Use specific IOContext class

Author: thecoop

x-pack/plugin/searchable-snapshots/src/main/java/org/elasticsearch/xpack/searchablesnapshots/store/input/CachedBlobContainerIndexInput.java

@@ -9,7 +9,9 @@
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.apache.lucene.store.FlushInfo;
 import org.apache.lucene.store.IOContext;
+import org.apache.lucene.store.MergeInfo;
 import org.apache.lucene.store.ReadAdvice;
 import org.elasticsearch.blobcache.BlobCacheUtils;
 import org.elasticsearch.blobcache.common.ByteRange;
@@ -21,6 +23,8 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.ByteBuffer;
+import java.util.Optional;
+import java.util.Set;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.function.Predicate;
 import java.util.function.Supplier;
@@ -36,7 +40,42 @@ public class CachedBlobContainerIndexInput extends MetadataCachingIndexInput {
      * a complete part of the {@link #fileInfo} at once in the cache and should not be
      * used for anything else than what the {@link #prefetchPart(int, Supplier)} method does.
      */
-    public static final IOContext CACHE_WARMING_CONTEXT = IOContext.DEFAULT.withReadAdvice(ReadAdvice.NORMAL);
+    public static final IOContext CACHE_WARMING_CONTEXT = new IOContext() {
+        @Override
+        public Context context() {
+            return Context.DEFAULT;
+        }
+
+        @Override
+        public MergeInfo mergeInfo() {
+            return null;
+        }
+
+        @Override
+        public FlushInfo flushInfo() {
+            return null;
+        }
+
+        @Override
+        public Set<FileOpenHint> hints() {
+            return Set.of();
+        }
+
+        @Override
+        public IOContext withHints(FileOpenHint... hints) {
+            return this;
+        }
+
+        @Override
+        public Optional<ReadAdvice> readAdvice() {
+            return Optional.of(ReadAdvice.NORMAL);
+        }
+
+        @Override
+        public IOContext withReadAdvice(ReadAdvice advice) {
+            return this;
+        }
+    };
 
     private static final Logger logger = LogManager.getLogger(CachedBlobContainerIndexInput.class);