Class: Future::Value

Inherits:
Object
  • Object
show all
Defined in:
lib/futurevalue/value.rb

Constant Summary collapse

MINIMUM_WORKERS = 
7

Class Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ Value

Returns a new instance of Value.



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# File 'lib/futurevalue/value.rb', line 11

def initialize(&block)
  self.class.pool.workers = MINIMUM_WORKERS  if self.class.pool.workers < MINIMUM_WORKERS

  @response_queue = Queue.new
  self.class.pool << lambda do
    begin
      @response_queue << block.call
    rescue Exception => @exception
      @response_queue << nil 
    end
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/futurevalue/value.rb', line 37

def method_missing(method, *args, &block)      
  self.value.send(method, *args, &block) 
end

Class Attribute Details

.pool ⇒ Object (readonly)

Returns the value of attribute pool.



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# File 'lib/futurevalue/value.rb', line 8

def pool
  @pool
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/futurevalue/value.rb', line 49

def inspect 
  if !ready?
    "#<#{self.class.name} @value=[pending]>"
  else
    unless @exception
      "#<#{self.class.name} @value=#{self.value.inspect}>"
    else
      "#<#{self.class.name} #{@exception.inspect}>"
    end
  end
end

#ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/futurevalue/value.rb', line 33

def ready?
  @response_queue.nil? || !@response_queue.empty?
end

#to_s ⇒ Object 



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# File 'lib/futurevalue/value.rb', line 41

def to_s
  self.value.to_s
end

#to_str ⇒ Object 



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# File 'lib/futurevalue/value.rb', line 45

def to_str
  self.value.to_str
end

#value ⇒ Object

Raises:

  • (@exception) 


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# File 'lib/futurevalue/value.rb', line 24

def value            
  if @response_queue
    @value = @response_queue.pop
    @response_queue = nil
  end
  raise @exception if @exception
  @value
end