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| 1 | +package applications; |
| 2 | +/** |
| 3 | +* The Application2 program implements an application that: |
| 4 | +- Initialize a server instance (S1) |
| 5 | +- Start S1 in a separate thread as replication master, passing the required additional options |
| 6 | +- Initialize another server instance (S2) |
| 7 | +- Start S2 in a separate thread as replication slave, passing the required additional options |
| 8 | +- Set the master (S1) configuration in the slave (S2) |
| 9 | +- Start replication in the slave (S2) |
| 10 | +- Create a table in the master (S1) |
| 11 | +- Wait 2 seconds (for replication to occur) |
| 12 | +- Check that the table exists in the slave (S2) |
| 13 | +- Stop S2 and S1 |
| 14 | +* |
| 15 | +* @author Wagner Jose Franchin |
| 16 | +* @version 1.0 |
| 17 | +* @since 2015年03月28日 |
| 18 | +*/ |
| 19 | + |
| 20 | +import java.io.File; |
| 21 | +import java.io.IOException; |
| 22 | +import java.sql.*; |
| 23 | + |
| 24 | +import mysqlserver.*; |
| 25 | + |
| 26 | +public class Application2 { |
| 27 | + |
| 28 | + private static String connectionStringMaster; |
| 29 | + private static String connectionStringSlave; |
| 30 | + private static String username; |
| 31 | + private static String password; |
| 32 | + |
| 33 | + private static Connection connectionMaster, connectionSlave; |
| 34 | + private static Statement commandMaster, commandSlave; |
| 35 | + private static ResultSet data; |
| 36 | + |
| 37 | + private static final String USER_TABLE = "PERSON"; |
| 38 | + |
| 39 | + public static void main(String[] args) throws SQLException, InterruptedException, IOException { |
| 40 | + |
| 41 | + // Change below path to point to your MySQL binaries |
| 42 | + File baseDir = new File(Utils.MYSQL_PATH); |
| 43 | + |
| 44 | + File installDirMaster = new File("bdApp2Master"); |
| 45 | + File installDirSlave = new File("bdApp2Slave"); |
| 46 | + |
| 47 | + int master_port = 3306; |
| 48 | + int slave_port = 3307; |
| 49 | + |
| 50 | + connectionStringMaster = "jdbc:mysql://localhost:" + master_port + "/mysql" + Utils.CONNECT_PROPS; |
| 51 | + connectionStringSlave = "jdbc:mysql://localhost:" + slave_port + "/mysql" + Utils.CONNECT_PROPS; |
| 52 | + |
| 53 | + username = "root"; |
| 54 | + password = ""; |
| 55 | + |
| 56 | + final MySQLServer s1 = new MasterMySQLServer(baseDir, installDirMaster, master_port, 1, "mysql-bin"); |
| 57 | + final MySQLServer s2 = new SlaveMySQLServer(baseDir, installDirSlave, slave_port, 2); |
| 58 | + |
| 59 | + try { |
| 60 | + |
| 61 | + /*Initialize a server instance (S1) |
| 62 | + Start S1 in a separate thread as replication master, passing the required additional options*/ |
| 63 | + initAndStarServer(s1); |
| 64 | + |
| 65 | + /*Initialize a server instance (S2) |
| 66 | + Start S2 in a separate thread as replication master, passing the required additional options*/ |
| 67 | + initAndStarServer(s2); |
| 68 | + |
| 69 | + //Test to verify if the server instances are ready |
| 70 | + while (s1.ping() != 0 || s2.ping() != 0) { |
| 71 | + System.out.println("wait..."); |
| 72 | + Thread.sleep(500); |
| 73 | + } |
| 74 | + |
| 75 | + //Create DB connections |
| 76 | + connectionMaster = DriverManager.getConnection(connectionStringMaster, username, password); |
| 77 | + connectionSlave = DriverManager.getConnection(connectionStringSlave, username, password); |
| 78 | + |
| 79 | + commandMaster = connectionMaster.createStatement(); |
| 80 | + commandSlave = connectionSlave.createStatement(); |
| 81 | + |
| 82 | + //Set the master (S1) configuration in the slave (S2) |
