Checkout Overview Architecture

Checkout creation 

• Checkout webapp interactions
• Requirements 
• Plugins
• Payment means
• User service

Checkout webapp main interactions

Simplified checkout creation process

Checkout webapp main interactions

Let's dive into the code

• checkout controllers
• backbone routers
• js components
• hbs templates

Requirements

• Common requirements vs Lob requirements
• FinalizationRequirement model
• DataField type
• Requirement providers
• Requirement level

Plugins

• Two kinds :
  • lob plugins : FLIGHT, CAR, TRAIN, HOTEL, GROUND, FEE
  • third party plugins : APPROVAL, CDF validation
• Define a common interface between lobs/third party and checkout service
• most of endpoints are lob agnostic endpoint 
• third party are useful for requirement

Web components

• Several web components are integrated in checkout webapp
  • payment component
  • trip catcher
  • air cancellation page
• Advantages
  • Release directly by config
  • Decouple responsability
  • Facilitate contribution

Payment means

• Checkout-service calls payment logic service to get the customer fop
• payment logic calls efop
• Binding between paymentsection and finalizationrequirements
• payment component
  • story book
  • config to release a new version checkout.payment_component.version
  • binding of data between checkout webapp and component

Mocked tests

• How it works

https://confluence.expedia.biz/display/ECT/Checkout+service+mocked+tests

• create a two run configurations in checkout service 
  • application in mock mode
  • mock server application
• How to run a scenario 
• Parameter to pass by checkout-orchestrator-service in VM options : -Dtest.use.orchestrator=true
• Need to have checkout-orchestrator-service running locally

Checkout Model Mapping

• 1 checkout is composed of 
  • List of travelers
  • List of product items
• 1 or several transactions are created when finalizing the booking
• 1 transaction can be composed of 
  • only one product when the booking is made separately
  • all products from the checkout
• Product items are booked together if (in that case only one transaction is created:
  • use payment logic config is enabled
  • never for multi pax
  • Hotel Gds + FEE

Payment means

• call of payment logic to get

  • the supplier fops

  • the payment plan 

• main classes
  • PaymentManager
  • InitializePaymentsModels

Trip interactions

Action links :

• depends on transaction status :
  • DRAFT or FAILURE : book and delete action
  • SUCCESS, WARNING or PENDING : 
    • change
    • hide pnr for train
    • confirm

Save For Later Use Case

Save For Later Use Case

User did not book and save his checkout for later

• creates transaction in PENDING state
• map action links to the transaction
• book action link redirect to checkout
• we don't save the PAYMENT MEANS