Enum Since 

pub enum Since {
    Start,
    Head,
    Cursor(String),
}

Where a GET /changes request starts (RFC-ACDP-0018 §5.1).

Variants

Start

The oldest retained entry (since absent): replay history.

Head

The current head (since=head): no entries, just the head cursor. Where a new consumer, or one resyncing after cursor_expired, starts.

Cursor(String)

After a cursor from an earlier response.

Implementations

impl Since

pub fn as_query(&self) -> Option<&str>

The since query value, or None to omit the parameter.

Trait Implementations

impl Clone for Since

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 Since

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

Formats the value using the given formatter.

impl Eq for Since

impl Hash for Since

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Since

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Since