A First Look at Oracle Functions

I am super happy to have gotten the opportunity to test out Oracle Functions through the Cloud Native Limited Availability Program. When I last tried out running serverless functions in Oracle Cloud during the Oracle Groundbreaker APAC Tour last year, there were two options available. Either run my own Fn server in a virtual machine or set it up in a managed Kubernetes cluster. Now, a third option is available!

Oracle Functions is built on Oracle Cloud Infrastructure (OCI) and offer a managed environment for the Fn project. This means that you don’t have to manually manage an Fn cluster yourself. It also means that any function that runs on Oracle Functions will also run on any Fn server, something that offers you full flexibility.

The Fn project supports functions written in Go, Java, Node.js, Python or Ruby. The fn-duke function that I am using in this test is, of course, written in Java.

Deployment is done by pointing to the Function Application you want your function to be part of.

The function can be configured through the func.yaml file or using the fn CLI tool as shown here:

The configured property will then be shown in the detail view in your Oracle Cloud Function Dashboard.

Invoking the function can be done by using the Fn CLI Tool

Or by sending a signed request using a convenience script called oci-curl provided by Oracle.

Conclusion

Oracle has made a good choice when investing in the Fn project and use it as a basis for the Oracle Functions platform. It integrates extremely well with Fn and no extra tooling is needed to get started.

Oracle Groundbreaker APAC Tour 2018

This year, I was so lucky to get the chance to be part of the Oracle Groundbreaker APAC Tour 2018. The cities that I joined the tour was Perth and Melbourne in Australia as well as Wellington in New Zealand.

Perth, Australia

Copenhagen – (Singapore) – Perth
Gone swimming…

In Perth, I did a talk called Serverless with Java. I demoed various FaaS options available, including running Fn Project on Oracle Cloud. Between the sessions, I also managed to slip outside for a swim in the ocean.

Melbourne, Australia

Perth – Melbourne
New bush hat

In Melbourne, I had two sessions scheduled. The first was an informal Q&A with the local Java User Group. We had great discussions regarding the 6 months release cadence of Java, we discussed Jakarta EE and Eclipse MicroProfile and talked about Java development and Java user groups in general.

Later that afternoon, I did my Serverless with Java talk for a small, but an enthusastic crowd. 

Wellington, New Zealand

Melbourne – Wellington
Installing fn on OKE

The last stop on the journey was Wellington, New Zealand. Even here, it was the Serverless with Java talk that was put on the schedule.

To spice things up a little, I did a last minute try to get fn up and running on a managed Kubernetes cluster in Oracle Cloud Infrastructure.

I was close, so the next time I do this talk this will be part of the demos…

Wrap up

This was a fantastic trip, even considering the busy travel schedule and probably spending more time in the air or at airports than on the ground. The trip home from Wellington took ~36 hours door-to-door with short layovers in Auckland, Perth, and Singapore.

WLG – AKL
AKL – PER
PER – SIN
SIN – CPH

Source Code

The Function Duke project on GitHub contains all the source code for my serverless talks.