Struct ForkBasis 

pub struct ForkBasis {
    pub source_namespace_id: NamespaceId,
    pub source_manifest_object_id: ManifestObjectId,
    pub source_manifest_checksum: String,
    pub source_checkpoint_id: CheckpointId,
    pub fork_seq: ChangeSeq,
}

Where a fork target’s metadata basis lives before the target publishes its own manifest, and the permanent record of what it was forked from.

Present in every successor head of a fork target, absent in every head of a created namespace. The basis is head-authorized: a reader that resolves through it must verify the loaded manifest against both the namespace id and the checksum recorded here, and report corruption on any mismatch — there is no fallback (format spec, “Resolving the metadata basis”).

Fields

source_namespace_id: NamespaceId

Namespace whose durable tree owns the basis manifest and its tables.

source_manifest_object_id: ManifestObjectId

Immutable manifest the target starts from, under the source’s prefix.

source_manifest_checksum: String

Must equal payload_checksum in the referenced manifest envelope.

source_checkpoint_id: CheckpointId

Source checkpoint record pinning the basis for as long as the target lives.

fork_seq: ChangeSeq

Source sequence the target’s history begins at: its birth seq, and the floor below which the target never had WAL history of its own.

Trait Implementations

impl Clone for ForkBasis

fn clone(&self) -> ForkBasis

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForkBasis

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ForkBasis

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ForkBasis

impl PartialEq for ForkBasis

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ForkBasis

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 ForkBasis