Module: Resque::Plugins::QueuePriority::Priority

Defined in:
lib/resque/plugins/queue_priority/priority.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/resque/plugins/queue_priority/priority.rb', line 9

def self.included(klass)
  klass.instance_eval do
    alias_method :queues_without_priority, :queues
    alias_method :queues, :queues_with_priority
  end
end

Instance Method Details

#queues_with_priority ⇒ Object 



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# File 'lib/resque/plugins/queue_priority/priority.rb', line 16

def queues_with_priority
  all_queues = queues_without_priority
  result = []
  default_idx = -1, default_fairly = false;

  # Walk the priority patterns, extract each into its own bucket
  buckets = Resque.priority_buckets
  buckets.each do |bucket|
    bucket_pattern = bucket['pattern']
    fairly = bucket['fairly']

    # note the position of the default bucket for inserting the remaining queues at that location
    if bucket_pattern == 'default'
      default_idx = result.size
      default_fairly = fairly
      next
    end

    bucket_queues, remaining = [], []
    
    patterns = bucket_pattern.split(',')
    patterns.each do |pattern|
      pattern = pattern.strip
      
      if pattern =~ /^!/
        negated = true
        pattern = pattern[1..-1]
      end
      
      patstr = pattern.gsub(/\*/, ".*")
      pattern = /^#{patstr}$/
    
    
      if negated
        bucket_queues -= bucket_queues.grep(pattern)
      else
        bucket_queues.concat(all_queues.grep(pattern))
      end
    
    end
    
    bucket_queues.uniq!
    bucket_queues.shuffle! if fairly
    all_queues = all_queues - bucket_queues
    
    result << bucket_queues
    
  end

  # insert the remaining queues at the position the default item was at (or last)
  all_queues.shuffle! if default_fairly
  result.insert(default_idx, all_queues)
  result.flatten!

  return result
end