This is an example Swift project for Exis. You can run it on your own Linux machine if you have Docker installed.
docker build -t exis-hello-swift .
docker run -t exis-hello-swift
Visit www.exis.io to learn how to host it on Exis!
| File | Purpose |
|---|---|
| Backend/main.swift | is the entry point for the example code. |
| Backend/Package.swift | lists dependencies including Riffle. |
| Run.yaml | tells us how to execute your code on Exis. |
| Dockerfile | can be used for local testing if you have Docker installed. |
The Swift package manager is still under heavy development. Follow these simple conventions to ensure that your code will compile for Exis.
- Surround the contents with a
#if os(Linux)/#endifblock to avoid errors in Xcode. - Do not set a name for the package. In that way the compiler will default to building an executable with the same name as the directory containing your main.swift.
- Be sure to list Riffle as a dependency (https://github.com/exis-io/swiftRiffleUbuntu.git).
The Run file tells Exis how to execute your code. Minimally, it should have two lines. In the following example, "Base: exis-swift:r4" tells us that you are using Swift with the fourth version of the Exis base image. We try not to change the base images very often, but specifying the version means your code will continue working long after you have tested it. The second line, "Command: Backend" tells us that your executable will be named "Backend", which for Swift, should also match the name of the directory containing your main.swift file.
Base: exis-swift:r4
Command: Backend
The Dockerfile is optional and is provided so that you can test on your own machine. If you are hosting on Exis, we will use your Run file instead.
If you have installed on your computer, you can run the docker build
and docker run commands listed above.