Generating Heroku App Inventory Lists (CSV) using Python/Pandas

Many businesses need to leave PAAS vendors like Heroku after a while. It's nice to have a list of all the moving parts as part of any migration plan. Here's a quick script to generate one:

When migrating thousands of containers across dozens of teams to Kubernetes or Dockerized environments, it can really help to have an inventory list which describes all the running services on all slugs in the ecosystem. Here's a python script that will do just that:

import requests

import pandas as pd

import csv

 

API_KEY = 'HRKU-API-Token' #get a token from your user profile settings

team_ids = ['dev-test-team’, ‘any-number-of-teams-here-comma-separated’]

 

all_apps_data = []

headers = {

    "Accept": "application/vnd.heroku+json; version=3",

    "Authorization": f"Bearer {API_KEY}",

}

 

# Loop through each team ID and fetch config data

for team_id in team_ids:

    response = requests.get(f'https://api.heroku.com/teams/{team_id}/apps', headers=headers)

    apps = response.json()

    for app in apps:

        app_id = app['id']

        response = requests.get(f'https://api.heroku.com/apps/{app_id}/dynos', headers=headers)

        dynos = response.json()

        response = requests.get(f'https://api.heroku.com/apps/{app_id}/addons', headers=headers)

        addons = response.json()

        for dyno in dynos:

            dyno_data = {

                'app_id': app_id,

                'app_name': app['name'],

                'dyno_id': dyno['id'],

                'dyno_size': dyno['size'],

                'dyno_type': dyno['type'],

                'addons': ', '.join([f"{addon['name']} ({addon['plan']['name']})" for addon in addons]),

            }

            all_apps_data.append(dyno_data)

 

#organize data

df = pd.DataFrame(all_apps_data)

df.to_csv('heroku_apps_data.csv', index=False)

Output is in this format (CSV):

app_id	app_name	dyno_id	dyno_size	dyno_type	addons
UUID	Name01	dyno_UUID	Basic	proc_name0	postgresql-metric-NUM (heroku-postgresql:PLAN), redis-silhouetted-NUM (heroku-redis:PLAN)
UUID	Name01	dyno_UUID	Basic	web	postgresql-metric-NUM (heroku-postgresql:PLAN), redis-silhouetted-NUM (heroku-redis:PLAN)
UUID	Name02	dyno_UUID	Basic	web	postgresql-metric-NUM (heroku-postgresql:PLAN), redis-silhouetted-NUM (heroku-redis:PLAN)
UUID	Name02	dyno_UUID	Basic	proc_name0	postgresql-metric-NUM (heroku-postgresql:PLAN), redis-silhouetted-NUM (heroku-redis:PLAN)

If you're looking to migrate from Heroku into AKS, GKE, EKS, or some other Kubernetes solution, we've got your back. Reach out to talk to our certified experts for your next cloud migration project.