module Opbeat::Util

@api private

Public Class Methods

constantize(camel_cased_word) click to toggle source

From github.com/rails/rails/blob/861b70e92f4a1fc0e465ffcf2ee62680519c8f6f/activesupport/lib/active_support/inflector/methods.rb#L249

Tries to find a constant with the name specified in the argument string.

'Module'.constantize     # => Module
'Test::Unit'.constantize # => Test::Unit

The name is assumed to be the one of a top-level constant, no matter whether it starts with “::” or not. No lexical context is taken into account:

C = 'outside'
module M
  C = 'inside'
  C               # => 'inside'
  'C'.constantize # => 'outside', same as ::C
end

NameError is raised when the name is not in CamelCase or the constant is unknown.

# File lib/opbeat/util/constantize.rb, line 23
def self.constantize(camel_cased_word)
  names = camel_cased_word.split('::')

  # Trigger a built-in NameError exception including the ill-formed constant in the message.
  Object.const_get(camel_cased_word) if names.empty?

  # Remove the first blank element in case of '::ClassName' notation.
  names.shift if names.size > 1 && names.first.empty?

  names.inject(Object) do |constant, name|
    if constant == Object
      constant.const_get(name)
    else
      candidate = constant.const_get(name)
      next candidate if constant.const_defined?(name, false)
      next candidate unless Object.const_defined?(name)

      # Go down the ancestors to check if it is owned directly. The check
      # stops when we reach Object or the end of ancestors tree.
      constant = constant.ancestors.inject do |const, ancestor|
        break const    if ancestor == Object
        break ancestor if ancestor.const_defined?(name, false)
        const
      end

      # owner is in Object, so raise
      constant.const_get(name, false)
    end
  end
end
nanos() click to toggle source
# File lib/opbeat/util.rb, line 9
def self.nanos
  now = Time.now.utc
  now.to_i * 1_000_000_000 + now.usec * 1_000
end
nearest_minute() click to toggle source
# File lib/opbeat/util.rb, line 4
def self.nearest_minute
  now = Time.now.utc
  now - now.to_i % 60
end