Using BasicAuth middleware

// simulate some private data
var secrets = gin.H{
  "foo":    gin.H{"email": "[email protected]", "phone": "123433"},
  "austin": gin.H{"email": "[email protected]", "phone": "666"},
  "lena":   gin.H{"email": "[email protected]", "phone": "523443"},
}

func main() {
  router := gin.Default()

  // Group using gin.BasicAuth() middleware
  // gin.Accounts is a shortcut for map[string]string
  authorized := router.Group("/admin", gin.BasicAuth(gin.Accounts{
    "foo":    "bar",
    "austin": "1234",
    "lena":   "hello2",
    "manu":   "4321",
  }))

  // /admin/secrets endpoint
  // hit "localhost:8080/admin/secrets
  authorized.GET("/secrets", func(c *gin.Context) {
    // get user, it was set by the BasicAuth middleware
    user := c.MustGet(gin.AuthUserKey).(string)
    if secret, ok := secrets[user]; ok {
      c.JSON(http.StatusOK, gin.H{"user": user, "secret": secret})
    } else {
      c.JSON(http.StatusOK, gin.H{"user": user, "secret": "NO SECRET :("})
    }
  })

  // Listen and serve on 0.0.0.0:8080
  router.Run(":8080")
}