aboutsummaryrefslogtreecommitdiffstats
path: root/phpBB/phpbb/install/module_base.php
blob: 93c10bd656b9301805d334e1ee2fb348424863b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
<?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;
	}
}