Shell commands for development, staging, and production parity for Heroku apps.

On OS X, this installs everything you need:

brew tap thoughtbot/formulae
brew install parity

On other systems you can:

1. Download the package for your system from the releases page
2. Extract the tarball and place it so that /bin is in your PATH

Parity requires these command-line programs:

git
heroku
pg_restore

On OS X, these programs are installed as Homebrew package dependencies of the parity Homebrew package.

Backup a database:

production backup
staging backup

Restore a production or staging database backup into development:

development restore production
development restore staging

Restore a production database backup into staging:

staging restore production

Push your local development database backup up to staging:

staging restore development

Deploy from master, and migrate and restart the dynos if necessary:

production deploy
staging deploy

Open a console:

production console
staging console

Migrate a database and restart the dynos:

production migrate
staging migrate

Tail a log:

production tail
staging tail

Use redis-cli with your REDIS_URL add-on:

production redis-cli
staging redis-cli

The scripts also pass through, so you can do anything with them that you can do with heroku ______ --remote staging or heroku ______ --remote production:

watch production ps
staging open

Parity expects:

• A staging remote pointing to the staging Heroku app.
• A production remote pointing to the production Heroku app.
• There is a config/database.yml file that can be parsed as YAML for ['development']['database'].
• The Heroku apps are named like app-staging and app-production where app is equal to basename $PWD.

If you have Heroku environments beyond staging and production (such as a feature environment for each developer), you can add a binstub to the bin folder of your application. Custom environments share behavior with staging: they can be backed up and can restore from production.

Using feature environments requires including Parity as a gem in your application's Gemfile.

gem "parity"

Here's an example binstub for a 'feature-geoff' environment, hosted at myapp-feature-geoff.herokuapp.com.

#!/usr/bin/env ruby

require "parity"

if ARGV.empty?
  puts Parity::Usage.new
else
  Parity::Environment.new("feature-geoff", ARGV).run
end

Please see CONTRIBUTING.md for details.

See guidelines in RELEASING.md for details

Parity is © 2013-2015 thoughtbot, inc. It is free software, and may be redistributed under the terms specified in the LICENSE file.

Parity is maintained and funded by thoughtbot, inc. The names and logos for thoughtbot are trademarks of thoughtbot, inc.

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