Class: RedisBatch::Queue

Inherits:
Object
  • Object
show all
Defined in:
lib/redis_batch/queue.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(namespace = self.class.name) ⇒ Queue

Returns a new instance of Queue.



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# File 'lib/redis_batch/queue.rb', line 3

def initialize(namespace = self.class.name)
  @namespace = namespace
  @client = Client.instance
  @client.with  { |redis| RedisBatch::Lua.function_load(redis) }
end

Class Method Details

.processing? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/redis_batch/queue.rb', line 17

def self.processing?
  @client.with { |redis| redis.keys("#{@namespace}_takeout_*").any? }
end

Instance Method Details

#abort_all ⇒ Object 



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# File 'lib/redis_batch/queue.rb', line 21

def abort_all
  return unless processing?
  @client.with do |redis|
    redis.keys("#{@namespace}_takeout_*").each do |key|
      abort_processing(key, redis)
    end
  end
end

#add(*items) ⇒ Object 



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# File 'lib/redis_batch/queue.rb', line 9

def add(*items)
  @client.with { |redis| redis.rpush(queue_key, items) }
end

#count ⇒ Object 



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# File 'lib/redis_batch/queue.rb', line 13

def count
  @client.with { |redis| redis.llen(queue_key) }
end

#take(count: 1, client: @client) ⇒ Object 



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# File 'lib/redis_batch/queue.rb', line 30

def take(count: 1, client: @client)
  values = client.with do |redis|
    redis.call("FCALL", "rb_lmove", 2, queue_key, take_key, count)
  end
  yield values
  client.with { |redis| redis.del(take_key) }
rescue => error
  client.with { |redis| abort_processing(take_key, redis) }
  raise error
end