Class: Fluent::EvalFilter

Inherits:
Filter
  • Object
show all
Defined in:
lib/fluent/plugin/filter_eval.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ EvalFilter 



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

def initialize
  super
end

Instance Method Details

#configure(conf) ⇒ Object 



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

def configure(conf)
  super

  if @requires
    @requires.split(',').each do |lib|
      begin
        require lib
      rescue Exception => e
        raise Fluent::ConfigError, "\n#{e.message}\n#{e.backtrace.join("\n")}"
      end
    end
  end

  conf.keys.select { |key| key =~ /^config\d+$/ }.sort_by { |key| key.sub('config', '').to_i }.each do |key|
    begin
      instance_eval("#{conf[key]}")
    rescue Exception => e
      raise Fluent::ConfigError, "#{key} #{conf[key]}\n" + e.to_s
    end
  end

  @filters = []
  conf.keys.select { |key| key =~ /^filter\d+$/ }.sort_by { |key| key.sub('filter', '').to_i }.each do |key|
    begin
      @filters << instance_eval("lambda do |tag, time, record| #{conf[key]} end")
    rescue Exception => e
      raise Fluent::ConfigError, "#{key} #{conf[key]}\n" + e.to_s
    end
  end

  if @filters.empty?
    raise Fluent::ConfigError, "missing filters"
  end
end

#filter_stream(tag, es) ⇒ Object 



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# File 'lib/fluent/plugin/filter_eval.rb', line 46

def filter_stream(tag, es)
  new_es = MultiEventStream.new
  es.each { |time, record|
    begin
      filtered_record = filter_record(tag, time, record)
      new_es.add(*filtered_record) if filtered_record
    rescue => e
      router.emit_error_event(tag, time, record, e)
    end
  }
  new_es
end