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Apache ZooKeeper 3.7.0 Server Source Code
Apache ZooKeeper is an open-source server which enables highly
reliable distributed coordination.
Apache ZooKeeper Server Source Code files are provided in the source packge (apache-zookeeper-3.7.0.tar.gz). You can download it at Apache ZooKeeper Website.
You can also browse Apache ZooKeeper Server Source Code below:
✍: FYIcenter.com
⏎ org/apache/zookeeper/server/NodeHashMapImpl.java
/* * 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.zookeeper.server; import java.util.Map; import java.util.Set; import java.util.concurrent.ConcurrentHashMap; import org.apache.zookeeper.ZooDefs; import org.apache.zookeeper.server.util.AdHash; /** * a simple wrapper to ConcurrentHashMap that recalculates a digest after * each mutation. */ public class NodeHashMapImpl implements NodeHashMap { private final ConcurrentHashMap<String, DataNode> nodes; private final boolean digestEnabled; private final DigestCalculator digestCalculator; private final AdHash hash; public NodeHashMapImpl(DigestCalculator digestCalculator) { this.digestCalculator = digestCalculator; nodes = new ConcurrentHashMap<>(); hash = new AdHash(); digestEnabled = ZooKeeperServer.isDigestEnabled(); } @Override public DataNode put(String path, DataNode node) { DataNode oldNode = nodes.put(path, node); addDigest(path, node); if (oldNode != null) { removeDigest(path, oldNode); } return oldNode; } @Override public DataNode putWithoutDigest(String path, DataNode node) { return nodes.put(path, node); } @Override public DataNode get(String path) { return nodes.get(path); } @Override public DataNode remove(String path) { DataNode oldNode = nodes.remove(path); if (oldNode != null) { removeDigest(path, oldNode); } return oldNode; } @Override public Set<Map.Entry<String, DataNode>> entrySet() { return nodes.entrySet(); } @Override public void clear() { nodes.clear(); hash.clear(); } @Override public int size() { return nodes.size(); } @Override public void preChange(String path, DataNode node) { removeDigest(path, node); } @Override public void postChange(String path, DataNode node) { // we just made a change, so make sure the digest is // invalidated node.digestCached = false; addDigest(path, node); } private void addDigest(String path, DataNode node) { // Excluding everything under '/zookeeper/' for digest calculation. if (path.startsWith(ZooDefs.ZOOKEEPER_NODE_SUBTREE)) { return; } if (digestEnabled) { hash.addDigest(digestCalculator.calculateDigest(path, node)); } } private void removeDigest(String path, DataNode node) { // Excluding everything under '/zookeeper/' for digest calculation. if (path.startsWith(ZooDefs.ZOOKEEPER_NODE_SUBTREE)) { return; } if (digestEnabled) { hash.removeDigest(digestCalculator.calculateDigest(path, node)); } } @Override public long getDigest() { return hash.getHash(); } }
⏎ org/apache/zookeeper/server/NodeHashMapImpl.java
Or download all of them as a single archive file:
File name: zookeeper-server-3.7.0-fyi.zip File size: 871011 bytes Release date: 2021-05-17 Download
⇒ Apache ZooKeeper 3.7.0 Jute Source Code
⇐ Download Apache ZooKeeper 3.7.0 Source Package
2022-11-16, 25569👍, 0💬
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