feat(core): allow disabling logging in config

internal/logger/logger.go

@@ -12,6 +12,7 @@ const (
 	Verbose Level = iota
 	Debug
 	Error
+	none
 )
 
 type Log struct {
@@ -32,6 +33,13 @@ func New(debug bool) *Log {
 	}
 }
 
+func NewDisabled() *Log {
+	return &Log{
+		logger: log.New(os.Stderr, "", log.LstdFlags),
+		level:  none,
+	}
+}
+
 func (l *Log) Verbose(format string, args ...interface{}) {
 	if l.level <= Verbose {
 		format = fmt.Sprintf("DEBUG - %v\n", format)

pkg/experiment/local/client.go

@@ -46,6 +46,10 @@ func Initialize(apiKey string, config *Config) *Client {
 		}
 		config = fillConfigDefaults(config)
 		log := logger.New(config.Debug)
+		if config.DisableLogging {
+			log = logger.NewDisabled()
+		}
+
 		var as *assignmentService
 		if config.AssignmentConfig != nil && config.AssignmentConfig.APIKey != "" {
 			amplitudeClient := amplitude.NewClient(config.AssignmentConfig.Config)

pkg/experiment/local/config.go

@@ -20,6 +20,7 @@ const (
 
 type Config struct {
 	Debug                          bool
+	DisableLogging                 bool
 	ServerUrl                      string
 	ServerZone                     ServerZone
 	FlagConfigPollerInterval       time.Duration

pkg/experiment/remote/client.go

@@ -35,8 +35,14 @@ func Initialize(apiKey string, config *Config) *Client {
 			panic("api key must be set")
 		}
 		config = fillConfigDefaults(config)
+
+		l := logger.New(config.Debug)
+		if config.DisableLogging {
+			l = logger.NewDisabled()
+		}
+
 		client = &Client{
-			log:    logger.New(config.Debug),
+			log:    l,
 			apiKey: apiKey,
 			config: config,
 			client: &http.Client{},

pkg/experiment/remote/config.go

@@ -5,10 +5,11 @@ import (
 )
 
 type Config struct {
-	Debug        bool
-	ServerUrl    string
-	FetchTimeout time.Duration
-	RetryBackoff *RetryBackoff
+	Debug          bool
+	DisableLogging bool
+	ServerUrl      string
+	FetchTimeout   time.Duration
+	RetryBackoff   *RetryBackoff
 }
 
 var DefaultConfig = &Config{