源码环境搭建
有一天大佬问我看过zk的源码吗…？
好的好的 谁说不看呢
说干就干
clone source
https://github.com/apache/zookeeper
当然了，我要看 3.5.8这个版本的
https://github.com/apache/zookeeper/tree/branch-3.5.8
Clone ---- HTTPS
IDEA里
源码结构
启动
查找启动类
根据经验，从启动脚本中去找启动类 ，八成启动类中有个main方法
找启动脚本的 start方法
找到 ZOOMAIN="org.apache.zookeeper.server.quorum.QuorumPeerMain"
ZOOCFG="$2" 可知是通过外部传参进来的，那就按照约定的来吧
配置文件
从 zoo_sample.cfg copy一个出来
# The number of milliseconds of each tick tickTime=2000 # The number of ticks that the initial # synchronization phase can take initLimit=10 # The number of ticks that can pass between # sending a request and getting an acknowledgement syncLimit=5 # the directory where the snapshot is stored. # do not use /tmp for storage, /tmp here is just # example sakes. dataDir=D:\IdeaProjects\zookeeperSource\data\zk # the port at which the clients will connect clientPort=2181 # the maximum number of client connections. # increase this if you need to handle more clients #maxClientCnxns=60 # # Be sure to read the maintenance section of the # administrator guide before turning on autopurge. # # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance # # The number of snapshots to retain in dataDir #autopurge.snapRetainCount=3 # Purge task interval in hours # Set to "0" to disable auto purge feature #autopurge.purgeInterval=1
pom文件调整
将zookeeper-server项目里pom.xml文件里依赖的包的scope为provided这一行全部注释掉 【jline除外】
log4j.properties
将conf文件夹里的log4j.properties文件复制一份到zookeeper-server项目的 \target\classes 目录下,不然没有日志
以源码的方式启动Server
2020-11-27 11:13:47,849 [myid:] - INFO [main:QuorumPeerConfig@135] - Reading configuration from: D:\IdeaProjects\zookeeperSource\conf\zoo.cfg 2020-11-27 11:13:47,858 [myid:] - WARN [main:VerifyingFileFactory@59] - D:IdeaProjectszookeeperSourcedata is relative. Prepend .\ to indicate that you're sure! 2020-11-27 11:13:47,870 [myid:] - INFO [main:QuorumPeerConfig@387] - clientPortAddress is 0.0.0.0:2181 2020-11-27 11:13:47,872 [myid:] - INFO [main:QuorumPeerConfig@391] - secureClientPort is not set 2020-11-27 11:13:47,876 [myid:] - INFO [main:DatadirCleanupManager@78] - autopurge.snapRetainCount set to 3 2020-11-27 11:13:47,876 [myid:] - INFO [main:DatadirCleanupManager@79] - autopurge.purgeInterval set to 0 2020-11-27 11:13:47,876 [myid:] - INFO [main:DatadirCleanupManager@101] - Purge task is not scheduled. 2020-11-27 11:13:47,876 [myid:] - WARN [main:QuorumPeerMain@125] - Either no config or no quorum defined in config, running in standalone mode 2020-11-27 11:13:47,882 [myid:] - INFO [main:ManagedUtil@45] - Log4j 1.2 jmx support found and enabled. 2020-11-27 11:13:47,951 [myid:] - INFO [main:QuorumPeerConfig@135] - Reading configuration from: D:\IdeaProjects\zookeeperSource\conf\zoo.cfg 2020-11-27 11:13:47,951 [myid:] - WARN [main:VerifyingFileFactory@59] - D:IdeaProjectszookeeperSourcedata is relative. Prepend .\ to indicate that you're sure! 2020-11-27 11:13:47,952 [myid:] - INFO [main:QuorumPeerConfig@387] - clientPortAddress is 0.0.0.0:2181 2020-11-27 11:13:47,952 [myid:] - INFO [main:QuorumPeerConfig@391] - secureClientPort is not set 2020-11-27 11:13:47,952 [myid:] - INFO [main:ZooKeeperServerMain@117] - Starting server 2020-11-27 11:13:47,955 [myid:] - INFO [main:FileTxnSnapLog@115] - zookeeper.snapshot.trust.empty : false 2020-11-27 11:13:47,985 [myid:] - INFO [main:Environment@109] - Server environment:zookeeper.version=1.0.0-1, built on 2020-11-27 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:host.name=LAPTOP-JF3RBRRJ 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:java.version=1.8.0_261 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:java.vendor=Oracle Corporation 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:java.home=D:\Program Files (x86)\Java\jdk1.8.0_261\jre 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:java.class.path=D:\Program Files ...... ...... ...... 