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BookSnapshot

tycho_simulation::book

Struct BookSnapshot 

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pub struct BookSnapshot<A> {
    pub anchor: A,
    pub books: Arc<HashMap<String, Book>>,
}
Expand description

One provider’s complete set of books at one instant, so a pair absent from a snapshot is one the provider has stopped serving. The books are Arc’d so cloning the snapshot (e.g. out of a watch channel) never copies states.

This is the SnapshotFeed::Snapshot payload of every feed in this module, wrapped in an Option whose None means there is no servable snapshot: none received yet, or the last one withdrawn as stale (see max_snapshot_age on both feed configs).

A is what the snapshot is anchored to. Every feed in this module publishes BookSnapshot<ReceivedAt>; a feed whose snapshots belong to a block rather than to a moment publishes a block anchor instead, and the anchor type tells its consumers which.

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§anchor: A§books: Arc<HashMap<String, Book>>

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impl BookSnapshot<ReceivedAt>

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pub fn received_now(books: HashMap<String, Book>) -> Self

books as the complete set a feed received just now.

Trait Implementations§

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impl<A: Clone> Clone for BookSnapshot<A>

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<A: Debug> Debug for BookSnapshot<A>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<A> !RefUnwindSafe for BookSnapshot<A>

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impl<A> !UnwindSafe for BookSnapshot<A>

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impl<A> Freeze for BookSnapshot<A>
where A: Freeze,

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impl<A> Send for BookSnapshot<A>
where A: Send,

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impl<A> Sync for BookSnapshot<A>
where A: Sync,

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impl<A> Unpin for BookSnapshot<A>
where A: Unpin,

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impl<A> UnsafeUnpin for BookSnapshot<A>
where A: UnsafeUnpin,

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where T: 'static + ?Sized,

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