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Apache ZooKeeper 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 package file, apache-zookeeper-3.8.0.tar.gz.
You can download apache-zookeeper-3.8.0.tar.gz as described in the previous tutorial and go to the "zookeeper-server" sub-folder to view Apache ZooKeeper Server Source Code files.
You can also browse Apache ZooKeeper Server Source Code below:
✍: FYIcenter.com
⏎ org/apache/zookeeper/server/auth/EnsembleAuthenticationProvider.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.auth; import java.nio.charset.StandardCharsets; import java.util.HashSet; import java.util.Set; import org.apache.zookeeper.KeeperException; import org.apache.zookeeper.server.ServerCnxn; import org.apache.zookeeper.server.ServerMetrics; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * This is not a true AuthenticationProvider in the strict sense. it does * handle add auth requests, but rather than authenticate the client, it checks * to make sure that the ensemble name the client intends to connect to * matches the name that the server thinks it belongs to. if the name does not match, * this provider will close the connection. */ public class EnsembleAuthenticationProvider implements AuthenticationProvider { private static final Logger LOG = LoggerFactory.getLogger(EnsembleAuthenticationProvider.class); public static final String ENSEMBLE_PROPERTY = "zookeeper.ensembleAuthName"; private static final int MIN_LOGGING_INTERVAL_MS = 1000; private Set<String> ensembleNames; public EnsembleAuthenticationProvider() { String namesCSV = System.getProperty(ENSEMBLE_PROPERTY); if (namesCSV != null) { LOG.info("Set expected ensemble names to {}", namesCSV); setEnsembleNames(namesCSV); } } public void setEnsembleNames(String namesCSV) { ensembleNames = new HashSet<String>(); for (String name : namesCSV.split(",")) { ensembleNames.add(name.trim()); } } /* provider methods */ @Override public String getScheme() { return "ensemble"; } /** * if things go bad, we don't want to freak out with the logging, so track * the last time we logged something here. */ private long lastFailureLogged; @Override public KeeperException.Code handleAuthentication(ServerCnxn cnxn, byte[] authData) { if (authData == null || authData.length == 0) { ServerMetrics.getMetrics().ENSEMBLE_AUTH_SKIP.add(1); return KeeperException.Code.OK; } String receivedEnsembleName = new String(authData, StandardCharsets.UTF_8); if (ensembleNames == null) { ServerMetrics.getMetrics().ENSEMBLE_AUTH_SKIP.add(1); return KeeperException.Code.OK; } if (ensembleNames.contains(receivedEnsembleName)) { ServerMetrics.getMetrics().ENSEMBLE_AUTH_SUCCESS.add(1); return KeeperException.Code.OK; } long currentTime = System.currentTimeMillis(); if (lastFailureLogged + MIN_LOGGING_INTERVAL_MS < currentTime) { String id = cnxn.getRemoteSocketAddress().getAddress().getHostAddress(); LOG.warn("Unexpected ensemble name: ensemble name: {} client ip: {}", receivedEnsembleName, id); lastFailureLogged = currentTime; } /* * we are doing a close here rather than returning some other error * since we want the client to choose another server to connect to. if * we return an error, the client will get a fatal auth error and * shutdown. */ ServerMetrics.getMetrics().ENSEMBLE_AUTH_FAIL.add(1); cnxn.close(ServerCnxn.DisconnectReason.FAILED_HANDSHAKE); return KeeperException.Code.BADARGUMENTS; } /* * since we aren't a true provider we return false for everything so that * it isn't used in ACLs. */ @Override public boolean matches(String id, String aclExpr) { return false; } @Override public boolean isAuthenticated() { return false; } @Override public boolean isValid(String id) { return false; } }
⏎ org/apache/zookeeper/server/auth/EnsembleAuthenticationProvider.java
Or download all of them as a single archive file:
File name: zookeeper-server-3.8.0-fyi.zip File size: 885581 bytes Release date: 2022-02-25 Download
⇒ Apache ZooKeeper Jute Source Code
⇐ Download and Install Apache ZooKeeper Source Package
2022-11-16, 13109👍, 0💬
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