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application/common/service/Database.php
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182
application/common/service/Database.php
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<?php
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// +------------------------------------------------+
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// |http://www.cjango.com |
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// +------------------------------------------------+
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// | 修复BUG不是一朝一夕的事情，等我喝醉了再说吧！ |
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// +------------------------------------------------+
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// | Author: 小陈叔叔 <Jason.Chen> |
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// +------------------------------------------------+
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namespace app\common\service;
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use think\Config;
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use think\Loader;
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use think\Session;
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use tools\Format;
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class Database extends _Init
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{
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/**
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* 获取表信息
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* @return array
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*/
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public static function getTables()
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{
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$list = array_map('array_change_key_case', Loader::db()->query('SHOW TABLE STATUS'));
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foreach ($list as $key => $value) {
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$list[$key]['data_length'] = Format::byte($value['data_length']);
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$list[$key]['index_length'] = Format::byte($value['index_length']);
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}
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return $list;
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}
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/**
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* 备份数据库
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* @param [type] $tables [description]
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* @param [type] $id [description]
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* @param [type] $start [description]
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* @return [type] [description]
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*/
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public static function backup($tables = null, $id = null, $start = null)
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{
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if (IS_POST && !empty($tables) && is_array($tables)) {
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//初始化
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$config = Config::get('backdata');
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// 检查是否有正在执行的任务
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if (!is_writeable($config['path'])) {
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return '备份目录不存在或不可写，请检查后重试！';
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}
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$lock = "{$config['path']}backup.lock";
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if (is_file($lock)) {
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return '检测到一个任务正在执行，请稍后再试！';
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} else {
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file_put_contents($lock, time()); //创建锁文件
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}
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Session::set('backup_config', $config);
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//生成备份文件信息
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$file = array(
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'name' => date('Ymd-His', time()),
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'part' => 1,
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);
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Session::set('backup_file', $file);
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//缓存要备份的表
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Session::set('backup_tables', $tables);
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//创建备份文件
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$Database = new \tools\Database($file, $config);
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if (false !== $Database->create()) {
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Logs::write('备份数据库', ['table' => $tables]);
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return [
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'msg' => '初始化成功！',
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'data' => ['id' => 0, 'start' => 0],
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];
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} else {
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return '初始化失败，备份文件创建失败！';
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}
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} elseif (IS_GET && is_numeric($id) && is_numeric($start)) {
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//备份数据
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$tables = Session::get('backup_tables');
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//备份指定表
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$Database = new \tools\Database(Session::get('backup_file'), Session::get('backup_config'));
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$start = $Database->backup($tables[$id], $start);
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if (false === $start) {
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return '备份出错！';
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} elseif (0 === $start) {
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//下一表
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if (isset($tables[++$id])) {
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return [
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'msg' => '备份完成！',
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'data' => ['id' => $id, 'start' => 0],
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];
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} else {
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//备份完成，清空缓存
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unlink(Session::get('backup_config.path') . 'backup.lock');
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Session::delete('backup_tables');
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Session::delete('backup_file');
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Session::delete('backup_config');
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return [
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'msg' => '备份完成！',
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'data' => '',
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];
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}
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} else {
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$rate = floor(100 * ($start[0] / $start[1]));
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return [
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'msg' => '"正在备份..({$rate}%)"',
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'data' => ['id' => $id, 'start' => $start[0]],
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];
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}
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}
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}
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/**
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* [del description]
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* @param [type] $time [description]
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* @return [type] [description]
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*/
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public static function del($time)
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{
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$path = [];
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if (is_array($time)) {
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foreach ($time as $value) {
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$name = date('Ymd-His', $value) . '-*.sql*';
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$file = Config::get('backdata.path') . $name;
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$path = array_merge($path, glob($file));
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}
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} else {
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$name = date('Ymd-His', $time) . '-*.sql*';
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$file = Config::get('backdata.path') . $name;
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$path = glob($file);
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}
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try {
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array_map("unlink", $path);
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Logs::write('删除备份文件', ['files' => $path]);
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return true;
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} catch (\Exception $e) {
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return '备份文件删除失败，请检查权限！';
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}
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}
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/**
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* 备份文件卷列表
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* @return array
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*/
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public static function backupList()
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{
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$path = Config::get('backdata.path');
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$list = [];
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if (is_dir($path)) {
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$flag = \FilesystemIterator::KEY_AS_FILENAME;
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$glob = new \FilesystemIterator($path, $flag);
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$list = [];
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foreach ($glob as $name => $file) {
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if (preg_match('/^\d{8,8}-\d{6,6}-\d+\.sql(?:\.gz)?$/', $name)) {
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$name = sscanf($name, '%4s%2s%2s-%2s%2s%2s-%d');
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$date = "{$name[0]}-{$name[1]}-{$name[2]}";
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$time = "{$name[3]}:{$name[4]}:{$name[5]}";
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$part = $name[6];
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if (isset($list["{$date} {$time}"])) {
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$info = $list["{$date} {$time}"];
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$info['part'] = max($info['part'], $part);
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$info['size'] += $file->getSize();
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} else {
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$info['part'] = $part;
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$info['size'] = $file->getSize();
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}
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$extension = strtoupper(pathinfo($file->getFilename(), PATHINFO_EXTENSION));
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$info['compress'] = ($extension === 'SQL') ? '-' : $extension;
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$info['time'] = strtotime("{$date} {$time}");
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$list["{$date} {$time}"] = $info;
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}
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krsort($list);
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}
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}
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array_walk($list, function ($val, $key) use (&$list) {
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$list[$key]['size'] = Format::byte($val['size']);
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});
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return $list;
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}
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}
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