Class: LogStash::Codecs::JSONLines

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

Overview

This codec will decode streamed JSON that is newline delimited. Encoding will emit a single JSON string ending in a ‘@delimiter` NOTE: Do not use this codec if your source input is line-oriented JSON, for example, redis or file inputs. Rather, use the json codec. More info: This codec is expecting to receive a stream (string) of newline terminated lines. The file input will produce a line string without a newline. Therefore this codec cannot work with line oriented inputs.

Instance Method Summary collapse

Instance Method Details

#decode(data, &block) ⇒ Object 



39
40
41
42
43
 
# File 'lib/logstash/codecs/json_lines.rb', line 39

def decode(data, &block)
  @buffer.extract(data).each do |line|
    parse(@converter.convert(line), &block)
  end
end

#encode(event) ⇒ Object 



45
46
47
48
49
 
# File 'lib/logstash/codecs/json_lines.rb', line 45

def encode(event)
  # Tack on a @delimiter for now because previously most of logstash's JSON
  # outputs emitted one per line, and whitespace is OK in json.
  @on_event.call(event, "#{event.to_json}#{@delimiter}")
end

#flush(&block) ⇒ Object 



51
52
53
54
55
56
 
# File 'lib/logstash/codecs/json_lines.rb', line 51

def flush(&block)
  remainder = @buffer.flush
  if !remainder.empty?
    parse(@converter.convert(remainder), &block)
  end
end

#register ⇒ Object 



33
34
35
36
37
 
# File 'lib/logstash/codecs/json_lines.rb', line 33

def register
  @buffer = FileWatch::BufferedTokenizer.new(@delimiter)
  @converter = LogStash::Util::Charset.new(@charset)
  @converter.logger = @logger
end