I would probably write something like this
var baseUrl = config.CDN.baseUrl;
CDN.use(baseUrl, checkFileSanity, getRealPath, serveFile);
function checkFileSanity (req, res, next) {
var filepath = path.join(config.base, '/cdn', req.url);
fs.lstat(filepath, function (err, stat) {
if(err) return next(err);
stat.path = filepath;
req.fileStats = stat;
next();
});}
function getRealPath(req, res, next) {
if(req.fileStats.isSymbolicLink()) {
fs.readlink(req.fileStats.path, function (err, realpath) {
if(err) return next(err);
req.realpath = realpath;
next();
});
}
else {
res.status(404).end();
}}
function serveFile (req, res, next) {
fs.createReadStream(req.realpath).pipe(res);}
On Monday, 15 September 2014 18:28:28 UTC+2, Ingwie Phoenix wrote:
>
> Hai, everyone.
>
> So I just figured out that Connect’s static file servers dont work well
> with symlinks…so I had tow rite myself a little workaround, a fallback
> router, per-se. But whilst I did so, I had a nice meeting with the callback
> hell. Here’s my code:
>
> CDN.use(config.CDN.baseUrl, function(req, res, next){
> if(err) { next(); throw err; }
> fs.lstat(config.base+"/cdn"+req.url, function(err,stats){
> if(stats.isSymbolicLink()) {
> fs.readlink(config.base+"/cdn"+req.url,
> function(err, linkstr){
> if(err) throw err;
> log.info("Redirecting request \""+req.url+"\"
> to \""+linkstr);
> fs.readFile(linkstr, function(err, data){
> if(err) throw err;
>
> res.writeHead(200,{"Content-type":"text/html"});
> res.end(data);
> });
> });
> }
> });
> });
> });
>
> Okay…thats lots. And how does one get around this and into a bit of nicer
> code? It almost looks like a little pyramid there…
>
> Kind regards, Ingwie.
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