commit 3e14f53ad4831fcf096f762c7634ca8ac441bcfb
author pierventre <pier@opennetworking.org> Wed Sep 22 21:38:49 2021 +0200
committer Pier Luigi Ventre <pier@opennetworking.org> Mon Sep 27 19:26:50 2021 +0000
tree 0cd0783e36ea5be83275e6e601fcd7143211aabd
parent 24a35833824c5e0c8155cc8ffb72b0b41b953387

[SDFAB-612] Cluster not ready when using recent tost master images

There is no guarantee that the HostProbingProvider is already
registered before setDelegate is called. This patch prevents
npe caused by events delivered before the provider is ready

Change-Id: I8612a3b156e342752d1ade9ee1d7d786ad53cc9e
(cherry picked from commit e84b2e8081ea40ff06eaa1b119c6e22cfcf9459d)

core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java

diff --git a/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java b/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java
index ea3a8a1..64f2791 100644
--- a/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java
+++ b/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java
@@ -52,7 +52,12 @@
     private static final String SCHEME = "hostprobing";
 
     private HostProbingStoreDelegate delegate = event -> {
-        getProvider(SCHEME).processEvent(event);
+        HostProbingProvider hostProbingProvider = getProvider(SCHEME);
+        if (hostProbingProvider != null) {
+            hostProbingProvider.processEvent(event);
+        } else {
+            log.warn("Unable to find host probing provider. Cannot handle event {}", event);
+        }
     };
 
     @Activate