Struct Descriptor 

pub struct Descriptor {
    pub media_type: MediaType,
    pub digest: Digest,
    pub size: u64,
    pub urls: Vec<String>,
    pub annotations: BTreeMap<String, String>,
    pub data: Option<String>,
    pub platform: Option<Platform>,
}

An OCI content descriptor.

Descriptors are used to reference content by digest, and include the media type and size for validation.

Fields

media_type: MediaType

The media type of the referenced content.

digest: Digest

The digest of the referenced content.

size: u64

The size in bytes of the referenced content.

urls: Vec<String>

Optional URLs for downloading the content (OCI extension).

annotations: BTreeMap<String, String>

Optional annotations (uses BTreeMap for deterministic serialization).

data: Option<String>

Optional embedded data (base64-encoded, OCI extension).

platform: Option<Platform>

Optional platform specification (used in index manifests).

Implementations

impl Descriptor

pub fn new(media_type: MediaType, digest: Digest, size: u64) -> Self

Creates a new descriptor with the given media type, digest, and size.

pub fn with_annotation( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

Adds an annotation to the descriptor.

pub fn with_url(self, url: impl Into<String>) -> Self

Adds a URL for content download.

pub fn with_platform(self, platform: Platform) -> Self

Sets the platform for the descriptor.

Trait Implementations

impl Clone for Descriptor

fn clone(&self) -> Descriptor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Descriptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Descriptor

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Descriptor

fn eq(&self, other: &Descriptor) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Descriptor

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Descriptor

impl StructuralPartialEq for Descriptor