Using Spring with Optic

Optic is easy to use with Spring, no special library or large code changes required.

api start Command#

Let's say we have a simple Spring server that we usually develop with on localhost:3005.

Optic needs to know how to start our API and control the port it starts on#

Our optic.yml file would include our start command (such as ./application). The start command in this case also sets the port to which the application binds. Optic injects a $PORT environment variable for our application to listen on when api start is run. Spring uses the SERVER_PORT environment variable by default, and no code changes should be necessary.

name: Spring API
tasks:
command: export SERVER_PORT=$PORT ; ./gradlew bootRun
inboundUrl: https://localhost:3005

Verifying with api check start#

The setup tool will guide you through running checks to assure Optic is running successfully with your API project. You should see everything pass at this point. If you don't, it's most likely that you're not starting the API on the $PORT Optic provides. The Optic check will also report any other common issues it detects and give you steps and suggestions to resolve them.

Should you need any more help, or want to chat about the process, please reach out to us. You can schedule a quick chat with the maintainers or open an issue on GitHub.

Run your API through Optic#

At this point you should be ready to run api start and document your API with Optic! Optic will observe your API traffic locally, and report on the routes and traffic shape it sees in the Optic dashboard. The next step is to start building your baseline specification

Contributions to this article from: @acunniffe @LouManglass