Class: Resque::DataStore::QueueAccess

Inherits:
Object
  • Object
show all
Defined in:
lib/resque/data_store.rb

Instance Method Summary collapse

Constructor Details

#initialize(redis) ⇒ QueueAccess

Returns a new instance of QueueAccess.



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# File 'lib/resque/data_store.rb', line 101

def initialize(redis)
  @redis = redis
end

Instance Method Details

#everything_in_queue(queue) ⇒ Object 



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# File 'lib/resque/data_store.rb', line 140

def everything_in_queue(queue)
  @redis.lrange(redis_key_for_queue(queue), 0, -1)
end

#list_range(key, start = 0, count = 1) ⇒ Object

Private: do not call



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# File 'lib/resque/data_store.rb', line 155

def list_range(key, start = 0, count = 1)
  if count == 1
    @redis.lindex(key, start)
  else
    Array(@redis.lrange(key, start, start+count-1))
  end
end

#peek_in_queue(queue, start = 0, count = 1) ⇒ Object

Examine items in the queue.

NOTE: if count is 1, you will get back an object, otherwise you will

get an Array.  I'm not making this up.



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# File 'lib/resque/data_store.rb', line 125

def peek_in_queue(queue, start = 0, count = 1)
  list_range(redis_key_for_queue(queue), start, count)
end

#pop_from_queue(queue) ⇒ Object

Pop whatever is on queue



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# File 'lib/resque/data_store.rb', line 112

def pop_from_queue(queue)
  @redis.lpop(redis_key_for_queue(queue))
end

#push_to_queue(queue, encoded_item) ⇒ Object 



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# File 'lib/resque/data_store.rb', line 104

def push_to_queue(queue,encoded_item)
  @redis.pipelined do |piped|
    watch_queue(queue, redis: piped)
    piped.rpush redis_key_for_queue(queue), encoded_item
  end
end

#queue_names ⇒ Object 



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# File 'lib/resque/data_store.rb', line 129

def queue_names
  Array(@redis.smembers(:queues))
end

#queue_size(queue) ⇒ Object

Get the number of items in the queue



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# File 'lib/resque/data_store.rb', line 117

def queue_size(queue)
  @redis.llen(redis_key_for_queue(queue)).to_i
end

#remove_from_queue(queue, data) ⇒ Object

Remove data from the queue, if it’s there, returning the number of removed elements



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# File 'lib/resque/data_store.rb', line 145

def remove_from_queue(queue,data)
  @redis.lrem(redis_key_for_queue(queue), 0, data)
end

#remove_queue(queue) ⇒ Object 



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# File 'lib/resque/data_store.rb', line 133

def remove_queue(queue)
  @redis.pipelined do |piped|
    piped.srem(:queues, [queue.to_s])
    piped.del(redis_key_for_queue(queue))
  end
end

#watch_queue(queue, redis: @redis) ⇒ Object

Private: do not call



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# File 'lib/resque/data_store.rb', line 150

def watch_queue(queue, redis: @redis)
  redis.sadd(:queues, [queue.to_s])
end