Merge pull request #9261 from yyforyongyu/fix-rpcclient-shutdown

multi: fix rpcclient shutdown

chainntnfs/bitcoindnotify/bitcoind.go

@@ -139,6 +139,7 @@ func (b *BitcoindNotifier) Stop() error {
 	// Shutdown the rpc client, this gracefully disconnects from bitcoind,
 	// and cleans up all related resources.
 	b.chainConn.Stop()
+	b.chainConn.WaitForShutdown()
 
 	close(b.quit)
 	b.wg.Wait()

chainntnfs/btcdnotify/btcd.go

@@ -180,7 +180,7 @@ func (b *BtcdNotifier) Stop() error {
 
 	// Shutdown the rpc client, this gracefully disconnects from btcd, and
 	// cleans up all related resources.
-	b.chainConn.Shutdown()
+	b.chainConn.Stop()
 
 	close(b.quit)
 	b.wg.Wait()

channeldb/peers.go

@@ -50,6 +50,12 @@ type FlapCount struct {
 // bucket for the peer's pubkey if necessary. Note that this function overwrites
 // the current value.
 func (d *DB) WriteFlapCounts(flapCounts map[route.Vertex]*FlapCount) error {
+	// Exit early if there are no updates.
+	if len(flapCounts) == 0 {
+		log.Debugf("No flap counts to write, skipped db update")
+		return nil
+	}
+
 	return kvdb.Update(d, func(tx kvdb.RwTx) error {
 		// Run through our set of flap counts and record them for
 		// each peer, creating a bucket for the peer pubkey if required.

docs/release-notes/release-notes-0.19.0.md

@@ -48,6 +48,9 @@
 * [Fixed a bug](https://github.com/lightningnetwork/lnd/pull/9249) found in the
   mission control store that can block the shutdown process of LND.
 
+* Make sure the RPC clients used to access the chain backend are [properly
+  shutdown](https://github.com/lightningnetwork/lnd/pull/9261).
+
 # New Features
 ## Functional Enhancements
 ## RPC Additions
@@ -197,3 +200,4 @@ The underlying functionality between those two options remain the same.
 * Pins
 * Viktor Tigerström
 * Ziggie
+

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0
 	github.com/btcsuite/btclog v0.0.0-20241003133417-09c4e92e319c
 	github.com/btcsuite/btclog/v2 v2.0.0-20241017175713-3428138b75c7
-	github.com/btcsuite/btcwallet v0.16.10-0.20240912233857-ffb143c77cc5
+	github.com/btcsuite/btcwallet v0.16.10-0.20241113134707-b4ff60753aaa
 	github.com/btcsuite/btcwallet/wallet/txauthor v1.3.5
 	github.com/btcsuite/btcwallet/wallet/txrules v1.2.2
 	github.com/btcsuite/btcwallet/walletdb v1.4.4

go.sum

@@ -95,8 +95,8 @@ github.com/btcsuite/btclog v0.0.0-20241003133417-09c4e92e319c/go.mod h1:w7xnGOhw
 github.com/btcsuite/btclog/v2 v2.0.0-20241017175713-3428138b75c7 h1:3Ct3zN3VCEKVm5nceWBBEKczc+jvTfVyOEG71ob2Yuc=
 github.com/btcsuite/btclog/v2 v2.0.0-20241017175713-3428138b75c7/go.mod h1:XItGUfVOxotJL8kkuk2Hj3EVow5KCugXl3wWfQ6K0AE=
 github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
-github.com/btcsuite/btcwallet v0.16.10-0.20240912233857-ffb143c77cc5 h1:zYy233eUBvkF3lq2MUkybEhxhDsrRDSgiToIKN57mtk=
-github.com/btcsuite/btcwallet v0.16.10-0.20240912233857-ffb143c77cc5/go.mod h1:1HJXYbjJzgumlnxOC2+ViR1U+gnHWoOn7WeK5OfY1eU=
+github.com/btcsuite/btcwallet v0.16.10-0.20241113134707-b4ff60753aaa h1:x7vYpwkPL5zeJEWPPaRunybH9ERRMGWeNf7x/0aU/38=
+github.com/btcsuite/btcwallet v0.16.10-0.20241113134707-b4ff60753aaa/go.mod h1:1HJXYbjJzgumlnxOC2+ViR1U+gnHWoOn7WeK5OfY1eU=
 github.com/btcsuite/btcwallet/wallet/txauthor v1.3.5 h1:Rr0njWI3r341nhSPesKQ2JF+ugDSzdPoeckS75SeDZk=
 github.com/btcsuite/btcwallet/wallet/txauthor v1.3.5/go.mod h1:+tXJ3Ym0nlQc/iHSwW1qzjmPs3ev+UVWMbGgfV1OZqU=
 github.com/btcsuite/btcwallet/wallet/txrules v1.2.2 h1:YEO+Lx1ZJJAtdRrjuhXjWrYsmAk26wLTlNzxt2q0lhk=

lnwallet/chainfee/estimator.go

@@ -238,6 +238,7 @@ func (b *BtcdEstimator) Stop() error {
 	b.filterManager.Stop()
 
 	b.btcdConn.Shutdown()
+	b.btcdConn.WaitForShutdown()
 
 	return nil
 }

routing/chainview/bitcoind.go

@@ -136,6 +136,7 @@ func (b *BitcoindFilteredChainView) Stop() error {
 	// Shutdown the rpc client, this gracefully disconnects from bitcoind's
 	// zmq socket, and cleans up all related resources.
 	b.chainClient.Stop()
+	b.chainClient.WaitForShutdown()
 
 	b.blockQueue.Stop()
 

routing/chainview/btcd.go

@@ -146,6 +146,7 @@ func (b *BtcdFilteredChainView) Stop() error {
 	// Shutdown the rpc client, this gracefully disconnects from btcd, and
 	// cleans up all related resources.
 	b.btcdConn.Shutdown()
+	b.btcdConn.WaitForShutdown()
 
 	b.blockQueue.Stop()