Say whatever redis tells you to

redis-say.rb

#!/usr/bin/env ruby

%w(uri logger rubygems redis childprocess).each do |dep|
  begin
    require dep
  rescue LoadError
    puts "The #{dep} gem could not be loaded! Try running: gem install #{dep}"
  end
end

$logger = Logger.new(STDOUT)

begin
  uri = URI.parse(ENV['REDISTOGO_URL'])
rescue URI::InvalidURIError => e
  puts 'REDISTOGO_URL is not a valid URI!'
end

$redis = Redis.new({
  :timeout => 0,
  :user => uri.user,
  :password => uri.password,
  :host => uri.host,
  :port => uri.port
})

def shutdown!
  $logger.info "Shutting down..."
  $redis.disconnect
  exit(0)
end

Signal.trap(:INT) do
  $logger.info "Received SIGINT"
  shutdown!
end

Signal.trap(:TERM) do
  $logger.info "Received SIGTERM"
  shutdown!
end

$redis.subscribe('say') do |on|

  on.subscribe do |channel, subscriptions|
    $logger.info "Subscribed to ##{channel} (#{subscriptions} subscriptions)"
  end

  on.unsubscribe do |channel, subscriptions|
    $logger.info "Unsubscribed from ##{channel} (#{subscriptions} subscriptions)"
  end

  on.message do |channel, msg|
    begin
      process = ChildProcess.build("say", msg).start
    rescue LaunchError => e
      $logger.error e
    end
  end

end

say.coffee

# Send arbitrary strings to redis subscribers
#
# say <text> - Publishes <text> to "say" channel
# saying <text> - "say" <text> and tell us what was said

Url   = require("url")
Redis = require("redis")

module.exports = (robot) ->
  config = Url.parse(process.env.REDISTOGO_URL)
  client = Redis.createClient(config.port, config.hostname)

  if config.auth
    client.auth config.auth.split(":")[1]

  robot.respond /say (.*)/i, (msg) ->
    text = msg.match[1]
    client.publish("say", text)

  robot.respond /saying (.*)/i, (msg) ->
    text = msg.match[1]
    client.publish("say", text)
    msg.send("Saying: " + text)

I before E except after C.

nice! but doesnt hubot do this?

@deadlyicon your shellout version of the say script was fine, but it doesn't work very well when hubot itself is running on a remote host. I'm just using redis as an intermediary to do the same thing.