Class: Arachnid2::Typhoeus

Inherits:
Object
  • Object
show all
Includes:
Exoskeleton, CachedArachnidResponses
Defined in:
lib/arachnid2/typhoeus.rb

Constant Summary

Constants included from CachedArachnidResponses

CachedArachnidResponses::CACHE_SERVICE_URL

Instance Method Summary collapse

Methods included from Exoskeleton

#bound_time, #bound_urls, #browser_type, #crawl_options, #extension_ignored?, #extract_hrefs, #in_docker?, #internal_link?, #make_absolute, #maximum_load_rate, #memory_danger?, #non_html_extensions, #preflight, #process, #proxy, #skip_link?, #timeout, #vacuum

Methods included from CachedArachnidResponses

#check_config, #load_data, #put_cached_data

Constructor Details

#initialize(url) ⇒ Typhoeus

Returns a new instance of Typhoeus.



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# File 'lib/arachnid2/typhoeus.rb', line 6

def initialize(url)
  @url = url
  @domain = Adomain[@url]
  @cached_data = []
end

Instance Method Details

#crawl(opts = {}) ⇒ Object 



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# File 'lib/arachnid2/typhoeus.rb', line 12

def crawl(opts = {})
  preflight(opts)
  typhoeus_preflight

  until @global_queue.empty?
    max_concurrency.times do
      q = @global_queue.shift

      break if @global_visited.size >= crawl_options[:max_urls] || \
               Time.now > crawl_options[:time_limit] || \
               memory_danger?

      @global_visited.insert(q)

      request = ::Typhoeus::Request.new(q, request_options)

      data = load_data(@url, opts)
      data.each { |response| yield response } and return unless data.nil?

      request.on_complete do |response|
        @cached_data.push(response)
        links = process(response.effective_url, response.body)
        next unless links

        yield response

        vacuum(links, response.effective_url)
      end

      @hydra.queue(request)
    end # max_concurrency.times do

    @hydra.run

  end # until @global_queue.empty?
  put_cached_data(@url, opts, @cached_data) unless @cached_data.empty?
ensure
  @cookie_file.close! if @cookie_file
end