Lifecycle And Monitor - Nullspace

Use Lifecycle for durable event history and webhooks. Use Monitor for live runtime observations while a client is connected.

Lifecycle

Method group	Use
`Lifecycle.list_events(...)`	List account-level lifecycle events.
`Lifecycle.list_machine_events(machine_id, ...)`	List events for one machine.
`Lifecycle.list_snapshot_events(snapshot_id, ...)`	List events for one snapshot.
`Lifecycle.stream(...)`	Stream lifecycle transitions.
`Lifecycle.create_webhook(...)`	Register a webhook endpoint.
`Lifecycle.list_webhooks`, `get_webhook`, `delete_webhook`	Manage webhook registrations.
`Lifecycle.list_webhook_deliveries(...)`	Inspect delivery attempts.

Monitor

Method	Use
`Monitor.subscribe(...)`	Subscribe to machine info, metrics, process, update, snapshot, and error callbacks.
`subscription.stop()`	Stop a live subscription.

from nullspace import Monitor

def on_metrics(metrics):
    print(metrics.cpu_percent, metrics.memory_bytes)

subscription = Monitor(machine.id).subscribe(on_metrics=on_metrics)
try:
    machine.commands.run("sleep 5", shell=True)
finally:
    subscription.stop()