Module: TreasureData::Logger::Agent

Defined in:
lib/td/logger/agent/rails.rb,
lib/td/logger/agent/access_log.rb,
lib/td/logger/agent/middleware.rb,
lib/td/logger/agent/rails/model.rb,
lib/td/logger/agent/rails/controller.rb

Defined Under Namespace

Modules: Rails Classes: Middleware

Constant Summary collapse

ACCESS_LOG_PARAM_ENV = 
if defined? ::Rails
  if ::Rails.respond_to?(:version) && ::Rails.version =~ /^3/
    # Rails 3
    'action_dispatch.request.path_parameters'
  else
    # Rails 2
    'action_controller.request.path_parameters'
  end
else
  # Rack default
  'rack.routing_args'
end
ACCESS_LOG_PRESET_PARAM_KEYS = 
{
  :controller => :controller,
  :action => :action,
}

Class Method Summary collapse

Class Method Details

.enable_access_log(config) ⇒ Object 



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# File 'lib/td/logger/agent/access_log.rb', line 25

def self.enable_access_log(config)
  tag = config.access_log_table

  if config.rails_config.respond_to?(:filter_parameters)
    filter_parameters = config.rails_config.filter_parameters
  else
    filter_parameters = []
  end

  Middleware.before do |env|
    record = {}
    Thread.current['td.access_log'] = record
    env['td.access_log'] = record
    env['td.access_time'] = Time.now
  end

  Middleware.after do |env,result|
    req = env['action_dispatch.request']
    if !req || !req.is_a?(Rack::Request)
      req = Rack::Request.new(env)
    end

    # ignore OPTIONS request
    if req.request_method != "OPTIONS"
      record = env['td.access_log'] || {}

      # 'elapsed' column
      if access_time = env['td.access_time']
        unless record.has_key?(:elapsed)
          record[:elapsed] = Time.now - access_time
        end

        # always overwrite 'time' column by access time
        record[:time] = access_time
      end

      # merge params
      req.params.each_pair {|key,val|
        key = key.to_sym
        unless record.has_key?(key) || filter_parameters.include?(key)
          record[key] = val
        end
      }

      # 'method' column
      if !record.has_key?(:method)
        record[:method] = req.request_method
      end

      # 'ip' column
      unless record.has_key?(:ip)
        record[:ip] = (env['action_dispatch.remote_ip'] || req.ip).to_s
      end

      # 'path' column
      #   requested path before '?'
      unless record.has_key?(:path)
        if path = env['REQUEST_URI']
          if m = /(?:\w{1,10}\:\/\/[^\/]+)?([^\?]*)/.match(path)
            record[:path] = m[1]
          end
        end
      end

      # 'host' column
      #   Rack#host_with_port consideres HTTP_X_FORWARDED_HOST
      unless record.has_key?(:host)
        record[:host] = req.host_with_port
      end

      # 'referer' column
      unless record.has_key?(:referer)
        if referer = env['HTTP_REFERER']
          record[:referer] = referer.to_s
        end
      end

      # 'agent' column
      unless record.has_key?(:agent)
        if agent = env['HTTP_USER_AGENT']
          record[:agent] = agent
        end
      end

      # 'status' column
      unless record.has_key?(:status)
        record[:status] = result[0].to_i
      end

      # 'controller' and 'action' columns
      if m = env[ACCESS_LOG_PARAM_ENV]
        ACCESS_LOG_PRESET_PARAM_KEYS.each_pair {|key,val|
          unless record.has_key?(key)
            record[key] = m[val] if m[val]
          end
        }
      end

      TreasureData.log(tag, record)
    end
  end
end