Bundle mania

I ended up using Heroku’s bundles feature a fair bit today. For those who have not played with this yet, a bundle is essentially a zip/tar file containing all the code from your application along with a dump  of your database. From the help file:

bundles                      # list bundles for the app
bundles:capture [<bundle>]   # capture a bundle of the app’s code and data
bundles:download             # download most recent app bundle as a tarball
bundles:download <bundle>    # download the named bundle
bundles:animate <bundle>     # animate a bundle into a new app
bundles:destroy <bundle>     # destroy the named bundle

In general its pretty intuitive. The commands do what you expect; “bundles:capture” captures a bundle, while “bundles:download mybundle” downloads the bundle named mybundle. With my expectations set by using the other commands I tried out bundles:animate

mike@sleepycat:~/projects/myapp$ heroku bundles
2010-03-16        complete 03/17/2010 14:25
mike@sleepycat:~/projects/myapp$ heroku bundles:animate 2010-03-16
Animated myapp 2010-03-16 into http://myapp-2010-03-16.heroku.com/ | git@heroku.com:myapp-2010-03-16.git

Given the description “animate a bundle into a new app” I was expecting a fully functional copy of my application waiting for me at that new address, based on the code and the database dump contained in the bundle. Instead I get:

mike@sleepycat:~/projects/myapp$ heroku console –app myapp-2010-03-16
!   myapp-2010-03-16 has an empty code repository. Push and try again.

When I log in and look at my account, sure enough the repository is empty and even more surprising:

Data size

0 Bytes in 0 tables

So if it does not load any of the code from my bundle, and doesn’t use the database dump to create a database, how does this differ from creating a new app?

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