Struct CapId 

pub struct CapId(pub [u8; 16]);

An unforgeable capability identifier.

Tuple Fields

0: [u8; 16]

Implementations

impl CapId

pub fn derive(secret: &[u8; 32], serial: u64, parent: Option<&CapId>) -> CapId

Derive an id from the kernel secret, serial and parent.

Deterministic for a given kernel (which makes tests and replays stable), unpredictable to a peer without the secret.

pub fn hex(self) -> String

Hex form for logs and errors.

This is the raw capability id and is authority: possession of it is enough to call the object while the kernel lives. Prefer CapId::correlation_id in telemetry; hex is for an explicit, deliberate transfer (the peer CLI prints it so a caller can use it).

pub fn correlation_id(self) -> String

A non-reversible correlation id for logs and events.

Logs can correlate two events that mention the same capability without carrying the authority itself.

Trait Implementations

impl Clone for CapId

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CapId

impl Debug for CapId

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

Formats the value using the given formatter.

impl Display for CapId

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

Formats the value using the given formatter.

impl Eq for CapId

impl Hash for CapId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CapId

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for CapId

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for CapId

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for CapId