/**
* Verify integrity of the site, automatically taking any actions to restore
* it if broken.
*
* Return values:
* 0 Nothing done (everything is probably OK).
* -1 Error (the error has been logged through trigger_error).
* 1 gitblog cache was updated.
* 2 gitdir is missing and need to be created (git init).
* 3 upgrade performed
*/
static function verify_integrity()
{
$r = 0;
if (!is_dir(gb::$site_dir . '/.git/info/gitblog')) {
if (!is_dir(gb::$site_dir . '/.git')) {
# 2: no repo/not initialized
return 2;
}
# 1: gitblog cache updated
gb_maint::sync_site_state();
GBRebuilder::rebuild(true);
return 1;
}
# load site.json
$r = self::load_site_state();
# check site state
if ($r === false || !isset(gb::$site_state['url']) || !gb::$site_state['url'] || gb::$site_state['url'] !== gb::$site_url && strpos(gb::$site_url, '://localhost') === false && strpos(gb::$site_url, '://127.0.0.1') === false) {
return gb_maint::sync_site_state() === false ? -1 : 0;
} elseif (gb::$site_state['version'] !== gb::$version) {
return gb_maint::upgrade(gb::$site_state['version']) ? 0 : -1;
} elseif (gb::$site_state['posts_pagesize'] !== gb::$posts_pagesize) {
gb_maint::sync_site_state();
GBRebuilder::rebuild(true);
return 1;
}
return 0;
}
static function perform($from, $to)
{
$from = gb::version_parse($from);
$to = gb::version_parse($to);
$froms = gb::version_format($from);
$tos = gb::version_format($to);
if ($from === $to) {
return null;
}
$is_upgrade = $from < $to;
$stages = self::build_stages($from, $to);
gb::log('%s gitblog %s -> %s in %d stages', $is_upgrade ? 'upgrading' : 'downgrading', $froms, $tos, count($stages));
# don't break on client abort
ignore_user_abort(true);
foreach ($stages as $v => $stagefunc) {
$prevvs = gb::version_format($v > 0 ? $v - 1 : $v);
gb::log('%s -> %s (%s)', $prevvs, gb::version_format($v), $stagefunc[1], $v);
# write prev version to site.json so next run will take off where we crashed, if we crash.
$orig_v = gb::$version;
gb::$version = $prevvs;
gb_maint::sync_site_state();
gb::$version = $orig_v;
$stages[$v] = call_user_func($stagefunc, $from, $to);
}
gb_maint::sync_site_state();
return $stages;
}