Struct SessionBudget 

pub struct SessionBudget {
    pub session_id: u64,
    pub budgets: HashMap<ResourceType, Budget>,
}

Per-session budget container. Holds one Budget per ResourceType.

Fields

session_id: u64

Unique identifier for the owning session.

budgets: HashMap<ResourceType, Budget>

Per-resource budgets.

Implementations

impl SessionBudget

pub fn new(session_id: u64, limits: Vec<(ResourceType, u64)>) -> Self

Create a new session budget with pre-defined limits.

Resources not listed in limits will be auto-created on first use with a limit of u64::MAX.

pub fn consume( &mut self, resource: ResourceType, amount: u64, ) -> Result<(), String>

Consume amount units of resource.

Errors

Returns Err("budget exceeded") if the consumption would push used past limit. The budget is not modified in that case.

If no budget exists for resource, one is auto-created with limit = u64::MAX before the consumption is applied.

pub fn remaining(&self, resource: ResourceType) -> u64

Remaining units for resource.

Returns u64::MAX when the resource has not been registered (no limit has been set — it is effectively unlimited).

pub fn is_any_exhausted(&self) -> bool

Whether any registered resource is exhausted.

Trait Implementations

impl Clone for SessionBudget

fn clone(&self) -> SessionBudget

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SessionBudget

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

Formats the value using the given formatter.