class Fluent::Plugin::RewriteOutput

Attributes

rewrite_rule[R]

Public Instance Methods

configure(conf) click to toggle source
Calls superclass method
# File lib/fluent/plugin/out_rewrite.rb, line 17
def configure(conf)
  require 'fluent/plugin/rewrite_rule'

  super

  if @remove_prefix
    @removed_prefix_string = @remove_prefix + '.'
    @removed_length = @removed_prefix_string.length
  end
  if @add_prefix
    @added_prefix_string = @add_prefix + '.'
  end

  @rewrite_rule = Fluent::RewriteRule.new(self, conf)
end
process(tag, es) click to toggle source
# File lib/fluent/plugin/out_rewrite.rb, line 33
def process(tag, es)
  _tag = tag.clone

  if @remove_prefix and
    ((tag.start_with?(@removed_prefix_string) && tag.length > @removed_length) || tag == @remove_prefix)
    tag = tag[@removed_length..-1] || ''
  end

  if @add_prefix
    tag = tag && tag.length > 0 ? @added_prefix_string + tag : @add_prefix
  end

  es.each do |time, record|
    filtered_tag, record = @rewrite_rule.rewrite(tag, record)
    if filtered_tag && record && _tag != filtered_tag
      router.emit(filtered_tag, time, record)
    else
      if @enable_warnings
        $log.warn "Can not emit message because the tag(#{tag}) has not changed. Dropped record #{record}"
      end
    end
  end
end