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<?php
/**
* If your websites use PHP-FPM and you have incron installed, you can use this plugin to automatically add incron
* configuration which will take care of reloading the php-fpm pool when the file /private/php-fpm.reload is touched.
* Projects which use deployment tools can use this to reload php-fpm to clear the opcache at deploy time, without
* requiring superuser privileges.
*/
class incron_plugin {
var $plugin_name = 'incron_plugin';
var $class_name = 'incron_plugin';
function onInstall() {
global $conf;
if ($conf['services']['web'] !== true) {
return false;
}
if ($this->isIncronAvailable() === false) {
return false;
}
return true;
}
function onLoad() {
global $app;
$app->plugins->registerEvent('web_domain_insert', $this->plugin_name, 'incronInsert');
$app->plugins->registerEvent('web_domain_update', $this->plugin_name, 'incronUpdate');
$app->plugins->registerEvent('web_domain_delete', $this->plugin_name, 'incronDelete');
}
function incronInsert($eventName, $data) {
$this->setup($data['new']);
}
function incronUpdate($eventName, $data) {
global $app;
if ($data['new']['document_root'] === $data['old']['document_root']) {
$app->log('Document root unchanged. Not updating incron configuration.', LOGLEVEL_DEBUG);
return;
}
$this->teardown($data['old']);
$this->setup($data['new']);
}
function incronDelete($eventName, $data) {
$this->teardown($data['old']);
}
private function setup($data)
{
$triggerFile = $this->getTriggerFilePath($data['document_root']);
$this->createTriggerFile($triggerFile, $data['system_user'], $data['system_group']);
$this->createIncronConfiguration(
$triggerFile,
$data['system_user'],
$data['fastcgi_php_version']
);
$this->restartIncronService();
}
private function teardown($data) {
$this->deleteIncronConfiguration($data['system_user']);
$this->deleteTriggerFile($this->getTriggerFilePath($data['document_root']));
$file = sprintf('/etc/incron.d/%s.conf', $data['system_user']);
@unlink($file);
$this->restartIncronService();
}
private function isIncronAvailable() {
exec('which incrond', $output, $retval);
return $retval === 0;
}
private function createIncronConfiguration($triggerFile, $systemUser, $fastcgiPhpVersion) {
global $app;
$phpService = $this->getPhpService($fastcgiPhpVersion);
$configFile = $this->getIncronConfigurationFilePath($systemUser);
$content = sprintf(
'%s %s %s',
$triggerFile,
'IN_CLOSE_WRITE',
$app->system->getinitcommand($phpService, 'reload')
);
file_put_contents($configFile, $content);
$app->log(sprintf('Created incron configuration "%s"', $configFile), LOGLEVEL_DEBUG);
}
private function createTriggerFile($triggerFile, $systemUser, $systemGroup) {
global $app;
if (!file_exists($triggerFile)) {
exec(sprintf('touch %s', $triggerFile));
}
exec(sprintf('chown %s:%s %s', $systemUser, $systemGroup, $triggerFile));
$app->log(sprintf('Ensured incron trigger file "%s"', $triggerFile), LOGLEVEL_DEBUG);
}
private function deleteIncronConfiguration($systemUser) {
global $app;
$configFile = $this->getIncronConfigurationFilePath($systemUser);
unlink($configFile);
$app->log(sprintf('Deleted incron configuration "%s"', $configFile), LOGLEVEL_DEBUG);
}
private function deleteTriggerFile($triggerFile) {
global $app;
unlink($triggerFile);
$app->log(sprintf('Deleted incron trigger file "%s"', $triggerFile), LOGLEVEL_DEBUG);
}
private function getTriggerFilePath($documentRoot) {
return sprintf('%s/private/php-fpm.reload', $documentRoot);
}
private function getIncronConfigurationFilePath($systemUser) {
return sprintf('/etc/incron.d/%s.conf', $systemUser);
}
private function getPhpService($fastcgiPhpVersion) {
$phpInfo = explode(':', $fastcgiPhpVersion);
if (empty($phpInfo)) {
return null;
}
$phpService = $phpInfo[1];
if (empty($phpService)) {
return null;
}
return $phpService;
}
private function restartIncronService() {
global $app;
exec($app->system->getinitcommand('incrond', 'restart'));
}
}