113 lines
3.4 KiB
PHP
113 lines
3.4 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2013 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class task_Core {
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/**
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* Get all available tasks
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*/
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static function get_definitions() {
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$tasks = array();
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foreach (module::active() as $module) {
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$class_name = "{$module->name}_task";
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if (method_exists($class_name, "available_tasks")) {
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foreach (call_user_func(array($class_name, "available_tasks")) as $task) {
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$tasks[$task->callback] = $task;
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}
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}
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}
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return $tasks;
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}
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static function start($task_callback, $context=array()) {
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$tasks = task::get_definitions();
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$task = task::create($tasks[$task_callback], array());
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$task->log(t("Task %task_name started (task id %task_id)",
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array("task_name" => $task->name, "task_id" => $task->id)));
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return $task;
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}
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static function create($task_def, $context) {
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$task = ORM::factory("task");
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$task->callback = $task_def->callback;
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$task->name = $task_def->name;
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$task->percent_complete = 0;
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$task->status = "";
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$task->state = "started";
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$task->owner_id = identity::active_user()->id;
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$task->context = serialize($context);
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$task->save();
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return $task;
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}
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static function cancel($task_id) {
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$task = ORM::factory("task", $task_id);
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if (!$task->loaded()) {
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throw new Exception("@todo MISSING_TASK");
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}
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$task->done = 1;
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$task->state = "cancelled";
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$task->log(t("Task %task_name cancelled (task id %task_id)",
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array("task_name" => $task->name, "task_id" => $task->id)));
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$task->save();
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return $task;
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}
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static function remove($task_id) {
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$task = ORM::factory("task", $task_id);
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if ($task->loaded()) {
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$task->delete();
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}
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}
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static function run($task_id) {
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$task = ORM::factory("task", $task_id);
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if (!$task->loaded()) {
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throw new Exception("@todo MISSING_TASK");
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}
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try {
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$task->state = "running";
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call_user_func_array($task->callback, array(&$task));
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if ($task->done) {
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$task->log($task->status);
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}
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$task->save();
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} catch (Exception $e) {
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Kohana_Log::add("error", (string)$e);
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// Ugh. I hate to use instanceof, But this beats catching the exception separately since
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// we mostly want to treat it the same way as all other exceptions
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if ($e instanceof ORM_Validation_Exception) {
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Kohana_Log::add("error", "Validation errors: " . print_r($e->validation->errors(), 1));
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}
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$task->log((string)$e);
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$task->state = "error";
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$task->done = true;
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$task->status = substr($e->getMessage(), 0, 255);
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$task->save();
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}
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return $task;
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}
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} |