Class: DynportTools::Settings

Inherits:
Object
  • Object
show all
Defined in:
lib/dynport_tools/settings.rb

Constant Summary collapse

SETTINGS_KEY = 
"settings"
SETTINGS_UPDATED_AT_KEY = 
"#{SETTINGS_KEY}/updated_at"

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.defaults ⇒ Object

Returns the value of attribute defaults.



6
7
8
 
# File 'lib/dynport_tools/settings.rb', line 6

def defaults
  @defaults
end

.redis ⇒ Object

Returns the value of attribute redis.



6
7
8
 
# File 'lib/dynport_tools/settings.rb', line 6

def redis
  @redis
end

Class Method Details

.all ⇒ Object 



73
74
75
76
77
78
 
# File 'lib/dynport_tools/settings.rb', line 73

def all
  if @all.nil? || expired?
    reload!
  end
  @all
end

.changed? ⇒ Boolean

Returns:

  • (Boolean) 


89
90
91
 
# File 'lib/dynport_tools/settings.rb', line 89

def changed?
  @cached_at.nil? || redis.get(SETTINGS_UPDATED_AT_KEY).to_i != @cached_at.to_i
end

.convert_value_for_key(key, value) ⇒ Object 



55
56
57
58
59
60
61
62
63
 
# File 'lib/dynport_tools/settings.rb', line 55

def convert_value_for_key(key, value)
  if defaults[key].is_a?(Numeric)
    value.to_i
  elsif [true, false].include?(defaults[key])
    value == "true"
  else
    value.to_s
  end
end

.define_methods_for_key_and_default(key, default) ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/dynport_tools/settings.rb', line 21

def define_methods_for_key_and_default(key, default)
  self.class.send(:define_method, key) do
    get(key)
  end
  
  self.class.send(:define_method, :"set_#{key}") do |value|
    set_value(key, value)
  end
  
  # bool methods
  if [true, false].include?(default)
    self.class.send(:define_method, "#{key}?") do
      get(key)
    end
    
    self.class.send(:define_method, :"disable_#{key}!") do
      set_value(key, false)
    end
    
    self.class.send(:define_method, :"enable_#{key}!") do
      set_value(key, true)
    end
  end
end

.expired? ⇒ Boolean

Returns:

  • (Boolean) 


85
86
87
 
# File 'lib/dynport_tools/settings.rb', line 85

def expired?
  @cached_at && Time.now - @cached_at > 60
end

.get(key) ⇒ Object 



65
66
67
68
69
70
71
 
# File 'lib/dynport_tools/settings.rb', line 65

def get(key)
  if value = all[key.to_s]
    convert_value_for_key(key, value)
  else
    defaults[key]
  end
end

.reload!(timestamp = nil) ⇒ Object 



80
81
82
83
 
# File 'lib/dynport_tools/settings.rb', line 80

def reload!(timestamp = nil)
  @all = redis.hgetall(SETTINGS_KEY) 
  @cached_at = timestamp || Time.now
end

.set(key_or_hash, default_or_nil = nil) ⇒ Object 



8
9
10
11
12
13
14
15
16
17
18
19
 
# File 'lib/dynport_tools/settings.rb', line 8

def set(key_or_hash, default_or_nil = nil)
  self.defaults ||= Hash.new
  if key_or_hash.is_a?(Hash)
    key_or_hash.each do |key, default|
      self.defaults[key.to_sym] = default
      define_methods_for_key_and_default(key.to_sym, default)
    end
  elsif !default_or_nil.nil?
    self.defaults[key_or_hash.to_sym] = default_or_nil
    define_methods_for_key_and_default(key_or_hash.to_sym, default_or_nil)
  end
end

.set_value(key, value) ⇒ Object 



46
47
48
49
50
51
52
53
 
# File 'lib/dynport_tools/settings.rb', line 46

def set_value(key, value)
  time = Time.now
  redis.multi do
    redis.hset(SETTINGS_KEY, key, value)
    redis.set(SETTINGS_UPDATED_AT_KEY, time.to_i)
  end
  reload!(time)
end