Change /metrics into the community edition (#216)

* Add types.go to extract types

* Add 'metrics.go' for the community edition

Author: Noah Hanjun Lee

internal/server/metrics/metrics.go

@@ -1,3 +1,9 @@
+// Copyright 2021 Gitploy.IO Inc. All rights reserved.
+// Use of this source code is governed by the Gitploy Non-Commercial License
+// that can be found in the LICENSE file.
+
+// +build !oss
+
 package metrics
 
 import (
@@ -19,15 +25,6 @@ const (
 )
 
 type (
-	Metric struct {
-		prometheusAuthSecret string
-	}
-
-	MetricConfig struct {
-		Interactor
-		PrometheusAuthSecret string
-	}
-
 	collector struct {
 		i Interactor
 

internal/server/metrics/metrics_oss.go

@@ -0,0 +1,17 @@
+// +build oss
+
+package metrics
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+func NewMetric(c *MetricConfig) *Metric {
+	return &Metric{}
+}
+
+func (m *Metric) CollectMetrics(c *gin.Context) {
+	c.Status(http.StatusOK)
+}

internal/server/metrics/types.go

@@ -0,0 +1,12 @@
+package metrics
+
+type (
+	Metric struct {
+		prometheusAuthSecret string
+	}
+
+	MetricConfig struct {
+		Interactor
+		PrometheusAuthSecret string
+	}
+)