public function run()
{
$conf = Config::get('sharding');
$shard = new Adapters\MysqlShard($conf);
$strategy = new Strategy\LinearStrategy(null, self::name, $shard->getConfig());
$name = self::name;
$pos = strlen(self::name) + 2;
$sql = "SELECT substr( TABLE_NAME, {$pos}) AS num, TABLE_ROWS as `count` \n FROM information_schema.TABLES \n WHERE TABLE_SCHEMA \n LIKE '{$name}_%' \n AND TABLE_NAME REGEXP '^({$name}_)[0-9]+\$'";
$tables = [];
for ($cnn_id = 0; $cnn_id < $shard->getInstanceCount(); $cnn_id++) {
try {
$mysql = $shard->getConnectionById($cnn_id);
} catch (Exception $e) {
echo $e->getMessage();
}
$res = $mysql->query($sql);
while (($row = $res->fetch_assoc()) != null) {
$tables[$row['num']] = $row['count'];
}
}
$sum = count($tables);
$fillTables = 0;
$startTabId = 0;
foreach ($tables as $tab_id => $count) {
if ($count > 0) {
$fillTables++;
}
if ($tab_id > $startTabId) {
$startTabId = (int) $tab_id;
}
}
if ($sum - $fillTables > self::emptyTables) {
$out = sprintf('fulling tables %d from %d %s', $fillTables, $sum, date('Y-m-d'));
echo $out, PHP_EOL;
exit;
}
$out = sprintf('generate: full tables %d from %d', $fillTables, $sum);
$startTabId++;
echo 'generate tables:', PHP_EOL;
// $shard->setNoExec();
$table_names = '';
for ($i = $startTabId; $i < $startTabId + self::count; $i++) {
$table_names .= self::name . '_' . $i . PHP_EOL;
$strategy->setId(Strategy\LinearStrategy::MAX_RECORD_COUNT * $i + 1);
$table = Generator\LinesGenerator::getCreateTableSQL($i);
$shard->query($table, $strategy);
// echo $shard->getQuery(), PHP_EOL,PHP_EOL;
}
echo $table_names, PHP_EOL;
}
/**
* чистка БД
* шарды 3 и 4 5 на разных физ серверах (коннекциях)
*/
private function dbInit()
{
$this->sharding->setNoExec(false);
// делаем запрос исполняемым
$strategy = new LinearStrategy(null, 'lines', $this->sharding->getConfig());
$strategy->setId(899999890);
$shard_id = 8;
$this->sharding->query("DROP TABLE %db.lines_%t", $strategy);
$sql = LinesGenerator::getCreateTableSQL($shard_id);
$this->sharding->query($sql, $strategy);
$strategy->setId(499999890);
$shard_id = 4;
$this->sharding->query("DROP TABLE %db.lines_%t", $strategy);
$sql = LinesGenerator::getCreateTableSQL($shard_id);
$this->sharding->query($sql, $strategy);
$strategy->setId(999999890);
$shard_id = 9;
$this->sharding->query("DROP TABLE %db.lines_%t", $strategy);
$sql = LinesGenerator::getCreateTableSQL($shard_id);
$this->sharding->query($sql, $strategy);
}
<?php
require '../src/autoload.php';
use MysqlShard\Adapters\MysqlShard;
use MysqlShard\Tools\Config;
use MysqlShard\Strategy\LinearStrategy;
use MysqlShard\Generator\LinesGenerator;
$shard = new MysqlShard();
$strategy = new LinearStrategy(null, 'lines', $shard->getConfig());
// create 10 tables for shards 0..9
for ($i = 0; $i < 10; $i++) {
$query = LinesGenerator::getCreateTableSQL($i);
$strategy->setId($i * LinearStrategy::MAX_RECORD_COUNT + 1);
$shard->query($query, $strategy);
}
<?php
require '../src/autoload.php';
use MysqlShard\Adapters\MysqlShard;
use MysqlShard\Tools\Config;
use MysqlShard\Strategy\LinearStrategy;
use MysqlShard\Generator\LinesGenerator;
$shard = new MysqlShard();
$strategy = new LinearStrategy(null, 'lines', $shard->getConfig());
for ($i = 0; $i < 10; $i++) {
$query = LinesGenerator::getDropTableSQL($i);
$strategy->setId($i * LinearStrategy::MAX_RECORD_COUNT + 1);
$shard->query($query, $strategy);
}