| 83 | + commandSlave.execute("CHANGE MASTER TO MASTER_HOST='localhost', MASTER_PORT=" + master_port + ", MASTER_USER='" + username + "';"); |
| 84 | + |
| 85 | + //Start replication in the slave (S2) |
| 86 | + commandSlave.execute("START SLAVE;"); |
| 87 | + |
| 88 | + testReplication(); |
| 89 | + |
| 90 | + } |
| 91 | + finally { |
| 92 | + |
| 93 | + if (data != null) |
| 94 | + data.close(); |
| 95 | + |
| 96 | + if (commandMaster != null) |
| 97 | + commandMaster.close(); |
| 98 | + if (commandSlave != null) |
| 99 | + commandSlave.close(); |
| 100 | + |
| 101 | + if (connectionMaster != null) |
| 102 | + connectionMaster.close(); |
| 103 | + if (connectionSlave != null) |
| 104 | + connectionSlave.close(); |
| 105 | + |
| 106 | + //Stop S2 |
| 107 | + s2.stop(); |
| 108 | + System.out.println("S2 stopped!"); |
| 109 | + |
| 110 | + //Stop S1 |
| 111 | + s1.stop(); |
| 112 | + System.out.println("S1 stopped!"); |
| 113 | + } |
| 114 | + } |
| 115 | + |
| 116 | + private static void initAndStarServer(MySQLServer s) throws IOException, InterruptedException { |
| 117 | + |
| 118 | + //Server instance initialize |
| 119 | + if (s.init() == 0) { |
| 120 | + System.out.println("Server instance initialized!"); |
| 121 | + } |
| 122 | + |
| 123 | + //Start S in a new thread |
| 124 | + new Thread(new RunnableServer(s)).start(); |
| 125 | + } |
| 126 | + |
| 127 | + /** |
| 128 | + * Method to run the replication test |
| 129 | + * |
| 130 | + * @throws SQLException |
| 131 | + * @throws InterruptedException |
| 132 | + */ |
| 133 | + private static void testReplication() throws SQLException, InterruptedException { |
| 134 | + |
| 135 | + System.out.println("\nTEST Replication"); |
| 136 | + |
| 137 | + try { |
| 138 | + //Check that the table exists in the slave (S2) |
| 139 | + executeQuery(commandSlave, "DESCRIBE " + USER_TABLE + ";", Kind.SLAVE); |
| 140 | + }catch(Exception e) { |
| 141 | + System.err.println(e.getMessage()); |
| 142 | + } |
| 143 | + |
| 144 | + //Create a table in the master (S1) |
| 145 | + String command = "CREATE TABLE " + USER_TABLE + " (ID INT NOT NULL, NAME VARCHAR(20), LASTNAME VARCHAR(20));"; |
| 146 | + commandMaster.execute(command); |
| 147 | + System.out.println("[" + Kind.MASTER.getName() + "]# " + command); |
| 148 | + |
| 149 | + //Check that the table exists in the slave (S1) |
| 150 | + executeQuery(commandMaster, "DESCRIBE " + USER_TABLE + ";", Kind.MASTER); |
| 151 | + |
| 152 | + //Wait 2 seconds (for replication) |
| 153 | + Thread.sleep(2000); |
| 154 | + |
| 155 | + //Check that the table exists in the slave (S2) |
| 156 | + executeQuery(commandSlave, "DESCRIBE " + USER_TABLE + ";", Kind.SLAVE); |
| 157 | + } |
| 158 | + |
| 159 | + /** |
| 160 | + * Method to execute queries |
| 161 | + * |
| 162 | + * @param command |
| 163 | + * @param script |
| 164 | + * @param kind |
| 165 | + * @throws SQLException |
| 166 | + */ |
| 167 | + private static void executeQuery(Statement command, String script, Kind kind) throws SQLException { |
| 168 | + System.out.println("\n[" + kind.getName() + "]# " + script); |
| 169 | + data = command.executeQuery(script); |
| 170 | + |
| 171 | + while (data.next()) { |
| 172 | + System.out.println(data.getString(1) + " " + data.getString(2) + " " + data.getString(3)); |
| 173 | + } |
| 174 | + System.out.println("*****************************"); |
| 175 | + } |
| 176 | + |
| 177 | + private enum Kind { |
| 178 | + MASTER("Master"), SLAVE("Slave"); |
| 179 | + |
| 180 | + private String name; |
| 181 | + private Kind(String name) { |
| 182 | + this.name = name; |
| 183 | + } |
| 184 | + public String getName() { |
| 185 | + return name; |
| 186 | + } |
| 187 | + } |
| 188 | +} |
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