Enum Role

pub enum Role {
    Action,
    Selector,
    Subflow,
    Task,
    Sequence,
    Listener,
}

Defines the behavior of the activity in the workflow.

NOTE: Activities with the subflow role are only permitted in module workflows. Subflows are not supported within function workflows.

Variants

Action

The default role; performs a specific task.

Selector

Contains child activities and uses an eligibility handler to determine which child activities to execute. This enables the ability to have a dynamic and reactive execution pipeline.

Subflow

Creates a new task context and asynchronously processes its workflow sub-graph on a new thread within the workflow machine. The subflow executes asynchronously from the requestor, allowing the original thread to return immediately. Within this context, multiple task actions can be enqueued, enabling extensive parallel processing. After completing its workflow sub-graph, it enters a stall state, waiting for all its asynchronous task actions to complete.

Task

Asynchronously processes the workflow graph on a new thread within the workflow machine. Task activities enable the pipeline to execute asynchronously from its requestor. Task activities require a task context to be present; if no task context exists, they execute immediately in the current thread.

Sequence

Listener

Trait Implementations

impl Debug for Role

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

Formats the value using the given formatter.

impl Default for Role

fn default() -> Role

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Role

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Role

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

where __S: Serializer,

Serialize this value into the given Serde serializer.