Class: RedlockForCollection::Collection

Inherits:
Object
  • Object
show all
Defined in:
lib/redlock_for_collection/collection.rb

Constant Summary collapse

DEFAULT_TTL = 
10_000
DEFAULT_MIN_VALIDITY = 
5_000
DEFAULT_KEY_METHOD = 
'key'.freeze
DEFAULT_KEY_PREFIX = 
'prefix'.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(objects, options, pool) ⇒ Collection

Returns a new instance of Collection.



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# File 'lib/redlock_for_collection/collection.rb', line 10

def initialize(objects, options, pool)
  @objects = objects
  @options = options
  @pool    = pool

  init_options
end

Instance Attribute Details

#objects ⇒ Object (readonly)

Returns the value of attribute objects.



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# File 'lib/redlock_for_collection/collection.rb', line 8

def objects
  @objects
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/redlock_for_collection/collection.rb', line 8

def options
  @options
end

#pool ⇒ Object (readonly)

Returns the value of attribute pool.



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# File 'lib/redlock_for_collection/collection.rb', line 8

def pool
  @pool
end

Instance Method Details

#lock(&block) ⇒ Object 



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# File 'lib/redlock_for_collection/collection.rb', line 19

def lock(&block)
  locked_objects   = []
  unlocked_objects = []

  locks_info         = []
  expired_locks_info = []

  @objects.each do |object|
    @pool.with do |redlock|
      lock_info = redlock.lock(build_key_for(object), @options[:ttl])

      # Check if ttl is enough
      if lock_info && (lock_info[:validity] > (@options[:min_validity]))
        locked_objects << object
        locks_info     << lock_info
      else
        expired_locks_info << lock_info if lock_info
        unlocked_objects   << object
      end
    end
  end

  begin
    block.yield(locked_objects, unlocked_objects)
  ensure
    # Release the all acquired locks
    unlock(expired_locks_info)
    unlock(locks_info)
  end
end