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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/SnapshotFormatter.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; import static org.apache.zookeeper.server.persistence.FileSnap.SNAPSHOT_FILE_PREFIX; import com.fasterxml.jackson.core.io.JsonStringEncoder; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.Base64; import java.util.Date; import java.util.HashMap; import java.util.Map; import java.util.Set; import org.apache.jute.BinaryInputArchive; import org.apache.jute.InputArchive; import org.apache.yetus.audience.InterfaceAudience; import org.apache.zookeeper.ZKUtil; import org.apache.zookeeper.data.StatPersisted; import org.apache.zookeeper.server.persistence.FileSnap; import org.apache.zookeeper.server.persistence.SnapStream; import org.apache.zookeeper.server.persistence.Util; import org.apache.zookeeper.util.ServiceUtils; /** * Dump a snapshot file to stdout. * * For JSON format, followed https://dev.yorhel.nl/ncdu/jsonfmt */ @InterfaceAudience.Public public class SnapshotFormatter { // per-znode counter so ncdu treats each as a unique object private static Integer INODE_IDX = 1000; /** * USAGE: SnapshotFormatter snapshot_file or the ready-made script: zkSnapShotToolkit.sh */ public static void main(String[] args) throws Exception { String snapshotFile = null; boolean dumpData = false; boolean dumpJson = false; int i; for (i = 0; i < args.length; i++) { if (args[i].equals("-d")) { dumpData = true; } else if (args[i].equals("-json")) { dumpJson = true; } else { snapshotFile = args[i]; i++; break; } } if (args.length != i || snapshotFile == null) { System.err.println("USAGE: SnapshotFormatter [-d|-json] snapshot_file"); System.err.println(" -d dump the data for each znode"); System.err.println(" -json dump znode info in json format"); ServiceUtils.requestSystemExit(ExitCode.INVALID_INVOCATION.getValue()); return; } String error = ZKUtil.validateFileInput(snapshotFile); if (null != error) { System.err.println(error); ServiceUtils.requestSystemExit(ExitCode.INVALID_INVOCATION.getValue()); } if (dumpData && dumpJson) { System.err.println("Cannot specify both data dump (-d) and json mode (-json) in same call"); ServiceUtils.requestSystemExit(ExitCode.INVALID_INVOCATION.getValue()); } new SnapshotFormatter().run(snapshotFile, dumpData, dumpJson); } public void run(String snapshotFileName, boolean dumpData, boolean dumpJson) throws IOException { File snapshotFile = new File(snapshotFileName); try (InputStream is = SnapStream.getInputStream(snapshotFile)) { InputArchive ia = BinaryInputArchive.getArchive(is); FileSnap fileSnap = new FileSnap(null); DataTree dataTree = new DataTree(); Map<Long, Integer> sessions = new HashMap<Long, Integer>(); fileSnap.deserialize(dataTree, sessions, ia); long fileNameZxid = Util.getZxidFromName(snapshotFile.getName(), SNAPSHOT_FILE_PREFIX); if (dumpJson) { printSnapshotJson(dataTree); } else { printDetails(dataTree, sessions, dumpData, fileNameZxid); } } } private void printDetails(DataTree dataTree, Map<Long, Integer> sessions, boolean dumpData, long fileNameZxid) { long dtZxid = printZnodeDetails(dataTree, dumpData); printSessionDetails(dataTree, sessions); DataTree.ZxidDigest targetZxidDigest = dataTree.getDigestFromLoadedSnapshot(); if (targetZxidDigest != null) { System.out.println(String.format("Target zxid digest is: %s, %s", Long.toHexString(targetZxidDigest.zxid), targetZxidDigest.digest)); } System.out.println(String.format("----%nLast zxid: 0x%s", Long.toHexString(Math.max(fileNameZxid, dtZxid)))); } private long printZnodeDetails(DataTree dataTree, boolean