Class: Fluent::Plugin::MultiConditionSelectorOutput

Inherits:
Output
  • Object
show all
Defined in:
lib/fluent/plugin/out_multi_condition_selector.rb

Defined Under Namespace

Classes: RubyPlaceholderExpander

Constant Summary collapse

PATTERN_MAX_NUM = 
20
BUILTIN_CONFIGURATIONS = 
%W(@id @type @label type output_tag remove_keys renew_record keep_keys enable_ruby renew_time_key auto_typecast tag_else record_else tag)

Instance Method Summary collapse

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_multi_condition_selector.rb', line 54

def configure(conf)
  super
  # ここで、BUILTIN_CONFIGURATIONS に入っていないものがあった場合はerrorをraise
  conf.each_pair { |k, v|
    next if BUILTIN_CONFIGURATIONS.include?(k) || k.match(/^condition\d\d?$/) || k.match(/^tag\d\d?$/)

    raise Fluent::ConfigError, 'out_multi_condition_selector: some weird config is set {'+k.to_s+':'+v.to_s+'}'
  }

  # conditionsを読み込む
  @conditions = []
  conf.elements.select { |element| element.name.match(/^condition?$/) }
      .each do |param|
    condition = {}
    data_record = {}

    param.elements.select { |element| element.name.match(/^data?$/) }.each do |data|
      data.each_pair do |key, value|
        data_record.merge!(key => convert_value(value))
      end
    end

    param.each_pair do |key, value|
      condition.merge!(key => convert_value(value))
    end

    condition.merge!("data" => data_record)
    @conditions.push(condition)
  end


  if @remove_keys
    @remove_keys = @remove_keys.split(',')
  end
  if @keep_keys
    raise Fluent::ConfigError, 'out_multi_condition_selector: `renew_record` must be true to use `keep_keys`' unless @renew_record
    @keep_keys = @keep_keys.split(',')
  end

  placeholder_expander_params = {
      :log           => log,
      :auto_typecast => @auto_typecast, # It should always be true
  }

  @placeholder_expander =
      if @enable_ruby
        # require utilities which would be used in ruby placeholders
        require 'pathname'
        require 'uri'
        require 'cgi'
        RubyPlaceholderExpander.new(placeholder_expander_params)
      else
        p 'WARN!! Hey! You should enable ruby!!!'
        PlaceholderExpander.new(placeholder_expander_params)
      end


  @hostname = Socket.gethostname
end

#process(tag, es) ⇒ Object 



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# File 'lib/fluent/plugin/out_multi_condition_selector.rb', line 114

def process(tag, es)
  tag_parts = tag.split('.')
  tag_prefix = tag_prefix(tag_parts)
  tag_suffix = tag_suffix(tag_parts)
  placeholder_values = {
      'tag'        => tag,
      'tags'       => tag_parts, # for old version compatibility
      'tag_parts'  => tag_parts,
      'tag_prefix' => tag_prefix,
      'tag_suffix' => tag_suffix,
      'hostname'   => @hostname,
  }
  es.each {|time, record|
    placeholder_values.merge!({
                                  'time'     => @placeholder_expander.time_value(time),
                                  'record'   => record,
                              })
                              
    # TODO: ここの処理よくないって evaluate
    matched_conditions, aditional_data = evaluate_condition(@conditions, placeholder_values )

    if (@at_least_one && matched_conditions.size > 0) || @at_least_one == false
      new_record = reform(record, aditional_data, placeholder_values)
      if @renew_time_key && new_record.has_key?(@renew_time_key)
        time = new_record[@renew_time_key].to_i
      end
      @remove_keys.each {|k| new_record.delete(k) } if @remove_keys
      new_record.merge!("conditions" => matched_conditions)
      router.emit(@tag, time, new_record)
    end
  }
rescue => e
  log.warn "out_multi_condition_selector: #{e.class} #{e.message} #{e.backtrace.first}"
end