Add more discard handlers

src/main/java/it/cavallium/dbengine/database/LLUtils.java

@@ -480,7 +480,8 @@ public class LLUtils {
 				return Mono.empty();
 			}
 		}, (r, ex) -> Mono.fromRunnable(() -> r.close()), r -> Mono.fromRunnable(() -> r.close()))
-				.doOnDiscard(Send.class, send -> send.close());
+				.doOnDiscard(Send.class, send -> send.close())
+				.doOnDiscard(Resource.class, Resource::close);
 	}
 
 	// todo: remove this ugly method
@@ -916,6 +917,7 @@ public class LLUtils {
 				.doOnDiscard(Delta.class, LLUtils::discardDelta)
 				.doOnDiscard(LLDelta.class, LLUtils::discardLLDelta)
 				.doOnDiscard(Send.class, LLUtils::discardSend)
+				.doOnDiscard(Resource.class, LLUtils::discardResource)
 				.doOnDiscard(Map.class, LLUtils::discardMap)
 				.doOnDiscard(DatabaseStage.class, LLUtils::discardStage);
 
@@ -944,6 +946,8 @@ public class LLUtils {
 				discardLLDelta(o);
 			} else if (obj instanceof Send o) {
 				discardSend(o);
+			} else if (obj instanceof Resource o) {
+				discardResource(o);
 			} else if (obj instanceof Map o) {
 				discardMap(o);
 			} else if (obj instanceof DatabaseStage o) {
@@ -1059,6 +1063,10 @@ public class LLUtils {
 		send.close();
 	}
 
+	private static void discardResource(Resource<?> res) {
+		res.close();
+	}
+
 	private static void discardMap(Map<?, ?> map) {
 		for (Entry<?, ?> entry : map.entrySet()) {
 			boolean hasByteBuf = false;

src/main/java/it/cavallium/dbengine/database/collections/DatabaseMapDictionary.java

@@ -1,6 +1,7 @@
 package it.cavallium.dbengine.database.collections;
 
 import io.net5.buffer.api.Buffer;
+import io.net5.buffer.api.Resource;
 import io.net5.buffer.api.Send;
 import io.net5.buffer.api.internal.ResourceSupport;
 import it.cavallium.dbengine.client.CompositeSnapshot;
@@ -364,11 +365,13 @@ public class DatabaseMapDictionary<T, U> extends DatabaseMapDictionaryDeep<T, U,
 						sink.error(e);
 					}
 				})
-				.doOnDiscard(Send.class, Send::close);
+				.doOnDiscard(Send.class, Send::close)
+				.doOnDiscard(Resource.class, Resource::close);
 		return dictionary
 				.putMulti(serializedEntries, false)
 				.then()
 				.doOnDiscard(Send.class, Send::close)
+				.doOnDiscard(Resource.class, Resource::close)
 				.doOnDiscard(LLEntry.class, ResourceSupport::close)
 				.doOnDiscard(List.class, list -> {
 					for (Object o : list) {

src/main/java/it/cavallium/dbengine/database/disk/CachedIndexSearcherManager.java

@@ -3,6 +3,7 @@ package it.cavallium.dbengine.database.disk;
 import com.google.common.cache.CacheBuilder;
 import com.google.common.cache.CacheLoader;
 import com.google.common.cache.LoadingCache;
+import io.net5.buffer.api.Resource;
 import io.net5.buffer.api.Send;
 import it.cavallium.dbengine.database.LLSnapshot;
 import java.io.IOException;
@@ -148,7 +149,8 @@ public class CachedIndexSearcherManager implements IndexSearcherManager {
 						assert indexSearcher.getIndexReader().getRefCount() > 0;
 						return new LLIndexSearcher(indexSearcher, decRef, this::dropCachedIndexSearcher).send();
 					})
-					.doOnDiscard(Send.class, Send::close);
+					.doOnDiscard(Send.class, Send::close)
+					.doOnDiscard(Resource.class, Resource::close);
 		});
 	}
 

src/main/java/it/cavallium/dbengine/database/disk/LLLocalLuceneIndex.java

@@ -384,13 +384,15 @@ public class LLLocalLuceneIndex implements LLLuceneIndex {
 		return localSearcher
 				.collect(searcher, localQueryParams, keyFieldName, NO_TRANSFORMATION)
 				.map(result -> new LLSearchResultShard(result.results(), result.totalHitsCount(), result::close))
-				.doOnDiscard(Send.class, Send::close);
+				.doOnDiscard(Send.class, Send::close)
+				.doOnDiscard(Resource.class, Resource::close);
 	}
 
 	public Mono<Send<LLIndexSearcher>> retrieveSearcher(@Nullable LLSnapshot snapshot) {
 		return searcherManager
 				.retrieveSearcher(snapshot)
-				.doOnDiscard(Send.class, Send::close);
+				.doOnDiscard(Send.class, Send::close)
+				.doOnDiscard(Resource.class, Resource::close);
 	}
 
 	@Override

src/main/java/it/cavallium/dbengine/database/memory/LLMemoryDictionary.java

@@ -2,6 +2,7 @@ package it.cavallium.dbengine.database.memory;
 
 import io.net5.buffer.api.Buffer;
 import io.net5.buffer.api.BufferAllocator;
+import io.net5.buffer.api.Resource;
 import io.net5.buffer.api.Send;
 import it.cavallium.dbengine.client.BadBlock;
 import it.cavallium.dbengine.database.LLDelta;
@@ -528,7 +529,8 @@ public class LLMemoryDictionary implements LLDictionary {
 		return getRange(snapshot, rangeMono)
 				.take(1, true)
 				.singleOrEmpty()
-				.doOnDiscard(Send.class, Send::close);
+				.doOnDiscard(Send.class, Send::close)
+				.doOnDiscard(Resource.class, Resource::close);
 	}
 
 	@Override
@@ -536,7 +538,8 @@ public class LLMemoryDictionary implements LLDictionary {
 		return getRangeKeys(snapshot, rangeMono)
 				.take(1, true)
 				.singleOrEmpty()
-				.doOnDiscard(Send.class, Send::close);
+				.doOnDiscard(Send.class, Send::close)
+				.doOnDiscard(Resource.class, Resource::close);
 	}
 
 	@Override

src/main/java/it/cavallium/dbengine/lucene/searcher/CountLocalSearcher.java

@@ -1,5 +1,6 @@
 package it.cavallium.dbengine.lucene.searcher;
 
+import io.net5.buffer.api.Resource;
 import io.net5.buffer.api.Send;
 import it.cavallium.dbengine.client.query.current.data.TotalHitsCount;
 import it.cavallium.dbengine.database.LLUtils;
@@ -39,7 +40,8 @@ public class CountLocalSearcher implements LocalSearcher {
 						is -> Mono.empty()
 				)
 				.map(count -> new LuceneSearchResult(TotalHitsCount.of(count, true), Flux.empty(), null))
-				.doOnDiscard(Send.class, Send::close);
+				.doOnDiscard(Send.class, Send::close)
+				.doOnDiscard(Resource.class, Resource::close);
 	}
 
 	@Override