simple-ish rss atom feed watcher to alert when a code change has taken place

codewatcher.rb

# script to watch production code commit log and send a diff of if any changes for PCI regulation needs

require 'rss'
require 'openssl'

DEBUG = false

# set the local store for marshalled data

$prod_code_last_reported_date = '/home/someuser/bin/watch_rss/data/last_reported.yml'
$feed = 'SCRUBBED'
$full_diff_email = 'longchanges@someplace.com'
$small_diff_email = 'smallerlist@someplace.com'
$fromuser = 'admins@someplace.com'

def get_latest_time(feed)
  open(feed,:ssl_verify_mode => OpenSSL::SSL::VERIFY_NONE) do |atom|
    content = RSS::Parser.parse(atom, false)
    return content.items.first.updated.content
  end
end

if not File.exists?($prod_code_last_reported_date)
  last_run = ( Time.mktime('1970') )
  File.open($prod_code_last_reported_date,'w') do |file|
    file.write Marshal.dump(last_run)
  end
else
  last_run = Marshal.load( File.read($prod_code_last_reported_date) )
end

latest_update_time = get_latest_time($feed)

# if items from rss are older than last_run

if latest_update_time > last_run
  puts "new commits or mergers" if DEBUG
  begin
    results = %x[/home/someplace/bin/getlong.sh | /usr/local/bin/mailer.rb -s "CodeWatcher: Production Java" -f #{$fromuser} #{$full_diff_email}]
    results = %x[/home/someplace/bin/getshort.sh | /usr/local/bin/mailer.rb -s "CodeWatcher: Production Java" -f #{$fromuser} #{$small_diff_email}]
    # pushing latest date to the yaml
    File.open($prod_code_last_reported_date,'w') do |file|
      file.write Marshal.dump(latest_update_time)
    end
  rescue
    %x[echo "issue with the codewatcher job on gitlab" | /usr/loca/bin/mailer.rb -s "Alert Problem with Codewatcher" -f #{fromuser} #{$fromuser}]
    exit
  end
else
  puts "no new commits or mergers" if DEBUG
  exit
end