Struct AppendLedger 

pub struct AppendLedger { /* private fields */ }

Generic append-only ledger for platform events.

Ledger keys identify logical ledgers (e.g. "audit", "decision", "relationship", "incident", "reality"). Entries are opaque byte payloads whose schema is defined by the consumer (Caelum, Digicorp).

Maintains secondary indexes for O(N_key) and O(N_tenant) queries.

Implementations

impl AppendLedger

pub fn new() -> Self

Creates an empty ledger.

pub fn append(&mut self, entry: LedgerEntry)

Appends an entry to the ledger.

pub fn iter_for_key<'a>( &'a self, key: &str, ) -> impl Iterator<Item = &'a LedgerEntry>

Returns an iterator over all entries for the given ledger key.

pub fn iter_for_tenant( &self, tenant_id: TenantId, ) -> impl Iterator<Item = &LedgerEntry>

Returns an iterator over all entries for the given tenant.

pub fn entry_by_id(&self, entry_id: LedgerEntryId) -> Option<&LedgerEntry>

Returns the entry for the given identifier, if any.

pub fn len(&self) -> usize

Returns the total number of entries in the ledger.

pub fn is_empty(&self) -> bool

Returns true if the ledger contains no entries.

pub fn iter(&self) -> impl Iterator<Item = &LedgerEntry>

Returns an iterator over all entries, in insertion order.

Trait Implementations

impl Default for AppendLedger

fn default() -> AppendLedger

Returns the “default value” for a type.