request-middleware-framework
A framework to intercept HTTP calls made via the request HTTP client.
Installation
npm install request-middleware-framework
Middleware Definition
The framework simply expects any middleware to be a function of form:
function(options, callback, next) {
// Add custom logic here.
next(options, callback);
}
The next() call will call the next middleware in the chain. To add any logic on the response, you can modify the callback as follows:
function(options, callback, next) {
var _callback = function(err, response, body) {
// Add custom response logic here.
callback(err, response, body);
};
next(options, _callback);
}
If instead you want to completely short-circuit the HTTP call, you can simply call the callback and provide your own error or response:
function(options, callback, next) {
var body = "Everything's fine."
callback(null, { statusCode: 200, body: body }, body);
}
Examples
Once you've defined your middleware, you can simply register it by creating a new framework object, and then getting the request object:
var requestMiddlewareFramework = new RequestMiddlewareFramework(require("request"), middleware);
var request = requestMiddlewareFramework.getMiddlewareEnabledRequest();
You can then use returned request object just like you normally would.
For a full example inside an express app, see the sample directory within this repository.