Resttrafik

This project is no longer hosted online

Resttrafik is a side project of mine. It uses the Swedish tagtider API to fetch the train schedule and save all the late/canceled trains to a database. A simple web page is used to preview the data.

It was an attempt from my side to create a full-stack app and host it myself, merely for practicing. This project is not under active maintenance and might not work by the time this is read.

Technologies used

Node
TypeScript
Express
Docker
Docker-compose
Prisma
Postgres
Nginx
React
Tailwind
Firebase (for auth)
Ubuntu
PM2

How it works

Everything is hosted on a single Ubuntu instance using docker-compose. API, web and a worker (all written in TypeScript).

The web worker runs once every minute to fetch the train schedule based on the parameters you've defined. It saves the ones that follow the defined rules in a Postgres database using Prisma.

To access the data a React page is served which uses Firebase to authenticate the user. It's free to use, you just need to sign in with Google.

Nginx is used as a reverse proxy.

Prisma commands

# migration for database
npx prisma migrate dev --name init

# generate js files
npx prisma generate

Setup database

make sure to use db as host in the database url.
Run docker-compose up --build
Change temporarily from db to localhost.
Run npx prisma migrate dev on host machine to migrate database
Change back to db.

Alternatively, start the docker-compose build and run the migrate.sh file.

Migrate

Update prisma.schema file.
Start application like usual: docker-compose up --build
Follow the steps on Setup Database above.
1. Run the application
2. Change db connection string host to localhost
3. Run migration script
4. change back

Run application

Change directory to docker directory.

# build in detached mode (for development, web app separetly)
docker-compose up --build -d

# build prod
docker-compose -f docker-compose.prod.yml up --build -d

# see logs
docker-compose logs

# stop the application
docker-compose down --remove-orphans

Currently, the variables the separate the build are in .env and .env.prod.

Env variables

All env variables are currently located in the .env file in the api folder and the prisma folder. Update those if you want to change the program.

Access database

SSH into the host server and expose port 5002 through the connection, that way you can access adminer locally.

Update ~./.ssh/config and add something like this:

Host hetzner
HostName 65.108.94.80
User root
ForwardAgent yes
LocalForward localhost:6002 localhost:5002

Access it with ssh hetzner in this case.

Setup nginx

Nginx is used as a reverse proxy directly in Ubuntu. You can change config in the nginxfolder. To use the new config you need to do the following.

# copy file
cp nginx.conf /etc/nginx/nginx.conf

# restart nginx
sudo systemctl reload nginx

Basic commands

# status
sudo sustemctl status nginx

# start
sudo systemctl start nginx

# stop
sudo systemctl stop nginx

# restart
sudo systemctl reload nginx

# launch at boot
sudo systemctl enable nginx

# disable at boot
sudo systemctl disable nginx

banjo / resttrafik