module NewRelic::LanguageSupport
Public Instance Methods
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# File lib/new_relic/language_support.rb, line 90 def bundled_gem?(gem_name) return false unless defined?(Bundler) NewRelic::Helper.rubygems_specs.map(&:name).include?(gem_name) rescue => e ::NewRelic::Agent.logger.info("Could not determine if third party #{gem_name} gem is installed", e) false end
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# File lib/new_relic/language_support.rb, line 76 def camelize(string) camelized = string.downcase camelized.split(/\-|\_/).map(&:capitalize).join end
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# File lib/new_relic/language_support.rb, line 81 def camelize_with_first_letter_downcased(string) camelized = camelize(string) camelized[0].downcase.concat(camelized[1..-1]) end
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# File lib/new_relic/language_support.rb, line 10 def can_fork? # this is expensive to check, so we should only check once return @@forkable if !@@forkable.nil? @@forkable = Process.respond_to?(:fork) end
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# File lib/new_relic/language_support.rb, line 55 def constantize(const_name) const_name.to_s.sub(/\A::/, '').split('::').inject(Object) do |namespace, name| begin result = namespace.const_get(name) # const_get looks up the inheritance chain, so if it's a class # in the constant make sure we found the one in our namespace. # # Can't help if the constant isn't a class... if result.is_a?(Module) expected_name = "#{namespace}::#{name}".gsub(/^Object::/, '') return unless expected_name == result.to_s end result rescue NameError nil end end end
TODO: OLD RUBIES - RUBY_VERSION < 2.6
Ruby 2.6 introduced an improved version of ‘Object.const_get` that respects the full namespace of the input and doesn’t just grab the first constant matching the string to the right of the last ‘::’. Once we drop support for Ruby 2.5 and below, the only value this custom method will provide beyond ‘Object.const_get` itself is to automatically catch NameError.
see: github.com/rails/rails/commit/7057ccf6565c1cb5354c1906880119276a9d15c0
With Ruby 2.6+, this method can be defined like so: def constantize(constant_as_string_or_symbol)
Object.const_get(constant_as_string_or_symbol)
rescue NameError end
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# File lib/new_relic/language_support.rb, line 21 def gc_profiler_enabled? gc_profiler_usable? && ::GC::Profiler.enabled? && !::NewRelic::Agent.config[:disable_gc_profiler] end
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# File lib/new_relic/language_support.rb, line 17 def gc_profiler_usable? defined?(::GC::Profiler) && !jruby? end
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# File lib/new_relic/language_support.rb, line 34 def jruby? RUBY_ENGINE == 'jruby' end
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# File lib/new_relic/language_support.rb, line 25 def object_space_usable? if jruby? require 'jruby' JRuby.runtime.is_object_space_enabled else defined?(::ObjectSpace) end end
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# File lib/new_relic/language_support.rb, line 86 def snakeize(string) string.gsub(/(.)([A-Z])/, '\1_\2').downcase end