Struct DiagnosticDumpResponse 

#[non_exhaustive]
pub struct DiagnosticDumpResponse {
    pub recent_subprocesses: Vec<SubprocessRecord>,
    pub sessions: Vec<SessionSummary>,
    pub sim_health: String,
    pub supervisor_pid: Option<u32>,
    pub uptime_ms: u64,
    pub alive_cache: AliveCacheCounters,
    pub session_counters: SessionLifecycleCounters,
    pub metro_log_tail: Vec<String>,
    pub recent_flows: Vec<FlowAttemptRecord>,
    pub last_interactive_named_ids: Vec<String>,
}

POST /diagnostic/dump response body (v1.0.7 §D5, extended v1.0.11 §D1/§D4/§D5).

Snapshot of the runner’s runtime state: recent subprocess invocations, currently-open sessions, sim health state, supervisor pid, plus the always-emitted app-alive cache + cumulative session lifecycle counters that answer “is the observability instrumented?” as a numeric question, not a grep for a log line that may or may not survive a supervisor cycle.

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.

recent_subprocesses: Vec<SubprocessRecord>

Recent xcrun simctl invocations recorded by the runner’s subprocess ring buffer. Ordered oldest → newest, capped at 128.

sessions: Vec<SessionSummary>

Every session currently known to the runner (mirrors /session/list; embedded here for one-shot dump).

sim_health: String

Coarse sim-health classification at dump time.

supervisor_pid: Option<u32>

Pid of the supervisor sidecar, when spawned via smix runner up --supervise (v1.0.6 §D1).

uptime_ms: u64

Runner wall-clock uptime in milliseconds.

alive_cache: AliveCacheCounters

v1.0.11 §D1 — always-present. wired=false when the runner didn’t have an AppAliveCache wired at boot (opt-out) or predates this observability. When wired=true, the counter fields reflect an actual live cache — even all-zero is meaningful (“workload didn’t fire the re-probe path”).

session_counters: SessionLifecycleCounters

v1.0.11 §D4/§D5 — cumulative session lifecycle counters. Advance on every mutation, survive close, persisted alongside the v1.0.5 session-persistence file so smix runner cycle doesn’t wipe them.

metro_log_tail: Vec<String>

v1.0.14 Cluster B / §5 — trailing N lines from the external metro log the CLI was told to tail (via --metro-log <path> on smix run or smix diagnostic dump). Empty when the CLI was not given a log path OR when the file was unreadable at dump time. Default N is 200 lines; consumer overrides with --metro-log-tail-lines <N>. Purely additive — a pre-v1.0.14 consumer ignoring this field sees no behavior change.

recent_flows: Vec<FlowAttemptRecord>

v1.0.14 §6 — retry-attribution roll-up. Populated by smix run when it has driven at least one flow. Each entry carries per-attempt status + errorClass + any .ips generated so consumers can tell “flow X passed on retry 2 after retry 1 crashed” from “flow X passed on the first try”. Empty when no flow context available at dump time.

last_interactive_named_ids: Vec<String>

v1.0.19 — most-recent interactiveNamedIds sample observed across all launchApp completions since runner boot. Survives session teardown so post-batch triage can see WHICH ax-ids triggered reachedInteractive on the last observed launch, not just the count. Empty when no launch this run.

Per-session values (v1.0.18) remain on sessions[n].interactiveNamedIds but go with the session at teardown. This top-level field is the last-values-standing for post-mortem observation. Insight round-4 §Ask.

Trait Implementations

impl Clone for DiagnosticDumpResponse

fn clone(&self) -> DiagnosticDumpResponse

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DiagnosticDumpResponse

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

Formats the value using the given formatter.

impl Default for DiagnosticDumpResponse

fn default() -> DiagnosticDumpResponse

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DiagnosticDumpResponse

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for DiagnosticDumpResponse

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

where __S: Serializer,

Serialize this value into the given Serde serializer.