jaycdave88/datadog-rails-trace repository overview

⁠Rails 5.2 example

Blog application built using the official Rails tutorial⁠. This version is meant to test tracing compatibility issues with Rails.

⁠Compatibility stack

• Ruby 2.5.1
• Rails 5.2.1
• MySQL adapter (mysql2)
• Redis 4.0.1
• Unicorn 5.4.1
• Passenger 5.3.4

⁠Backing services

• MySQL 8.0
• Redis 4.0.11

⁠Getting started

Launch all services (it will trigger a Docker build):

docker-compose up

When the MySQL service is up and running, launch in another console the following command to create the application database:

docker-compose run --rm web rake db:create
docker-compose run --rm web rake db:migrate

Back in the first console, stop docker with CTRL-C, then:

docker-compose stop
DD_API_KEY=<your Datadog key> docker-compose up

The above sends data to your Datadog account if the DD_API_KEY is valid.

Alternatively, if you use Direnv, you can copy the .envrc.sample file to .envrc, insert your API key, then run direnv allow . to load the API key into your environment. In which case you can run to start the application:

docker-compose up

⁠Note about the build

Dependencies listed in the Gemfile are installed at build time, so if you need to change them for any reason, remember to remove then re-build the image via:

docker-compose build

⁠Using the example application

Access the blog at http://localhost:3000/⁠ and login using the default user/password me/123456.