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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/watch/WatcherModeManager.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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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.watch; import java.util.Map; import java.util.Objects; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.atomic.AtomicInteger; import org.apache.zookeeper.Watcher; class WatcherModeManager { private final Map<Key, WatcherMode> watcherModes = new ConcurrentHashMap<>(); private final AtomicInteger recursiveQty = new AtomicInteger(0); private static class Key { private final Watcher watcher; private final String path; Key(Watcher watcher, String path) { this.watcher = watcher; this.path = path; } @Override public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } Key key = (Key) o; return watcher.equals(key.watcher) && path.equals(key.path); } @Override public int hashCode() { return Objects.hash(watcher, path); } } // VisibleForTesting Map<Key, WatcherMode> getWatcherModes() { return watcherModes; } void setWatcherMode(Watcher watcher, String path, WatcherMode mode) { if (mode == WatcherMode.DEFAULT_WATCHER_MODE) { removeWatcher(watcher, path); } else { adjustRecursiveQty(watcherModes.put(new Key(watcher, path), mode), mode); } } WatcherMode getWatcherMode(Watcher watcher, String path) { return watcherModes.getOrDefault(new Key(watcher, path), WatcherMode.DEFAULT_WATCHER_MODE); } void removeWatcher(Watcher watcher, String path) { adjustRecursiveQty(watcherModes.remove(new Key(watcher, path)), WatcherMode.DEFAULT_WATCHER_MODE); } int getRecursiveQty() { return recursiveQty.get(); } // recursiveQty is an optimization to avoid having to walk the map every time this value is needed private void adjustRecursiveQty(WatcherMode oldMode, WatcherMode newMode) { if (oldMode == null) { oldMode = WatcherMode.DEFAULT_WATCHER_MODE; } if (oldMode.isRecursive() != newMode.isRecursive()) { if (newMode.isRecursive()) { recursiveQty.incrementAndGet(); } else { recursiveQty.decrementAndGet(); } } } }
⏎ org/apache/zookeeper/server/watch/WatcherModeManager.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, 13017👍, 0💬
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