tree 1c5e702cd338dc761d41a9874374db723edf70dd
parent afe17e1fd00b1b8b01f4fa0b8cdfe8fe034d4027
author pier <pier@opennetworking.org> 1550567814 +0100
committer Pier Luigi Ventre <pier@opennetworking.org> 1553562214 +0000

Fix NPE when pending operations are not present
(due to possible race condition)

2019-02-15 11:18:45,407 | WARN  | -event-barrier-1 | LocalCache                       | 94 | Exception thrown by removal listener
java.lang.NullPointerException
	at org.onosproject.net.flow.impl.FlowRuleManager$InternalStoreDelegate.notify(FlowRuleManager.java:639)
	at org.onosproject.net.flow.impl.FlowRuleManager$InternalStoreDelegate.notify(FlowRuleManager.java:591)
	at org.onosproject.store.AbstractStore.notifyDelegate(AbstractStore.java:58)
	at org.onosproject.store.flow.impl.ECFlowRuleStore.batchOperationComplete(ECFlowRuleStore.java:638)
	at org.onosproject.net.flow.impl.FlowRuleManager$InternalFlowRuleProviderService.batchOperationCompleted(FlowRuleManager.java:577)
	at org.onosproject.provider.of.flow.impl.OpenFlowRuleProvider.lambda$createBatchCache$0(OpenFlowRuleProvider.java:231)
	at com.google.common.cache.LocalCache.processPendingNotifications(LocalCache.java:1967)[94:com.google.guava:22.0.0]
	at com.google.common.cache.LocalCache$Segment.runUnlockedCleanup(LocalCache.java:3642)[94:com.google.guava:22.0.0]
	at com.google.common.cache.LocalCache$Segment.postWriteCleanup(LocalCache.java:3618)[94:com.google.guava:22.0.0]
	at com.google.common.cache.LocalCache$Segment.remove(LocalCache.java:3246)[94:com.google.guava:22.0.0]
	at com.google.common.cache.LocalCache.remove(LocalCache.java:4413)[94:com.google.guava:22.0.0]
	at com.google.common.cache.LocalCache$LocalManualCache.invalidate(LocalCache.java:5081)[94:com.google.guava:22.0.0]
	at org.onosproject.provider.of.flow.impl.OpenFlowRuleProvider$InternalFlowProvider.handleMessage(OpenFlowRuleProvider.java:466)[170:org.onosproject.onos-providers-openflow-flow:1.12.2.SNAPSHOT]
	at org.onosproject.openflow.controller.impl.OpenFlowControllerImpl$OFMessageHandler.run(OpenFlowControllerImpl.java:773)[167:org.onosproject.onos-protocols-openflow-ctl:1.12.2.SNAPSHOT]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)[:1.8.0_192]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)[:1.8.0_192]
	at java.lang.Thread.run(Thread.java:748)[:1.8.0_192]

Change-Id: I6eb64524c5e209c4a6d6a6f147d7ab0c86137246