Github user neykov commented on a diff in the pull request:
https://github.com/apache/brooklyn-server/pull/141#discussion_r64173066
--- Diff:
core/src/main/java/org/apache/brooklyn/enricher/stock/AbstractTransformer.java
---
@@ -59,27 +72,55 @@ public void setEntity(EntityLocal entity) {
super.setEntity(entity);
this.producer = getConfig(PRODUCER) == null ? entity:
getConfig(PRODUCER);
- this.sourceSensor = (Sensor<T>) getRequiredConfig(SOURCE_SENSOR);
+ this.sourceSensor = (Sensor<T>) getConfig(SOURCE_SENSOR);
Sensor<?> targetSensorSpecified = getConfig(TARGET_SENSOR);
+ List<? extends Sensor<?>> triggerSensorsSpecified =
getConfig(TRIGGER_SENSORS);
+ List<? extends Sensor<?>> triggerSensors = triggerSensorsSpecified
!= null ? triggerSensorsSpecified : ImmutableList.<Sensor<?>>of();
this.targetSensor = targetSensorSpecified!=null ? (Sensor<U>)
targetSensorSpecified : (Sensor<U>) this.sourceSensor;
- if (producer.equals(entity) && targetSensorSpecified==null) {
+ if (targetSensor == null) {
+ throw new IllegalArgumentException("Enricher
"+JavaClassNames.simpleClassName(this)+" has no "+TARGET_SENSOR.getName()+",
and it cannot be inferred as "+SOURCE_SENSOR.getName()+" is also not set");
+ }
+ if (sourceSensor == null && triggerSensors.isEmpty()) {
+ throw new IllegalArgumentException("Enricher
"+JavaClassNames.simpleClassName(this)+" has no "+SOURCE_SENSOR.getName()+" and
no "+TRIGGER_SENSORS.getName());
+ }
+ if (producer.equals(entity) && (targetSensor.equals(sourceSensor)
|| triggerSensors.contains(targetSensor))) {
// We cannot call getTransformation() here to log the
tranformation, as it will attempt
// to resolve the transformation, which will cause the entity
initialization thread to block
LOG.error("Refusing to add an enricher which reads and
publishes on the same sensor: "+
- producer+"."+sourceSensor+" (computing transformation with
"+JavaClassNames.simpleClassName(this)+")");
+ producer+"->"+targetSensor+" (computing transformation
with "+JavaClassNames.simpleClassName(this)+")");
// we don't throw because this error may manifest itself after
a lengthy deployment,
// and failing it at that point simply because of an enricher
is not very pleasant
// (at least not until we have good re-run support across the
board)
return;
}
- subscriptions().subscribe(producer, sourceSensor, this);
+ if (sourceSensor != null) {
+
subscriptions().subscribe(MutableMap.of("notifyOfInitialValue", true),
producer, sourceSensor, this);
+ }
- if (sourceSensor instanceof AttributeSensor) {
- Object value =
producer.getAttribute((AttributeSensor<?>)sourceSensor);
- // TODO would be useful to have a convenience to
"subscribeAndThenIfItIsAlreadySetRunItOnce"
- if (value!=null) {
- onEvent(new BasicSensorEvent(sourceSensor, producer,
value, -1));
+ if (triggerSensors.size() > 0) {
+ SensorEventListener<Object> triggerListener = new
SensorEventListener<Object>() {
+ @Override public void onEvent(SensorEvent<Object> event) {
+ if (sourceSensor != null) {
+ // Simulate an event, as though our sourceSensor
changed
+ Object value =
producer.getAttribute((AttributeSensor<?>)sourceSensor);
+ AbstractTransformer.this.onEvent(new
BasicSensorEvent(sourceSensor, producer, value, event.getTimestamp()));
+ } else {
+ // Dangerous casting, but will assume that the
transform doesn't care - otherwise
+ // it would have declared a sourceSensor!
+ AbstractTransformer.this.onEvent(null);
--- End diff --
Comment is no longer applicable.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
