Class: Ektoplayer::DatabaseUpdater

Inherits:
Object
  • Object
show all
Defined in:
lib/ektoplayer/updater.rb

Constant Summary collapse

ALBUM_STR_TAGS = 
Set.new(%w(url title date cover_url
description download_count rating votes).map(&:to_sym)).freeze
TRACK_STR_TAGS = 
Set.new(%w(url number title remix artist bpm).map(&:to_sym)).freeze

Instance Method Summary collapse

Constructor Details

#initialize(db) ⇒ DatabaseUpdater

Returns a new instance of DatabaseUpdater.



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# File 'lib/ektoplayer/updater.rb', line 17

def initialize(db)
   @db = db
end

Instance Method Details

#update(start_url: FREE_MUSIC_URL, pages: 0, parallel: 10) ⇒ Object 



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# File 'lib/ektoplayer/updater.rb', line 21

def update(start_url: FREE_MUSIC_URL, pages: 0, parallel: 10)
   queue = parallel > 0 ? SizedQueue.new(parallel) : Queue.new 
   results = Queue.new
   bp = BrowsePage.new(start_url)
   results << bp

   insert_thread = Thread.new do
      loop do
         result = results.pop
         @db.transaction
         insert_browserpage(result)
         @db.commit
      end
   end

   if pages > 0
      bp.page_urls[(bp.current_page_index + 1)..(bp.current_page_index + pages + 1)]
   else
      bp.page_urls[(bp.current_page_index + 1)..-1]
   end.
   each do |url|
      queue << Thread.new do

         3.times do |try|
            begin
               bp = BrowsePage.new(url)
               Application.log(self, url, bp.albums.size, "albums found")
               results << bp
               break
            rescue
               Application.log(self, url, $!, "(retry ##{try})")
            end
         end

         queue.pop # unregister our thread
      end.priority
   end

   sleep 1 until queue.empty?
   insert_thread.kill
rescue
   Application.log(self, $!)
end