Class: Cerberus::Publisher::RSS

Inherits:
Base
  • Object
show all
Defined in:
lib/cerberus/publisher/rss.rb

Class Method Summary collapse

Methods inherited from Base

formatted_message

Class Method Details

.publish(state, manager, options) ⇒ Object 



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# File 'lib/cerberus/publisher/rss.rb', line 7

def self.publish(state, manager, options)
  config = options[:publisher, :rss]
  subject,body = Cerberus::Publisher::Base.formatted_message(state, manager, options)

  pub_date = Time.now

  begin
    feed = RSS::Parser.parse(File.read(config[:file]), false)
    raise RSS::Error unless feed
    keep = config[:keep] || 1
    feed.items.slice!(keep -1 ..-1)  # one less than keep value, to make room for the new build
  rescue RSS::Error, Errno::ENOENT
    # if there's no existing file or we can't parse it, start a new one from scratch
    feed = RSS::Maker.make("2.0") do |new_rss|
      new_rss.channel.title = "#{options[:application_name].to_xs} build status"
      new_rss.channel.description = "Cerberus build feed for #{options[:application_name].to_xs}"
      new_rss.channel.generator = "http://rubyforge.org/projects/cerberus"
      new_rss.channel.link = config[:channel_link] || "file://#{config[:file]}"
    end
  end

  # update channel link if we have it explicitly set, otherwise retain existing value
  feed.channel.link = config[:channel_link] unless config[:channel_link].nil?
  feed.channel.pubDate = pub_date

  new_item = RSS::Rss::Channel::Item.new()
  new_item.title = subject
  new_item.pubDate = pub_date
  new_item.description = "<pre>#{body}</pre>"

  feed.items.unshift new_item

  IO.write(config[:file], feed)
end