Class: Benchmark::HTTP::Spider

Inherits:
Object
  • Object
show all
Includes:
Async::Await
Defined in:
lib/benchmark/http/spider.rb

Instance Method Summary collapse

Constructor Details

#initialize(depth: nil, ignore: nil) ⇒ Spider

Returns a new instance of Spider.



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# File 'lib/benchmark/http/spider.rb', line 37

def initialize(depth: nil, ignore: nil)
  @depth = depth
  @ignore = ignore
end

Instance Method Details



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# File 'lib/benchmark/http/spider.rb', line 42

def extract_links(url, response)
  base = url
  
  body = response.read
  
  begin
    filter = LinksFilter.parse(body)
  rescue
    Async.logger.error(self) {$!}
    return []
  end
  
  if filter.base
    base = base + filter.base
  end
  
  filter.links.collect do |href|
    next if href.nil? or href.empty?
    
    begin
      full_url = base + href
      
      if full_url.host == url.host && full_url.kind_of?(URI::HTTP)
        yield full_url
      end
    rescue ArgumentError, URI::InvalidURIError
      Async.logger.warn(self) {"Could not fetch #{href}, relative to #{base}!"}
      next # Don't accumulate an item into the resulting array.
    end
  end.compact
end