Struct Frame 

pub struct Frame {
    pub from: i64,
    pub to: i64,
    pub entities: Vec<u64>,
    pub traces: Vec<[u8; 16]>,
    pub truncated: bool,
}

A bounded region of telemetry.

No spans member, unlike section 7.3’s sketch: the one question it was for — “this span and its children” — is what a trace_id query already answers, and a set nothing reads is a set nothing keeps correct.

Fields

from: i64

to: i64

entities: Vec<u64>

resources.key values (section 7.2). Never contains crate::identity::NO_IDENTITY: treating “no stable identity” as an identity would merge every resource an exporter failed to describe into one entity.

traces: Vec<[u8; 16]>

truncated: bool

Something was dropped on the way here. Carried on the frame rather than returned beside it so it survives a walk: three expansions later the caller still knows the answer is a sample, which is the difference between a wide investigation and a wrong one.

Implementations

impl Frame

fn add_trace(&mut self, id: &[u8])

fn add_entity(&mut self, key: u64)

pub fn write_json(&self, j: &mut Json, names: &HashMap<u64, String>)

The frame as a response body. names labels the entity keys — see names_of; an empty map renders every one as unknown, which is what a caller that did not ask for labels gets.

Trait Implementations

impl Clone for Frame

fn clone(&self) -> Frame

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Frame

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

Formats the value using the given formatter.

impl Default for Frame

fn default() -> Frame

Returns the “default value” for a type.

impl PartialEq for Frame

fn eq(&self, other: &Frame) -> 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 StructuralPartialEq for Frame