dumpData) { System.out.println(String.format("ZNode Details (count=%d):", dataTree.getNodeCount())); final long zxid = printZnode(dataTree, "/", dumpData); System.out.println("----"); return zxid; } private long printZnode(DataTree dataTree, String name, boolean dumpData) { System.out.println("----"); DataNode n = dataTree.getNode(name); Set<String> children; long zxid; synchronized (n) { // keep findbugs happy System.out.println(name); printStat(n.stat); zxid = Math.max(n.stat.getMzxid(), n.stat.getPzxid()); if (dumpData) { System.out.println(" data = " + (n.data == null ? "" : Base64.getEncoder().encodeToString(n.data))); } else { System.out.println(" dataLength = " + (n.data == null ? 0 : n.data.length)); } children = n.getChildren(); } if (children != null) { for (String child : children) { long cxid = printZnode(dataTree, name + (name.equals("/") ? "" : "/") + child, dumpData); zxid = Math.max(zxid, cxid); } } return zxid; } private void printSessionDetails(DataTree dataTree, Map<Long, Integer> sessions) { System.out.println("Session Details (sid, timeout, ephemeralCount):"); for (Map.Entry<Long, Integer> e : sessions.entrySet()) { long sid = e.getKey(); System.out.println(String.format("%#016x, %d, %d", sid, e.getValue(), dataTree.getEphemerals(sid).size())); } } private void printStat(StatPersisted stat) { printHex("cZxid", stat.getCzxid()); System.out.println(" ctime = " + new Date(stat.getCtime()).toString()); printHex("mZxid", stat.getMzxid()); System.out.println(" mtime = " + new Date(stat.getMtime()).toString()); printHex("pZxid", stat.getPzxid()); System.out.println(" cversion = " + stat.getCversion()); System.out.println(" dataVersion = " + stat.getVersion()); System.out.println(" aclVersion = " + stat.getAversion()); printHex("ephemeralOwner", stat.getEphemeralOwner()); } private void printHex(String prefix, long value) { System.out.println(String.format(" %s = %#016x", prefix, value)); } private void printSnapshotJson(final DataTree dataTree) { JsonStringEncoder encoder = JsonStringEncoder.getInstance(); System.out.printf( "[1,0,{\"progname\":\"SnapshotFormatter.java\",\"progver\":\"0.01\",\"timestamp\":%d}", System.currentTimeMillis()); printZnodeJson(dataTree, "/", encoder); System.out.print("]"); } private void printZnodeJson(final DataTree dataTree, final String fullPath, JsonStringEncoder encoder) { final DataNode n = dataTree.getNode(fullPath); if (null == n) { System.err.println("DataTree Node for " + fullPath + " doesn't exist"); return; } final String name = fullPath.equals("/") ? fullPath : fullPath.substring(fullPath.lastIndexOf("/") + 1); System.out.print(","); int dataLen; synchronized (n) { // keep findbugs happy dataLen = (n.data == null) ? 0 : n.data.length; } StringBuilder nodeSB = new StringBuilder(); nodeSB.append("{"); nodeSB.append("\"name\":\"").append(encoder.quoteAsString(name)).append("\"").append(","); nodeSB.append("\"asize\":").append(dataLen).append(","); nodeSB.append("\"dsize\":").append(dataLen).append(","); nodeSB.append("\"dev\":").append(0).append(","); nodeSB.append("\"ino\":").append(++INODE_IDX); nodeSB.append("}"); Set<String> children; synchronized (n) { // keep findbugs happy children = n.getChildren(); } if (children != null && children.size() > 0) { System.out.print("[" + nodeSB); for (String child : children) { printZnodeJson(dataTree, fullPath + (fullPath.equals("/") ? "" : "/") + child, encoder); } System.out.print("]"); } else { System.out.print(nodeSB); } } }
⏎ org/apache/zookeeper/server/SnapshotFormatter.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, 24834👍, 0💬
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