Enum WriteStorage

pub enum WriteStorage {
    Public(WriteMtime, SystemTime),
    Current(WriteMtime),
    Meta,
}

Variants

Public(WriteMtime, SystemTime)

The copy of data which is maintained to be equal to the others’ public storages.

See WriteFn and Options::write for more details on the data.

Current(WriteMtime)

The copy of data the user writes to.

The WriteMtime signals if we should update the mtime.

Meta

Storage of metadata objects.

Implementations

impl WriteStorage

pub fn current() -> Self

pub fn current_without_update() -> Self

pub fn to_storage(&self) -> Storage

impl WriteStorage

pub async fn update_metadata<MtimeFuture: Future<Output = Option<SystemTime>>>( &self, metadata: &Mutex<Metadata>, offline_metadata: &Mutex<Metadata>, resource: String, data_len: usize, mtime: impl FnOnce(Storage, String) -> MtimeFuture, ) -> Result<(), ()>

Update the metadata and offline_metadata according to what storage you’re writing to.

Errors

Returns an error if self is WriteStorage::Current with WriteMtime::LookUpCurrent and mtime returns None (the resource doesn’t exist).

Trait Implementations

impl Clone for WriteStorage

fn clone(&self) -> WriteStorage

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WriteStorage

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

Formats the value using the given formatter.

impl PartialEq for WriteStorage

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for WriteStorage

impl Eq for WriteStorage

impl StructuralPartialEq for WriteStorage