Struct RuntimeReadiness 

pub struct RuntimeReadiness {
    pub stopping: bool,
    pub snapshots_ready: bool,
    pub background_healthy: bool,
    pub accounting_healthy: bool,
    pub eligible_accounts: usize,
    pub unfundable_accounts: usize,
    pub unmanaged_accounts: usize,
    pub unresolved_principals: u64,
    /* private fields */
}

Whether this instance can admit work now, and which condition withdrew it when it cannot (INVARIANTS.md 10). From RuntimeHandle::readiness.

is_ready is the probe’s answer; the fields are its inputs, for diagnosis.

Fields

stopping: bool

Shutdown has been requested, or the runtime owner was dropped. Readiness is withdrawn for good.

snapshots_ready: bool

The snapshot task is alive and ready, and current resolutions meet the tracking rule: with TrackedPrincipals::Fixed every tracked principal is resolved; with TrackedPrincipals::All at least one is, or none is tracked.

background_healthy: bool

The supervisor and snapshot task are alive, no background failure has been recorded, no account is faulted, and every eligible account has a healthy running or lingering manager.

accounting_healthy: bool

The usage writer is open, has recorded no lost or rejected events, and its queue is below capacity. A sticky lost or rejected keeps this false for the rest of the process’s life.

eligible_accounts: usize

Accounts with at least one active, unexpired snapshot.

unfundable_accounts: usize

Eligible accounts that cannot fund work now: no usable lease with units remaining and no elastic overage headroom. With Fixed tracking any such account withdraws readiness; with All, readiness needs only some eligible account to be fundable.

unmanaged_accounts: usize

Eligible accounts without a healthy running or lingering lease manager: starting, backing off after a crash, retiring or faulted. Nonzero withdraws readiness through background_healthy.

unresolved_principals: u64

Tracked principals with no currently valid resolution (neither an unexpired snapshot nor an unexpired negative entry).

Implementations

impl RuntimeReadiness

pub fn is_ready(&self) -> bool

True only when the runtime is not stopping, snapshots are ready, background tasks and accounting are healthy, and the funding rule holds: with no account holding a published snapshot, trivially; with All tracking, some eligible account is fundable; with Fixed, at least one account is eligible and every eligible account is fundable.

Trait Implementations

impl Clone for RuntimeReadiness

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RuntimeReadiness

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

Formats the value using the given formatter.