fix(util): make FatalOnError override log.Silence

cmd/root.go

@@ -88,7 +88,7 @@ func initConfig() {
 		util.FatalOnError("unable to load configuration: ", err)
 	}
 
-	log.ConfigureLogger(&cfg.Log)
+	log.Configure(&cfg.Log)
 
 	if len(cfg.Ports.HTTP) != 0 {
 		split := strings.Split(cfg.Ports.HTTP[0], ":")

cmd/serve.go

@@ -40,7 +40,7 @@ func startServer(_ *cobra.Command, _ []string) error {
 		return fmt.Errorf("unable to load configuration: %w", err)
 	}
 
-	log.ConfigureLogger(&cfg.Log)
+	log.Configure(&cfg.Log)
 
 	signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM)
 

log/logger.go

@@ -9,6 +9,7 @@ import (
 	"sync"
 	"sync/atomic"
 
+	"github.com/creasty/defaults"
 	"github.com/mattn/go-colorable"
 	"github.com/sirupsen/logrus"
 	prefixed "github.com/x-cray/logrus-prefixed-formatter"
@@ -49,22 +50,26 @@ type Config struct {
 	Timestamp bool       `yaml:"timestamp" default:"true"`
 }
 
+// DefaultConfig returns a new Config initialized with default values.
+func DefaultConfig() *Config {
+	cfg := new(Config)
+
+	defaults.MustSet(cfg)
+
+	return cfg
+}
+
 //nolint:gochecknoinits
 func init() {
 	if !initDone.CompareAndSwap(false, true) {
 		return
 	}
 
-	logger = logrus.New()
+	newLogger := logrus.New()
 
-	defaultConfig := &Config{
-		Level:     LevelInfo,
-		Format:    FormatTypeText,
-		Privacy:   false,
-		Timestamp: true,
-	}
+	ConfigureLogger(newLogger, DefaultConfig())
 
-	ConfigureLogger(defaultConfig)
+	logger = newLogger
 }
 
 // Log returns the global logger
@@ -94,8 +99,13 @@ func EscapeInput(input string) string {
 	return result
 }
 
-// ConfigureLogger applies configuration to the global logger
-func ConfigureLogger(cfg *Config) {
+// Configure applies configuration to the global logger.
+func Configure(cfg *Config) {
+	ConfigureLogger(logger, cfg)
+}
+
+// Configure applies configuration to the given logger.
+func ConfigureLogger(logger *logrus.Logger, cfg *Config) {
 	if level, err := logrus.ParseLevel(cfg.Level.String()); err != nil {
 		logger.Fatalf("invalid log level %s %v", cfg.Level, err)
 	} else {

util/common.go

@@ -3,6 +3,7 @@ package util
 import (
 	"encoding/binary"
 	"fmt"
+	"io"
 	"net"
 	"path/filepath"
 	"regexp"
@@ -159,7 +160,14 @@ func LogOnErrorWithEntry(logEntry *logrus.Entry, message string, err error) {
 // FatalOnError logs the message only if error is not nil and exits the program execution
 func FatalOnError(message string, err error) {
 	if err != nil {
-		log.Log().Fatal(message, err)
+		logger := log.Log()
+
+		// Make sure the error is printend even if the log has been silenced
+		if logger.Out == io.Discard {
+			log.ConfigureLogger(logger, log.DefaultConfig())
+		}
+
+		logger.Fatal(message, err)
 	}
 }