Clear out Resque messages that have Decode errors.

gistfile1.rb

# Use from console, was required as old messages were incorrectly encoded and placed on the failed queue 
# preventing us to view the failed queue.

include Resque::Helpers

Resque::Failure.count.times do |index|
  puts "Checking #{index}"
  begin                                   
    decode Resque.redis.lindex(:failed, index)
  rescue Resque::Helpers::DecodeException
    puts "deleting #{index} from failed queue"
    id = rand(0xffffff)
    Resque.redis.lset(:failed, index, id)
    puts Resque.redis.lrem(:failed, 1, id)
  else
    puts "ignore #{index}"
  end
end