class Kimurai::BrowserBuilder::MechanizeBuilder
Attributes
logger[R]
spider[R]
Public Class Methods
new(config, spider:)
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# File lib/kimurai/browser_builder/mechanize_builder.rb, line 11 def initialize(config, spider:) @config = config @spider = spider @logger = spider.logger end
Public Instance Methods
build()
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# File lib/kimurai/browser_builder/mechanize_builder.rb, line 17 def build # Register driver Capybara.register_driver :mechanize do |app| driver = Capybara::Mechanize::Driver.new("app") # keep the history as small as possible (by default it's unlimited) driver.configure { |a| a.history.max_size = 2 } driver end # Create browser instance (Capybara session) @browser = Capybara::Session.new(:mechanize) @browser.spider = spider logger.debug "BrowserBuilder (mechanize): created browser instance" if @config[:extensions].present? logger.error "BrowserBuilder (mechanize): `extensions` option not supported, skipped" end # Proxy if proxy = @config[:proxy].presence proxy_string = (proxy.class == Proc ? proxy.call : proxy).strip ip, port, type = proxy_string.split(":") if type == "http" @browser.driver.set_proxy(*proxy_string.split(":")) logger.debug "BrowserBuilder (mechanize): enabled http proxy, ip: #{ip}, port: #{port}" else logger.error "BrowserBuilder (mechanize): can't set #{type} proxy (not supported), skipped" end end # SSL if ssl_cert_path = @config[:ssl_cert_path].presence @browser.driver.browser.agent.http.ca_file = ssl_cert_path logger.debug "BrowserBuilder (mechanize): enabled custom ssl_cert" end if @config[:ignore_ssl_errors].present? @browser.driver.browser.agent.verify_mode = OpenSSL::SSL::VERIFY_NONE logger.debug "BrowserBuilder (mechanize): enabled ignore_ssl_errors" end # Headers if headers = @config[:headers].presence @browser.driver.headers = headers logger.debug "BrowserBuilder (mechanize): enabled custom headers" end if user_agent = @config[:user_agent].presence user_agent_string = (user_agent.class == Proc ? user_agent.call : user_agent).strip @browser.driver.add_header("User-Agent", user_agent_string) logger.debug "BrowserBuilder (mechanize): enabled custom user_agent" end # Cookies if cookies = @config[:cookies].presence cookies.each do |cookie| @browser.driver.set_cookie(cookie[:name], cookie[:value], cookie) end logger.debug "BrowserBuilder (mechanize): enabled custom cookies" end # Browser instance options # skip_request_errors if skip_errors = @config[:skip_request_errors].presence @browser.config.skip_request_errors = skip_errors logger.debug "BrowserBuilder (mechanize): enabled skip_request_errors" end # retry_request_errors if retry_errors = @config[:retry_request_errors].presence @browser.config.retry_request_errors = retry_errors logger.debug "BrowserBuilder (mechanize): enabled retry_request_errors" end # restart_if if @config[:restart_if].present? logger.warn "BrowserBuilder (mechanize): restart_if options not supported by Mechanize, skipped" end # before_request clear_cookies if @config.dig(:before_request, :clear_cookies) @browser.config.before_request[:clear_cookies] = true logger.debug "BrowserBuilder (mechanize): enabled before_request.clear_cookies" end # before_request clear_and_set_cookies if @config.dig(:before_request, :clear_and_set_cookies) if cookies = @config[:cookies].presence @browser.config.cookies = cookies @browser.config.before_request[:clear_and_set_cookies] = true logger.debug "BrowserBuilder (mechanize): enabled before_request.clear_and_set_cookies" else logger.error "BrowserBuilder (mechanize): cookies should be present to enable before_request.clear_and_set_cookies, skipped" end end # before_request change_user_agent if @config.dig(:before_request, :change_user_agent) if @config[:user_agent].present? && @config[:user_agent].class == Proc @browser.config.user_agent = @config[:user_agent] @browser.config.before_request[:change_user_agent] = true logger.debug "BrowserBuilder (mechanize): enabled before_request.change_user_agent" else logger.error "BrowserBuilder (mechanize): user_agent should be present and has lambda format to enable before_request.change_user_agent, skipped" end end # before_request change_proxy if @config.dig(:before_request, :change_proxy) if @config[:proxy].present? && @config[:proxy].class == Proc @browser.config.proxy = @config[:proxy] @browser.config.before_request[:change_proxy] = true logger.debug "BrowserBuilder (mechanize): enabled before_request.change_proxy" else logger.error "BrowserBuilder (mechanize): proxy should be present and has lambda format to enable before_request.change_proxy, skipped" end end # before_request delay if delay = @config.dig(:before_request, :delay).presence @browser.config.before_request[:delay] = delay logger.debug "BrowserBuilder (mechanize): enabled before_request.delay" end # encoding if encoding = @config[:encoding] @browser.config.encoding = encoding logger.debug "BrowserBuilder (mechanize): enabled encoding: #{encoding}" end # return Capybara session instance @browser end