Struct MailCardCache 

pub struct MailCardCache { /* private fields */ }

Sender-side pins: the greatest-nonce card seen per (owner, mailbox), including closed or expired cards. Save snapshot() after every observation, even one that returns an error for an unusable new pin.

Implementations

impl MailCardCache

pub fn new() -> Self

pub fn observe_historical( &mut self, value: &Value, owner: &AgentId, now: i64, ) -> Result<MailboxCard>

Pin an authenticated card, including a closed or expired one. This is appropriate for card reads; check usability before encrypting.

pub fn observe( &mut self, value: &Value, owner: &AgentId, now: i64, ) -> Result<MailboxCard>

Pin a card, then require that it is usable for new encryption.

pub fn get(&self, owner: &AgentId, mailbox_id: &str) -> Option<&MailboxCard>

The pinned card of (owner, mailbox_id), if any.

pub fn prune(&mut self, now: i64) -> Result<()>

Drop pins old enough that every earlier card of the mailbox has expired.

pub fn seal( &mut self, message: &MessagePayload, card: &Value, signer: &AgentSigner, nonce: u64, now: i64, ) -> Result<Packet>

Pin, encrypt the immutable message, and sign a fresh packet.

pub fn snapshot(&self) -> Result<Value>

pub fn from_snapshot(value: &Value) -> Result<Self>

Trait Implementations

impl Clone for MailCardCache

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 MailCardCache

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

Formats the value using the given formatter.

impl Default for MailCardCache

fn default() -> Self

Returns the “default value” for a type.