git post-receive for conditional Jenkins run

post-receive

#!/usr/bin/env ruby

require '~/bin/webapp-post-receive'

old_head, new_head, ref = STDIN.gets.split

redmine_project = 'redmine-project-name'
ci_project = 'jenkins-project-name'

WebappPostReceive.process(:redmine_project => redmine_project, 
:ci_project => ci_project, 
:build_with_parameters => false,
:ci_branch => 'development', 
:old_head => old_head, 
:new_head => new_head, 
:ref => ref)

webapp-post-receive.rb

class WebappPostReceive

  def self.process(opts)
  
	puts "Input Opts are : #{opts.inspect} "

    old_head = opts.delete :old_head
    new_head = opts.delete :new_head
    ref = opts.delete :ref

    ref =~ /refs\/heads\/(.*)/
    branch = $1
    
    puts "old_head: #{old_head}"
    puts "new_head: #{new_head}"
    puts "ref: #{ref}"
    puts "branch: #{branch}"
    
    redmine_repository_api_key = "tV9z6GqZGykY1pRVDiFW"
     
    glog = `git log -1 --stat #{new_head}`
#    if (glog =~ /1 files changed/ && glog =~ /VERSION/ && glog =~ /Version bump/)
#    	|| (glog =~ /1 files changed/ && glog =~ /CHANGELOG/ && glog =~ /Collect Changelog/)
     if (glog =~ /Jenkins|Hudson/)
       puts "Skipping CI-invoked push of VERSION and Tagging"
     exit
    end
    
    redmine_project = opts[:redmine_project]
    ci_project = opts[:ci_project]
    ci_branch = opts[:ci_branch] || 'master'
    build_with_parameters = true # default
    build_with_parameters = opts[:build_with_parameters] if opts.key?(:build_with_parameters)

    ci_url = opts[:ci_url] || "default_host:8080"

    redmine_url=%Q("http://redmine_server.local/sys/fetch_changesets?id=#{redmine_project}&key=#{redmine_repository_api_key}")

if  build_with_parameters
    hudson_url=%Q("http://#{ci_url}/job/#{ci_project}/buildWithParameters?delay=0sec&GIT_BRANCH=#{branch}")
else
    hudson_url=%Q("http://#{ci_url}/job/#{ci_project}/build")
end

    puts "Backgrounding...
    Redmine Repository processing
    ... #{redmine_url}
    "

    if branch != ci_branch
		  puts "Branch is #{branch}
      ... Hudson will only build for commits to #{ci_branch} !!!
      ... Have a nice day :)
      "
    else
      puts "CI Build
      ... #{hudson_url}
      ... watch the console at: http://#{ci_url}/job/#{ci_project}/lastBuild/console

      WAKEUP!!  Git Pull after Successful Build for updated VERSION file and Git tags

      (so sorry to yell... just needed your attention there ;)
      "
    end
    
    fork do
      `wget #{redmine_url} -o #{redmine_project}-redmine-refresh.html`
    end
    if branch == ci_branch
      fork do
        `wget #{hudson_url} -o #{ci_project}-hudson-build.html`
      end
    end
  
  end


end