Alex Magana alex-magana

git clone [email protected]:YOUR-USERNAME/YOUR-FORKED-REPO.git

cd into/cloned/fork-repo
git remote add upstream [email protected]:ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

	# Circuit Breaker
	# - Circuit starts in a "closed" state.
	# - Here, all calls to a given service go through
	# - Consecutive failures are recorded.
	# - When threshold is reached, circuit trips and the circuit gets into an "open" state.
	# - In open state, calls to a given service raise CircuitBrokenException
	# - Circuit remains "open" until failure timeout elapses
	# - After failure timeout elapses, circuit gets into "half-open" state
	# - Here, a call to aservice will go through
	# - If the call fails, the circuit goes back to "open" state

	<html>
	<head>
	<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/js/materialize.min.js"></script>
	<script>
	$(document).ready(function(){
	$('ul.tabs').tabs({
	swipeable : true
	});
	});

	# The class, Printer takes a generic parser. It doesn't depend on the
	# low-level details of PdfFormatter or HtmlFormatter classes.
	class Printer
	def initialize(data, formatter)
	@data = data
	@formatter = formatter
	end

	def print(formatter)
	formatter.format(@data)

	# Dependency inversion violation
	# Here we see print_pdf and print_html
	# depend on the formatter classes intanciated in them
	class Printer
	def initialize(data)
	@data = data
	end

	def print_pdf
	PdfFormatter.new.format(@data)

	# We create 2 interfaces, each specific to the user type
	# that utilises it
	class CoffeeMachineUserInterface
	def select_drink_type
	# select drink type logic
	end

	def select_portion
	# select portion logic
	end

	# Interface segregation principle violation
	class CoffeeMachineInterface
	def select_drink_type
	# select drink type logic
	end

	def select_portion
	# select portion logic
	end

	# The class, Square violates Liskov substitution principle since it
	# replaces the behaviour of set_height and set_width by modifying
	# width and height respectively
	class Rectangle
	def set_height(height)
	@height = height
	end

	def set_width(width)
	@width = width

	# Here we pass the file format parser as a paremeter
	# This design allows for extension by means of adding other
	# classes that support other formats, doing this
	# without having to modify class, UsageFileParser
	class UsageFileParser
	def initialize(client, parser)
	@client = client
	@parser = parser
	end

	# Violation
	# This class violates OCP since we would need to modify this class
	# when the need arises to support other file formats apart from
	# .csv and .xml
	class UsageFileParser
	def initialize(client, usage_file)
	@client = client
	@usage_file = uasge_file
	end