Class: Upperkut::Strategy

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/upperkut/strategy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Util

#decode_json_items, #encode_json_items, #to_underscore

Constructor Details

#initialize(worker, options = {}) ⇒ Strategy

Returns a new instance of Strategy.



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# File 'lib/upperkut/strategy.rb', line 10

def initialize(worker, options = {})
  @options    = options
  @redis_options = options.fetch(:redis, {})
  @redis_pool = setup_redis_pool
  @worker     = worker
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/upperkut/strategy.rb', line 8

def options
  @options
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/upperkut/strategy.rb', line 51

def clear
  redis { |conn| conn.del(key) }
end

#fetch_items(batch_size = 1000) ⇒ Object 



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# File 'lib/upperkut/strategy.rb', line 25

def fetch_items(batch_size = 1000)
  stop = [batch_size, size].min

  items = redis do |conn|
    conn.multi do
      stop.times { conn.lpop(key) }
    end
  end

  decode_json_items(items)
end

#latency ⇒ Object 



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# File 'lib/upperkut/strategy.rb', line 43

def latency
  item = redis { |conn| conn.lrange(key, 0, 0) }
  item = decode_json_items(item).first
  return 0 unless item
  now = Time.now.to_f
  now - item.fetch('enqueued_at', Time.now).to_f
end

#push_items(items = []) ⇒ Object 



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# File 'lib/upperkut/strategy.rb', line 17

def push_items(items = [])
  items = [items] if items.is_a?(Hash)
  return false if items.empty?
  redis do |conn|
    conn.rpush(key, encode_json_items(items))
  end
end

#size ⇒ Object 



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# File 'lib/upperkut/strategy.rb', line 37

def size
  redis do |conn|
    conn.llen(key)
  end
end