Struct ContentRef 

pub struct ContentRef {
    pub kind: ContentRefKind,
    pub content_id: ContentId,
    pub size_bytes: u64,
    pub storage_checksum: StorageChecksum,
    pub whole_file_sha256: Option<String>,
}

Pointer to one immutable content object.

content_id is identity — which object — and the checksums are evidence about its bytes. Separating the two is what lets the final object key exist before the first byte is read.

A ContentRef is safe to publish only after the referenced bytes are durable in the namespace’s content store.

Fields

kind: ContentRefKind

Content strategy used by the referenced object.

content_id: ContentId

Immutable identity of the referenced object.

size_bytes: u64

Complete byte length of the referenced content.

storage_checksum: StorageChecksum

Mandatory checksum over the complete object, used to verify the stored bytes against this reference without downloading them.

whole_file_sha256: Option<String>

SHA-256 over the complete payload, lowercase hex, when a trusted party computed it.

Present means the LoonFS write path hashed the whole stream itself, or a provider validated a signed whole-object SHA-256 on the write. There are no client-claimed digests: absent means nobody trustworthy hashed these bytes, never “the client did not tell us”.

Implementations

impl ContentRef

pub fn blob_v1(content_id: ContentId, bytes: &[u8]) -> Self

Builds a reference to a freshly minted content object holding these bytes.

Every caller of this constructor moves the bytes through the LoonFS write path, so the whole-file SHA-256 is trusted by construction.

pub fn blob_v1_streamed( content_id: ContentId, size_bytes: u64, digest: Sha256, ) -> Self

Builds a reference from a digest folded over the payload as it was written, for a write that never held the whole payload at once.

Taking the digest itself rather than a checksum value is what keeps the provenance rule structural: the only way to reach this constructor is to have hashed the bytes here, on the LoonFS write path, which is exactly what whole_file_sha256 claims.

pub fn validate(&self) -> Result<(), ContentRefValidationError>

Reports whether the reference is well formed enough to publish.

This is a shape check on the reference itself; proving that the object exists and matches is the storage layer’s job.

Trait Implementations

impl Clone for ContentRef

fn clone(&self) -> ContentRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContentRef

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ContentRef

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ContentRef

impl Hash for ContentRef

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ContentRef

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ContentRef

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ContentRef