Module: Keystok::Cache

Included in:
Client
Defined in:
lib/keystok/cache.rb

Overview

Module for handling cache write and read operations

Instance Method Summary collapse

Instance Method Details

#cache_file_exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/keystok/cache.rb', line 14

def cache_file_exist?
  File.exist?(cache_file_path)
end

#cache_file_path(tmp_dir = nil) ⇒ Object 



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# File 'lib/keystok/cache.rb', line 9

def cache_file_path(tmp_dir = nil)
  tmp_dir ||= (@config && @config[:tmp_dir]) ? @config[:tmp_dir] : '.'
  @cache_file_path ||= File.join(tmp_dir, 'keystok_cache.data')
end

#cache_stream(method = :read) ⇒ Object 



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# File 'lib/keystok/cache.rb', line 18

def cache_stream(method = :read)
  case method
  when :write
    mode = 'wb'
  else
    mode = 'r'
  end
  File.open(cache_file_path, mode)
end

#load_cache(iostream = nil) ⇒ Object 



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# File 'lib/keystok/cache.rb', line 28

def load_cache(iostream = nil)
  Keystok.logger.warn('Loading data from cache')
  iostream ||= cache_stream
  iostream.read
end

#write_cache(cache_data, iostream = nil) ⇒ Object 



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# File 'lib/keystok/cache.rb', line 34

def write_cache(cache_data, iostream = nil)
  iostream ||= cache_stream(:write)
  iostream.write(cache_data)
  iostream.flush
end