Real-time Chat Application

Quick Start

Install Minikube and Skaffold, then run:

minikube start
skaffold dev

Then, in another terminal start the CLI:

cd yap-cli
go run cmd/main.go

Protocol Buffers

To generate the protocol buffers, run:

buf generate proto

ScyllaDB

For ScyllaDB, you can do

kubectl port-forward svc/chat-db 9042:9042

Alternatively, you can start a scylla pod using cqlsh like this:

Then you can run some queries:

kubectl exec -it $(kubectl get pods -l app=scylla -o jsonpath='{.items[0].metadata.name}') -- cqlsh

USE chat;
DESCRIBE TABLES;
select * from messages;

Connecting to PostgreSQL Locally

Pick a postgres node (postgres-69c569c6c9-wj2zx):

k get po
NAME                            READY   STATUS    RESTARTS   AGE
auth-service-7b47d6d967-cj82q   1/1     Running   0          26s
postgres-69c569c6c9-wj2zx       1/1     Running   0          28s
yap-api-75dbfb86b5-c9h9d        1/1     Running   0          24s

Port forward it:

kubectl port-forward postgres-69c569c6c9-wj2zx 5432:5432

or just do

kubectl port-forward svc/auth-db 5432:5432

Use a Database Driver and a connection string similar to the following:

postgres://postgres:your-password-here@auth-db:5432/postgres?sslmode=disable

I like DataGrip or the IntelliJ Postgres Driver.