feat: prepare for oidc authentication with dex

config/config.yaml

@@ -10,6 +10,11 @@ server:
   bind_addr: 127.0.0.1:8069
   name: "random_server"
 
+authentication:
+  enabled: false
+  dex:
+    dex_url: ""
+
 client:
   bind_addr: 127.0.0.1:8070
   server_addr: 127.0.0.1:8069

internal/app/client/client.go

@@ -41,6 +41,10 @@ func (c Client) GetRandNumber(ctx context.Context, seed int64) (int64, error) {
 	return reply.Number, nil
 }
 
+func registerDexHandler(router *echo.Echo) {
+	return
+}
+
 // HttpClient runs the client.
 func HttpClient(config *config.Config) error {
 	// Tracing
@@ -109,6 +113,10 @@ func HttpClient(config *config.Config) error {
 			"number": randNum,
 		})
 	})
+	if config.Authentication.Enabled { // Register Dex authentication handler
+		registerDexHandler(router)
+	}
+
 	if err := router.Start(config.Client.BindAddr); err != nil {
 		log.Fatal(err)
 	}

pkg/config/config.go

@@ -14,6 +14,19 @@ type Server struct {
 	Name     string `mapstructure:"name" validate:"required"`
 }
 
+// Server config
+type Authentication struct {
+	// Enable default is false
+	Enabled bool `mapstructure:"enable"`
+
+	Dex Dex `mapstructure:"dex"`
+}
+
+// Dex Authentication config
+type Dex struct {
+	DexURL string `mapstructure:"dex_url"`
+}
+
 // Client config
 type Client struct {
 	BindAddr   string `mapstructure:"bind_addr" validate:"required"`
@@ -46,11 +59,12 @@ type Tracing struct {
 
 // Config struct
 type Config struct {
-	Server  Server  `mapstructure:"server" validate:"required"`
-	Client  Client  `mapstructure:"client" validate:"required"`
-	Logs    Logs    `mapstructure:"logs" validate:"required"`
-	Metrics Metrics `mapstructure:"metrics" validate:"required"`
-	Tracing Tracing `mapstructure:"tracing" validate:"required"`
+	Server         Server         `mapstructure:"server" validate:"required"`
+	Authentication Authentication `mapstructure:"authentication" validate:"required"`
+	Client         Client         `mapstructure:"client" validate:"required"`
+	Logs           Logs           `mapstructure:"logs" validate:"required"`
+	Metrics        Metrics        `mapstructure:"metrics" validate:"required"`
+	Tracing        Tracing        `mapstructure:"tracing" validate:"required"`
 }
 
 // Load config file from given path