Struct JoinRound 

pub struct JoinRound {
    pub round_key: String,
    pub branch_count: usize,
}

Identifies one round of a Join and the number of branches in that round.

Join::fork and Join::fork_with_round_key create the round. Pass the same value, unchanged, to every branch Step, to the join Step, and to the next round’s split Step when a loop resets the Join. Treat it as an opaque token: the application never computes the key or the count itself.

A JoinRound is persisted inside Step inputs as the JSON object {"roundKey": string, "branchCount": integer}. Every Dex SDK uses these field names, so a round created by one SDK decodes in another. Deserializing a negative branchCount fails.

See Join for a complete example.

Since 1.44.0.

Fields

round_key: String

The Channel-map instance that holds this round’s branch results.

Join::fork uses the split Step’s execution ID, such as RequestQuotes-2. Join::fork_with_round_key uses the caller’s key. Dex Web shows it as the instance key of the Join’s Channel map. It is never empty and never contains / when the SDK creates it.

branch_count: usize

The number of branches the round started, which is the number of branch builders passed to the fork.

Join::for_all_branches waits for this many results. It may be zero, in which case that condition completes immediately.

Trait Implementations

impl Clone for JoinRound

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 JoinRound

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JoinRound

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for JoinRound

impl PartialEq for JoinRound

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for JoinRound

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for JoinRound