<?php
/**
* This is one giant class containing various functions that will generate
* required config files, daemon instances and more, mostly through the Taskmanager.
* Most function *should* only actually do something if it is required to do so.
* eg. a "launchSomething" function should only launch something if it isn't already
* running. Checking if something is running can happen in that very function, or in
* a task that the function is calling.
*/
class Trigger
{
/**
* Compile iPXE pxelinux menu. Needs to be done whenever the server's IP
* address changes.
*
* @param boolean $force force recompilation even if it seems up to date
* @return boolean|string false if launching task failed, task-id otherwise
*/
public static function ipxe()
{
$data = Property::getBootMenu();
$data['ipaddress'] = Property::getServerIp();
$task = Taskmanager::submit('CompileIPxe', $data);
if (!isset($task['id']))
return false;
return $task['id'];
}
/**
* Try to automatically determine the primary IP address of the server.
* This only works if the server has either one public IPv4 address (and potentially
* one or more non-public addresses), or one private address.
*
* @return boolean true if current configured IP address is still valid, or if a new address could
* successfully be determined, false otherwise
*/
public static function autoUpdateServerIp()
{
$task = Taskmanager::submit('LocalAddressesList');
if ($task === false)
return false;
$task = Taskmanager::waitComplete($task, 10000);
if (!isset($task['data']['addresses']) || empty($task['data']['addresses']))
return false;
$serverIp = Property::getServerIp();
$publicCandidate = 'none';
$privateCandidate = 'none';
foreach ($task['data']['addresses'] as $addr) {
if (substr($addr['ip'], 0, 4) === '127.' || preg_match('/^\d+\.\d+\.\d+\.\d+$/', $addr['ip']) !== 1)
continue;
if ($addr['ip'] === $serverIp)
return true;
if (Util::isPublicIpv4($addr['ip'])) {
if ($publicCandidate === 'none')
$publicCandidate = $addr['ip'];
else
$publicCandidate = 'many';
} else {
if ($privateCandidate === 'none')
$privateCandidate = $addr['ip'];
else
$privateCandidate = 'many';
}
}
if ($publicCandidate !== 'none' && $publicCandidate !== 'many') {
Property::setServerIp($publicCandidate, true);
return true;
}
if ($privateCandidate !== 'none' && $privateCandidate !== 'many') {
Property::setServerIp($privateCandidate, true);
return true;
}
return false;
}
/**
* Launch all ldadp instances that need to be running.
*
* @param int $exclude if not NULL, id of config module NOT to start
* @param string $parent if not NULL, this will be the parent task of the launch-task
* @return boolean|string false on error, id of task otherwise
*/
public static function ldadp($exclude = NULL, $parent = NULL)
{
// TODO: Fetch list from ConfigModule_AdAuth (call loadDb first)
$res = Database::simpleQuery("SELECT DISTINCT moduleid FROM configtgz_module"
. " INNER JOIN configtgz_x_module USING (moduleid)"
. " INNER JOIN configtgz USING (configid)"
. " INNER JOIN configtgz_location USING (configid)"
. " WHERE moduletype IN ('AdAuth', 'LdapAuth')");
$id = array();
while ($row = $res->fetch(PDO::FETCH_ASSOC)) {
if (!is_null($exclude) && (int)$row['moduleid'] === (int)$exclude)
continue;
$id[] = (int)$row['moduleid'];
}
$task = Taskmanager::submit('LdadpLauncher', array(
'ids' => $id,
'parentTask' => $parent,
'failOnParentFail' => false
));
if (!isset($task['id']))
return false;
return $task['id'];
}
/**
* Mount the VM store into the server.
*
* @param array $vmstore VM Store configuration to use. If false, read from properties
* @return array task status of mount procedure, or false on error
*/
public static function mount($vmstore = false)
{
if ($vmstore === false) {
$vmstore = Property::getVmStoreConfig();
}
if (!is_array($vmstore))
return false;
if (isset($vmstore['storetype'])) {
$storetype = $vmstore['storetype'];
} else {
$storetype = 'unknown';
}
if ($storetype === 'nfs')
$addr = $vmstore['nfsaddr'];
if ($storetype === 'cifs')
$addr = $vmstore['cifsaddr'];
if ($storetype === 'internal')
$addr = 'null';
return Taskmanager::submit('MountVmStore', array(
'address' => $addr,
'type' => 'images',
'username' => $vmstore['cifsuser'],
'password' => $vmstore['cifspasswd']
));
}
/**
* Check and process all callbacks.
*
* @return boolean Whether there are still callbacks pending
*/
public static function checkCallbacks()
{
$tasksLeft = false;
$callbackList = TaskmanagerCallback::getPendingCallbacks();
foreach ($callbackList as $taskid => $callbacks) {
$status = Taskmanager::status($taskid);
if ($status === false)
continue;
foreach ($callbacks as $callback) {
TaskmanagerCallback::handleCallback($callback, $status);
}
if (Taskmanager::isFailed($status) || Taskmanager::isFinished($status))
Taskmanager::release($status);
else
$tasksLeft = true;
}
return $tasksLeft;
}
private static function triggerDaemons($action, $parent, &$taskids)
{
$task = Taskmanager::submit('Systemctl', array(
'operation' => $action,
'service' => 'dmsd',
'parentTask' => $parent,
'failOnParentFail' => false
));
if (isset($task['id'])) {
$taskids['dmsdid'] = $task['id'];
$parent = $task['id'];
}
return $parent;
}
public static function stopDaemons($parent, &$taskids)
{
$parent = self::triggerDaemons('stop', $parent, $taskids);
$task = Taskmanager::submit('LdadpLauncher', array(
'ids' => array(),
'parentTask' => $parent,
'failOnParentFail' => false
));
if (isset($task['id'])) {
$taskids['ldadpid'] = $task['id'];
$parent = $task['id'];
}
return $parent;
}
public static function startDaemons($parent, &$taskids)
{
$parent = self::triggerDaemons('start', $parent, $taskids);
$taskid = self::ldadp($parent);
if ($taskid !== false) {
$taskids['ldadpid'] = $taskid;
$parent = $taskid;
}
return $parent;
}
}
