Struct CreateStepInput 

pub struct CreateStepInput {
    pub id: Option<Uuid>,
    pub request_id: Option<RequestId>,
    pub prev_step_id: Option<StepId>,
    pub parent_step_id: Option<StepId>,
    pub step_kind: StepKind,
    pub step_sequence: i64,
    pub request_payload: Value,
}

Input to ResponseStepStore::create_step.

step_sequence is monotonic per chain (head step) across the whole response tree. Callers (the orchestration loop) are responsible for picking the next sequence value.

Idempotency under crash recovery is the caller’s responsibility: walk the existing chain via ResponseStepStore::list_chain and only emit successors that aren’t already present. There is no database-side unique constraint on (parent_step_id, prev_step_id, step_kind) — branching is intrinsic to the data model (a model_call returning multiple tool_calls emits sibling rows with that exact tuple identical), so any uniqueness on those columns rejects ordinary parallel tool dispatch.

Fields

id: Option<Uuid>

Optional pre-generated step UUID. When Some, becomes the step’s primary key — useful when the caller needs to reference the id before the row is committed (e.g., emitting an SSE event with the step id while the row is still being inserted).

request_id: Option<RequestId>

FK to requests.id for the upstream HTTP fire this step represents. None on tool_call steps.

prev_step_id: Option<StepId>

parent_step_id: Option<StepId>

step_kind: StepKind

step_sequence: i64

request_payload: Value

Trait Implementations

impl Clone for CreateStepInput

fn clone(&self) -> CreateStepInput

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CreateStepInput

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

Formats the value using the given formatter.