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:java.io.tmpdir=C:\Users\artisan\AppData\Local\Temp\ 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:java.compiler=<NA> 2020-11-27 11:13:47,987 [myid:] - INFO [main:Environment@109] - Server environment:os.name=Windows 10 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:os.arch=amd64 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:os.version=10.0 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:user.name=artisan 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:user.home=C:\Users\artisan 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:user.dir=D:\IdeaProjects\zookeeperSource 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:os.memory.free=222MB 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:os.memory.max=3499MB 2020-11-27 11:13:47,988 [myid:] - INFO [main:Environment@109] - Server environment:os.memory.total=236MB 2020-11-27 11:13:47,990 [myid:] - INFO [main:ZooKeeperServer@938] - minSessionTimeout set to 4000 2020-11-27 11:13:47,990 [myid:] - INFO [main:ZooKeeperServer@947] - maxSessionTimeout set to 40000 2020-11-27 11:13:47,991 [myid:] - INFO [main:ZooKeeperServer@166] - Created server with tickTime 2000 minSessionTimeout 4000 maxSessionTimeout 40000 datadir D:IdeaProjectszookeeperSourcedata\version-2 snapdir D:IdeaProjectszookeeperSourcedata\version-2 2020-11-27 11:13:48,014 [myid:] - INFO [main:Log@169] - Logging initialized @433ms to org.eclipse.jetty.util.log.Slf4jLog 2020-11-27 11:13:48,167 [myid:] - WARN [main:ContextHandler@1520] - o.e.j.s.ServletContextHandler@215be6bb{/,null,UNAVAILABLE} contextPath ends with /* 2020-11-27 11:13:48,167 [myid:] - WARN [main:ContextHandler@1531] - Empty contextPath 2020-11-27 11:13:48,182 [myid:] - INFO [main:Server@359] - jetty-9.4.24.v20191120; built: 2019-11-20T21:37:49.771Z; git: 363d5f2df3a8a28de40604320230664b9c793c16; jvm 1.8.0_261-b12 2020-11-27 11:13:48,223 [myid:] - INFO [main:DefaultSessionIdManager@333] - DefaultSessionIdManager workerName=node0 2020-11-27 11:13:48,223 [myid:] - INFO [main:DefaultSessionIdManager@338] - No SessionScavenger set, using defaults 2020-11-27 11:13:48,226 [myid:] - INFO [main:HouseKeeper@140] - node0 Scavenging every 660000ms 2020-11-27 11:13:48,235 [myid:] - INFO [main:ContextHandler@825] - Started o.e.j.s.ServletContextHandler@215be6bb{/,null,AVAILABLE} 2020-11-27 11:13:48,462 [myid:] - INFO [main:AbstractConnector@330] - Started ServerConnector@17f6480{HTTP/1.1,[http/1.1]}{0.0.0.0:8080} 2020-11-27 11:13:48,463 [myid:] - INFO [main:Server@399] - Started @882ms 2020-11-27 11:13:48,463 [myid:] - INFO [main:JettyAdminServer@112] - Started AdminServer on address 0.0.0.0, port 8080 and command URL /commands 2020-11-27 11:13:48,468 [myid:] - INFO [main:ServerCnxnFactory@135] - Using org.apache.zookeeper.server.NIOServerCnxnFactory as server connection factory 2020-11-27 11:13:48,475 [myid:] - INFO [main:NIOServerCnxnFactory@673] - Configuring NIO connection handler with 10s sessionless connection timeout, 2 selector thread(s), 24 worker threads, and 64 kB direct buffers. 2020-11-27 11:13:48,481 [myid:] - INFO [main:NIOServerCnxnFactory@686] - binding to port 0.0.0.0/0.0.0.0:2181 2020-11-27 11:13:48,498 [myid:] - INFO [main:ZKDatabase@117] - zookeeper.snapshotSizeFactor = 0.33 2020-11-27 11:13:48,511 [myid:] - INFO [main:FileSnap@83] - Reading snapshot D:IdeaProjectszookeeperSourcedata\version-2\snapshot.0 2020-11-27 11:13:48,527 [myid:] - INFO [main:FileTxnSnapLog@404] - Snapshotting: 0x4 to D:IdeaProjectszookeeperSourcedata\version-2\snapshot.4 2020-11-27 11:13:48,547 [myid:] - INFO [main:ContainerManager@64] - Using checkIntervalMs=60000 maxPerMinute=10000
看重点
2020-11-27 11:13:48,463 [myid:] - INFO [main:Server@399] - Started @882ms
