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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/SessionTracker.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.io.PrintWriter; import java.util.Map; import java.util.Set; import org.apache.zookeeper.KeeperException; import org.apache.zookeeper.KeeperException.SessionExpiredException; /** * This is the basic interface that ZooKeeperServer uses to track sessions. The * standalone and leader ZooKeeperServer use the same SessionTracker. The * FollowerZooKeeperServer uses a SessionTracker which is basically a simple * shell to track information to be forwarded to the leader. */ public interface SessionTracker { interface Session { long getSessionId(); int getTimeout(); boolean isClosing(); } interface SessionExpirer { void expire(Session session); long getServerId(); } long createSession(int sessionTimeout); /** * Track the session expire, not add to ZkDb. * @param id sessionId * @param to sessionTimeout * @return whether the session was newly tracked (if false, already tracked) */ boolean trackSession(long id, int to); /** * Add the session to the local session map or global one in zkDB. * @param id sessionId * @param to sessionTimeout * @return whether the session was newly added (if false, already existed) */ boolean commitSession(long id, int to); /** * @param sessionId * @param sessionTimeout * @return false if session is no longer active */ boolean touchSession(long sessionId, int sessionTimeout); /** * Mark that the session is in the process of closing. * @param sessionId */ void setSessionClosing(long sessionId); /** * */ void shutdown(); /** * @param sessionId */ void removeSession(long sessionId); /** * @param sessionId * @return whether or not the SessionTracker is aware of this session */ boolean isTrackingSession(long sessionId); /** * Checks whether the SessionTracker is aware of this session, the session * is still active, and the owner matches. If the owner wasn't previously * set, this sets the owner of the session. * * UnknownSessionException should never been thrown to the client. It is * only used internally to deal with possible local session from other * machine * * @param sessionId * @param owner */ void checkSession(long sessionId, Object owner) throws KeeperException.SessionExpiredException, KeeperException.SessionMovedException, KeeperException.UnknownSessionException; /** * Strictly check that a given session is a global session or not * @param sessionId * @param owner * @throws KeeperException.SessionExpiredException * @throws KeeperException.SessionMovedException */ void checkGlobalSession(long sessionId, Object owner) throws KeeperException.SessionExpiredException, KeeperException.SessionMovedException; void setOwner(long id, Object owner) throws SessionExpiredException; /** * Text dump of session information, suitable for debugging. * @param pwriter the output writer */ void dumpSessions(PrintWriter pwriter); /** * Returns a mapping of time to session IDs that expire at that time. */ Map<Long, Set<Long>> getSessionExpiryMap(); /** * If this session tracker supports local sessions, return how many. * otherwise returns 0; */ long getLocalSessionCount(); boolean isLocalSessionsEnabled(); }
⏎ org/apache/zookeeper/server/SessionTracker.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, 24712👍, 0💬
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