

@@ -417,17 +417,16 @@ func createTestChannelArbitrator(t *testing.T, log ArbitratorLog,
 	}
 
 	// We'll use the resolvedChan to synchronize on call to
-	// MarkChannelResolved.
+	// NotifyChannelResolved.
 	resolvedChan := make(chan struct{}, 1)
 
 	// Next we'll create the matching configuration struct that contains
 	// all interfaces and methods the arbitrator needs to do its job.
 	arbCfg := &ChannelArbitratorConfig{
 		ChanPoint:   chanPoint,
 		ShortChanID: shortChanID,
-		MarkChannelResolved: func() error {
+		NotifyChannelResolved: func() {
 			resolvedChan <- struct{}{}
-			return nil
 		},
 		MarkCommitmentBroadcasted: func(_ *wire.MsgTx,
 			_ lntypes.ChannelParty) error {
@@ -547,7 +546,7 @@ func TestChannelArbitratorCooperativeClose(t *testing.T) {
 	}
 
 	// Cooperative close should do trigger a MarkChannelClosed +
-	// MarkChannelResolved.
+	// NotifyChannelResolved.
 	closeInfo := &CooperativeCloseInfo{
 		&channeldb.ChannelCloseSummary{},
 	}

discovery/gossiper.go

@@ -399,6 +399,10 @@ type Config struct {
 	// MsgBurstBytes is the allotted burst amount in bytes. This is the
 	// number of starting tokens in our token bucket algorithm.
 	MsgBurstBytes uint64
+
+	// FilterConcurrency is the maximum number of concurrent gossip filter
+	// applications that can be processed.
+	FilterConcurrency int
 }
 
 // processedNetworkMsg is a wrapper around networkMsg and a boolean. It is
@@ -600,6 +604,7 @@ func New(cfg Config, selfKeyDesc *keychain.KeyDescriptor) *AuthenticatedGossiper
 		IsStillZombieChannel:     cfg.IsStillZombieChannel,
 		AllotedMsgBytesPerSecond: cfg.MsgRateBytes,
 		AllotedMsgBytesBurst:     cfg.MsgBurstBytes,
+		FilterConcurrency:        cfg.FilterConcurrency,
 	})
 
 	gossiper.reliableSender = newReliableSender(&reliableSenderCfg{
@@ -907,13 +912,16 @@ func (d *AuthenticatedGossiper) ProcessRemoteAnnouncement(ctx context.Context,
 			return errChan
 		}
 
-		// If we've found the message target, then we'll dispatch the
-		// message directly to it.
-		if err := syncer.ApplyGossipFilter(ctx, m); err != nil {
-			log.Warnf("Unable to apply gossip filter for peer=%x: "+
-				"%v", peer.PubKey(), err)
+		// Queue the message for asynchronous processing to prevent
+		// blocking the gossiper when rate limiting is active.
+		if !syncer.QueueTimestampRange(m) {
+			log.Warnf("Unable to queue gossip filter for peer=%x: "+
+				"queue full", peer.PubKey())
 
-			errChan <- err
+			// Return nil to indicate we've handled the message,
+			// even though it was dropped. This prevents the peer
+			// from being disconnected.
+			errChan <- nil
 			return errChan
 		}
 

discovery/sync_manager.go

@@ -25,19 +25,20 @@ const (
 	// network as possible.
 	DefaultHistoricalSyncInterval = time.Hour
 
-	// filterSemaSize is the capacity of gossipFilterSema.
-	filterSemaSize = 5
+	// DefaultFilterConcurrency is the default maximum number of concurrent
+	// gossip filter applications that can be processed.
+	DefaultFilterConcurrency = 5
 
 	// DefaultMsgBytesBurst is the allotted burst in bytes we'll permit.
 	// This is the most that can be sent in a given go. Requests beyond
 	// this, will block indefinitely. Once tokens (bytes are depleted),
 	// they'll be refilled at the DefaultMsgBytesPerSecond rate.
-	DefaultMsgBytesBurst = 2 * 100 * 1_024
+	DefaultMsgBytesBurst = 2 * 1000 * 1_024
 
 	// DefaultMsgBytesPerSecond is the max bytes/s we'll permit for outgoing
 	// messages. Once tokens (bytes) have been taken from the bucket,
 	// they'll be refilled at this rate.
-	DefaultMsgBytesPerSecond = 100 * 1_024
+	DefaultMsgBytesPerSecond = 1000 * 1_024
 
 	// assumedMsgSize is the assumed size of a message if we can't compute
 	// its serialized size. This comes out to 1 KB.
@@ -136,6 +137,10 @@ type SyncManagerCfg struct {
 	// AllotedMsgBytesBurst is the amount of burst bytes we'll permit, if
 	// we've exceeded the hard upper limit.
 	AllotedMsgBytesBurst uint64
+
+	// FilterConcurrency is the maximum number of concurrent gossip filter
+	// applications that can be processed. If not set, defaults to 5.
+	FilterConcurrency int
 }
 
 // SyncManager is a subsystem of the gossiper that manages the gossip syncers
@@ -207,8 +212,13 @@ type SyncManager struct {
 // newSyncManager constructs a new SyncManager backed by the given config.
 func newSyncManager(cfg *SyncManagerCfg) *SyncManager {
 
-	filterSema := make(chan struct{}, filterSemaSize)
-	for i := 0; i < filterSemaSize; i++ {
+	filterConcurrency := cfg.FilterConcurrency
+	if filterConcurrency == 0 {
+		filterConcurrency = DefaultFilterConcurrency
+	}
+
+	filterSema := make(chan struct{}, filterConcurrency)
+	for i := 0; i < filterConcurrency; i++ {
 		filterSema <- struct{}{}
 	}