[ISSUE #10105] Fix ClassCastException in getLocks() method (#10106)

Author: yx9o

store/src/main/java/org/apache/rocketmq/store/lock/AdaptiveBackOffSpinLockImpl.java

@@ -20,6 +20,7 @@
 
 import java.time.LocalTime;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -166,8 +167,8 @@ public void swap() {
         }
     }
 
-    public List<AdaptiveBackOffSpinLock> getLocks() {
-        return (List<AdaptiveBackOffSpinLock>) this.locks.values();
+    public Collection<AdaptiveBackOffSpinLock> getLocks() {
+        return this.locks.values();
     }
 
     public void setLocks(Map<String, AdaptiveBackOffSpinLock> locks) {

store/src/test/java/org/apache/rocketmq/store/lock/AdaptiveBackOffSpinLockImplTest.java

@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.rocketmq.store.lock;
+
+import org.junit.Test;
+
+import java.util.Collection;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class AdaptiveBackOffSpinLockImplTest {
+
+    @Test
+    public void testGetLocks() {
+        AdaptiveBackOffSpinLockImpl lockImpl = new AdaptiveBackOffSpinLockImpl();
+        Collection<AdaptiveBackOffSpinLock> locks = lockImpl.getLocks();
+        assertEquals(2, locks.size());
+        for (AdaptiveBackOffSpinLock lock : locks) {
+            assertNotNull(lock);
+        }
+    }
+}