Class: Fluent::ReemitOutput::V12EventRouter

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/plugin/out_reemit/v12_event_router.rb

Direct Known Subclasses

V14EventRouter

Instance Method Summary collapse

Constructor Details

#initialize(reemit) ⇒ V12EventRouter

Returns a new instance of V12EventRouter.



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# File 'lib/fluent/plugin/out_reemit/v12_event_router.rb', line 11

def initialize(reemit)
  @reemit = reemit
  @event_router = Engine.root_agent.event_router
  @chain = @event_router.instance_variable_get(:@chain) # only v0.12
  @emit_error_handler = @event_router.emit_error_handler
  @match_rules = @event_router.instance_variable_get(:@match_rules)
  @default_collector = @event_router.default_collector
  # @match_cache = @event_router.match_cache
  @match_cache = ::Fluent::EventRouter::MatchCache.new # need to use a different cache
end

Instance Method Details

#emit_stream(tag, es) ⇒ Object

copy from fluentd



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# File 'lib/fluent/plugin/out_reemit/v12_event_router.rb', line 23

def emit_stream(tag, es)
  match(tag).emit(tag, es, @chain)
rescue => e
  @emit_error_handler.handle_emits_error(tag, es, e)
end

#filter_class ⇒ Object 



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# File 'lib/fluent/plugin/out_reemit/v12_event_router.rb', line 7

def filter_class
  ::Fluent::Filter
end

#find(tag) ⇒ Object 



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# File 'lib/fluent/plugin/out_reemit/v12_event_router.rb', line 37

def find(tag)
  # We want to reemit messages to the **next** `<match>`
  pipeline = nil
  found_reemit = false
  @match_rules.each_with_index { |rule, i|
    # if rule.match?(tag) # this is the original
    if rule.match?(tag)
      if found_reemit && !@reemit.included?(rule.collector)
        if rule.collector.is_a?(filter_class)
          pipeline ||= ::Fluent::EventRouter::Pipeline.new
          pipeline.add_filter(rule.collector)
        else
          if pipeline
            pipeline.set_output(rule.collector)
          else
            # Use Output directly when filter is not matched
            pipeline = rule.collector
          end
          return pipeline
        end
      elsif !found_reemit && @reemit.included?(rule.collector)
        found_reemit = true
      end
    end
  }

  if pipeline
    # filter is matched but no match
    pipeline.set_output(@default_collector)
    pipeline
  else
    nil
  end
end

#match(tag) ⇒ Object

copy from fluentd



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# File 'lib/fluent/plugin/out_reemit/v12_event_router.rb', line 30

def match(tag)
  collector = @match_cache.get(tag) {
    c = find(tag) || @default_collector
  }
  collector
end