xfw: all-in-one REST API

xfw is a self-working API coded in Go:

• It allows anyone to create a fully featured REST API
• it can be used in Go as a library, or as a proxy to launch external commands (e.g. php scripts)

It is based on the all-in-config idea, where you only have a configuration file, and your implementation and it works without no further work.

changelog

• human-readable json configuration
• nested routes (i.e. /user/:id: and /user/post/​:id:​)
• nested URL arguments (i.e. /user/:id: and /user/:id:/post/​:id:​)
• useful http methods: GET, POST, PUT, DELETE
• manage URL, query and body arguments:
  • multipart/form-data (variables and file uploads)
  • application/x-www-form-urlencoded
  • application/json
• required vs. optional parameters with a default value
• parameter renaming
• generic authentication system (i.e. you can override the built-in one)
• generic type check (i.e. implement custom types alongside built-in ones)
• built-in types
  • any - wildcard matching all values
  • int - any number (e.g. float, int, uint)
  • string - any text
  • varchar(min, max) - any string with a length between min and max
  • <a> - array containing only elements matching a type
  • <a:b> - map containing only keys of type a and values of type b (a or b can be ommited)
• generic controllers implementation (shared objects)
• response interface