47 lines
928 B
JavaScript
47 lines
928 B
JavaScript
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var http = require('http');
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var koa = require('..');
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var app = koa();
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// logger
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function logger(next){
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return function *(){
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var start = new Date;
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yield next;
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var ms = new Date - start;
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console.log('%s %s - %s', this.method, this.url, ms);
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}
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}
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// passing any middleware to this middleware
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// will make it conditional, and will not be used
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// when an asset is requested. This is a modular
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// approach to conditiona-middleware.js
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function ignoreAssets(mw) {
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return function(next){
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return function *(){
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if (/(\.js|\.css|\.ico)$/.test(this.path)) {
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yield next;
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} else {
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yield mw(next);
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}
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}
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}
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}
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app.use(ignoreAssets(logger));
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// sometimes it's useful to apply some
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// ad-hoc logic to enable middleware, for
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// example ignoring a logger on asset requests:
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app.use(function(next){
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return function *(){
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this.body = 'Hello World';
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}
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});
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app.listen(3000);
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