Opscode Chef API interaction with Ruby to bootstrap new nodes generated by GCE within a Jenkins run, set attributes and assign roles to newly provisioned instances for configuration and application deployment.

gistfile1.rb

#!/usr/local/rvm/rubies/ruby-1.9.3-p362/bin/ruby
#

require 'ridley'
require 'pathname'
require 'openssl'
require 'digest'
require 'json'

class BootstrapError < StandardError; end

URL = %Q(https://api.opscode.com/organizations/stathy)
ORG = Pathname.new(URL).basename
conn = Ridley.connection({
    server_url: URL,
    organization: ORG,
    client_name: 'jenkins_stathy',
    client_key: %Q(#{ENV['HOME']}/.chef/jenkins@opscode.com.pem),
    validator_client: "stathy-validator",
    validator_path: "#{ENV['HOME']}/.chef/stathy-validator.pem",
    ssh: {
        user: 'jenkins',
        keys: "#{ENV['HOME']}/.ssh/google_compute_engine",
        user_known_hosts_file: "/dev/null",
        verify: false
    }
})

Dir.chdir(ENV['WORKSPACE']) do
    ce = "#{ENV['JOB_NAME']}-#{ENV['BUILD_NUMBER']}"
    artifact_path = %Q(./dbapp/target/dbapp.war)
    checksum = Digest::SHA256.file(artifact_path).hexdigest
    artifact_url = %Q(http://commondatastorage.googleapis.com/stathy/#{ENV['JOB_NAME']}/#{ENV['BUILD_NUMBER']}/dbapp.war)

    conn.sync do

        if environment.find(ce).nil?
            e_obj = environment.new
            e_obj.name = ce
            e_obj.set_override_attribute("chef_client.server_url", "https://api.opscode.com/organizations/stathy")
            e_obj.set_override_attribute("chef_client.validation_client_name", "stathy-validator")

            e_obj.set_override_attribute("apps.dbapp.owner", "nobody")
            e_obj.set_override_attribute("apps.dbapp.group", "nobody")

             e_obj.set_override_attribute("apps.dbapp.checksum", checksum)
            e_obj.set_override_attribute("apps.dbapp.source", artifact_url)
            environment.create(e_obj)
        end

        %w( db app1 lb ).each do |n|
            cmd = %Q( I=( `gcutil getinstance dbapp-#{n} | grep 'external-ip' | sed 's/|//'g` ); echo ${I[1]} )
            ip = `#{cmd}`.chomp
            raise if ip.nil?

            6.downto(1) do |i|
                status = nil
                begin
                    status = node.bootstrap(ip, {environment: ce, run_list: %W( role[base_centos] role[dbapp_#{n.gsub(/[0-9]+/,'')}] ), sudo: true, no_host_key_verify: true})

                    if status.has_errors?
                        raise BootstrapError.new("Error bootstrapping chef on #{ip}")
                    else
                        break
                    end

                rescue BootstrapError => e
                    if i == 1
                        exit status.responses.last.exit_code
                    else
                        sleep(10)
                    end

                end

            end

        end

    end
end




__END__