[Tiered Caching] Bump versions for serialization in new cache stats API (opensearch-project#13460)

---------

Signed-off-by: Peter Alfonsi <[email protected]>
Co-authored-by: Peter Alfonsi <[email protected]>

Author: peteralfonsi

server/src/main/java/org/opensearch/index/cache/request/ShardRequestCache.java

@@ -32,6 +32,7 @@
 
 package org.opensearch.index.cache.request;
 
+import org.apache.lucene.util.Accountable;
 import org.opensearch.common.metrics.CounterMetric;
 import org.opensearch.core.common.bytes.BytesReference;
 
@@ -59,6 +60,7 @@ public void onMiss() {
         missCount.inc();
     }
 
+    // Functions used to increment size by passing in the size directly, Used now, as we use ICacheKey<Key> in the IndicesRequestCache..
     public void onCached(long keyRamBytesUsed, BytesReference value) {
         totalMetric.inc(keyRamBytesUsed + value.ramBytesUsed());
     }
@@ -73,4 +75,22 @@ public void onRemoval(long keyRamBytesUsed, BytesReference value, boolean evicte
         }
         totalMetric.dec(dec);
     }
+
+    // Old functions which increment size by passing in an Accountable. Functional but no longer used.
+    public void onCached(Accountable key, BytesReference value) {
+        totalMetric.inc(key.ramBytesUsed() + value.ramBytesUsed());
+    }
+
+    public void onRemoval(Accountable key, BytesReference value, boolean evicted) {
+        if (evicted) {
+            evictionsMetric.inc();
+        }
+        long dec = 0;
+        if (key != null) {
+            dec += key.ramBytesUsed();
+        }
+        if (value != null) {
+            dec += value.ramBytesUsed();
+        }
+    }
 }