Class: Bits::Cache::FileCache

Inherits:
Object
  • Object
show all
Defined in:
lib/bits/cache.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ FileCache

Returns a new instance of FileCache.



7
8
9
10
 
# File 'lib/bits/cache.rb', line 7

def initialize(path)
  @path = path
  @cache = Hash.new
end

Instance Attribute Details

#cache ⇒ Object (readonly)

Returns the value of attribute cache.



5
6
7
 
# File 'lib/bits/cache.rb', line 5

def cache
  @cache
end

Instance Method Details

#[](key) ⇒ Object 



23
24
25
26
27
 
# File 'lib/bits/cache.rb', line 23

def [](key)
  bucket = bucket_for(bucket_name key)
  return nil if bucket.nil?
  bucket[key]
end

#[]=(key, value) ⇒ Object 



18
19
20
21
 
# File 'lib/bits/cache.rb', line 18

def []=(key, value)
  bucket = bucket_for(bucket_name key)
  bucket[key] = value
end

#bucket_for(bucket_name) ⇒ Object 



12
13
14
15
16
 
# File 'lib/bits/cache.rb', line 12

def bucket_for(bucket_name)
  bucket = cache[bucket_name]
  return bucket unless bucket.nil?
  cache[bucket_name] = load_bucket bucket_name
end

#bucket_name(string) ⇒ Object 



47
48
49
 
# File 'lib/bits/cache.rb', line 47

def bucket_name(string)
  string[0..1].each_byte.map { |b| sprintf("%02x",b) }.join
end

#save ⇒ Object 



35
36
37
38
39
40
41
42
43
44
45
 
# File 'lib/bits/cache.rb', line 35

def save
  FileUtils.mkdir_p @path unless File.directory? @path

  @cache.each do |bucket_name, bucket|
    path = File.join @path, "#{bucket_name}.yml"

    File.open path, 'w' do |f|
      YAML.dump bucket, f
    end
  end
end

#set(content) ⇒ Object 



29
30
31
32
33
 
# File 'lib/bits/cache.rb', line 29

def set(content)
  content.each do |key, value|
    self[key] = value
  end
end