use internal init for settings

pkg/metrics/init.go

@@ -0,0 +1,38 @@
+package metrics
+
+import (
+	"context"
+
+	ini "gopkg.in/ini.v1"
+
+	"github.com/grafana/grafana/pkg/log"
+	"github.com/grafana/grafana/pkg/metrics/graphitebridge"
+)
+
+var metricsLogger log.Logger = log.New("metrics")
+
+type logWrapper struct {
+	logger log.Logger
+}
+
+func (lw *logWrapper) Println(v ...interface{}) {
+	lw.logger.Info("graphite metric bridge", v...)
+}
+
+func Init(file *ini.File) {
+	cfg := ReadSettings(file)
+	internalInit(cfg)
+}
+
+func internalInit(settings *MetricSettings) {
+	initMetricVars(settings)
+
+	if settings.GraphiteBridgeConfig != nil {
+		bridge, err := graphitebridge.NewBridge(settings.GraphiteBridgeConfig)
+		if err != nil {
+			metricsLogger.Error("failed to create graphite bridge", "error", err)
+		} else {
+			go bridge.Run(context.Background())
+		}
+	}
+}