Enum RoutedBatchEntry 

pub enum RoutedBatchEntry {
    Put(RoutedBatchItem),
    Delete {
        key: Vec<u8>,
        expected: Hash,
    },
}

One change in an atomic routed batch of puts and deletes (DUR-028 R3).

A delete names the value it retires by its logical hash, so a key that is absent or holds another value refuses the whole batch: the commit that replaces a checkpoint body removes exactly the body it read.

Variants

Put(RoutedBatchItem)

A conditional replacement, exactly as in DurableStore::apply_routed_batch.

Delete

Removal of key, whose current value hashes to expected.

Fields

key: Vec<u8>

The key on the route, as the puts beside it are keyed.

expected: Hash

The logical hash of the value being removed (haematite::tree::Hash::of its bytes).

Implementations

impl RoutedBatchEntry

pub fn key(&self) -> &[u8]

The key this entry writes or removes.

Trait Implementations

impl Clone for RoutedBatchEntry

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RoutedBatchEntry

A delete prints its key as the text every route key is, not as the byte list a derived Debug would print, beside the hash it guards on.

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

Formats the value using the given formatter.