feat: configuration for log rotation

Author: sergey3bv

cmd/peerswaplnd/config.go

@@ -44,6 +44,8 @@ type PeerSwapConfig struct {
 	DataDir    string   `long:"datadir" description:"peerswap datadir"`
 	LogLevel   LogLevel `long:"loglevel" description:"loglevel (1=Info, 2=Debug)"`
 
+	LogRotation LogRotationConfig `group:"Log rotation" namespace:"logrotation"`
+
 	LndConfig      *LndConfig     `group:"Lnd Grpc config" namespace:"lnd"`
 	ElementsConfig *OnchainConfig `group:"Elements Rpc Config" namespace:"elementsd"`
 	LWKConfig      *lwk.Conf
@@ -139,6 +141,15 @@ type LndConfig struct {
 	MacaroonPath string `long:"macaroonpath" description:"path to the macaroon (admin.macaroon or custom baked one)"`
 }
 
+type LogRotationConfig struct {
+	// In megabytes
+	MaxSize    int `long:"maxsize" description:"maximum size in megabytes of the log file before rotation."`
+	MaxBackups int `long:"maxbackups" description:"maximum number of old log files to retain."`
+	// In days
+	MaxAge   int  `long:"maxage" description:"maximum number of days to retain old log files."`
+	Compress bool `long:"compress" description:"whether to compress log files using gzip"`
+}
+
 func DefaultConfig() *PeerSwapConfig {
 	return &PeerSwapConfig{
 		Host:       DefaultPeerswapHost,
@@ -154,6 +165,7 @@ func DefaultConfig() *PeerSwapConfig {
 		BitcoinEnabled: DefaultBitcoinEnabled,
 		ElementsConfig: defaultLiquidConfig(),
 		LogLevel:       DefaultLogLevel,
+		LogRotation:    defaultLogRotationConfig(),
 	}
 }
 
@@ -170,6 +182,15 @@ func defaultLiquidConfig() *OnchainConfig {
 	}
 }
 
+func defaultLogRotationConfig() LogRotationConfig {
+	return LogRotationConfig{
+		MaxSize:    10,
+		MaxBackups: 5,
+		MaxAge:     28,
+		Compress:   true,
+	}
+}
+
 func LWKFromIniFileConfig(filePath string) (*lwk.Conf, error) {
 	type LWK struct {
 		SignerName       string `long:"signername" description:"name of the signer"`

cmd/peerswaplnd/peerswapd/main.go

@@ -602,10 +602,10 @@ func NewLndLogger(cfg *peerswaplnd.PeerSwapConfig) (*LndLogger, error) {
 	core_log.SetFlags(core_log.LstdFlags | core_log.LUTC)
 	core_log.SetOutput(&lumberjack.Logger{
 		Filename:   logFile,
-		MaxSize:    10, // megabytes
-		MaxBackups: 5,
-		MaxAge:     28, // days
-		Compress:   true,
+		MaxSize:    cfg.LogRotation.MaxSize,
+		MaxBackups: cfg.LogRotation.MaxBackups,
+		MaxAge:     cfg.LogRotation.MaxAge,
+		Compress:   cfg.LogRotation.Compress,
 	})
 
 	return &LndLogger{loglevel: cfg.LogLevel}, nil