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sources/lib/backgroundjob/worker.php
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<?php
/**
* ownCloud
*
* @author Jakob Sack
* @copyright 2012 Jakob Sack owncloud@jakobsack.de
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This class does the dirty work.
*
* TODO: locking in doAllSteps
*/
class OC_BackgroundJob_Worker{
/**
* @brief executes all tasks
* @return boolean
*
* This method executes all regular tasks and then all queued tasks.
* This method should be called by cli scripts that do not let the user
* wait.
*/
public static function doAllSteps() {
// Do our regular work
$lasttask = OC_Appconfig::getValue( 'core', 'backgroundjobs_task', '' );
$regular_tasks = OC_BackgroundJob_RegularTask::all();
ksort( $regular_tasks );
foreach( $regular_tasks as $key => $value ) {
if( strcmp( $key, $lasttask ) > 0 ) {
// Set "restart here" config value
OC_Appconfig::setValue( 'core', 'backgroundjobs_task', $key );
call_user_func( $value );
}
}
// Reset "start here" config value
OC_Appconfig::setValue( 'core', 'backgroundjobs_task', '' );
// Do our queued tasks
$queued_tasks = OC_BackgroundJob_QueuedTask::all();
foreach( $queued_tasks as $task ) {
OC_BackgroundJob_QueuedTask::delete( $task['id'] );
call_user_func( array( $task['klass'], $task['method'] ), $task['parameters'] );
}
return true;
}
/**
* @brief does a single task
* @return boolean
*
* This method executes one task. It saves the last state and continues
* with the next step. This method should be used by webcron and ajax
* services.
*/
public static function doNextStep() {
$laststep = OC_Appconfig::getValue( 'core', 'backgroundjobs_step', 'regular_tasks' );
if( $laststep == 'regular_tasks' ) {
// get last app
$lasttask = OC_Appconfig::getValue( 'core', 'backgroundjobs_task', '' );
// What's the next step?
$regular_tasks = OC_BackgroundJob_RegularTask::all();
ksort( $regular_tasks );
$done = false;
// search for next background job
foreach( $regular_tasks as $key => $value ) {
if( strcmp( $key, $lasttask ) > 0 ) {
OC_Appconfig::setValue( 'core', 'backgroundjobs_task', $key );
$done = true;
call_user_func( $value );
break;
}
}
if( $done == false ) {
// Next time load queued tasks
OC_Appconfig::setValue( 'core', 'backgroundjobs_step', 'queued_tasks' );
}
}
else{
$tasks = OC_BackgroundJob_QueuedTask::all();
if( count( $tasks )) {
$task = $tasks[0];
// delete job before we execute it. This prevents endless loops
// of failing jobs.
OC_BackgroundJob_QueuedTask::delete($task['id']);
// execute job
call_user_func( array( $task['klass'], $task['method'] ), $task['parameters'] );
}
else{
// Next time load queued tasks
OC_Appconfig::setValue( 'core', 'backgroundjobs_step', 'regular_tasks' );
OC_Appconfig::setValue( 'core', 'backgroundjobs_task', '' );
}
}
return true;
}
}
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