fluent/fluentd

#
# Fluentd
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.
#

require 'fluent/time' # TimeFormatter

module Fluent
  module Compat
    module HandleTagAndTimeMixin
      def self.included(klass)
        klass.instance_eval {
          config_param :include_time_key, :bool, default: false
          config_param :time_key, :string, default: 'time'
          config_param :time_format, :string, default: nil
          config_param :time_as_epoch, :bool, default: false
          config_param :include_tag_key, :bool, default: false
          config_param :tag_key, :string, default: 'tag'
          config_param :localtime, :bool, default: true
          config_param :timezone, :string, default: nil
        }
      end

      def configure(conf)
        super

        if conf['utc']
          @localtime = false
        end
        @timef = Fluent::TimeFormatter.new(@time_format, @localtime, @timezone)
        if @time_as_epoch && !@include_time_key
          log.warn "time_as_epoch will be ignored because include_time_key is false"
        end
      end

      def filter_record(tag, time, record)
        if @include_tag_key
          record[@tag_key] = tag
        end
        if @include_time_key
          if @time_as_epoch
            record[@time_key] = time.to_i
          else
            record[@time_key] = @timef.format(time)
          end
        end
      end
    end
  end
end