Struct RecordContent 

pub struct RecordContent { /* private fields */ }

A record’s content store: the store a host lent the app, with content the record references travelling on the record’s route.

Implementations

impl RecordContent

pub fn store(local: ContentStore, lane: Arc<ContentLane>) -> ContentStore

local, joined to the route lane reaches.

Trait Implementations

impl ContentBackend for RecordContent

fn put(&self, reader: &mut dyn Read, mime: &str) -> Result<Stored, ContentError>

Store everything reader yields, returning its address. Storing content already present is a no-op that succeeds. mime is advisory (a backend may index or serve by it).

fn open(&self, hash: &str) -> Result<Option<Box<dyn Read + Send>>, ContentError>

A streaming, verifying read of the content at hash, or None when it is not here.

fn has(&self, hash: &str) -> bool

Whether the content at hash is here and intact.

fn state(&self, hash: &str) -> ContentState

Where the content at hash has got to. A backend that can fetch from elsewhere reports [ContentState::Pending] while it does, and may start fetching when asked.

fn shared(&self) -> bool

Whether content stored here reaches beyond this device’s own copy: the device content store serves it to the app’s other devices and collaborators. A document may then refer to content by address alone; with a store that is not shared, a collaborator would be left holding an address nothing can resolve.

fn collect_unreferenced( &self, live: &BTreeSet<String>, ) -> Result<Collected, ContentError>

Remove every item whose address is not in live, which must be complete: the caller asserts nothing outside it is referenced by anything it is responsible for.