public class PollableSourceRunner extends SourceRunner
An implementation of SourceRunner that can drive a
PollableSource.
A PollableSourceRunner wraps a PollableSource in the required
run loop in order for it to operate. Internally, metrics and counters are
kept such that a source that returns a PollableSource.Status of
BACKOFF causes the run loop to do exactly that. There's a maximum
backoff period of 500ms. A source that returns READY is immediately
invoked. Note that BACKOFF is merely a hint to the runner; it need
not be strictly adhered to.
| Modifier and Type | Class and Description |
|---|---|
static class |
PollableSourceRunner.PollingRunner |
| Constructor and Description |
|---|
PollableSourceRunner() |
| Modifier and Type | Method and Description |
|---|---|
LifecycleState |
getLifecycleState()
Return the current state of the service or component.
|
void |
start()
Starts a service or component.
|
void |
stop()
Stops a service or component.
|
String |
toString() |
forSource, getSource, setSourcepublic void start()
LifecycleAwareStarts a service or component.
Implementations should determine the result of any start logic and effect
the return value of LifecycleAware.getLifecycleState() accordingly.
public void stop()
LifecycleAwareStops a service or component.
Implementations should determine the result of any stop logic and effect
the return value of LifecycleAware.getLifecycleState() accordingly.
public LifecycleState getLifecycleState()
LifecycleAwareReturn the current state of the service or component.
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