config: make log level configurable

Author: daniel-abramov

pkg/config/config.go

@@ -17,6 +17,8 @@ type Config struct {
 	Matrix signaling.Config `yaml:"matrix"`
 	// Conference (call) configuration.
 	Conference conference.Config `yaml:"conference"`
+	// Starting from which level to log stuff.
+	LogLevel string `yaml:"log"`
 }
 
 // Tries to load a config from the `CONFIG` environment variable.

pkg/main.go

@@ -40,9 +40,6 @@ func main() {
 	// Initialize logging subsystem (formatting, global logging framework etc).
 	logrus.SetFormatter(&logrus.TextFormatter{FullTimestamp: true, ForceColors: true})
 
-	// Temporarily enable debug logging.
-	logrus.SetLevel(logrus.DebugLevel)
-
 	// Define functions that are called before exiting.
 	// This is useful to stop the profiler if it's enabled.
 	deferred_functions := []func(){}
@@ -71,6 +68,23 @@ func main() {
 		return
 	}
 
+	switch config.LogLevel {
+	case "debug":
+		logrus.SetLevel(logrus.DebugLevel)
+	case "info":
+		logrus.SetLevel(logrus.InfoLevel)
+	case "warn":
+		logrus.SetLevel(logrus.WarnLevel)
+	case "error":
+		logrus.SetLevel(logrus.ErrorLevel)
+	case "fatal":
+		logrus.SetLevel(logrus.FatalLevel)
+	case "panic":
+		logrus.SetLevel(logrus.PanicLevel)
+	default:
+		logrus.SetLevel(logrus.InfoLevel)
+	}
+
 	// Create matrix client.
 	matrixClient := signaling.NewMatrixClient(config.Matrix)