MySQL 使用 HandlerSocket 实现 NOSQL 功能

一、安装
1、下载 mysql-5.1.54.tar.gz 解压至 /root/mysql/mysql-5.1.54 目录
2、下载 ahiguti-HandlerSocket-Plugin-for-MySQL-1.0.6-94-g98b14c3.tar.gz 解压至 /root/mysql/ahiguti-HandlerSocket-Plugin-for-MySQL-98b14c3 目录
3、以动态编译的形式编译安装 mysql 到 /usr/local/mysql5.1
4、编译 HandlerSocket 插件，在 /root/mysql/ahiguti-HandlerSocket-Plugin-for-MySQL-98b14c3 目录
# ./autogen.sh
# ./configure --with-mysql-source=/root/mysql/mysql-5.1.54 --with-mysql-bindir=/usr/local/mysql5.1/bin --with-mysql-plugindir=/usr/local/mysql5.1/lib/mysql/plugin
with-mysql-source 表示MySQL源代码目录，with-mysql-bindir 表示MySQL二进制可执行文件目录（也就是 mysql_config 所在目录），with-mysql-plugindir 表示MySQL插件目录
如果不清楚这个目录在哪，可以按如下方法查询：
mysql> SHOW VARIABLES LIKE 'plugin%';
+---------------+-----------------------+
| Variable_name | Value                 |
+---------------+-----------------------+
| plugin_dir    | /usr/lib/mysql/plugin |
+---------------+-----------------------+
编译和安装
# make && make install

二、配置 MySQL
# vi /etc/my.cnf
[mysqld]
loose_handlersocket_port = 9998
# the port number to bind to (for read requests)
loose_handlersocket_port_wr = 9999
# the port number to bind to (for write requests)
loose_handlersocket_threads = 16
# the number of worker threads (for read requests)
loose_handlersocket_threads_wr = 1
# the number of worker threads (for write requests)
open_files_limit = 65535
# to allow handlersocket accept many concurren connections, make open_files_limit as large as possible.

激活HandlerSocket插件，在客户端命令执行
mysql> install plugin handlersocket soname 'handlersocket.so';
查看 handlersocket 进程
mysql>  show processlist
+----+-------------+-----------------+---------------+---------+------+-------------------------------------------+------------------+
| Id | User        | Host            | db            | Command | Time | State                                     | Info             |
+----+-------------+-----------------+---------------+---------+------+-------------------------------------------+------------------+
|  1 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  2 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  3 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  4 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  5 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  6 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  7 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  8 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
|  9 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 10 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 11 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 12 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 13 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 14 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 15 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 16 | system user | connecting host | NULL          | Connect | NULL | handlersocket: mode=rd, 0 conns, 0 active | NULL             |
| 17 | system user | connecting host | handlersocket | Connect | NULL | handlersocket: mode=wr, 0 conns, 0 active | NULL             |

查看系统进程占用的端口
# lsof -i :9998
COMMAND  PID  USER   FD   TYPE DEVICE SIZE NODE NAME
mysqld  2731 mysql   11u  IPv4 571386       TCP *:9998 (LISTEN)
# lsof -i :9999
COMMAND  PID  USER   FD   TYPE DEVICE SIZE NODE NAME
mysqld  2731 mysql   29u  IPv4 571403       TCP *:9999 (LISTEN)


三、测试使用

在数据库 test 创建测试表
CREATE TABLE `user` ( 
`user_id` INT(10) UNSIGNED NOT NULL, 
`user_name` VARCHAR(50) DEFAULT NULL, 
`user_email` VARCHAR(255) DEFAULT NULL, 
`created` DATETIME DEFAULT NULL, 
PRIMARY KEY (`user_id`), 
KEY `INDEX_01` (`user_name`) 
) ENGINE=INNODB 

插入测试数据
INSERT INTO USER VALUES(1, "John", "[e-mail]", CURRENT_TIMESTAMP); 
INSERT INTO USER VALUES(2, "Kevin", "[e-mail]", CURRENT_TIMESTAMP); 
INSERT INTO USER VALUES(3, "Dino", "[e-mail]", CURRENT_TIMESTAMP); 

编译 Perl 客户端，在 /root/mysql/ahiguti-HandlerSocket-Plugin-for-MySQL-98b14c3 目录执行
# ./autogen.sh
# ./configure --disable-handlersocket-server
# make && make install
# cd perl-Net-HandlerSocket
# perl Makefile.PL
# make && make install

perl 程序文件：

#!/usr/bin/perl  
  
use strict;  
use warnings;  
use Net::HandlerSocket;  
  
#1. establishing a connection  
my $args = { host => 'localhost', port => 9998 };  
my $hs = new Net::HandlerSocket($args);  
  
#2. initializing an index so that we can use in main logics.  
# MySQL tables will be opened here (if not opened)  
my $res = $hs->open_index(0, 'test', 'user', 'INDEX_01', 'user_name,user_email,created');  
die $hs->get_error() if $res != 0;  
  
#3. main logic  
#fetching rows by id  
#execute_single (index id, cond, cond value, max rows, offset)  
$res = $hs->execute_single(0, '=', [ 'kevin' ], 1, 0);  
die $hs->get_error() if $res->[0] != 0;  
shift(@$res);  
for (my $row = 0; $row < 1; ++$row) {  
  my $user_name= $res->[$row + 0];  
  my $user_email= $res->[$row + 1];  
  my $created= $res->[$row + 2];  
  print "$user_name\t$user_email\t$created\n";  
}  
  
#4. closing the connection  
$hs->close();  

下载 hs4j-0.1 软件包。
Java 程序文件：

import java.sql.ResultSet;

import com.google.code.hs4j.HSClient;
import com.google.code.hs4j.HSClientBuilder;
import com.google.code.hs4j.IndexSession;
import com.google.code.hs4j.impl.HSClientBuilderImpl;

public class TestNoSQL {
	public static void main(String[] args) throws Exception {
		HSClientBuilder hscb = new HSClientBuilderImpl();
		hscb.setServerAddress("10.10.10.2", 9999);
		HSClient hsc = hscb.build();
		IndexSession is = hsc.openIndexSession(1,"test", "user", "INDEX_01", new String[]{"user_name","user_email","created"});
		// 插入
		is.insert(new String[]{"ezerg", "[e-mail]", "2011-10-12 13:04:33"});
		final String[] keys = { "ezerg"};
		// 查询
		ResultSet rs = is.find(keys);
		while(rs.next()) {
			System.out.println("name="+rs.getString(1));
			System.out.println("email="+rs.getString(2));
		}
		// 删除
		// is.delete(keys);
		// 更新
		// is.update(keys, new String[] { "ezerg", "[e-mail]", "2011-10-12 13:04:33" }, FindOperator.EQ); 
		// 关闭连接
		hsc.shutdown();
	}
}