Class: Lumberjack::Tags

Inherits:
Object
  • Object
show all
Defined in:
lib/lumberjack/tags.rb

Class Method Summary collapse

Class Method Details

.expand_runtime_values(hash) ⇒ Hash

Ensure keys are strings and expand any values in a hash that are Proc’s by calling them and replacing the value with the result. This allows setting global tags with runtime values.

Parameters:

  • hash (Hash) —

    The hash to transform.

Returns:

  • (Hash) —

    The hash with string keys and expanded values.



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# File 'lib/lumberjack/tags.rb', line 31

def expand_runtime_values(hash)
  return nil if hash.nil?
  if hash.all? { |key, value| key.is_a?(String) && !value.is_a?(Proc) }
    return hash
  end

  copy = {}
  hash.each do |key, value|
    if value.is_a?(Proc) && (value.arity == 0 || value.arity == -1)
      value = value.call
    end
    copy[key.to_s] = value
  end
  copy
end

.stringify_keys(hash) ⇒ Hash

Transform hash keys to strings. This method exists for optimization and backward compatibility. If a hash already has string keys, it will be returned as is.

Parameters:

  • hash (Hash) —

    The hash to transform.

Returns:

  • (Hash) —

    The hash with string keys.



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# File 'lib/lumberjack/tags.rb', line 11

def stringify_keys(hash)
  return nil if hash.nil?
  if hash.keys.all? { |key| key.is_a?(String) }
    hash
  elsif hash.respond_to?(:transform_keys)
    hash.transform_keys(&:to_s)
  else
    copy = {}
    hash.each do |key, value|
      copy[key.to_s] = value
    end
    copy
  end
end