Struct StreamFacts 

pub struct StreamFacts {
    pub requests: Vec<EconomicsRequest>,
    pub models: Vec<EconomicsModelTotal>,
    pub reported_cost_microusd: Option<u64>,
    pub tools: BTreeMap<String, u64>,
    pub orientation: EconomicsOrientation,
    pub turns: Option<u64>,
    pub ended: String,
    pub is_error: bool,
    pub tools_offered: Vec<String>,
    pub mcp_servers: Vec<String>,
}

What read_stream recovers from one session’s transcript: the numeric and structural parts of an EconomicsSession. The caller adds what the transcript does not know (index, prompt digest, wall clock).

use majordomus_cli::economics::usage::{read_stream, StreamFacts};
let line = concat!(
    r#"{"type":"assistant","message":{"id":"m1","model":"m","content":[],"#,
    r#""usage":{"input_tokens":4,"output_tokens":1}}}"#,
);
let facts: StreamFacts = read_stream(line).unwrap();
assert_eq!(facts.requests[0].input_tokens, 4);
assert_eq!(facts.ended, "no_result", "no closing `result` event: the session never finished");
assert!(facts.is_error);

Fields

requests: Vec<EconomicsRequest>

Requests, deduplicated by message id, in first-seen order. An event that carries no message id is a request of its own: nothing says it repeats another.

models: Vec<EconomicsModelTotal>

The harness’s per-model totals from its closing result event.

reported_cost_microusd: Option<u64>

The harness’s total_cost_usd, in millionths of a dollar.

tools: BTreeMap<String, u64>

Tool calls by name.

orientation: EconomicsOrientation

Orientation before the first edit.

turns: Option<u64>

Turns.

ended: String

How the session ended.

is_error: bool

Whether the harness reported an error.

tools_offered: Vec<String>

Tools the harness offered, from its init event.

mcp_servers: Vec<String>

MCP servers the harness connected, from its init event.

Trait Implementations

impl Clone for StreamFacts

fn clone(&self) -> StreamFacts

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamFacts

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

Formats the value using the given formatter.

impl Default for StreamFacts

fn default() -> StreamFacts

Returns the “default value” for a type.

impl PartialEq for StreamFacts

fn eq(&self, other: &StreamFacts) -> 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 StreamFacts