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request-middleware-framework

v0.0.5

Published

A framework to intercept HTTP calls made via the request HTTP client.

Downloads

9

Readme

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.

License

MIT