Slides for the iteration #1 of Scala Laboratory

1. Globus
Scala Laboratory. Iteration #1

2. Logistics
● open-source and/or charity related projects
● 1 mentor and team of 4-5 developers in the
team
● 1-2 week iterations (depending on iteration
goal)

3. Topics Covered
● development environment
● server-side development
● web-development
● testing
● building, releasing and deploying
● monitoring and troubleshooting

4. Project Globus. POD Framework
● many high-tech companies are organized as
flat and network structures these days
● POD Framework - implementation of a
network structure adopted in Adform (http:
//bit.ly/pod-fwk)
● Globus is a service that digitalizes PODs

5. Globus: chart of PODs

6. Globus: POD

7. Globus: employee profile

8. Globus: list of employees

9. Model

10. Development Environment
Action Item: setup development environment
● download IDEA 14: Community Edition ~> https://www.
jetbrains.com/idea/download/
○ it has Scala and SBT out-of-the-box
● download and setup SBT ~> http://www.scala-sbt.org/

11. Project Layout in SBT
Action Item: create project structure in SBT ~>
https://twitter.github.io/scala_school/sbt.html
● project – project definition files
○ project/build/Build.scala – the main project definition file
● src/main – your app code goes here, in a subdirectory indicating the code’s language (e.g.
src/main/scala, src/main/java)
● src/main/resources – static files you want added to your jar
● src/test – like src/main, but for tests

12. Model in Scala
Action Item: use class, trait, abstract class,
case class, where appropriate, to build the
model
● https://twitter.github.io/scala_school/basics.html
● https://twitter.github.io/scala_school/basics2.html

13. Building the project
Action Item: import the project in IDEA, and
compile it (either in IDEA or in SBT)

14. Continuous Integration
Action Items:
- configure travis.yml to compile Scala code
- send pull-request for code-review
- once pull-request is approved, make sure
that Travis CI has successfully compiled the
project

15. Business Logic
Action Items:
- in collaboration with team-mates, define business logic
layer, taking constraints into account. E.g.
- admin creates users (all roles, except POD Lead)
- any number of roles may be added to user, but there should be no 2
Leads or Keepers in one POD
- refer to initial set of requirements ~> http://bit.ly/globus-
req

16. Writing Business Logic in Scala
Action Items:
- define design of business model layer. Refer to
- https://twitter.github.io/scala_school/collections.html
- https://twitter.github.io/scala_school/pattern-matching-and-functional-
composition.html
- keep in mind that REST API will be a first-class citizen
- split the work on creating business model layer into
independent parts