Contents

require 'user_agent_parser'
require 'lru_redux'

module Fluent
  class UaParserFilter < Filter
    Plugin.register_filter('ua_parser', self)

    def initialize
      @ua_cache = LruRedux::Cache.new(8000)
      super
    end

    config_param :key_name, :string, :default => 'user_agent'
    config_param :delete_key, :bool, :default => false
    config_param :out_key, :string, :default => 'ua'
    # config_param :flatten, :bool :default => false
    config_param :patterns_path, :string, :default => nil

    def configure(conf)
      super
      begin
        @parser = UserAgentParser::Parser.new(patterns_path: @patterns_path)
      rescue => e
        @parser = UserAgentParser::Parser.new
        log.warn "Failed to configure parser. Use default pattern.", :error_class => e.class, :error => e.message
        log.warn_backtrace
      end
    end

    def filter(tag, time, record)
      ua_string = record[@key_name]
      record.delete(@key_name) if @delete_key
      unless ua_string.nil?
        user_agent_detail = @ua_cache.getset(ua_string) { get_ua_detail(ua_string) }
        record[@out_key] = user_agent_detail
      end
      record
    end

    private

    def get_ua_detail(ua_string)
      ua = @parser.parse(ua_string)
      data = {"browser"=>{}, "os"=>{}, "device"=>""}
      return data if ua.nil?
      data['browser']['family'] = ua.family
      data['browser']['version'] = ua.version.to_s
      data['browser']['major_version'] = ua.version.major.to_i unless ua.version.nil?
      data['os']['family'] = ua.os.family
      data['os']['version'] = ua.os.version.to_s
      data['os']['major_version'] = ua.os.version.major.to_i unless ua.os.version.nil?
      data['device'] = ua.device.to_s
      data
    end
  end if defined?(Filter) # Support only >= v0.12
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
fluent-plugin-ua-parser-0.2.2	lib/fluent/plugin/filter_ua_parser.rb
fluent-plugin-ua-parser-0.2.1	lib/fluent/plugin/filter_ua_parser.rb
fluent-plugin-ua-parser-0.2.0	lib/fluent/plugin/filter_ua_parser.rb