Struct HotPath 

#[non_exhaustive]
pub struct HotPath {
    pub id: String,
    pub file: String,
    pub function: String,
    pub line: u32,
    pub end_line: u32,
    pub invocations: u64,
    pub percentile: u8,
    pub identity: Option<FunctionIdentity>,
}

A function the sidecar identified as a hot path in the current dump.

Marked #[non_exhaustive] in 0.6.0: downstream Rust consumers must stop using struct-literal construction. The wire shape is unchanged.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

id: String

Deterministic content hash of shape fallow:hot:<hash>. See hot_path_id for the canonical helper. Continues to ship through 0.6 alongside HotPath::identity.

file: String

Path to the source file, relative to Request::project_root.

function: String

Function name as reported by the static analyzer.

line: u32

1-indexed line the function starts on.

end_line: u32

1-indexed line the function ends on (inclusive). Mirrors StaticFunction::end_line from the request envelope so consumers can match a hot path against a PR diff at line granularity, not just file granularity. Older 0.4-shape sidecars omit this field; readers that receive 0 MUST treat the hot path as a single-line range (line..=line) rather than a span.

invocations: u64

Raw invocation count from the V8 dump.

percentile: u8

Percentile rank of this function’s invocation count over the invocation distribution of the current response’s hot paths. 100 means the busiest function, 0 the quietest that still qualified.

identity: Option<FunctionIdentity>

Canonical function identity introduced in 0.6.0. Optional for forward-compat with 0.5-shape sidecars.

Trait Implementations

impl Clone for HotPath

fn clone(&self) -> HotPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HotPath

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HotPath

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for HotPath

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

where __S: Serializer,

Serialize this value into the given Serde serializer.