autopilot+funding+rpc+invoices: complete migration to lazy debug logging

In this commit, we complete the migration to lnutils.SpewLogClosure for
the remaining application-layer components. This includes the autopilot
channel management system, the funding manager, the RPC server, and the
invoice storage subsystem.

autopilot/agent.go

@@ -11,8 +11,8 @@ import (
 
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcd/btcutil"
-	"github.com/davecgh/go-spew/spew"
 	"github.com/lightningnetwork/lnd/fn/v2"
+	"github.com/lightningnetwork/lnd/lnutils"
 	"github.com/lightningnetwork/lnd/lnwire"
 )
 
@@ -443,7 +443,7 @@ func (a *Agent) controller(ctx context.Context) {
 			case *chanOpenUpdate:
 				log.Debugf("New channel successfully opened, "+
 					"updating state with: %v",
-					spew.Sdump(update.newChan))
+					lnutils.SpewLogClosure(update.newChan))
 
 				newChan := update.newChan
 				a.chanStateMtx.Lock()
@@ -460,7 +460,9 @@ func (a *Agent) controller(ctx context.Context) {
 			case *chanCloseUpdate:
 				log.Debugf("Applying closed channel "+
 					"updates: %v",
-					spew.Sdump(update.closedChans))
+					lnutils.SpewLogClosure(
+						update.closedChans),
+				)
 
 				a.chanStateMtx.Lock()
 				for _, closedChan := range update.closedChans {
@@ -515,7 +517,8 @@ func (a *Agent) controller(ctx context.Context) {
 		}
 
 		a.pendingMtx.Lock()
-		log.Debugf("Pending channels: %v", spew.Sdump(a.pendingOpens))
+		log.Debugf("Pending channels: %v",
+			lnutils.SpewLogClosure(a.pendingOpens))
 		a.pendingMtx.Unlock()
 
 		// With all the updates applied, we'll obtain a set of the
@@ -699,7 +702,7 @@ func (a *Agent) openChans(ctx context.Context, availableFunds btcutil.Amount,
 	}
 
 	log.Infof("Attempting to execute channel attachment "+
-		"directives: %v", spew.Sdump(chanCandidates))
+		"directives: %v", lnutils.SpewLogClosure(chanCandidates))
 
 	// Before proceeding, check to see if we have any slots
 	// available to open channels. If there are any, we will attempt

funding/manager.go

@@ -18,7 +18,6 @@ import (
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/txscript"
 	"github.com/btcsuite/btcd/wire"
-	"github.com/davecgh/go-spew/spew"
 	"github.com/lightningnetwork/lnd/chainntnfs"
 	"github.com/lightningnetwork/lnd/chanacceptor"
 	"github.com/lightningnetwork/lnd/channeldb"
@@ -992,7 +991,9 @@ func (f *Manager) failFundingFlow(peer lnpeer.Peer, cid *chanIdentifier,
 	}
 
 	log.Debugf("Sending funding error to peer (%x): %v",
-		peer.IdentityKey().SerializeCompressed(), spew.Sdump(errMsg))
+		peer.IdentityKey().SerializeCompressed(),
+		lnutils.SpewLogClosure(errMsg))
+
 	if err := peer.SendMessage(false, errMsg); err != nil {
 		log.Errorf("unable to send error message to peer %v", err)
 	}
@@ -1012,7 +1013,7 @@ func (f *Manager) sendWarning(peer lnpeer.Peer, cid *chanIdentifier,
 
 	log.Debugf("Sending funding warning to peer (%x): %v",
 		peer.IdentityKey().SerializeCompressed(),
-		spew.Sdump(errMsg),
+		lnutils.SpewLogClosure(errMsg),
 	)
 
 	if err := peer.SendMessage(false, errMsg); err != nil {

invoices/sql_store.go

@@ -10,10 +10,10 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/davecgh/go-spew/spew"
 	"github.com/lightningnetwork/lnd/clock"
 	"github.com/lightningnetwork/lnd/graph/db/models"
 	"github.com/lightningnetwork/lnd/lntypes"
+	"github.com/lightningnetwork/lnd/lnutils"
 	"github.com/lightningnetwork/lnd/lnwire"
 	"github.com/lightningnetwork/lnd/record"
 	"github.com/lightningnetwork/lnd/sqldb"
@@ -409,7 +409,7 @@ func getInvoiceByRef(ctx context.Context,
 		// In case the reference is ambiguous, meaning it matches more
 		// than	one invoice, we'll return an error.
 		return sqlc.Invoice{}, fmt.Errorf("ambiguous invoice ref: "+
-			"%s: %s", ref.String(), spew.Sdump(rows))
+			"%s: %s", ref.String(), lnutils.SpewLogClosure(rows))
 
 	case err != nil:
 		return sqlc.Invoice{}, fmt.Errorf("unable to fetch invoice: %w",

rpcserver.go

@@ -33,7 +33,6 @@ import (
 	"github.com/btcsuite/btcwallet/waddrmgr"
 	"github.com/btcsuite/btcwallet/wallet"
 	"github.com/btcsuite/btcwallet/wallet/txauthor"
-	"github.com/davecgh/go-spew/spew"
 	proxy "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
 	"github.com/lightningnetwork/lnd/autopilot"
 	"github.com/lightningnetwork/lnd/build"
@@ -1526,7 +1525,8 @@ func (r *rpcServer) SendCoins(ctx context.Context,
 		}
 
 		rpcsLog.Debugf("Sweeping coins from wallet to addr=%v, "+
-			"with tx=%v", in.Addr, spew.Sdump(sweepTxPkg.SweepTx))
+			"with tx=%v", in.Addr,
+			lnutils.SpewLogClosure(sweepTxPkg.SweepTx))
 
 		// As our sweep transaction was created, successfully, we'll
 		// now attempt to publish it, cancelling the sweep pkg to
@@ -1612,7 +1612,7 @@ func (r *rpcServer) SendMany(ctx context.Context,
 	}
 
 	rpcsLog.Infof("[sendmany] outputs=%v, sat/kw=%v",
-		spew.Sdump(in.AddrToAmount), int64(feePerKw))
+		lnutils.SpewLogClosure(in.AddrToAmount), int64(feePerKw))
 
 	var txid *chainhash.Hash