Sinatra bootstrap

This is an opinionated Sinatra application with conventions similar to Rails. What includes:

• ActiveRecord
• Sidekiq

Executables

In the bin folder there are scripts that let you:

• Start a cosole: bin/console
• Start the webapp: bin/webapp
• Start workers: bin/workers

Also the repo contains a Makefile with all you need.

Database

The app is configured to use Postgres by default, you can check and change the configuration in the config/database.yml file.

If you don't want to use a database, you can remove the related dependencies (sinatra-activerecord, pg and pagy) and its usages.

Connection pool

The connection pool is configured in the activerecord initializer and uses an environment variable named DATABASE_CONNECTION_POOL.

Commands

Sinatra activerecord provides rake commands to perform database actions like Rails does.

Create migration

For example, to create a new migration you can run: bundle exec rake db:create_migration NAME=migration_name

Webserver

This app uses puma as the webserver which you can configure with environment variables: PUMA_WORKERS, PUMA_THREADS, WEBSERVER_PORT.

CORS

This app uses the rack-cors gem to provide cross domain access. You can configure this further in the config.ru file.

Application

All your business logic and domain classes are intended to live in the lib folder. In this base application you have a User model example and not much more.

Boot

All your classes are loaded using the require_all gem inside the lib/boot.rb file. You can require any other dependency you need in that file.

Secrets

One thing that I like is to use environment variables for secrets (they are defined in config/secrets.yml like Rails) and raise an exception if there is one missing (how many times have you deployed an application and forgot to set an env variable?). For this I created a class called Application which handles all of that and has some other configuration like the logger.

You can use your secrets like: Application.secrets.redis_url.

Web application

Sidekiq

The Sidekiq configuration is pretty much the default in this repo. The config files are located in config/sidekiq.yml and lib/initializers/sidekiq.rb.

Web UI

The Sidekiq's web UI is loaded in /sidekiq using basic authentication. You can change this in the config.ru file. The environment variables to set user and password are SIDEKIQ_AUTH_USER and SIDEKIQ_AUTH_PASS respectively.

Docker

Docker configuration is provided and you can run the entire application using: docker-compose up.