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Rust (Rocket) HTTP Server

This example uses Rocket, a popular Rust web framework. To run this example, follow these steps:

1. Install the CLI and a container runtime engine, for example Docker. Use the unikraft CLI or the legacy kraft CLI.

2. Clone the examples repository and cd into the examples/httpserver-rust1.81-rocket0.5/ directory:

Code
git clone https://github.com/unikraft-cloud/examples
cd examples/httpserver-rust1.81-rocket0.5

Make sure to log into Unikraft Cloud and pick a metro close to you. This guide uses fra (Frankfurt, 🇩🇪):

When done, invoke the following command to deploy this app on Unikraft Cloud:

The output shows the instance address and other details:

Code
[●] Deployed successfully!
 │
 ├────────── name: httpserver-rust181-rocket05-tuwq3
 ├────────── uuid: b6fe13e4-93b7-402b-bdec-1bc4d81bc275
 ├───────── state: running
 ├─────────── url: https://empty-bobo-n3htmpye.fra.unikraft.app
 ├───────── image: httpserver-rust181-rocket05@sha256:23a7a6e155758e6e8f75e9570f0aec5fb744f08c1bad2454d7386367c5ea45d6
 ├───── boot time: 17.41 ms
 ├──────── memory: 256 MiB
 ├─────── service: empty-bobo-n3htmpye
 ├── private fqdn: httpserver-rust181-rocket05-tuwq3.internal
 ├──── private ip: 172.16.6.6
 └────────── args: /server

In this case, the instance name is httpserver-rust181-rocket05-tuwq3 and the address is https://empty-bobo-n3htmpye.fra.unikraft.app. They're different for each run.

Use curl to query any of the Rocket server's paths, for example:

Code
curl https://empty-bobo-n3htmpye.fra.unikraft.app/wave/Rocketeer/100

Code
👋 Hello, 100 year old named Rocketeer!

You can list information about the instance by running:

Code
NAME                               FQDN                                  STATE    STATUS        IMAGE                                         MEMORY   VCPUS  ARGS     BOOT TIME
httpserver-rust181-rocket05-tuwq3  empty-bobo-n3htmpye.fra.unikraft.app  running  1 minute ago  httpserver-rust181-rocket05@sha256:23a7a6...  256 MiB  1      /server  17412us

When done, you can remove the instance:

Customize your app

To customize the app, update the files in the repository, listed below:

• src/main.rs: the actual server implementation
• Cargo.toml: the Cargo package manager configuration file
• Kraftfile: the Unikraft Cloud specification
• Dockerfile: the Docker-specified app filesystem

The following options are available for customizing the app:

• If you only update the implementation in the src/main.rs source file, you don't need to make any other changes.

• If you create any new source files, copy them into the app filesystem by using the COPY command in the Dockerfile. If you add new Rust source code files, be sure to configure required dependencies in the Cargo.toml file.

• If you build a new executable, update the cmd line in the Kraftfile and replace /server with the path to the new executable.

• More extensive changes may require extending the Dockerfile (see Dockerfile syntax reference).

Learn more

Use the --help option for detailed information on using Unikraft Cloud:

Or visit the CLI Reference or the legacy CLI Reference.