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20 package org.apache.hadoop.hbase.zookeeper;
21
22 import java.io.File;
23 import java.io.IOException;
24 import java.io.PrintWriter;
25 import java.net.InetAddress;
26 import java.net.NetworkInterface;
27 import java.net.UnknownHostException;
28 import java.util.ArrayList;
29 import java.util.Enumeration;
30 import java.util.List;
31 import java.util.Properties;
32 import java.util.Map.Entry;
33
34 import org.apache.hadoop.conf.Configuration;
35 import org.apache.hadoop.hbase.HBaseConfiguration;
36 import org.apache.hadoop.net.DNS;
37 import org.apache.hadoop.util.StringUtils;
38 import org.apache.zookeeper.server.ServerConfig;
39 import org.apache.zookeeper.server.ZooKeeperServerMain;
40 import org.apache.zookeeper.server.quorum.QuorumPeerConfig;
41 import org.apache.zookeeper.server.quorum.QuorumPeerMain;
42
43
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47
48
49
50 public class HQuorumPeer {
51
52
53
54
55
56 public static void main(String[] args) {
57 Configuration conf = HBaseConfiguration.create();
58 try {
59 Properties zkProperties = ZKConfig.makeZKProps(conf);
60 writeMyID(zkProperties);
61 QuorumPeerConfig zkConfig = new QuorumPeerConfig();
62 zkConfig.parseProperties(zkProperties);
63 runZKServer(zkConfig);
64 } catch (Exception e) {
65 e.printStackTrace();
66 System.exit(-1);
67 }
68 }
69
70 private static void runZKServer(QuorumPeerConfig zkConfig) throws UnknownHostException, IOException {
71 if (zkConfig.isDistributed()) {
72 QuorumPeerMain qp = new QuorumPeerMain();
73 qp.runFromConfig(zkConfig);
74 } else {
75 ZooKeeperServerMain zk = new ZooKeeperServerMain();
76 ServerConfig serverConfig = new ServerConfig();
77 serverConfig.readFrom(zkConfig);
78 zk.runFromConfig(serverConfig);
79 }
80 }
81
82 private static boolean addressIsLocalHost(String address) {
83 return address.equals("localhost") || address.equals("127.0.0.1");
84 }
85
86 static void writeMyID(Properties properties) throws IOException {
87 long myId = -1;
88
89 Configuration conf = HBaseConfiguration.create();
90 String myAddress = DNS.getDefaultHost(
91 conf.get("hbase.zookeeper.dns.interface","default"),
92 conf.get("hbase.zookeeper.dns.nameserver","default"));
93
94 List<String> ips = new ArrayList<String>();
95
96
97 ips.add(myAddress.contains(".") ?
98 myAddress :
99 StringUtils.simpleHostname(myAddress));
100
101
102 Enumeration<?> nics = NetworkInterface.getNetworkInterfaces();
103 while(nics.hasMoreElements()) {
104 Enumeration<?> rawAdrs =
105 ((NetworkInterface)nics.nextElement()).getInetAddresses();
106 while(rawAdrs.hasMoreElements()) {
107 InetAddress inet = (InetAddress) rawAdrs.nextElement();
108 ips.add(StringUtils.simpleHostname(inet.getHostName()));
109 ips.add(inet.getHostAddress());
110 }
111 }
112
113 for (Entry<Object, Object> entry : properties.entrySet()) {
114 String key = entry.getKey().toString().trim();
115 String value = entry.getValue().toString().trim();
116 if (key.startsWith("server.")) {
117 int dot = key.indexOf('.');
118 long id = Long.parseLong(key.substring(dot + 1));
119 String[] parts = value.split(":");
120 String address = parts[0];
121 if (addressIsLocalHost(address) || ips.contains(address)) {
122 myId = id;
123 break;
124 }
125 }
126 }
127
128
129 properties.setProperty("maxSessionTimeout",
130 conf.get("zookeeper.session.timeout", "180000"));
131
132 if (myId == -1) {
133 throw new IOException("Could not find my address: " + myAddress +
134 " in list of ZooKeeper quorum servers");
135 }
136
137 String dataDirStr = properties.get("dataDir").toString().trim();
138 File dataDir = new File(dataDirStr);
139 if (!dataDir.isDirectory()) {
140 if (!dataDir.mkdirs()) {
141 throw new IOException("Unable to create data dir " + dataDir);
142 }
143 }
144
145 File myIdFile = new File(dataDir, "myid");
146 PrintWriter w = new PrintWriter(myIdFile);
147 w.println(myId);
148 w.close();
149 }
150 }