Created
August 6, 2010 12:05
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heroku rake db:pull --remote staging
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| require 'heroku' | |
| require 'taps/operation' | |
| class Database | |
| def self.pull(*args) | |
| new.pull(*args) | |
| end | |
| def initialize(uri=ENV['DATABASE_URL']) | |
| @uri = uri | |
| end | |
| def pull(*args) | |
| options = args.extract_options! | |
| application = args.shift | |
| username = args.shift || ENV['DB_PULL_USERNAME'] | |
| password = args.shift || ENV['DB_PULL_PASSWORD'] | |
| if options[:unless] == application | |
| raise 'Cannot pull into self.' | |
| else | |
| Session.new(application, username, password).pull(@uri) | |
| end | |
| end | |
| private | |
| class Session | |
| def initialize(application, username, password) | |
| @session = Heroku::Client.new(username, password).database_session(application) | |
| end | |
| def pull(local_uri) | |
| STDOUT.sync = true | |
| STDERR.sync = true | |
| Taps::Pull.new(local_uri, remote_uri, options).run | |
| end | |
| private | |
| def options | |
| { :default_chunksize => 1000, :session_uri => session_uri } | |
| end | |
| def remote_uri | |
| @session['url'] | |
| end | |
| def session_uri | |
| @session['session'] | |
| end | |
| end | |
| end |
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| namespace :db do | |
| desc "Copy production data into the current app's database." | |
| task :pull => :environment do | |
| Database.pull 'prancing-igloo-42', :unless => ENV['APP_NAME'] | |
| end | |
| end |
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Part a Rails app I'm working on.
database.rblives inlib,databases.rakeinlib/tasks, of course, and I've includedherokuandtapsin myGemfile.To configure, set
ENV['DB_PULL_USERNAME']andENV['DB_PULL_PASSWORD']in your staging app to the credentials of a user with access to your production app, and replaceprancing-igloo-42with the name of your production app.