Class: Fluent::Plugin::LabelRouterOutput

Inherits:
BareOutput
  • Object
show all
Defined in:
lib/fluent/plugin/out_label_router.rb

Defined Under Namespace

Classes: Route

Instance Method Summary collapse

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_label_router.rb', line 112

def configure(conf)
  super
  @route_map = Hash.new { |h, k| h[k] = Array.new }
  @routers = []
  @routes.each do |rule|
    route_router = event_emitter_router(rule['@label'])
    @routers << Route.new(rule.labels, rule.namespace.to_s, rule.tag.to_s, route_router)
  end

  @access_to_labels = record_accessor_create("$.kubernetes.labels")
  @access_to_namespace = record_accessor_create("$.kubernetes.namespace_name")

  @batch = @emit_mode == :batch
end

#process(tag, es) ⇒ Object 



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# File 'lib/fluent/plugin/out_label_router.rb', line 78

def process(tag, es)
  if @sticky_tags
    if @route_map.has_key?(tag)
      # We already matched with this tag send events to the routers
      @route_map[tag].each do |r|
        r.emit_es(tag, es.dup)
      end
      return
    end
  end
  event_stream = Hash.new {|h, k| h[k] = Fluent::MultiEventStream.new }
  es.each do |time, record|
    input_labels = @access_to_labels.call(record).to_h
    input_namespace = @access_to_namespace.call(record).to_s
    @routers.each do |r|
      if r.match?(input_labels, input_namespace)
        if @sticky_tags
          @route_map[tag].push(r)
        end
        if @batch
          event_stream[r].add(time, record)
        else
          r.emit(tag, time, record.dup)
        end
      end
    end
    if @batch
      event_stream.each do |r, es|
        r.emit_es(tag, es.dup)
      end
    end
  end
end