mixed

README

go-echo-mixed-middleware

A composition middleware for Echo that will succeed if either of the middleware succeeds.

Guide

Installation

go get github.com/kumojin/go-echo-mixed-middleware

Example

package main

import (
  "errors"
  "net/http"
  "github.com/labstack/echo/v4"
  "github.com/labstack/echo/v4/middleware"
  mixed "github.com/kumojin/go-echo-mixed-middleware"
)

func main() {
  // Echo instance
  e := echo.New()

  // Middleware
  e.Use(middleware.Logger())
  e.Use(middleware.Recover())

  // Routes
  e.GET("/", hello, mixed.Mixed(failingMiddleware, succeedingMiddleware))

  // Start server
  e.Logger.Fatal(e.Start(":1323"))
}

// Handler
func hello(c echo.Context) error {
  return c.String(http.StatusOK, "Hello, World!")
}

func succeedingMiddleware() echo.MiddlewareFunc {
	return func(next echo.HandlerFunc) echo.HandlerFunc {
		return func(c echo.Context) error {
			return nil
		}
	}
}

func failingMiddleware() echo.MiddlewareFunc {
	return func(next echo.HandlerFunc) echo.HandlerFunc {
		return func(c echo.Context) error {
            ctx.String(http.StatusUnauthorized, "Unauthorized")
			return errors.New("Unauthorized")
		}
	}
}

Contribute

Use issues for everything

• For a small change, just send a PR.
• For bigger changes, please open an issue for discussion before sending a PR.
• PR should have:
  • Test case
  • Documentation
  • Example (If it makes sense)
• You can also contribute by:
  • Reporting issues
  • Suggesting new features or enhancements
  • Improve/fix documentation

License

MIT

Documentation

Index

• func Mixed(preserveKeys []string) func(handlers ...echo.MiddlewareFunc) echo.MiddlewareFunc

Functions

func Mixed

func Mixed(preserveKeys []string) func(handlers ...echo.MiddlewareFunc) echo.MiddlewareFunc

Mixed returns a single middleware function composed of the middlewares. Upon being called, it is internally going to call the first middleware, and if there is no error, return immediately with the answer.

Otherwise, it is going to call the next middlewares, and return their response.