Struct PolicyFingerprint 

pub struct PolicyFingerprint(/* private fields */);

A deterministic digest of a policy’s identity, scope, and configuration.

Storage backends include this value in counter keys. Consequently, changing any storage-relevant policy configuration starts an independent counter instead of reinterpreting existing state.

This storage-key component deliberately does not implement Serde traits.

Implementations

impl PolicyFingerprint

pub const fn from_digest(digest: [u8; 32]) -> Self

Constructs a fingerprint from an already domain-separated digest.

This is intended for third-party RateLimitPolicy implementations. The digest must cover the algorithm identity and every storage-relevant policy field. Deployment-only fields such as QuotaMode should be excluded so a mode change reuses warmed state.

Built-in policies derive their fingerprints automatically.

pub const fn as_bytes(&self) -> &[u8; 32]

Returns the 32-byte SHA-256 fingerprint.

pub const fn into_bytes(self) -> [u8; 32]

Consumes the value and returns the 32-byte SHA-256 fingerprint.

Trait Implementations

impl Clone for PolicyFingerprint

fn clone(&self) -> PolicyFingerprint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PolicyFingerprint

impl Debug for PolicyFingerprint

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

Formats the value using the given formatter.

impl Display for PolicyFingerprint

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

Formats the value using the given formatter.

impl Eq for PolicyFingerprint

impl Hash for PolicyFingerprint

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 PolicyFingerprint

fn cmp(&self, other: &PolicyFingerprint) -> 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.

impl PartialEq for PolicyFingerprint

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for PolicyFingerprint

fn partial_cmp(&self, other: &PolicyFingerprint) -> 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 PolicyFingerprint