(Quick Reference)

1 Introduction - Reference Documentation

Authors: Luís Duarte

Version: 0.0.3

1 Introduction

The Grails middleware plugin provides a convenient DSL to create an HTTP Request/Response Pipeline.

All you have to do is create a Middleware class

grails create-middleware com.myapp.MyMiddleware

Implement it's behaviour

package com.myappclass MyMiddleware {
   void processRequest(GrailsWebRequest grailsWebRequest) {
       grailsWebRequest.request.setAttribute("SomeAttribute", "1234")
   }
   void processResponse(GrailsWebRequest grailsWebRequest) {
       grailsWebRequest.response.setHeader("X-SomeHeader", "Middleware Example")
   }
   void processException(GrailsWebRequest grailsWebRequest, Throwable exception) {
       grailsWebRequest.response.setHeader("X-SomeException", exception.class.simpleName)
   }
}

And register it in the Config file

grails:
    middleware:
        order:
            - com.myapp.MyMiddleware

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