Struct SubScriptFrame 

pub struct SubScriptFrame {
    pub script_name: String,
    pub parent_task: String,
    pub parent_node_id: Option<u64>,
    pub attempt: Option<u8>,
}

One ancestor frame on a flattened EngineEvent::SubScript payload.

Issue #993: EngineEvent::SubScript used to wrap a nested Box<EngineEvent> per call-stack level, so a depth-N chain produced an event whose serialized payload was O(N) deep — a 10-level art_123_2 fanout could blow a single SSE frame past a megabyte and choke reconnect logic. The new wire shape carries the leaf event flat and names ancestors via an ordered parent_path of these frames so SDKs rebuild the tree off the side without paying the recursion cost on every envelope.

Frame ordering: parent_path[0] is the outermost ancestor (direct child of the top-level workflow); parent_path[len-1] is the immediate parent of the currently-emitting sub-script (whose own script_name lives on the EngineEvent::SubScript fields, NOT inside parent_path).

Fields

script_name: String

Called script’s name as it lives in the parent’s project. Matches the script_name an outer SubScript envelope would have carried in the legacy recursive shape.

parent_task: String

Variable name on the parent side that received the call result — same semantics as the top-level EngineEvent::SubScript::parent_task.

parent_node_id: Option<u64>

Compiler-stable id of the parent’s call(…) node, when known. Lets consumers correlate retries of the same call site (issue #845) across the ancestor chain.

attempt: Option<u8>

1-indexed attempt counter for author-raise retries at the same call site. Matches EngineEvent::SubScript::attempt semantics.

Trait Implementations

impl Clone for SubScriptFrame

fn clone(&self) -> SubScriptFrame

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SubScriptFrame

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SubScriptFrame

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for SubScriptFrame

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for SubScriptFrame

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for SubScriptFrame

impl StructuralPartialEq for SubScriptFrame