Bring Kotlin to Google Cloud - hobby projects to explore the possibility

Kotlin - the much love language in Android development work can work out of the scope of your Android phone. With the favor of support from Google, now we can have this language run on Google Cloud. This talk from Toan will be about hobby projects he built on 1 single language - Kotlin to connect components together to see what is possible to build using such a combination of Kotlin and Google Cloud.

Transcript

1. About speaker
   Hello! I’m Toan
   Android Lead @Inspectorio (check out our opening positions!)
   https://toan.mobi
   toantran-ea
   toan_mobi
   

   View Slide

2. View Slide

3. Agenda
   1. Why would we care about Kotlin?
   2. Context of the talk
   3. Explore the support of Google Cloud for Kotlin
   4. Idea
   5. Implementation (live coding)
   6. What I learn from the journey
   

   View Slide

4. Why would we care about Kotlin?
   1. Language fluency
   2. Java + Kotlin inter-ops capability
   3. Great extensibility of the language
   4. Growing community with serious investment from Jetbrains and
   Google
   

   View Slide

5. Context of the talk - I’m looking for
   1. Provide the backend capability for the
   Android app with little/no language
   change.
   2. Scalable and easy to deploy
   3. Code sharing between Android app and
   backend app
   

   View Slide

6. Context of the talk - I’m looking for
   

   View Slide

7. How it’s possible
   KOTLIN JVM
   Google Cloud
   Support
   

   View Slide

8. Google Cloud support Kotlin?
   

   View Slide

9. Hobby app - Calories Intake tracker
   1. Create a new log entry for food intake
   2. Read all the entries I have
   3. Update a certain log entry
   4. Delete log entry
   

   View Slide

10. Pick the stacks
    1. Google App engine as the option to use on
    Google Cloud
    2. Ktor as the framework for my API app
    3. Google Cloud Datastore as the Storage
    Backend (NoSQL - key-value idea)
    ×
    

    View Slide

11. Basic setup
    1. Create a local project based on Ktor to start
    2. Create project on Google Cloud Platform console
    3. Enable billing for your project
    4. Install Google Cloud SDK
    5. Install Java 8 or or higher on your local
    development machine
    

    View Slide

12. Get some code!
    

    View Slide

13. Test it out!
    

    View Slide

14. Switch to live code
    

    View Slide

15. What I learn from the journey
    1. I should have the project setup with App Engine template to debug the
    app properly.
    2. I had some hiccups with Ktor framework in encoding
    3. Short learning curve
    4. Quick to prototype and show it live
    5. Quick deploy (you see!)
    6. Comfortable work with Kotlin
    

    View Slide

16. Step by step guide
    Blog series - Bring Kotlin to cloud — a hobby project to
    explore the possibility - Medium
    https://medium.com/@toantran/bring-kotlin-to-cloud-a-hobby-project-to-explore-the-possibility-part-2-7e96abc6d75f
    

    View Slide

17. Thank you
    

    View Slide