Observability

Language: 中文

Event Model

SupervisorEvent describes one lifecycle fact. It contains When, Where, What, sequence, and correlation identifier.

When records wall-clock time, monotonic time, uptime, generation, and attempt. Where records supervisor path, child identifier, parent identifier, and task name. What records state transition, policy decision, health state, exit reason, or control command.

Pipeline Outputs

The observability pipeline publishes the same lifecycle fact as these signals:

• SupervisorEvent.
• Structured log.
• Tracing span and tracing event.
• Metrics.
• Audit event.
• Event journal entry.
• Test recorder entry.

Metric Labels

Metric labels must stay low-cardinality. Acceptable labels include supervisor path, child identifier, state, decision, and failure category. Full error text, user input, and unbounded dynamic values should not become labels.

Diagnostic Replay

The event journal stores a fixed number of recent events. RunSummary is built from the event journal, current state, and policy decisions so operators can explain meltdown, shutdown timeout, or parent escalation.