[logging-log4j2] 02/02: Validate input in ctor.

[ggregory]

This is an automated email from the ASF dual-hosted git repository.

ggregory pushed a commit to branch release-2.x
in repository https://gitbox.apache.org/repos/asf/logging-log4j2.git

commit eb358036863ea13fc006ea0f43bbe90d4673ce88
Author: Gary Gregory <gardgreg...@gmail.com>
AuthorDate: Thu Feb 25 08:11:29 2021 -0500

    Validate input in ctor.
---
 .../src/main/java/org/apache/logging/log4j/core/util/WatchManager.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git 
a/log4j-core/src/main/java/org/apache/logging/log4j/core/util/WatchManager.java 
b/log4j-core/src/main/java/org/apache/logging/log4j/core/util/WatchManager.java
index e760809..e4ab843 100644
--- 
a/log4j-core/src/main/java/org/apache/logging/log4j/core/util/WatchManager.java
+++ 
b/log4j-core/src/main/java/org/apache/logging/log4j/core/util/WatchManager.java
@@ -22,6 +22,7 @@ import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.ServiceLoader;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
@@ -132,7 +133,7 @@ public class WatchManager extends AbstractLifeCycle {
     private final UUID id = LocalUUID.get();
 
     public WatchManager(final ConfigurationScheduler scheduler) {
-        this.scheduler = scheduler;
+        this.scheduler = Objects.requireNonNull(scheduler, "scheduler");
         eventServiceList = getEventServices();
     }