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Contents
# encoding: utf-8
# A machine that receives alerts during simulation and records a recording
# according to its implementation. Alerts are received via +#alert+ method.
# The recording bein recorded is stored in @recording instance variable.
# This can be reset by +#reset!+ method, which also accepts arguments to
# change the recorder settings and/or insert another recording.
#
class YPetri::Simulation::Recorder
★ YPetri::Simulation::Dependency
SAMPLING_DECIMAL_PLACES = 5
attr_reader :features, :recording
delegate :simulation, to: "self.class"
delegate :reconstruct, :reduce, to: :recording
# Initializes the recorder. Takes 2 arguments: +:features+ expecting the
# feature set to record during simulation, and +:recording+, expecting the
# initial state of the recording.
#
def initialize features: net.State.marking( free_pp ),
recording: nil,
**nn
@features = net.State.features( features )
if recording then reset! recording: recording else reset! end
end
# Construct a new recording based on +features+.
#
def new_recording
features.new_dataset
end
# Assigns to @recording a new Dataset instance. Without arguments, the new
# recording is empty. With +:recording+ named argument supplied, the new
# recording is filled with the prescribed contents.
#
def reset! **nn
@features = net.State.features( nn[:features] || @features )
@recording = new_recording
@recording.update Hash[ nn[:recording] ] if nn[:recording]
end
# Hook to be called by simulators whenever there is a state change. The
# decision to sample is then the business of the recorder.
#
def alert
sample! # vanilla recorder samples at every occasion
end
private
# Records the current state as a pair { sampling_event => system_state }.
#
def sample! event
record = simulation.get_features( features )
recording[ event ] = record.dump( precision: SAMPLING_DECIMAL_PLACES )
end
end # class YPetri::Simulation::Recorder
Version data entries
24 entries across 24 versions & 1 rubygems