Class: LogStash::Codecs::ESBulk

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/codecs/es_bulk.rb

Overview

This codec will decode the www.elasticsearch.org/guide/en/elasticsearch/reference/current/docs-bulk.html[Elasticsearch bulk format] into individual events, plus metadata into the ‘@metadata` field.

Encoding is not supported at this time as the Elasticsearch output submits Logstash events in bulk format.

Instance Method Summary collapse

Constructor Details

#initialize(params = {}) ⇒ ESBulk

Returns a new instance of ESBulk.



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# File 'lib/logstash/codecs/es_bulk.rb', line 15

def initialize(params={})
  super(params)
  @lines = LogStash::Codecs::Line.new
  @lines.charset = "UTF-8"
  @state = :initial
  @metadata = Hash.new
end

Instance Method Details

#decode(data) ⇒ Object 



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# File 'lib/logstash/codecs/es_bulk.rb', line 24

def decode(data)
  @lines.decode(data) do |bulk|
    begin
      line = LogStash::Json.load(bulk.get("message"))
      case @state
      when :metadata
        event = LogStash::Event.new(line)
        event.set("@metadata", @metadata)
        yield event
        @state = :initial
      when :initial
        @metadata = line[line.keys[0]]
        @metadata["action"] = line.keys[0].to_s
        @state = :metadata
        if line.keys[0] == 'delete'
          event = LogStash::Event.new()
          event.set("@metadata", @metadata)
          yield event
          @state = :initial
        end
      end
    rescue LogStash::Json::ParserError => e
      @logger.error("JSON parse failure. ES Bulk messages must in be UTF-8 JSON", :error => e, :data => data)
    end
  end
end