How to get Heroku app name/URL from inside the app

Question

I'm working on a registration agent for http://www.dif.io to enable tracking of apps deployed on Heroku. I'm missing some pieces of information for the deployed app. The registration agent is a script (usually written in the app native language) which is designed to be executed after deployment (heroku run for example or automaticaly via some post deploy hook if any).

How do I get the application name, URL and some UUID identifier from inside the app, preferably from some ENV variables? I need it to be portable between languages.

I explored a sample Python application and all of the above info is missing. There are only couple more ENV variables related to Python. The dyno hostname however looks like an UUID.

I could use something like this but without the user/password requirements: https://addons.heroku.com/provider/resources/technical/reference/app-info

Please point me to the correct docs.

Answer 1

The command app:info no longer seems to be a heroku command but just info will do the same thing so:

heroku info -s | grep web_url | cut -d= -f2 

or to set the variable

heroku config:set HEROKU_URL=$(heroku info -s | grep web_url | cut -d= -f2) 

Answer 2

Dyno Metadata was introduced December 2015. It’s currently a labs feature which must be enabled first.

Dyno metadata gives the dyno easy access to information about the app and environment. Examples of available dyno metadata include details about the release, dyno size, application name as well as the unique identifier for the particular running dyne.

https://devcenter.heroku.com/articles/dyno-metadata