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<?php
namespace Zotlabs\Lib;
class DB_Upgrade {
public $config_name = '';
public $func_prefix = '';
function __construct($db_revision) {
$this->config_name = 'db_version';
$this->func_prefix = '_';
$build = get_config('system', 'db_version', 0);
if(! intval($build))
$build = set_config('system', 'db_version', $db_revision);
if($build == $db_revision) {
// Nothing to be done.
return;
}
else {
$stored = intval($build);
if(! $stored) {
logger('Critical: check_config unable to determine database schema version');
return;
}
$current = intval($db_revision);
if($stored < $current) {
// The last update we performed was $stored.
// Start at $stored + 1 and continue until we have completed $current
for($x = $stored + 1; $x <= $current; $x ++) {
$s = '_' . $x;
$cls = '\\Zotlabs\Update\\' . $s ;
if(! class_exists($cls)) {
return;
}
// There could be a lot of processes running or about to run.
// We want exactly one process to run the update command.
// So store the fact that we're taking responsibility
// after first checking to see if somebody else already has.
// If the update fails or times-out completely you may need to
// delete the config entry to try again.
Config::Load('database');
if(get_config('database', $s))
break;
set_config('database',$s, '1');
$c = new $cls();
$retval = $c->run();
if($retval != UPDATE_SUCCESS) {
// Prevent sending hundreds of thousands of emails by creating
// a lockfile.
$lockfile = 'store/[data]/mailsent';
if ((file_exists($lockfile)) && (filemtime($lockfile) > (time() - 86400)))
return;
@unlink($lockfile);
//send the administrator an e-mail
file_put_contents($lockfile, $x);
$r = q("select account_language from account where account_email = '%s' limit 1",
dbesc(\App::$config['system']['admin_email'])
);
push_lang(($r) ? $r[0]['account_language'] : 'en');
z_mail(
[
'toEmail' => \App::$config['system']['admin_email'],
'messageSubject' => sprintf( t('Update Error at %s'), z_root()),
'textVersion' => replace_macros(get_intltext_template('update_fail_eml.tpl'),
[
'$sitename' => \App::$config['system']['sitename'],
'$siteurl' => z_root(),
'$update' => $x,
'$error' => sprintf( t('Update %s failed. See error logs.'), $x)
]
)
]
);
//try the logger
logger('CRITICAL: Update Failed: ' . $x);
pop_lang();
}
else {
set_config('database',$s, 'success');
}
}
}
set_config('system', 'db_version', $db_revision);
}
}
}
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