Struct InMemoryBudgetRegistry 

pub struct InMemoryBudgetRegistry { /* private fields */ }

Pure in-memory BudgetRegistry backed by a BTreeMap.

This implementation is no_std friendly: it keeps a deterministic map keyed by parent capability id and never reaches for clocks, locks, or allocators outside alloc. Hosted callers that need shared mutable access across threads should wrap it in their own Mutex / RwLock.

Implementations

impl InMemoryBudgetRegistry

pub fn new() -> Self

Build an empty registry.

pub fn split(&self, parent_token_id: &str) -> Option<&BudgetSplit>

Borrow the live split for parent_token_id, if any. Useful for tests and operator dashboards that want to inspect headroom.

Trait Implementations

impl BudgetRegistry for InMemoryBudgetRegistry

fn register_parent( &mut self, parent_token_id: String, parent_share_bps: u16, ) -> Result<(), BudgetSplitError>

Register a parent token’s share so subsequent delegations can be admitted against it. Re-registering the same parent with the same share is idempotent. Re-registering with a different share is a hard failure: the caller probably fed two distinct tokens with the same id, which is a delegation-graph bug.

fn try_admit_child( &mut self, parent_token_id: &str, child_token_id: String, share_bps: u16, ) -> Result<(), BudgetSplitError>

Try to admit a child token under the given parent.

fn verify_child_admission( &mut self, parent_token_id: &str, child_token_id: String, share_bps: u16, ) -> Result<(), BudgetSplitError>

Check whether a child token would admit under the given parent WITHOUT acquiring a holder lease.

fn release_child( &mut self, parent_token_id: &str, child_token_id: &str, expected_share_bps: u16, ) -> Result<(), BudgetSplitError>

Release a previously admitted child token under the given parent.

fn evict_parent(&mut self, parent_token_id: &str)

Drop the parent’s split from the registry. Idempotent; calling evict_parent on an unregistered parent is a no-op so revocation races do not abort verification.

impl Clone for InMemoryBudgetRegistry

fn clone(&self) -> InMemoryBudgetRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InMemoryBudgetRegistry

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

Formats the value using the given formatter.

impl Default for InMemoryBudgetRegistry

fn default() -> InMemoryBudgetRegistry

Returns the “default value” for a type.