Wanna build a stack? Give us the blueprint!
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README.rdoc

blueprint

Blueprint is a DSL that allows creating MyStacks and CommunityStacks to be deployed on Webbynode.

The current incarnation is to be considered early alpha, and only builds the Hash required to describe the components of the Stack.

As code advances, this will become a full API for interacting with Webbynode and maintaining stacks.

Before upcoming sections, kudos to Sean O'Halpin, the guy behind the ruby lib/gem Doodle for allowing me to use his Doodle::Util module on this. Thanks Sean!

Example

Code of a blueprint will be something like this:

rails_rs = blueprint(:type => “readystack”, :name => “rs.rails”) do |f| # this blueprint delivers “rs.rails” f.provides “rs.rails”

# dependencies and order of execution – top => bottom # apache2/ngnix, mysql/postgre, passenger/mongrel f.requires :group => “webservers”, :with => [“apache2”, “nginx”] f.requires :group => “database”, :with => [“mysql-server”, “postgresqlserver”] f.requires “rails” f.requires :group => “proxy”, :with => [“passenger”, “mongrel_cluster”]

# attributes f.attributes :required => 'y' f.outputs :installed_gems => “^Installed following gems: (.*)”, :success_indicator => “^SUCCESS: (.*)”

# always installs rails f.dependency “rails”, :render_as => “hidden”

# gives two webserver/proxy combo options: # apache2 + passenger or nginx + mongrel f.parameter “webserver-proxy”, :label => “WebServer and Proxy” do |p| p.attributes :required => “y”

p.aggregate “Apache2 and Passenger”, :render_as => “radio” do |agr| agr.dependency “apache2” agr.dependency “passenger” end

p.aggregate “Nginx and Mongrel Cluster”, :render_as => “radio” do |agr| agr.dependency “nginx” agr.dependency “mongrel_cluster” end

# doesn't install webserver/proxy p.aggregate “No webserver & proxy”, :render_as => “radio” do |agr| agr.parameter “-” end end

# database options: mysql or postgresql f.parameter “database-server”, :label => “Database Server” do |p| p.attributes :required => “y”

p.dependency “mysql-server”, :label => “MySQL”, :render_as => “radio” p.dependency “postgresqlserver”, :label => “PostgreSQL”, :render_as => “radio” p.no_op “No database server”, :render_as => “radio” end

# list of gems f.aggregate “Additional Gems” do |agr| %w{will_paginate thoughtbot-paperclip rspec authlogic hpricot capistrano}.each do |gem|

agr.parameter “gem_#{gem}”, :label => gem, :render_as => “checkbox”

end end end

Copyright

Copyright © 2009 Webbynode. See LICENSE for details.