Class: FeedProcessor::Fetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/feed_processor/fetcher.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Fetcher

Returns a new instance of Fetcher.



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# File 'lib/feed_processor/fetcher.rb', line 11

def initialize(options={})
  @options = options
  @request_generator = options[:request_generator] || FeedProcessor::FileBasedRequestGenerator.new
  setup_mongo(options[:mongo])
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/feed_processor/fetcher.rb', line 9

def options
  @options
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/feed_processor/fetcher.rb', line 21

def execute
  number_of_threads = options[:threads] || 16
  main_queue = Beanstalk::Pool.new(['localhost:11300'])
  
  number_of_requests = requests.length
  main_queue.put("START #{number_of_requests}")
  slice_size = number_of_requests / number_of_threads
  slice_size = 1 if slice_size < 1
  puts "Each slice has #{slice_size} urls (#{number_of_requests} requests / #{number_of_threads} threads)"

  requests.threadify(:each_slice, slice_size) do |slice|
    queue = Beanstalk::Pool.new(['localhost:11300'])
    HttpReactor::Client.new(slice) do |response, context|
      begin
        request = context.get_attribute('http_target_request')
        puts "#{response.code}:#{request.uri}"

        Response.create({
          :url => request.uri, 
          :data => FeedProcessor::Util.decode_content(response), 
          :status => response.code
        })
  
        if response.code == 200
          queue.put(request.uri.to_s)
        end
      rescue Exception => e
        puts "Exception in handler: #{e.message}"
      end
    end
  end

  main_queue.put("END #{number_of_requests}")
  puts "Fetched #{number_of_requests} feeds"
  
end

#requests ⇒ Object 



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# File 'lib/feed_processor/fetcher.rb', line 17

def requests
  @request_generator.requests
end