Webhook-simple-service (WSS)

Purpose:

Create two sample services and demonstrate data sharing by registering webhooks from one service to another. Based on event webhook should be invoked.

Server and Collector

In this repo, there are two services written in Golang.

• Server: A simple service that runs the server. It exposes the webhook to record and show the free memory recorded by collector. The wss-server always installed on the control node.
• Collector: A simple service to collect the free memory on the system and sends it to the server every 10 seconds.

Instructions:

1. Ensure Helm has been installed.
2. Update the serverAddr of wss-collector to the ip of control node.
3. Run helm command to install wss-server and wss-collector. NOTE: Ensure wss-server is running before installing wss-collector.

   sudo helm install wss-server helm_chart/wss-server/
   sudo helm install wss-collector helm_chart/wss-collector/
   

4. You can login to http://localhost:5000/memory/show (control-node) to view the free memory of the worker node where the wss-collector installed. You can also run curl http://localhost:5000/memory/show on control node to check the collected data.

Build Image:

1. Ensure docker has been installed.
2. To build server: sudo docker build -t wss-server -f Dockerfile_server .
3. To build collector: sudo docker build -t wss-collector -f Dockerfile_collector .