added basic server status endpoint

backend/api.go

@@ -71,7 +71,8 @@ func endpoint(wrapped apiEndpoint) httprouter.Handle {
 // Register api endpoints
 func apiRegisterEndpoints(router *httprouter.Router) error {
 
-	// Config
+	// Meta
+	router.GET("/api/status", endpoint(apiStatusShow))
 	router.GET("/api/config", endpoint(apiConfigShow))
 
 	// Routeservers
@@ -87,6 +88,13 @@ func apiRegisterEndpoints(router *httprouter.Router) error {
 	return nil
 }
 
+// Handle Status Endpoint, this is intended for
+// monitoring and service health checks
+func apiStatusShow(_req *http.Request, _params httprouter.Params) (api.Response, error) {
+	status, err := NewAppStatus()
+	return status, err
+}
+
 // Handle Config Endpoint
 func apiConfigShow(_req *http.Request, _params httprouter.Params) (api.Response, error) {
 	result := api.ConfigResponse{

backend/status.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"strings"
+
+	"github.com/GeertJohan/go.rice"
+)
+
+// Gather application status information
+type AppStatus struct {
+	Version string `json:"version"`
+}
+
+// Get application status, perform health checks
+// on backends.
+func NewAppStatus() (*AppStatus, error) {
+	status := &AppStatus{
+		Version: statusGetVersion(),
+	}
+	return status, nil
+}
+
+// Get application version
+func statusGetVersion() string {
+	meta, err := rice.FindBox("../")
+	if err != nil {
+		return "unknown"
+	}
+	version, err := meta.String("VERSION")
+	if err != nil {
+		return "unknown"
+	}
+	return strings.Trim(version, "\n")
+}