Module: Interlock::Config

Defined in:
lib/interlock/config.rb

Constant Summary collapse

CONFIG_FILE = 
"#{RAILS_ROOT}/config/memcached.yml"

Class Method Summary collapse

Class Method Details

.memcached! ⇒ Object

Configure memcached for this app.



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# File 'lib/interlock/config.rb', line 40

def memcached!
  Interlock.config[:namespace] << "-#{RAILS_ENV}"
  
  unless defined? Object::CACHE
    klass = MemCacheWithConsistentHashing rescue MemCache
    Object.const_set('CACHE', klass.new(Interlock.config))
    CACHE.servers = Array(Interlock.config[:servers])
  end
  
  class << CACHE
    def read(*args)
      get args.first
    end
    
    def write(name, content, options = {})             
      set(name, 
        content, 
        options.is_a?(Hash) ? options[:ttl] : Interlock.config[:ttl] )
    end          
  end  
        
end

.rails! ⇒ Object

Configure Rails to use the memcached store for fragments, and optionally, sessions.



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# File 'lib/interlock/config.rb', line 66

def rails!
  # Memcached fragment caching is mandatory
  ActionController::Base.fragment_cache_store = CACHE
  
  if Interlock.config[:sessions]
    ActionController::Base.session_store = :mem_cache_store
    ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS.update 'cache' => CACHE      
  end      
end

.run! ⇒ Object

Load the configuration file, if available, and then set up the Memcached instance, Rails settings, and CACHE constants. Should be more or less compatible with Cache_fu.



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# File 'lib/interlock/config.rb', line 24

def run!
  if File.exist?(CONFIG_FILE)
    config = YAML.load_file(CONFIG_FILE)
    config.deep_symbolize_keys!

    Interlock.config.merge!(config[:defaults] || {})
    Interlock.config.merge!(config[RAILS_ENV.to_sym] || {})
  end
  
  memcached!
  rails!
end