如何导出中心变量参考

Question

I'm using Hapi.

I'm also using NES client to connect to another node instance. In order to access this socket from the routes, I attach it to the server variable like so:

exports = async () => {
  //api
  var server = new Hapi.Server({
    host: process.env.WEB_HOST || '127.0.0.1',
    port: process.env.WEB_PORT || '8080'
  });

  // register plugins
  await server.register(plugins);

  // add routes
  await routes(server);

  server.socket = new Socket(identifier); // uses NES

  return server;
}

I want to access the socket from a library file. How do I do this without having to pass it the server variable each time? When I try to module.exports the server, it never gives me a reference, only a version of the variable at the time it was exported.

Answer 1

Have you tried server.decorate. If I understood correctly , you want to access your socket variable from routes. Why not just create basic plugin and create your socket instance and pass that into server object. For example;

exports.plugin = {
    async register(server, options) {                 
        server.decorate('server', 'socketConn', new Socket(identifier));
    },
    name: 'socket-connection'
};

and in your routes you can access this variable as request.server.socketConn .