Class: LogStash::Util::Charset

Inherits:
Object
  • Object
show all
Defined in:
lib/logstash/util/charset.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(charset) ⇒ Charset

Returns a new instance of Charset.



8
9
10
11
 
# File 'lib/logstash/util/charset.rb', line 8

def initialize(charset)
  @charset = charset
  @charset_encoding = Encoding.find(charset)
end

Instance Attribute Details

#logger ⇒ Object

Returns the value of attribute logger.



6
7
8
 
# File 'lib/logstash/util/charset.rb', line 6

def logger
  @logger
end

Instance Method Details

#convert(data) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
# File 'lib/logstash/util/charset.rb', line 13

def convert(data)
  data.force_encoding(@charset_encoding)

  # NON UTF-8 charset declared.
  # Let's convert it (as cleanly as possible) into UTF-8 so we can use it with JSON, etc.
  return data.encode(Encoding::UTF_8, :invalid => :replace, :undef => :replace) unless @charset_encoding == Encoding::UTF_8

  # UTF-8 charset declared.
  # Some users don't know the charset of their logs or just don't know they
  # can set the charset setting.
  unless data.valid_encoding?
    # A silly hack to help convert some of the unknown bytes to
    # somewhat-readable escape codes. The [1..-2] is to trim the quotes
    # ruby puts on the value.
    return data.inspect[1..-2].tap do |escaped|
      @logger.warn("Received an event that has a different character encoding than you configured.", :text => escaped, :expected_charset => @charset)
    end
  end

  return data
end