Add wallet log.

This commit adds logger for the dcrwallet.

Author: amass01

dcrtimed/backend/filesystem/filesystem.go

@@ -1147,7 +1147,6 @@ func New(root, cert, host, clientCert, clientKey string, enableCollections bool,
 	fs.maxDigests = maxDigests
 
 	// Runtime bits
-	dcrtimewallet.UseLogger(log)
 	fs.wallet, err = dcrtimewallet.New(cert, host, clientCert, clientKey, passphrase)
 	if err != nil {
 		return nil, err

dcrtimed/dcrtimed.go

@@ -25,6 +25,7 @@ import (
 	v2 "github.com/decred/dcrtime/api/v2"
 	"github.com/decred/dcrtime/dcrtimed/backend"
 	"github.com/decred/dcrtime/dcrtimed/backend/filesystem"
+	"github.com/decred/dcrtime/dcrtimed/dcrtimewallet"
 	"github.com/decred/dcrtime/util"
 	"github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
@@ -1442,6 +1443,9 @@ func _main() error {
 	log.Infof("Network : %v", activeNetParams.Params.Name)
 	log.Infof("Home dir: %v", loadedCfg.HomeDir)
 
+	// Sets subsystem loggers
+	dcrtimewallet.UseLogger(walletLog)
+
 	// Create the data directory in case it does not exist.
 	err = os.MkdirAll(loadedCfg.DataDir, 0700)
 	if err != nil {

dcrtimed/dcrtimewallet/log.go

@@ -28,11 +28,17 @@ import (
 var log = slog.Disabled
 
 // UseLogger sets the logger to use for the gRPC server.
-func UseLogger(l slog.Logger) {
+func UseGrpcLogger(l slog.Logger) {
 	grpclog.SetLogger(logger{l})
 	log = l
 }
 
+// UseLogger sets the subsystem logger for this package, without
+// gRPC logging.
+func UseLogger(l slog.Logger) {
+	log = l
+}
+
 // logger uses a slog.Logger to implement the grpclog.Logger interface.
 type logger struct {
 	slog.Logger

dcrtimed/log.go

@@ -40,14 +40,16 @@ var (
 	// application shutdown.
 	logRotator *rotator.Rotator
 
-	log     = backendLog.Logger("DCRT")
-	fsbeLog = backendLog.Logger("FSBE")
+	log       = backendLog.Logger("DCRT")
+	fsbeLog   = backendLog.Logger("FSBE")
+	walletLog = backendLog.Logger("DCRW")
 )
 
 // subsystemLoggers maps each subsystem identifier to its associated logger.
 var subsystemLoggers = map[string]slog.Logger{
 	"DCRT": log,
 	"FSBE": fsbeLog,
+	"DCRW": walletLog,
 }
 
 // initLogRotator initializes the logging rotater to write logs to logFile and