Microservices with express gateway : routes return 404 error

Question

My microservice is running in port 3000 and I am trying to proxy the request via express-js gateway

But I got a problem with accessing routes in microservice

MICRO SERVICE ROUTE

app.use('/sample',(req,res)=>{
   res.json({
     message:'Run with microservice'
   })
})

And I am able to access this route http://localhost:3000/sample .

Here is my gateway.config.yml .

http:
  port: 3004
admin:
  port: 9876
  hostname: localhost
apiEndpoints:
  test:
    host: localhost
    paths: '/test'
serviceEndpoints:
  test:
    url: 'http://localhost:3002/'  
policies:
  - basic-auth
  - cors
  - expression
  - key-auth
  - log
  - oauth2
  - proxy
  - rate-limit
pipelines: 
  test:
    apiEndpoints:
      - test
    policies:
      - proxy:
          - action:
              serviceEndpoint: test
              changeOrigin: true              

When I try to access my microservice route via http://localhost:3004/test/sample returns cannot get route error .

Answer 1

in general, make sure to review our Path Management Piece . This will help you understand what's the PATH that gets forwarded to your service.

Talking specifically about your question — if you want to forward a path that can "continue" beyond the specification, you need to change the path definition from /test to /test* . This instructs the gateway that the path is not complete and something else might be provided.

Also, on the service side, I'd change the app.use to app.get so you're listening only for the VERBS you're interested.

Cheers!

Answer 2

You have to make a get in you express-microservice.

Something like this.

 app.get('/test',(req,res)=>{
       res.json({
         message:'Run with microservice'
       })
    })

Answer 3

I would go with Janus - https://hellofresh.gitbooks.io/janus/ for API Gateway Management as it specializes specifically on that. Have a look and let me know what you think.