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require 'statesman'
require 'ably/modules/statesman_monkey_patch'
module Ably::Modules
# Module providing Statesman StateMachine functionality
#
# Expects method #logger to be defined
#
# @api private
module StateMachine
def self.included(klass)
klass.class_eval do
include Statesman::Machine
end
klass.extend Ably::Modules::StatesmanMonkeyPatch
klass.extend ClassMethods
end
# Alternative to Statesman's #transition_to that:
# * log state change failures to {Logger}
# * raise an exception on the {Ably::Realtime::Channel}
#
# @return [void]
def transition_state(state, *args)
unless result = transition_to(state, *args)
exception = exception_for_state_change_to(state)
object.emit :error, exception
logger.fatal "#{self.class}: #{exception.message}"
end
result
end
# @return [Statesman History Object]
def previous_transition
history[-2]
end
# @return [Symbol]
def previous_state
previous_transition.to_state if previous_transition
end
# @return [Ably::Exceptions::InvalidStateChange]
def exception_for_state_change_to(state)
error_message = "#{self.class}: Unable to transition from #{current_state} => #{state}"
Ably::Exceptions::InvalidStateChange.new(error_message, nil, 80020)
end
module ClassMethods
private
def is_error_type?(error)
error.kind_of?(Ably::Models::ErrorInfo) || error.kind_of?(StandardError)
end
end
end
end
Version data entries
24 entries across 24 versions & 2 rubygems