Struct MetricEvent 

pub struct MetricEvent {

    pub ts: u64,
    pub tool: &'static str,
    pub duration_ms: u64,
    pub output_chars: usize,
    pub param_path_depth: usize,
    pub max_depth: Option<u32>,
    pub result: &'static str,
    pub error_type: Option<String>,
    pub error_subtype: Option<String>,
    pub session_id: Option<String>,
    pub seq: Option<u32>,
    pub cache_hit: Option<bool>,
    pub cache_tier: Option<&'static str>,
    pub cache_write_failure: Option<bool>,
    pub exit_code: Option<i32>,
    pub timed_out: bool,
    pub output_truncated: Option<bool>,
    pub chars_threshold_breach: bool,
    pub file_ext: Option<&'static str>,
    pub filter_applied: Option<String>,
    pub language: Option<String>,
}

A single metric event emitted by a tool invocation.

Fields

ts: u64

tool: &'static str

duration_ms: u64

output_chars: usize

param_path_depth: usize

max_depth: Option<u32>

result: &'static str

error_type: Option<String>

error_subtype: Option<String>

session_id: Option<String>

seq: Option<u32>

cache_hit: Option<bool>

cache_tier: Option<&'static str>

cache_write_failure: Option<bool>

Set to Some(true) when an L2 disk cache write fails (dir, tempfile, write, or rename). Drives the cache_write_failures_total OTEL counter.

exit_code: Option<i32>

timed_out: bool

output_truncated: Option<bool>

chars_threshold_breach: bool

True when output_chars > 30_000; fires for the top ~0.33% of exec_command calls (p99.7 of 27,981 observed calls). Early-warning signal for responses approaching the per-stream byte-cap threshold.

file_ext: Option<&'static str>

File extension of the analyzed path, lowercased. Some("rs") for known extensions, Some("other") for unrecognized extensions, None when the path has no extension. Only populated for analyze_file and analyze_module.

filter_applied: Option<String>

Name of the filter rule that matched and transformed exec_command output. None when no filter fired or for non-exec_command tools.

language: Option<String>

Human-readable programming language name derived from the file extension (e.g., Some("Rust") for .rs files). None when the path has no extension or the extension is not recognized. Only populated for analyze_file and analyze_module.

Trait Implementations

impl Clone for MetricEvent

fn clone(&self) -> MetricEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MetricEvent

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

Formats the value using the given formatter.

impl Default for MetricEvent

fn default() -> MetricEvent

Returns the “default value” for a type.

impl Deserialize<'static> for MetricEvent

where MetricEvent: Default,

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

where __D: Deserializer<'static>,

Deserialize this value from the given Serde deserializer.

impl Serialize for MetricEvent

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

where __S: Serializer,

Serialize this value into the given Serde serializer.