I want to host my nodejs server application in a sub route in iis. What i want to do is host my application as such localhost:3000/node/ not localhost:3000/.
This can be achieved by
changing endpoints from
app.get('/', moduleRoutes.root);
app.post('/auth/signup/', authenticationRoutes.signup);
to
app.get('/node/', moduleRoutes.root);
app.post('/node/auth/signup/', authenticationRoutes.signup);
but i don't want to change all the api endpoint every time I change my hosting path.
another is
app.use((req, res, next) => {
//change request location from here by changing
req.url = req.url.replace('localhost:3000/node/', 'localhost:3000')
//somthing like that
authorization.memberinfo(req, res, next);
});
but this does not look like a proper way to achieve this. Please direct me toward the right direction. Thanks.
You could just mount a router at /node and just add all of your routes to that router instead:
// These three lines could even be placed in a separate file that you
// would `require()` and use in your app.js
var router = express.Router();
router.get('/', moduleRoutes.root);
router.post('/auth/signup/', authenticationRoutes.signup);
app.use('/node', router);
Related
I've created a NodeJS Express app. But my express route is invocking multiple routes function, one after another, but I only need one at a time.
My express app.js
app.use(routes)
Express router:
const router = express.Router();
router.post("/product", controller.productFunction)
router.post("/user", controller.userFunction)
router.get("/:id", idController.getId)
Whenever I create a post request for "/product" route, first the productFunction is invocked, but then the "/:id" routes getId function is also get invocked. Same thing happen for /user route as well. Always /:id route is getting invocked.
Is there any way to prevent this?
I even tried this way, but after the homepage loading then again it invockes getId function.
app.get("/", (req, res, next) => {
res.sendFile(..........);
});
app.use(routes);
I am sure that this is not an issue with the router itself.
You can't skip from POST to GET handling. So invocations are caused by different requests.
router.get("/:id", idController.getId) kind of wild card, and <server_url>/favicon.ico will trigger it
If you check it via browser it tries to get favicon or smth else and invokes this handler.
Try to make POST request via curl/Postman and idController.getId should not be called.
It is risky to serve static and process requests on a same level.
You can add some prefix to all your request, like that app.use('/api', routes); then static file will be available on /<file_name> and all server logic will be under /api/<request>
Looking for a good example of how to implement a node API gateway for a microservice application, I understand the purpose of having a gateway, I am just not sure of how to implement this without just adding another level of RESTful route calls. To me a gateway is supposed to just direct the route to the microservice.
API Gateway port 3000
router.use('/microservicename/*', function (req, res, next) {
**code that will direct to microservice**
});
Microservice1 server.js port 3001
var express = require('express');
var app = express();
var routes = require('./routes/routes');
app.use('/microservicename', routes);
var server = app.listen(3001, function () {
console.log('Server running at http://127.0.0.1:3001/');
});
Microservice1 router.js (3001)
router.get('/route1', function (req, res, next) {
//get route code
});
router.post('/route2', function (req, res, next) {
//post route code
});
router.put('/route3', function (req, res, next) {
//put route code
});
router.delete('/route4', function (req, res, next) {
//delete route code
});
Assuming your microservice is its own http server (if not, then please explain more about its architecture) and assuming your API is designed such that you can easily identify which routes go to which microservice without specifying every single possible route, then you should be able to create one route handler for an entire microservice (or at worst a very small number of route handlers for the entire microservice).
For example, if all requests that start with /api/foo go to the foo microservice, then you should be able to have a single route handler that catches /api/foo/* and proxies that to the microservice. If you have common middleware for all requests (such as middleware that runs or verifies an authentication process), that can be in the stack before the proxy route handlers so it will be invoked for all requests that go to the microservice.
If you don't have a 1-to-1 mapping between incoming API calls and microservice APIs, then you have to create a mapping between the two. Depending upon the level of mismatch, you may be able to do this with a table-driven approach where you specify what matches with what in a table and then one piece of generic code processes all the definitions in the table.
I am currently trying to learn implementing RESTful APIs using Node.js & Express. Using this tutorial: http://code.runnable.com/U7bnCsACcG8MGzEc/restful-api-with-node-js-express-4
I created each file on my local drive and tried running the code using node server.js..However I kept on getting an error. Why might be causing this?
The code you chose to run is only routing requests for urls that begin with /api as you can see here:
app.use('/api', router);
On top of that, the routes it accepts are /players and /player/:id:
router.get('/players', function(req, res, next) {
res.json({ players: players.getAllPlayer() });
});
router.get('/players/:id', function(req, res, next) {
var player = players.getPlayerById(req.params.id)
res.json(player);
});
For every request, including the routes above, it outputs the method and url to console.log.
Even when it fails to get /, you should see GET / in your console.
Now try to access this url: 0.0.0.0:8080/api/players
It works, right?
Basically what happened was we have an app server that is running express and routes to a bunch of SPAs. This was great but then we wanted to have an app that runs its own node/express script (ghost). I can't figure out how to set the route /ghost to go to ./webapps/ghost/index.js
Is this just not possible?
You need to redirect incoming requests to the ghost express instance. I have done so in my personal site by adding a /blog route to my primary express instance and forwarding any request to it to the ghost expresss instance. Check it out here: https://github.com/evanshortiss/evanshortiss.com/blob/master/server.js
The basic gist is that you do the following:
app.use('/blog', function(req, res, next) {
// Forward this request on...
return next();
}, ghostServer.rootApp); //...but we forward it to a different express instance
If you're running both as separate processes then you could use Apache or nginx to just redirect the requests. If you absolutely must use an express application to forward requests then try the node-http-proxy module.
If you need to proxy from express you could do this using the http-proxy module by Nodejitsu:
var proxy = require('http-proxy').createProxyServer({});
app.use('/blog', function (req, res) {
// You may need to edit req.url (or similar) to strip the /blog part of the url or ghost might not recognise it
proxy.web(req, res, {
target: 'http://127.0.0.1:'+GHOST_PORT
});
});
Hello I want to bind the URI of my app, for example lets imagine this scenario.
I am running express app on port 3000,
nginx on port 80, proxying requests of URI api to port 3000
And have this route on express
// Home
app.get('/', function(req, res) {
res.send('Hello!');
});
If I try access from localhost:3000 I get Hello! in my browser (that's expected),
but if I try to access from localhost/api I will get an error, of course he can't find the route I'm tryng to access.
If I change app.get to app.get('/api/... it works as expected, but this isn't what I want... I would need to prepend api in every route, there must be another way to do this, something like:
URI binding
URI filter ??
I read the documentation but can't find anything to solve my problem, and I'm thinking of doing a package that does URI bindings on express to solve this problem.
See my answer here for a solution that lets you point every request matching a leading /api to a particular express app. In the linked case, the user wanted to do some things without the leading fragment. You could leave out the app.use(app.router) for the main express app since you only care about the /api/ routes.
<snip>
var http = require('http');
var express = require('express');
var desktopApp = express();
var mobileApp = require('./mobile.js');
desktopApp.use('/mobile', mobileApp)
desktopApp.use(desktopApp.router);
</snip>
Also I am pretty sure that you can actually rewrite request.url yourself. I have never tried this so I can't promise it works! see docs http://expressjs.com/4x/api.html#req.originalUrl Also be sure to put this at the very top of your routing functions, so it is executed before any subsequent routes.
app.all('*', function(req, res, next){
req.url = req.url.replace(/^\/api/, '');
//the regex replaces leading /api with empty string
//req.originalUrl will keep the old url
next();
});