|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace suda\orm; |
|
4
|
|
|
|
|
5
|
|
|
use function in_array; |
|
6
|
|
|
use suda\orm\connection\Connection; |
|
7
|
|
|
use suda\orm\exception\SQLException; |
|
8
|
|
|
use suda\orm\connection\MySQLConnection; |
|
9
|
|
|
use suda\orm\connection\SQLiteConnection; |
|
10
|
|
|
|
|
11
|
|
|
class DataSource |
|
12
|
|
|
{ |
|
13
|
|
|
/** |
|
14
|
|
|
* 读连接 |
|
15
|
|
|
* |
|
16
|
|
|
* @var Connection[] |
|
17
|
|
|
*/ |
|
18
|
|
|
protected $write = []; |
|
19
|
|
|
|
|
20
|
|
|
/** |
|
21
|
|
|
* 写连接 |
|
22
|
|
|
* |
|
23
|
|
|
* @var Connection[] |
|
24
|
|
|
*/ |
|
25
|
|
|
protected $read = []; |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* 当前写数据库 |
|
29
|
|
|
* |
|
30
|
|
|
* @var Connection|null |
|
31
|
|
|
*/ |
|
32
|
|
|
protected $master; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* 当前读数据库 |
|
36
|
|
|
* |
|
37
|
|
|
* @var Connection|null |
|
38
|
|
|
*/ |
|
39
|
|
|
protected $slave; |
|
40
|
|
|
|
|
41
|
|
|
protected static $type = [ |
|
42
|
|
|
'mysql' => MySQLConnection::class, |
|
43
|
|
|
'sqlite' => SQLiteConnection::class, |
|
44
|
|
|
]; |
|
45
|
|
|
|
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* DataSource constructor. |
|
49
|
|
|
* @param Connection[]|Connection $connections |
|
50
|
|
|
*/ |
|
51
|
|
|
public function __construct($connections) |
|
52
|
|
|
{ |
|
53
|
|
|
if (is_array($connections)) { |
|
54
|
|
|
foreach ($connections as $connection) { |
|
55
|
|
|
$this->add($connection); |
|
56
|
|
|
} |
|
57
|
|
|
} else { |
|
58
|
|
|
$this->add($connections); |
|
59
|
|
|
} |
|
60
|
|
|
} |
|
61
|
|
|
|
|
62
|
|
|
/** |
|
63
|
|
|
* 添加连接 |
|
64
|
|
|
* |
|
65
|
|
|
* @param Connection $connection |
|
66
|
|
|
* @return $this |
|
67
|
|
|
*/ |
|
68
|
|
|
public function add(Connection $connection) |
|
69
|
|
|
{ |
|
70
|
|
|
$this->addRead($connection); |
|
71
|
|
|
$this->addWrite($connection); |
|
72
|
|
|
return $this; |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
/** |
|
76
|
|
|
* 添加读连接 |
|
77
|
|
|
* |
|
78
|
|
|
* @param Connection $connection |
|
79
|
|
|
* @return $this |
|
80
|
|
|
*/ |
|
81
|
|
|
public function addRead(Connection $connection) |
|
82
|
|
|
{ |
|
83
|
|
|
if (!in_array($connection, $this->read)) { |
|
84
|
|
|
$this->read[] = $connection; |
|
85
|
|
|
} |
|
86
|
|
|
return $this; |
|
87
|
|
|
} |
|
88
|
|
|
|
|
89
|
|
|
|
|
90
|
|
|
/** |
|
91
|
|
|
* 添加写连接 |
|
92
|
|
|
* |
|
93
|
|
|
* @param Connection $connection |
|
94
|
|
|
* @return $this |
|
95
|
|
|
*/ |
|
96
|
|
|
public function addWrite(Connection $connection) |
|
97
|
|
|
{ |
|
98
|
|
|
if (!in_array($connection, $this->write)) { |
|
99
|
|
|
$this->write[] = $connection; |
|
100
|
|
|
} |
|
101
|
|
|
return $this; |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
|
|
/** |
|
105
|
|
|
* 获取写连接 |
|
106
|
|
|
* |
|
107
|
|
|
* @return Connection |
|
108
|
|
|
*/ |
|
109
|
|
|
public function read(): Connection |
|
110
|
|
|
{ |
|
111
|
|
|
$this->selectReadConnection(); |
|
112
|
|
|
return $this->slave; |
|
113
|
|
|
} |
|
114
|
|
|
|
|
115
|
|
|
/** |
|
116
|
|
|
* 获取读连接 |
|
117
|
|
|
* |
|
118
|
|
|
* @return Connection |
|
119
|
|
|
*/ |
|
120
|
|
|
public function write(): Connection |
|
121
|
|
|
{ |
|
122
|
|
|
$this->selectWriteConnection(); |
|
123
|
|
|
return $this->master; |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
|
|
/** |
|
127
|
|
|
* 创建连接 |
|
128
|
|
|
* |
|
129
|
|
|
* @param string $type |
|
130
|
|
|
* @param array $config |
|
131
|
|
|
* @param string|null $name |
|
132
|
|
|
* @return Connection |
|
133
|
|
|
* @throws SQLException |
|
134
|
|
|
*/ |
|
135
|
|
|
public static function new(string $type, array $config, ?string $name = null): Connection |
|
136
|
|
|
{ |
|
137
|
|
|
if (array_key_exists($type, static::$type)) { |
|
138
|
|
|
return new static::$type[$type]($config, $name); |
|
139
|
|
|
} else { |
|
140
|
|
|
throw new SQLException(sprintf('no connection type of %s', $type)); |
|
141
|
|
|
} |
|
142
|
|
|
} |
|
143
|
|
|
|
|
144
|
|
|
/** |
|
145
|
|
|
* 读数据库选择 |
|
146
|
|
|
* |
|
147
|
|
|
* @return void |
|
148
|
|
|
*/ |
|
149
|
|
|
protected function selectReadConnection() |
|
150
|
|
|
{ |
|
151
|
|
|
$postion = mt_rand(0, count($this->read) - 1); |
|
152
|
|
|
$this->slave = $this->read[$postion]; |
|
153
|
|
|
} |
|
154
|
|
|
|
|
155
|
|
|
/** |
|
156
|
|
|
* 写数据库选择 |
|
157
|
|
|
* |
|
158
|
|
|
* @return void |
|
159
|
|
|
*/ |
|
160
|
|
|
protected function selectWriteConnection() |
|
161
|
|
|
{ |
|
162
|
|
|
if ($this->master === null) { |
|
163
|
|
|
$position = mt_rand(0, count($this->write) - 1); |
|
164
|
|
|
$this->master = $this->write[$position]; |
|
165
|
|
|
} |
|
166
|
|
|
} |
|
167
|
|
|
} |
|
168
|
|
|
|
dxkite /
suda
