public abstract class TriggerBase extends Object implements AutoScaling.Trigger
AutoScaling.Trigger
implementations.
It handles state snapshot / restore in ZK.Modifier and Type | Field and Description |
---|---|
protected Map<String,Object> |
lastState |
protected SolrZkClient |
zkClient |
Modifier | Constructor and Description |
---|---|
protected |
TriggerBase(SolrZkClient zkClient) |
Modifier and Type | Method and Description |
---|---|
protected abstract Map<String,Object> |
getState()
Prepare and return internal state of this trigger in a format suitable for persisting in ZK.
|
void |
restoreState()
Restore internal state of this trigger from ZooKeeper.
|
void |
saveState()
Save internal state of this trigger in ZooKeeper.
|
protected abstract void |
setState(Map<String,Object> state)
Restore internal state of this trigger from properties retrieved from ZK.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getActions, getEventType, getName, getProcessor, getProperties, getWaitForSecond, init, isClosed, isEnabled, restoreState, setProcessor
protected SolrZkClient zkClient
protected TriggerBase(SolrZkClient zkClient)
protected abstract Map<String,Object> getState()
Utils.toJSON(Object)
.protected abstract void setState(Map<String,Object> state)
state
- never null but may be empty.public void saveState()
AutoScaling.Trigger
saveState
in interface AutoScaling.Trigger
public void restoreState()
AutoScaling.Trigger
restoreState
in interface AutoScaling.Trigger
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