Github user nakomis commented on a diff in the pull request:
https://github.com/apache/incubator-brooklyn/pull/910#discussion_r41754591
--- Diff:
core/src/main/java/org/apache/brooklyn/enricher/stock/AbstractTransformer.java
---
@@ -57,14 +57,16 @@ public AbstractTransformer() {
public void setEntity(EntityLocal entity) {
super.setEntity(entity);
- Function<SensorEvent<T>, U> transformation = getTransformation();
this.producer = getConfig(PRODUCER) == null ? entity:
getConfig(PRODUCER);
this.sourceSensor = (Sensor<T>) getRequiredConfig(SOURCE_SENSOR);
Sensor<?> targetSensorSpecified = getConfig(TARGET_SENSOR);
this.targetSensor = targetSensorSpecified!=null ? (Sensor<U>)
targetSensorSpecified : (Sensor<U>) this.sourceSensor;
if (producer.equals(entity) && targetSensorSpecified==null) {
+ // 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: "+
--- End diff --
As stated in the comment, we can't call getTransformation() here as the
entity is being initialized, so the call will block
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