hapijs - serve static files from directory handler with variable path name - node.js

Question

I'm trying to do something like this in my routes file using hapijs + inert plugin
{
method: 'GET',
path: '/l/{path*}',
handler: {
directory: {
path: (req) => {
const defaultDir = '/public';
return getHostInfo(req.headers.host).then((d) => {
if (!d || !d.directory) return defaultDir;
return d.directory;
}).catch((e) => {
return defaultDir;
});
}
}
}
},
path parameter expects a string, array or function which returns a string or array...in my case, my function returns a promise...so it doesn't work.
I tried adding hapi-as-promised package which modifies reply function to support then method but did't work.
Basically I want to serve static assets from one directory or another depending on the host header value.

Answer 1

Well, the only thing i have in my mind is this hack. First, you have to make an extension point to make your async stuff:
server.ext({
type: `onPreHandler`,
method: (request, reply) => {
const defaultDir = '/public';
return getHostInfo(request.headers.host).then((d) => {
if (!d || !d.directory) {
request.app.dirPath = defaultDir;
return;
}
request.app.dirPath = d.directory;
}).catch((e) => {
request.app.dirPath = defaultDir;
}).then(() => {
return reply.continue();
});
}
});
And then the route:
{
method: `get`,
path: `/l/{path*}`,
handler: {
directory: {
path: (request) => {
return request.app.dirPath;
}
}
}
}
I don't know how right is this way, but i tested and it worked. So i hope this helps. And i gotta notice, using node to server files on production isn't a common way by some reason.