Struct RepositoryDescriptor 

pub struct RepositoryDescriptor { /* private fields */ }

The versioned capability descriptor a durable adapter publishes.

Negotiation reads this descriptor before a launch does any durable work, so a requirement the deployed adapter does not declare is rejected up front rather than discovered part-way through an execution. The descriptor is the adapter’s own claim about the deployment it is connected to; it is not derived from the compiled plan and never weakens a declared guarantee.

descriptor_version versions the shape of this declaration. It is distinct from schema_version, which is the durable metadata schema the adapter is connected to: a runtime can understand a descriptor whose schema it refuses.

Implementations

impl RepositoryDescriptor

pub const CURRENT_VERSION: u32 = 1

The descriptor shape this runtime publishes and understands.

pub fn new( schema_version: u32, capabilities: impl IntoIterator<Item = RepositoryCapability>, ) -> RepositoryDescriptor

Declares the capabilities an adapter connected to schema_version provides.

A capability that is absent is undeclared, which negotiation treats as unavailable. Declaring nothing is the conservative claim, not a permissive one.

pub const fn descriptor_version(&self) -> u32

Returns the version of this descriptor’s shape.

pub const fn schema_version(&self) -> u32

Returns the durable metadata schema version the adapter is connected to.

pub fn declares(&self, capability: RepositoryCapability) -> bool

Reports whether the adapter declared capability.

pub fn capabilities(&self) -> impl ExactSizeIterator

Lists the declared capabilities in a stable order.

pub fn require( &self, capability: RepositoryCapability, ) -> Result<(), RepositoryError>

Requires capability, failing with a typed rejection when undeclared.

Errors

Returns RepositoryError::UnsupportedCapability naming the requirement. The requirement is never silently downgraded to a weaker guarantee.

Trait Implementations

impl Clone for RepositoryDescriptor

fn clone(&self) -> RepositoryDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RepositoryDescriptor

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

Formats the value using the given formatter.

impl Eq for RepositoryDescriptor

impl PartialEq for RepositoryDescriptor

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RepositoryDescriptor