Enum Canvas 

pub enum Canvas {
    Single(Signature),
    Chain(Vec<Canvas>),
    Group(Vec<Canvas>),
    Chord {
        group: Vec<Canvas>,
        callback: Box<Canvas>,
    },
}

A composable workflow description.

Variants

Single(Signature)

A single task invocation.

Chain(Vec<Canvas>)

Execute tasks sequentially; each task’s result is passed to the next.

Group(Vec<Canvas>)

Execute tasks in parallel.

Chord

A group with a callback that fires after all members complete.

Fields

group: Vec<Canvas>

callback: Box<Canvas>

Implementations

impl Canvas

pub async fn apply( &self, broker: &(dyn Broker + 'static), backend: &(dyn ResultBackend + 'static), ) -> Result<WorkflowHandle, KojinError>

Submit this workflow for execution.

• Single: enqueues immediately.
• Chain: enqueues first task with remaining steps stored in headers.
• Group: enqueues all members in parallel with group metadata.
• Chord: like Group but attaches a chord callback.

Trait Implementations

impl Clone for Canvas

fn clone(&self) -> Canvas

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Canvas

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Canvas

fn deserialize<__D>( __deserializer: __D, ) -> Result<Canvas, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Signature> for Canvas

fn from(sig: Signature) -> Canvas

Converts to this type from the input type.

impl Serialize for Canvas

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

where __S: Serializer,

Serialize this value into the given Serde serializer.