2020-11-27 11:13:48,481 [myid:] - INFO [main:NIOServerCnxnFactory@686] - binding to port 0.0.0.0/0.0.0.0:2181
以源码的方式启动Client
启动日志
Connecting to 127.0.0.1:2181 2020-11-27 11:05:41,288 [myid:] - INFO [main:Environment@109] - Client environment:zookeeper.version=1.0.0-1, built on 2020-11-27 2020-11-27 11:05:41,291 [myid:] - INFO [main:Environment@109] - Client environment:host.name=LAPTOP-JF3RBRRJ 2020-11-27 11:05:41,291 [myid:] - INFO [main:Environment@109] - Client environment:java.version=1.8.0_261 2020-11-27 11:05:41,292 [myid:] - INFO [main:Environment@109] - Client environment:java.vendor=Oracle Corporation 2020-11-27 11:05:41,292 [myid:] - INFO [main:Environment@109] - Client environment:java.home=D:\Program Files (x86)\Java\jdk1.8.0_261\jre 2020-11-27 11:05:41,292 [myid:] - INFO [main:Environment@109] - Client environment:java.class.path=D:\Program Files .......... .......... .......... 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:java.io.tmpdir=C:\Users\artisan\AppData\Local\Temp\ 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:java.compiler=<NA> 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:os.name=Windows 10 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:os.arch=amd64 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:os.version=10.0 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:user.name=artisan 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:user.home=C:\Users\artisan 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:user.dir=D:\IdeaProjects\zookeeperSource 2020-11-27 11:05:41,293 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.free=224MB 2020-11-27 11:05:41,294 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.max=3499MB 2020-11-27 11:05:41,294 [myid:] - INFO [main:Environment@109] - Client environment:os.memory.total=236MB 2020-11-27 11:05:41,296 [myid:] - INFO [main:ZooKeeper@868] - Initiating client connection, connectString=127.0.0.1:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@22d8cfe0 2020-11-27 11:05:41,301 [myid:] - INFO [main:X509Util@79] - Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation 2020-11-27 11:05:41,521 [myid:] - INFO [main:ClientCnxnSocket@237] - jute.maxbuffer value is 4194304 Bytes 2020-11-27 11:05:41,527 [myid:] - INFO [main:ClientCnxn@1653] - zookeeper.request.timeout value is 0. feature enabled= Welcome to ZooKeeper! JLine support is disabled 2020-11-27 11:05:41,539 [myid:127.0.0.1:2181] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1112] - Opening socket connection to server kubernetes.docker.internal/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error) 2020-11-27 11:05:41,540 [myid:127.0.0.1:2181] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@959] - Socket connection established, initiating session, client: /127.0.0.1:50568, server: kubernetes.docker.internal/127.0.0.1:2181 2020-11-27 11:05:41,562 [myid:127.0.0.1:2181] - INFO [main-SendThread(127.0.0.1:2181):ClientCnxn$SendThread@1394] - Session establishment complete on server kubernetes.docker.internal/127.0.0.1:2181, sessionid = 0x1004701bbe50000, negotiated timeout = 30000 WATCHER:: WatchedEvent state:SyncConnected type:None path:null
验证
在客户端执行ZK命令
好了基本完事儿
遇到的问题
缺少Info接口
Info是用来发布的时候生成版本用的，正规的话，需要用 org.apache.zookeeper.version.util.VerGen生成Info ， 我们这里随便搞个就行了
package org.apache.zookeeper.version; /** * @author 小工匠 * @version 1.0 * @description: TODO * @date 2020/11/27 9:54 * @mark: show me the code , change the world */ public interface Info { int MAJOR = 1; int MINOR = 0; int MICRO = 0 ; String QUALIFIER = null; int REVISION = -1; String REVISION_HASH = "1"; String BUILD_DATE = "2020-11-27"; }
缺少org.apache.zookeeper.data.ACL
重新编译 Jute序列化模块
Could not find artifact pl.project13.maven
Could not find artifact pl.project13.maven:git-commit-id-plugin:jar: in aliyunmaven (https://maven.aliyun.com/repository/central)
忽略即可
