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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\install;
use phpbb\di\ordered_service_collection;
use phpbb\install\exception\resource_limit_reached_exception;
use phpbb\install\helper\config;
use phpbb\install\helper\iohandler\iohandler_interface;
/**
* Base class for installer module
*/
abstract class module_base implements module_interface
{
/**
* @var config
*/
protected $install_config;
/**
* @var iohandler_interface
*/
protected $iohandler;
/**
* @var bool
*/
protected $is_essential;
/**
* Array of tasks for installer module
*
* @var ordered_service_collection
*/
protected $task_collection;
/**
* @var array
*/
protected $task_step_count;
/**
* @var bool
*/
protected $allow_progress_bar;
/**
* Installer module constructor
*
* @param ordered_service_collection $tasks array of installer tasks for installer module
* @param bool $essential flag indicating whether the module is essential or not
* @param bool $allow_progress_bar flag indicating whether or not to send progress information from within the module
*/
public function __construct(ordered_service_collection $tasks, $essential = true, $allow_progress_bar = true)
{
$this->task_collection = $tasks;
$this->is_essential = $essential;
$this->allow_progress_bar = $allow_progress_bar;
}
/**
* Dependency getter
*
* @param config $config
* @param iohandler_interface $iohandler
*/
public function setup(config $config, iohandler_interface $iohandler)
{
$this->install_config = $config;
$this->iohandler = $iohandler;
}
/**
* {@inheritdoc}
*/
public function is_essential()
{
return $this->is_essential;
}
/**
* {@inheritdoc}
*
* Overwrite this method if your task is non-essential!
*/
public function check_requirements()
{
return true;
}
/**
* {@inheritdoc}
*/
public function run()
{
// Recover install progress
$task_index = $this->recover_progress();
$iterator = $this->task_collection->getIterator();
if ($task_index < $iterator->count())
{
$iterator->seek($task_index);
}
else
{
$this->install_config->set_finished_task(0);
return;
}
while ($iterator->valid())
{
$task = $iterator->current();
$name = $iterator->key();
// Check if we can run the task
if (!$task->is_essential() && !$task->check_requirements())
{
$this->iohandler->add_log_message(array(
'SKIP_TASK',
$name,
));
$this->install_config->increment_current_task_progress($this->task_step_count[$name]);
}
else
{
// Send progress information
if ($this->allow_progress_bar)
{
$this->iohandler->set_progress(
$task->get_task_lang_name(),
$this->install_config->get_current_task_progress()
);
$this->iohandler->send_response();
}
$task->run();
if ($this->allow_progress_bar)
{
// Only increment progress by one, as if a task has more than one steps
// then that should be incremented in the task itself
$this->install_config->increment_current_task_progress();
}
}
$task_index++;
$this->install_config->set_finished_task($task_index);
$iterator->next();
// Send progress information
if ($this->allow_progress_bar)
{
$this->iohandler->set_progress(
$task->get_task_lang_name(),
$this->install_config->get_current_task_progress()
);
}
$this->iohandler->send_response();
// Stop execution if resource limit is reached
if ($iterator->valid() && ($this->install_config->get_time_remaining() <= 0 || $this->install_config->get_memory_remaining() <= 0))
{
throw new resource_limit_reached_exception();
}
}
// Module finished, so clear task progress
$this->install_config->set_finished_task(0);
}
/**
* Returns the next task's name
*
* @return string Index of the array element of the next task
*/
protected function recover_progress()
{
$progress_array = $this->install_config->get_progress_data();
return $progress_array['last_task_index'];
}
/**
* {@inheritdoc}
*/
public function get_step_count()
{
$task_step_count = 0;
$task_class_names = $this->task_collection->get_service_classes();
foreach ($task_class_names as $name => $task_class)
{
$step_count = $task_class::get_step_count();
$task_step_count += $step_count;
$this->task_step_count[$name] = $step_count;
}
return $task_step_count;
}
}
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