pingable

type Check struct {
	// Name of this component.
	Name string
	// The longest time that Ping can take. If it doesn't return in that much time, that's
	// considered a deadlock and the deadlock detector may take actions to recover, like
	// killing the process.
	Timeout time.Duration
	// Perform the check. The typical implementation will just be Lock() and then Unlock()
	// on a mutex, returning nil. Ping can also return more Pingables for sub-components
	// that will be checked independently. These should form a tree and not lead to cycles.
	Ping func() []Pingable

	// Metrics recording:
	// Timer id within DeadlockDetectorScope (or zero for no metrics)
	MetricsName string
}

type Pingable interface {
	GetPingChecks() []Check
}