SHRYNERY

On Request

• Keep track of the following
  • The request method.
  • The request path.
  • The client ip.
  • The request payload.
  • The request headers.
• Convert the request method to lower case.
• Remove repeating slashes from the request path.
• Extract the query parameters from the request path.
• Parse the request payload.
• Register all primary dependences
  • Configuration
  • Router
• Create all primary dependency instances
• Register all middleware defined in the config files to the router depenency instance.
• Register all providers defined in the config files.
• Boot all providers defined in the config files.
• Resolve the request.
  • Run all global middleware.
  • Find the route that matches with the request path.
  • Run all middleware groups associated with the route.
  • Run all lone middleware associated with the route.
  • If any middleware resolves, return the result as response; else, return the resolved route action as response.

Middleware

• Middleware can be functions or classes that extend the core/Middleware class.
  • As a function, when called, 2 arguments will be passed.
    • The request
    • The next callback
  • As a class, the will be an invoke method which will be called when the middleware is encounted; and the arguments described above will be passed to said function.
• All middleware are defined in the config/app.js file.
• There are 3 types of middleware
  • Global middleware – runs everytime a request is made.
  • Grouped middleware – contains a set of middleware which run only if assigned to a matching route.
  • Lone middleware – runs only if assigned to a matching route.
• Group and Lone middleware are defined as key-middleware pairs.
• Middleware can be assigned to routes by using their definition keys.

Routes

• Routes are used to identify what logic to run given some method and path.
• All active routes must be register to the router in order to work.
• To register a route, you'll need to specify the following.
  • path - A string that will be coverted to the regex for request resolution.
  • methods - An array of methods to be compared to during resolution.
  • action - A function that will be run to finalize the resolution.
  • middleware (optional) - An array of middleware that are run before the action during resolution.
  • name (optional) - A tag to reference the route by.
• Route parameters can be described in the routes path during registration and definition.
• Bindings – functions that transform route parameter values – can also be registered to each route.