alpha-one/src/validate-redis-is-running.coffee

ideas about recurring tasks in Web- and Backend-Application building

############################################################################################################
TRM                       = require 'coffeenode-trm'
rpr                       = TRM.rpr.bind TRM
badge                     = 'α1/validate-redis-is-running'
log                       = TRM.get_logger 'plain', badge
info                      = TRM.get_logger 'info',  badge
whisper                   = TRM.get_logger 'whisper',  badge
alert                     = TRM.get_logger 'alert', badge
debug                     = TRM.get_logger 'debug', badge
warn                      = TRM.get_logger 'warn',  badge
help                      = TRM.get_logger 'help',  badge
#...........................................................................................................
redis                     = require 'redis'

############################################################################################################
module.exports = ( options ) ->
  client  = redis.createClient options

  #.........................................................................................................
  client.on 'error', ( error ) ->
    if /Redis connection to .* failed - connect ECONNREFUSED/.test error[ 'message' ]
      alert """
        you either forgot to start your Redis instance or it does not match the configuration:
        #{rpr options}
        """
      help "execute `redis-server` or demonize Redis"
    throw error
  #.........................................................................................................
  client.set 'A1-test', 'test', ( error, response ) ->
    info "Redis response: #{rpr response}"