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) ⇒ Object

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.



25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
 
# File 'lib/lumberjack/tags.rb', line 25

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) ⇒ Object

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.



8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/lumberjack/tags.rb', line 8

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