Struct Dynamic 

pub struct Dynamic { /* private fields */ }

Serves on-demand fetches of uncached (old) groups for a track, the group-level analogue of broadcast::Dynamic.

Most tracks never serve old content, so this capability lives on a dedicated handle rather than Producer: a relay creates one (via Producer::dynamic or Request::dynamic) to pull past groups from upstream. While at least one is alive the track will block a cache-miss Consumer::fetch_group waiting to be served; with none, an accepted track’s miss fails fast with Error::NotFound.

Implementations

impl Dynamic

pub fn name(&self) -> &str

The track’s name, unique within its broadcast.

pub async fn requested_group(&self) -> Result<GroupRequest>

Block until a consumer fetches a group that isn’t cached, returning a GroupRequest to serve via GroupRequest::accept.

A relay issues a wire FETCH first; an origin already has the group cached, so the fetch resolves without ever reaching here. Errors once the track is aborted.

pub fn poll_requested_group( &self, waiter: &Waiter, ) -> Poll<Result<GroupRequest>>

Poll counterpart to requested_group.

pub fn poll_unused(&self, waiter: &Waiter) -> Poll<()>

Poll for the track becoming unused (every consumer dropped).

Trait Implementations

impl Clone for Dynamic

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Drop for Dynamic

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.