commit 7e41399499641b0224459ef6e7769da4b4db16ae
author pierventre <pier@opennetworking.org> Wed Sep 22 21:38:49 2021 +0200
committer Pier Luigi Ventre <pier@opennetworking.org> Mon Sep 27 19:26:35 2021 +0000
tree 0da82f7ff6b00318f2eac49bdbff2404b9b04002
parent 1ee1fce27e7f8eaff48b2b98aa7ef3fefcecc584

[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