Struct NullJournal

pub struct NullJournal { /* private fields */ }

The null journal sends all the records into the abyss

Trait Implementations

impl Debug for NullJournal

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

Formats the value using the given formatter.

impl Default for NullJournal

fn default() -> NullJournal

Returns the “default value” for a type.

impl Journal for NullJournal

fn split( self, ) -> (Box<dyn WritableJournal + Send + Sync>, Box<dyn ReadableJournal + Send + Sync>)

Splits the journal into a read and write side

impl ReadableJournal for NullJournal

fn read(&self) -> Result<Option<LogReadResult<'_>>, Error>

Returns a stream of snapshot objects that the runtime will use to restore the state of a WASM process to a previous moment in time

fn as_restarted(&self) -> Result<Box<dyn ReadableJournal + Send + Sync>, Error>

Resets the journal so that reads will start from the beginning again

impl WritableJournal for NullJournal

fn write<'a>(&'a self, entry: JournalEntry<'a>) -> Result<LogWriteResult, Error>

Takes in a stream of snapshot log entries and saves them so that they may be restored at a later moment

fn flush(&self) -> Result<(), Error>

Flushes the data to disk or network

fn commit(&self) -> Result<usize, Error>

Commits the transaction Returns the number of events committed

fn rollback(&self) -> Result<usize, Error>

Rolls back the transaction and aborts its changes Returns the number of events rolled back