Class: CacheLocal::File

Inherits:
Object
  • Object
show all
Defined in:
lib/cache_local/file.rb

Instance Method Summary collapse

Constructor Details

#initialize(path, namespace = nil) ⇒ File

Returns a new instance of File.



5
6
7
8
9
10
11
 
# File 'lib/cache_local/file.rb', line 5

def initialize(path, namespace = nil)
  @path = path
  @namespace = namespace
  if namespace
    FileUtils.mkdir_p(::File.join(path, namespace)) unless FileTest.exist?(::File.join(path, namespace))
  end
end

Instance Method Details

#delete(key) ⇒ Object 



35
36
37
 
# File 'lib/cache_local/file.rb', line 35

def delete(key)
  ::File.delete(filename(key)) if ::File.exists?(filename(key))
end

#get(key) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
# File 'lib/cache_local/file.rb', line 19

def get(key)
  return nil unless ::File.exists?(filename(key))

  file = ::File.open(filename(key), 'r')
  cache = Marshal.load(file)
  is_expired = cache[:expiration_time] != 0 && Time.now - file.mtime > cache[:expiration_time]
  file.close

  if is_expired
    delete(key)
    return nil
  end

  cache[:value]
end

#set(key, value, expiration_time = 0) ⇒ Object 



13
14
15
16
17
 
# File 'lib/cache_local/file.rb', line 13

def set(key, value, expiration_time = 0)
  file = ::File.open(filename(key), 'w')
  Marshal.dump({value: value, expiration_time: expiration_time}, file)
  file.close
end