Test REST Consumers against a Mock

PedromDimas

Hello, I am trying to test the following scenario:
I publish a mesage to a topic called rest, and then A rest Consumer picks that mesasge up and sends it to the mock server.

Is this scenario possible?
If so, i'll be running a postman mock and Solace will be running localy on Docker(I think i might run into some ssl problems).

arih

hi @PedromDimas

Yes that is possible with RDP, where basically you'll have a Queue subscribing to the topic and then binding that Queue to a REST Delivery Point that will act as a REST client for your mock server.

Here's one code labs that might be useful.

In addition to that, couple of points I'd like to promote around RDP:

• learn more about the dynamic stuff, which is the substitution expression documented here.
• the topic can be many, and with finer grain topic name, the Queue can then subscribes with a wildcard to make things more interesting and flexible.

PedromDimas

Hello @arih !
Many thanks for the information!
I will analyse the materials that you mentioned!

PedromDimas

Hello again @arih
After following the steps on the code labs i got an error which is wierd and i dont know how to solve this.

So, i configured ngrock to forward localhost:3000 where i had a mock server running.
After that i followed all the steps on the code lab and ended up with this error:

Destination unreachable seemed wierd so i opened a terminal inside the docker container of solace and did a curl to the ngrock and it worked.
Does any one know why this happened?

arih

Hi @PedromDimas

I'm not familiar with Ngrock, or maybe it's Ngrok?

While I'm looking at that, can you try curl-ing host.docker.internal:3000 from Solace container first?

arih

Wait, the error there is for the 'last' failure, doesn't mean it's still happening. I just realised the op status is actually Up in the picture there

check the RDP page and REST consumer page if everything is green / up.'

if you still don't see the event in your mock server, then something else is going on.

PedromDimas

This is my mock setup:
the server running on my localhost:3000

ngrok tunneling it

a queue called rest-q

subscribed to topic rest

One rest client called rdp-rest
which is down


One rest Consumer
which is down


one queu-binding to rest-q

This is my brest consumer

The way i am testing it is i use the try me and publish to rest topic

Solace is running in docker on my local machine.

the curl

the curl to my ngrok

The solace container can reach my ngrok.
I do not know where i failed

PedromDimas

And @arih
Thank you so much for the help!

arih

Okay, so I did some tests on my own, and it seems Ngrok can give you different destination each time. I've seen the remote endpoint sometimes up and sometimes down and having different address each time

When it works it works, but when it's not it can be a peer TCP closed, or it can be unreachable, or other errors. So for now I think relying on Ngrok is not a good idea

I'm assuming Ngrok is just for dev or for convenience anyway, not production setup right?

So I suggest to just rely on docker networking instead. What OS are you running? I just searched and it seems for Linux you need to enable the host.docker.internal first. See here: https://medium.com/@TimvanBaarsen/how-to-connect-to-the-docker-host-from-inside-a-docker-container-112b4c71bc66

PedromDimas

Ngrok is being used just for conevenience while developing, no production.

I'll try to use docker netwoking.
Thank you!