Class: FileModel::Adapter

Inherits:
Object
  • Object
show all
Defined in:
lib/file_model/adapter.rb

Constant Summary collapse

EXPIRATION_TIME = 
5
BASE_DIR = 
"/tmp/file_model_cache"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(something) ⇒ Adapter

Returns a new instance of Adapter.



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# File 'lib/file_model/adapter.rb', line 2

def initialize something
  @something = something
end

Class Method Details

.cache_dir ⇒ Object 



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# File 'lib/file_model/adapter.rb', line 32

def cache_dir
  "#{BASE_DIR}/#{Time.now.min}/#{rand(1_000_000)}"
end

.clear_expired_cache ⇒ Object 



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# File 'lib/file_model/adapter.rb', line 36

def clear_expired_cache
  time = Time.now.min
  dir = BASE_DIR.to_dir
  if dir.exist?
    dir.to_dir.entries do |entry|
      entry_time = entry.name.to_i
      entry.delete if (entry_time > time) or (time > (entry_time + EXPIRATION_TIME))
    end
  end
end

Instance Method Details

#to_file ⇒ Object 



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# File 'lib/file_model/adapter.rb', line 6

def to_file
  self.class.clear_expired_cache

  if something.respond_to? :to_file
    something.to_file
  elsif something.is_a? Hash
    data = something["tempfile"] || something[:tempfile] || raise("no file!")
    name = something["filename"] || something[:filename] || raise("no filename!")
    file = "#{self.class.cache_dir}/#{name}".to_file
    file.write data.read
    file
  elsif something.is_a? File
    path = something.path
    name = File.basename path
    file = "#{self.class.cache_dir}/#{name}".to_file
    file.write something.read
    file
  else
    raise "unknown file format!"
  end
end