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#! /usr/bin/env ruby
# -*- coding: UTF-8 -*-
#
# from the project top directory :
#
# run this script which builds the example system and spin it untill it's empty:
# $ ruby -Ilib examples/hello_world.rb
#
# or load the system from a JSON specification ( created with dom0.hibernate! )
# $ ruby -Ilib -r ./examples/hello_world.rb bin/edoors.rb examples/hello_world.json
#
require 'edoors'
#
class InputDoor < Edoors::Door
#
# see Iota class for the different methods to override
def start!
# stimulate myself on system boot up
# if an action is set, but no destination is, it will be self.
# see Door#_send
send_p require_p(Edoors::Particle), Edoors::ACT_GET
end
#
def receive_p p
if p.action==Edoors::ACT_GET
# if desired (not necessary here), call reset! to clear particle's data,
# meaning merge particle, payload, destinations
# see Particle#reset!
p.reset!
# manipulate the particle's payload
p.set_data 'txt', "hello world"
# will follow the non conditional link.
# see Room#_send and Room#_try_links
send_p p
else
# we can release it or let the Door do it.
# see Door#process_p
release_p p
end
end
#
end
#
class OutputDoor < Edoors::Door
#
def receive_p p
if p.action!=Edoors::ACT_ERROR
puts p.get_data('txt')
end
# let the door release the particle
# see Door#process_p
end
#
end
#
if $0 == __FILE__
#
# This will schedule the particles and act as the top level Room
dom0 = Edoors::Spin.new 'dom0'
# This will feed a receive particle with data and send it back
input = InputDoor.new 'input', dom0
# This will output the receive data and let the system recycle the particle
output = OutputDoor.new 'output', dom0
# This will be the unconditinal link leading from 'input' to 'output'
dom0.add_link Edoors::Link.new('input', 'output', nil, nil)
#
# schedule the spinning particles untill the system cools down
dom0.spin!
#
# you can save the system state after it's run,
# but to be able to use it to bootstrap, the hibernation attribute must be set to false
# otherwise start! method is not called
# dom0.hibernate! 'hello_world.json'
end
#
# EOF
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