Module: LogStash::StringInterpolation

Extended by:
StringInterpolation
Included in:
StringInterpolation
Defined in:
lib/logstash/string_interpolation.rb

Constant Summary collapse

MIN_FLOAT_BEFORE_SCI_NOT =

Floats outside of these upper and lower bounds are forcibly converted to scientific notation by Float#to_s

0.0001
MAX_FLOAT_BEFORE_SCI_NOT = 
1000000000000000.0
CACHE = 
ThreadSafe::Cache.new
TEMPLATE_TAG_REGEXP = 
/%\{[^}]+\}/

Instance Method Summary collapse

Instance Method Details

#evaluate(event, template) ⇒ Object 



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# File 'lib/logstash/string_interpolation.rb', line 17

def evaluate(event, template)
  if template.is_a?(Float) && (template < MIN_FLOAT_BEFORE_SCI_NOT || template >= MAX_FLOAT_BEFORE_SCI_NOT)
    return ("%.15f" % template).sub(/0*$/,"")
  end

  template = template.to_s

  return template if not_cachable?(template)

  compiled = CACHE.get_or_default(template, nil) || CACHE.put(template, compile_template(template))
  compiled.evaluate(event)
end