multi: move logcompressor to logging.file.compressor

This is not a breaking change since the logcompressor config option has
not been released yet.

build/config.go

@@ -1,11 +1,17 @@
 package build
 
-import "github.com/btcsuite/btclog/v2"
+import (
+	"fmt"
+
+	"github.com/btcsuite/btclog/v2"
+)
 
 const (
 	callSiteOff   = "off"
 	callSiteShort = "short"
 	callSiteLong  = "long"
+
+	defaultLogCompressor = Gzip
 )
 
 // LogConfig holds logging configuration options.
@@ -16,6 +22,16 @@ type LogConfig struct {
 	File    *FileLoggerConfig `group:"file" namespace:"file" description:"The logger writing to LND's standard log file."`
 }
 
+// Validate validates the LogConfig struct values.
+func (c *LogConfig) Validate() error {
+	if !SupportedLogCompressor(c.File.Compressor) {
+		return fmt.Errorf("invalid log compressor: %v",
+			c.File.Compressor)
+	}
+
+	return nil
+}
+
 // LoggerConfig holds options for a particular logger.
 //
 //nolint:lll
@@ -30,6 +46,7 @@ func DefaultLogConfig() *LogConfig {
 	return &LogConfig{
 		Console: defaultConsoleLoggerCfg(),
 		File: &FileLoggerConfig{
+			Compressor: defaultLogCompressor,
 			LoggerConfig: LoggerConfig{
 				CallSite: callSiteOff,
 			},
@@ -63,6 +80,9 @@ func (cfg *LoggerConfig) HandlerOptions() []btclog.HandlerOption {
 }
 
 // FileLoggerConfig extends LoggerConfig with specific log file options.
+//
+//nolint:lll
 type FileLoggerConfig struct {
 	LoggerConfig
+	Compressor string `long:"compressor" description:"Compression algorithm to use when rotating logs." choice:"gzip" choice:"zstd"`
 }

build/log.go

@@ -52,9 +52,9 @@ var logCompressors = map[string]string{
 	Zstd: "zst",
 }
 
-// SuportedLogCompressor returns whether or not logCompressor is a supported
+// SupportedLogCompressor returns whether or not logCompressor is a supported
 // compression algorithm for log files.
-func SuportedLogCompressor(logCompressor string) bool {
+func SupportedLogCompressor(logCompressor string) bool {
 	_, ok := logCompressors[logCompressor]
 
 	return ok

build/logrotator.go

@@ -48,7 +48,7 @@ func (r *RotatingLogWriter) InitLogRotator(logFile, logCompressor string,
 	}
 
 	// Reject unknown compressors.
-	if !SuportedLogCompressor(logCompressor) {
+	if !SupportedLogCompressor(logCompressor) {
 		return fmt.Errorf("unknown log compressor: %v", logCompressor)
 	}