Enh 37387065 - [37381796->25.03] Topics: general refactoring and hardening

(merge main -> ce/main 113425)

[git-p4: depot-paths = "//dev/coherence-ce/main/": change = 113428]

Author: Jonathan Knight

prj/coherence-core-components/src/main/java/com/tangosol/coherence/component/util/safeNamedTopic/SafePublisherConnector.java

@@ -308,10 +308,6 @@ protected PublisherChannelConnector<V> ensureRunningChannelConnector()
             {
             PublisherChannelConnector<V> connector = m_channelConnector;
             TopicService                 service   = getTopicService();
-            if (!service.isRunning())
-                {
-                System.out.println();
-                }
             if (!service.isRunning() || connector == null || !connector.isActive())
                 {
                 f_lock.lock();

prj/coherence-core/src/main/java/com/oracle/coherence/common/base/Exceptions.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2023, Oracle and/or its affiliates.
+ * Copyright (c) 2020, 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at
  * https://oss.oracle.com/licenses/upl.
@@ -99,6 +99,25 @@ else if (t.getClass().getName().equals("javax.ejb.EJBException"))
             }
         }
 
+    /**
+     * Return the root cause of an exception.
+     *
+     * @param t  the exception to find the root cause in
+     *
+     * @return  the root cause of the exception
+     */
+    public static Throwable getRootCause(Throwable t)
+        {
+        Throwable rootCause = t;
+        Throwable cause     = t.getCause();
+        while (cause != null)
+            {
+            rootCause = cause;
+            cause      = cause.getCause();
+            }
+        return rootCause;
+        }
+
     /**
      * Re-throw the specified exception if it is a fatal unrecoverable exception.
      *

prj/coherence-core/src/main/java/com/tangosol/internal/net/topic/NamedTopicSubscriber.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2024, Oracle and/or its affiliates.
+ * Copyright (c) 2000, 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at
  * https://oss.oracle.com/licenses/upl.
@@ -103,7 +103,7 @@
  *
  * @author Jonathan Knight  2024.11.26
  */
-@SuppressWarnings({"rawtypes", "PatternVariableCanBeUsed", "SameParameterValue"})
+@SuppressWarnings({"rawtypes", "PatternVariableCanBeUsed", "SameParameterValue", "SimplifyStreamApiCallChains"})
 public class NamedTopicSubscriber<V>
     implements Subscriber<V>, SubscriberConnector.ConnectedSubscriber<V>, SubscriberStatistics, AutoCloseable
     {
@@ -414,7 +414,7 @@ public CompletableFuture<Map<Integer, CommitResult>> commitAsync(Map<Integer, Po
                 .map(e -> commitInternal(e.getKey(), e.getValue(), mapResult))
                 .toArray(CompletableFuture[]::new);
 
-        return CompletableFuture.allOf(aFuture).handle((_void, err) -> mapResult);
+        return CompletableFuture.allOf(aFuture).thenApply(_void -> mapResult);
         }
 
     /**
@@ -1379,16 +1379,13 @@ private CompletableFuture<CommitResult> commitInternal(int nChannel, Position po
             {
             TopicChannel channel = m_aChannel[nChannel];
             return f_connector.commit(this, nChannel, position)
-                    .handle((result, err) ->
+                    .thenApply(result ->
                         {
-                        if (err == null)
+                        if (mapResult != null)
                             {
-                            if (mapResult != null)
-                                {
-                                mapResult.put(nChannel, result);
-                                }
-                            channel.committed(position);
+                            mapResult.put(nChannel, result);
                             }
+                        channel.committed(position);
                         return result;
                         });
             }
@@ -1458,7 +1455,7 @@ private Map<Integer, Position> seekInternal(Map<Integer, Position> mapPosition)
 
         List<Integer> listUnallocated = mapPosition.keySet().stream()
                 .filter(c -> !isOwner(c))
-                .toList();
+                .collect(Collectors.toList());
 
         if (!listUnallocated.isEmpty())
             {
@@ -1501,7 +1498,7 @@ private Map<Integer, Position> seekInternalToTimestamps(Map<Integer, Instant> ma
 
         List<Integer> listUnallocated = mapInstant.keySet().stream()
                 .filter(c -> !isOwner(c))
-                .toList();
+                .collect(Collectors.toList());
 
         if (!listUnallocated.isEmpty())
             {
@@ -1538,7 +1535,7 @@ private void ensureActiveAnOwnedChannels(int... anChannel)
             List<Integer> listUnallocated = Arrays.stream(anChannel)
                     .filter(c -> !isOwner(c))
                     .boxed()
-                    .toList();
+                    .collect(Collectors.toList());
 
             if (!listUnallocated.isEmpty())
                 {