otils

func CORSMiddleware ¶

func CORSMiddleware(c *CORS, next http.Handler) http.Handler

func CORSMiddlewareAllInclusive ¶

func CORSMiddlewareAllInclusive(next http.Handler) http.Handler

CORSMiddlewareAllInclusive is a convenience helper that uses the all inclusive CORS: Access-Control-Allow-Origin: * Access-Control-Allow-Methods: * Access-Control-Allow-Headers: * Access-Control-Allow-Credentials: * thus enabling all origins, all methods and all headers.

func EnvOrAlternates ¶

func EnvOrAlternates(envVar string, alternates ...string) string

func FirstNonEmptyString ¶

func FirstNonEmptyString(args ...string) string

FirstNonEmptyString iterates through its arguments trying to find the first string that is not blank or consists entirely of spaces.

func NonEmptyStrings ¶

func NonEmptyStrings(args ...string) (nonEmpties []string)

func RedirectAllTrafficTo ¶

func RedirectAllTrafficTo(host string) http.Handler

RedirectAllTrafficTo creates a handler that can be attached to an HTTP traffic multiplexer to perform a 301 Permanent Redirect to the specified host for any path, anytime that the handler receives a request. Sample usage is:

httpsRedirectHandler := RedirectAllTrafficTo("https://orijtech.com")
if err := http.ListenAndServe(":80", httpsRedirectHandler); err != nil {
  log.Fatal(err)
}

which is used in production at orijtech.com to redirect any non-https traffic from http://orijtech.com/* to https://orijtech.com/*

func StatusOK ¶

func StatusOK(code int) bool

StatusOK returns true if a status code is a 2XX code

func ToURLValues ¶

func ToURLValues(v interface{}) (url.Values, error)

ToURLValues transforms any type with fields into a url.Values map so that it can be used to make the QUERY string in HTTP GET requests for example:

Transforming a struct whose JSON representation is:

{
   "url": "https://orijtech.com",
   "logo": {
	"url": "https://orijtech.com/favicon.ico",
	"dimens": {
	  "width": 100, "height": 120,
	  "extra": {
	    "overlap": true,
	    "shade": "48%"
	  }
	}
   }
}

Into: "logo.dimension.extra.shade=48%25&logo.dimension.extra.zoom=false&logo.dimension.height=120&logo.dimension.width=100&logo.url=https%3A%2F%2Forijtech.com%2Ffavicon.ico"

func UniqStrings ¶

func UniqStrings(strs ...string) []string

UniqStrings returns a slice contains unique element from given input strings.