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[ISSUE#3833] Fix NullPointerException when no subscriber for slow event #3835

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merged 1 commit into from
Sep 15, 2020
Merged

[ISSUE#3833] Fix NullPointerException when no subscriber for slow event #3835

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4 changes: 4 additions & 0 deletions common/src/main/java/com/alibaba/nacos/common/notify/DefaultSharePublisher.java
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,10 @@ public void receiveEvent(Event event) {

// Get for Map, the algorithm is O(1).
Set<Subscriber> subscribers = subMappings.get(slowEventType);
if (null == subscribers) {
LOGGER.debug("[NotifyCenter] No subscribers for slow event {}", slowEventType.getName());
return;
}

// Notification single event subscriber
for (Subscriber subscriber : subscribers) {
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1 change: 1 addition & 0 deletions common/src/test/java/com/alibaba/nacos/common/notify/NotifyCenterTest.java
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Expand Up @@ -132,6 +132,7 @@ public Class<? extends Event> subscribeType() {
return ExpireEvent.class;
}

@Override
public boolean ignoreExpireEvent() {
return true;
}
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