83 lines
1.8 KiB
JavaScript
83 lines
1.8 KiB
JavaScript
/**
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* Expose `Route`.
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*/
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module.exports = Route;
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/**
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* Module dependencies.
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*/
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var asteroid = require('asteroid')
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, AsteroidModule = require('asteroid-module')
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, HttpContext = require('./http-context')
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, debug = require('debug')('asteroid:resource')
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, util = require('util')
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, inherits = util.inherits
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, assert = require('assert');
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/**
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* Create a new `Route` with the given `options`.
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*
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* @param {Object} options
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* @return {Route}
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*/
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function Route(options) {
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AsteroidModule.apply(this, arguments);
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// throw an error if args are not supplied
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assert(typeof options === 'object', 'Route requires an options object');
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assert(options.path, 'Route requires a path');
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// create the sub app
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var app = this.app = asteroid();
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this.options = options;
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debug('created with options', options);
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this.on('destroyed', function () {
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app.disuse(this.options.path);
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});
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}
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/**
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* Inherit from `AsteroidModule`.
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*/
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inherits(Route, AsteroidModule);
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/**
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* Mount the sub app on the given parent app at the configured path.
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*/
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Route.prototype.mount = function (parent) {
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this.parent = parent;
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parent.use(this.options.path, this.app);
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}
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/**
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* Create an http context bound to the current resource.
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*/
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Route.prototype.createContext = function (req, res, next) {
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return new HttpContext(this, req, res, next);
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}
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/**
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* Override `on` to determine how many arguments an event handler expects.
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*/
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Route.prototype.on = function () {
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var fn = arguments[arguments.length - 1];
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if(typeof fn === 'function') {
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// parse expected arguments from function src
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// fn.listener handles the wrapped function during `.once()`
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var src = (fn.listener || fn).toString();
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fn._expects = src.split('{')[0].split(',').length;
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}
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AsteroidModule.prototype.on.apply(this, arguments);
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} |