oci-spec

Crates.iooci-spec
lib.rsoci-spec
version0.6.5
sourcesrc
created_at2019-05-28 14:24:53.108448
updated_at2024-02-20 18:55:38.739265
descriptionOpen Container Initiative Specifictions in Rust
homepagehttps://github.com/containers/oci-spec-rs
repositoryhttps://github.com/containers/oci-spec-rs
max_upload_size
id137523
size281,018
Toru Komatsu (utam0k)

documentation

https://docs.rs/oci-spec

README

oci-spec-rs

ci gh-pages crates.io codecov docs docs.rs dependencies license

Open Container Initiative (OCI) Specifications for Rust

This library provides a convenient way to interact with the specifications defined by the Open Container Initiative (OCI).

[dependencies]
oci-spec = "0.6.5"

Compiler support: requires rustc 1.54+

If you want to propose or cut a new release, then please follow our release process documentation.

Image Format Spec Examples

  • Load image manifest from filesystem
use oci_spec::image::ImageManifest;

let image_manifest = ImageManifest::from_file("manifest.json").unwrap();
assert_eq!(image_manifest.layers().len(), 5);
  • Create new image manifest using builder
use oci_spec::image::{
    Descriptor, 
    DescriptorBuilder, 
    ImageManifest, 
    ImageManifestBuilder, 
    MediaType, 
    SCHEMA_VERSION
};

let config = DescriptorBuilder::default()
            .media_type(MediaType::ImageConfig)
            .size(7023)
            .digest("sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7")
            .build()
            .expect("build config descriptor");

let layers: Vec<Descriptor> = [
    (
        32654,
        "sha256:9834876dcfb05cb167a5c24953eba58c4ac89b1adf57f28f2f9d09af107ee8f0",
    ),
    (
        16724,
        "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b",
    ),
    (
        73109,
        "sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736",
    ),
]
    .iter()
    .map(|l| {
    DescriptorBuilder::default()
        .media_type(MediaType::ImageLayerGzip)
        .size(l.0)
        .digest(l.1.to_owned())
        .build()
        .expect("build layer")
    })
    .collect();

let image_manifest = ImageManifestBuilder::default()
    .schema_version(SCHEMA_VERSION)
    .config(config)
    .layers(layers)
    .build()
    .expect("build image manifest");

image_manifest.to_file_pretty("my-manifest.json").unwrap();
  • Content of my-manifest.json
{
  "schemaVersion": 2,
  "config": {
    "mediaType": "application/vnd.oci.image.config.v1+json",
    "digest": "sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
    "size": 7023
  },
  "layers": [
    {
      "mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
      "digest": "sha256:9834876dcfb05cb167a5c24953eba58c4ac89b1adf57f28f2f9d09af107ee8f0",
      "size": 32654
    },
    {
      "mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
      "digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b",
      "size": 16724
    },
    {
      "mediaType": "application/vnd.oci.image.layer.v1.tar+gzip",
      "digest": "sha256:ec4b8955958665577945c89419d1af06b5f7636b4ac3da7f12184802ad867736",
      "size": 73109
    }
  ]
}

Distribution Spec Examples

  • Create a list of repositories
use oci_spec::distribution::RepositoryListBuilder;

let list = RepositoryListBuilder::default()
            .repositories(vec!["busybox".to_owned()])
            .build().unwrap();

Contributing

This project welcomes your PRs and issues. Should you wish to work on an issue, please claim it first by commenting on the issue that you want to work on it. This is to prevent duplicated efforts from contributers on the same issue.

Commit count: 329

cargo fmt