poseidon-memcached/src/driver.litcoffee

A future wrapper around the Node Memcached driver using Poseidon.

Driver
======
The `Driver` class stores configurations for multiple caches. It also caches
the clients for quick access and reuse.

    Memcached = require 'memcached'


    class Driver
      @_configuration: {}
      @_connections: {}
      @configure: (connName, connConfig) ->
        throw new Error('Configuration object required') unless connConfig?
        @_configuration[connName] = connConfig.servers
        return

      @openConnection: (connName) ->
        throw Error('Connection not configured') unless @_configuration[connName]?
        if @_connections[connName]? then return @_connections[connName]
        @_connections[connName] = new Memcached(@_configuration[connName])

      @closeConnection: (connName) ->
        throw Error('Connection does not exist') unless @_connections[connName]?
        @_connections[connName].end()
        delete @_connections[connName]
        return

      @reset: () ->
        for connName, connConfig of @_configuration
          if @_connections[connName]? then @closeConnection(connName)
          delete @_configuration[connName]
        return

      @shutdown: () ->
        for connName, connConfig of @_configuration
          if @_connections[connName]? then @closeConnection(connName)
        return

    module.exports = Driver