Class: Baiduserp::Client

Inherits:
Object
  • Object
show all
Includes:
HTTParty
Defined in:
lib/baiduserp/client.rb

Constant Summary collapse

AllUserAgents = 
YAML.load(open(File.expand_path('../user_agents.yml',__FILE__)))

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.get_serp(url, retries = 3) ⇒ Object 



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# File 'lib/baiduserp/client.rb', line 16

def self.get_serp(url,retries = 3)
  self.new.get_serp(url,retries)
end

.rand_ua ⇒ Object 



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# File 'lib/baiduserp/client.rb', line 7

def self.rand_ua
  AllUserAgents[rand(AllUserAgents.size)]
end

Instance Method Details

#get_serp(url, retries = 3) ⇒ Object 



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# File 'lib/baiduserp/client.rb', line 20

def get_serp(url, retries = 3)
  if retries > 0
    begin
      response = self.class.get(url)
    rescue StandardError => e
      puts e.class
      puts e.message
      sleep(10)
      retry
    end

    if response.code != 200
      puts response
      puts "Retry on URL: #{url}"
      sleep(rand(60)+1200)
      response = self.class.get_serp(url,retries - 1)
    end

    if response.nil?
      puts "Still error after 3 tries, sleep 3600s now."
      sleep(3600)
      response = self.class.get_serp(url)
    end

    if response.headers['Content-Length'].nil?
      response = self.class.get_serp(url,retries)
    end

    if response.headers['Content-Length'].to_i != response.body.bytesize
      issue_file = "/tmp/baiduserp_crawler_issue_#{Time.now.strftime("%Y%m%d%H%M%S")}.html"
      open(issue_file,'w').puts(response.body)
      puts "Notice:"
      puts "Baiduserp get an error when crawl SERP: response size (#{response.headers['Content-Length']}) not match body size."
      puts "Please see file #{issue_file} for body content."
      puts "Sleep 10s and retry"
      sleep(10)
      response = self.class.get_serp(url)
    end

    return response
  else
    return nil
  end
end