Struct JsonlTraceWriter 

pub struct JsonlTraceWriter { /* private fields */ }

JSON Lines trace writer — emits to stderr or a file.

Implementations

impl JsonlTraceWriter

pub fn stderr() -> Self

Create a trace writer that writes to stderr.

pub fn file(path: &Path) -> Result<Self>

Create a trace writer that writes to a file.

Trait Implementations

impl TraceSink for JsonlTraceWriter

fn emit_runtime_info( &mut self, runtime_version: &str, wasmtime_version: &str, timestamp: &str, )

fn emit_invoke( &mut self, trace_id: &str, session_id: &str, step: u64, graph_id: &str, graph_version: &str, brick_id: &str, brick_version: &str, bundle_digest: &str, node_id: &str, envelope_bytes: &[u8], trigger_source_node_id: &str, trigger_source_step: u64, trigger_edge_id: &str, trigger_routing_reason: &str, result: &BrickResult, result_bytes: Option<&[u8]>, latency_ms: f64, timestamp: &str, )

fn enabled(&self) -> bool

Returns false to skip all trace work (timestamp allocation, serialization). NullTrace returns false; real writers return true (default).