Zudoku
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Rust (Actix Web)

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

  1. Install the kraft CLI tool and a container runtime engine, for example Docker.

  2. Clone the examples repository and cd into the examples/http-rust1.75-actix-web4/ directory:

Code(bash)
 
git clone https://github.com/kraftcloud/examples
cd examples/http-rust1.75-actix-web4/

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

Code(bash)
 
# Set Unikraft Cloud access token
export UKC_TOKEN=token
# Set metro to Frankfurt, DE
export UKC_METRO=fra

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

Code(bash)
 
kraft cloud deploy -p 443:8080 .

The output shows the instance address and other details:

Code(ansi)
 
[●] Deployed successfully!
 │
 ├────────── name: http-rust175-actix-web4-3pj27
 ├────────── uuid:33e9b4ba-58d7-4b3a-b9dd-4c406c0e7b07
 ├───────── state: running
 ├─────────── url: https://autumn-silence-wupu2nus.fra.unikraft.app
 ├───────── image: http-rust175-actix-web4@sha256:11723705230f0f4545d2be7e4867dc67b396870769e91f05e2fa6d9da94f9b59
 ├───── boot time: 11.67 ms
 ├──────── memory: 128 MiB
 ├─────── service: autumn-silence-wupu2nus
 ├── private fqdn: http-rust175-actix-web4-3pj27.internal
 ├──── private ip: 172.16.3.3
 └────────── args: /server

In this case, the instance name is http-rust175-actix-web4-3pj27 and the address is https://autumn-silence-wupu2nus.fra.unikraft.app. They're different for each run.

Use curl to query the Unikraft Cloud instance of the Rust-based HTTP web server:

Code(bash)
 
curl https://autumn-silence-wupu2nus.fra.unikraft.app
curl https://autumn-silence-wupu2nus.fra.unikraft.app/hey
Code(text)
 
Hello world!
Hey there!

You can list information about the instance by running:

Code(bash)
 
kraft cloud instance list
Code(text)
 
NAME                           FQDN                                      STATE    CREATED AT     IMAGE                                                      MEMORY   ARGS     BOOT TIME
http-rust175-actix-web4-3pj27  autumn-silence-wupu2nus.fra.unikraft.app  running  10 minutes ago  http-rust175-actix-web4@sha256:11723705230f0f4545d2be7...  128 MiB  /server  11672us

When done, you can remove the instance:

Code(bash)
 
kraft cloud instance remove http-rust175-actix-web4-3pj27

Customize your app

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

  • src/main.rs: the actual 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:

Code(bash)
 
kraft cloud --help

Or visit the CLI Reference.

Last modified on
Rust (Tokio)Skipper