clebertsuconic commented on code in PR #4827: URL: https://github.com/apache/activemq-artemis/pull/4827#discussion_r1499280271
########## artemis-journal/src/main/java/org/apache/activemq/artemis/core/journal/collections/JournalHashMapProvider.java: ########## @@ -0,0 +1,86 @@ +/* + * 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.activemq.artemis.core.journal.collections; + +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; +import java.util.function.LongFunction; +import java.util.function.LongSupplier; +import java.util.function.Supplier; + +import io.netty.util.collection.LongObjectHashMap; +import org.apache.activemq.artemis.core.io.IOCriticalErrorListener; +import org.apache.activemq.artemis.core.journal.IOCompletion; +import org.apache.activemq.artemis.core.journal.Journal; +import org.apache.activemq.artemis.core.journal.RecordInfo; +import org.apache.activemq.artemis.core.persistence.Persister; + +public class JournalHashMapProvider<K, V, C> { + + final Journal journal; + final Persister<JournalHashMap.MapRecord<K, V>> persister; + final LongObjectHashMap<JournalHashMap<K, V, C>> journalMaps = new LongObjectHashMap<>(); + final LongSupplier idSupplier; + final byte recordType; + final IOCriticalErrorListener ioExceptionListener; + final Supplier<IOCompletion> ioCompletionSupplier; + final LongFunction<C> contextProvider; + + public JournalHashMapProvider(LongSupplier idSupplier, Journal journal, AbstractHashMapPersister persister, byte recordType, Supplier<IOCompletion> ioCompletionSupplier, LongFunction<C> contextProvider, IOCriticalErrorListener ioExceptionListener) { + this.idSupplier = idSupplier; + this.persister = persister; + this.journal = journal; + this.recordType = recordType; + this.ioExceptionListener = ioExceptionListener; + this.contextProvider = contextProvider; + this.ioCompletionSupplier = ioCompletionSupplier; + } + + public List<JournalHashMap<K, V, C>> getMaps() { + ArrayList<JournalHashMap<K, V, C>> maps = new ArrayList<>(); + journalMaps.values().forEach(maps::add); + return maps; + } + + public void clear() { + journalMaps.clear(); + } + + public void reload(RecordInfo recordInfo) { + JournalHashMap.MapRecord<K, V> mapRecord = persister.decode(recordInfo.wrapData(), null, null); + getMap(mapRecord.collectionID, null).reload(mapRecord); + } + + public Iterator<JournalHashMap<K, V, C>> iterMaps() { + return journalMaps.values().iterator(); + } + + public JournalHashMap<K, V, C> getMap(long collectionID, C context) { + JournalHashMap<K, V, C> journalHashMap = journalMaps.get(collectionID); + if (journalHashMap == null) { + journalHashMap = new JournalHashMap<>(collectionID, journal, idSupplier, persister, recordType, ioCompletionSupplier, contextProvider, ioExceptionListener).setContext(context); + journalMaps.put(collectionID, journalHashMap); + } + return journalHashMap; + } Review Comment: It is from a single thread, but I will add the synchronized. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
