Class: LogStash::Filters::Truncate

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/filters/truncate.rb

Overview

Allows you to truncate fields longer than a given length.

This truncates on bytes values, not character count. In practice, this should mean that the truncated length is somewhere between ‘length_bytes` and `length_bytes - 6` (UTF-8 supports up to 6-byte characters).

Defined Under Namespace

Modules: Truncator

Instance Method Summary collapse

Instance Method Details

#filter(event) ⇒ Object 



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# File 'lib/logstash/filters/truncate.rb', line 41

def filter(event)
  if @fields
    truncated = Truncator.truncate_all(fields, event, @length_bytes)
  else
    # TODO(sissel): I couldn't find a better way to get the top level keys for
    # an event. Nor could I find a way to iterate over all the keys in an
    # event, so this may have to suffice.
    fields = event.to_hash.keys.map { |k| "[#{k}]" }
    truncated = Truncator.truncate_all(fields, event, @length_bytes)
  end
  
  if truncated
    @logger.debug("truncated one or more fields from event to length #{@length_bytes}")
    filter_matched(event)
  end  
end

#register ⇒ Object 



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# File 'lib/logstash/filters/truncate.rb', line 37

def register
  # nothing
end