crazy_ivan

= Crazy Ivan

Crazy Ivan (CI) is simplest possible continuous integration tool.

== Usage

Create a directory where your projects will live $ mkdir /var/continuous-integration

Place some project(s) in that directory $ cd /var/continuous-integration $ git clone git://github.com/edward/active_merchant.git

Set up continuous integration for each project $ crazy_ivan setup # creates example ci scripts in # each project (see How this works)

$ crazy_ivan setup  # creates the ci directory, and
                    # creates a configuration file,
                    # sets a cron job to run crazy_ivan

Manually run it once to check everything is ok $ cd /var/continuous-integration $ crazy_ivan /var/www/ci # the test reports path should be # accessible via your web server

$ open /var/www/ci/index.html  # or check it through your browser

Set a cron job to run it every 15 minutes $ echo "0,15,30,45 * * * * cd /var/continuous-integration; crazy_ivan /var/www/ci" > ci.cron $ crontab ci.cron

Note that you don’t want this running too frequently; having overlapping runs is possible and would be bad.

(Functionality to have this run as a web-hook is planned.)

== How this works

• crazy_ivan is executed periodically by cron

• crazy_ivan looks in directories one level deeper than where it’s been called

  => asked to run in /projects /shopify looks in each /liquid of these dirs /active_merchant ========> /active_shipping

  => within each directory, it expects four executable scripts to execute at the /:

    /shopify
      /.ci/update
           version
           test
           conclusion
  

• crazy_ivan first executes update and captures the output:

  #!/usr/bin/env bash

  git pull # Whatever your application # needs to do to update your # source from a repository

• crazy_ivan then exectutes version and captures the output:

  #!/usr/bin/env bash

  #!/usr/bin/env ruby -wKU # Get a version hash/fingerprint/id puts git show[/^commit (.+)$/, 1] # from your version control system # # (Note that this will be truncated # to fit within a filename length.)

• crazy_ivan then executes test and captures the output:

  #!/usr/bin/env bash

  rake db:migrate # This task prepares the application rake test # for running tests, then runs them

• At each of these three steps, the output is repackaged into a .json file to be consumed in the directory holding the static html.

• crazy_ivan then executes conclusion, passing it the same results packaged in the .json file used in the static html view.

== Copyright and Credits

Copyright (c) 2009 Edward Ocampo-Gooding. See LICENSE for details.

Heavily inspired/first code sketch written by Tobi Lütke.