xtern commented on a change in pull request #7941: URL: https://github.com/apache/ignite/pull/7941#discussion_r503380940
########## File path: modules/core/src/main/java/org/apache/ignite/internal/managers/encryption/CacheGroupEncryptionKeys.java ########## @@ -0,0 +1,376 @@ +/* + * 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.ignite.internal.managers.encryption; + +import java.io.Serializable; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.ListIterator; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentLinkedQueue; +import java.util.concurrent.CopyOnWriteArrayList; +import org.apache.ignite.internal.util.typedef.F; +import org.apache.ignite.internal.util.typedef.internal.U; +import org.apache.ignite.spi.encryption.EncryptionSpi; +import org.jetbrains.annotations.Nullable; + +/** + * Serves for managing encryption keys and related datastructure located in the heap. + */ +class CacheGroupEncryptionKeys { + /** Group encryption keys. */ + private final Map<Integer, List<GroupKey>> grpKeys = new ConcurrentHashMap<>(); + + /** + * WAL segments encrypted with previous encryption keys prevent keys from being deleted + * until the associated segment is deleted. + */ + private final Collection<TrackedWalSegment> trackedWalSegments = new ConcurrentLinkedQueue<>(); Review comment: We only keep track of the last WAL segment encrypted with a specific encryption key, so we only store the current WAL segment index every time the encryption key is rotated. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected]
