Give_Background_Updater::flush_cache() - Code Metrics - WordImpress/Give - Measure and Improve Code Quality continuously with Scrutinizer

Give_Background_Updater::flush_cache() A
last analyzed 2018-09-17 22:00 UTC

↳ Parent: Give_Background_Updater

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
nc	2
nop	0
dl	0
loc	18
rs	9.6666
c	0
b	0
f	0

<?php
/**
 * Background Updater
 *
 * Uses https://github.com/A5hleyRich/wp-background-processing to handle DB
 * updates in the background.
 *
 * @class    Give_Background_Updater
 * @version  2.0.0
 * @package  Give/Classes
 * @category Class
 * @author   WordImpress
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Give_Background_Updater Class.
 */
class Give_Background_Updater extends WP_Background_Process {

	/**
	 * @var string
	 */
	protected $action = 'give_db_updater';

	/**
	 * Dispatch updater.
	 *
	 * Updater will still run via cron job if this fails for any reason.
	 */
	public function dispatch() {
		if ( give_test_ajax_works() ) {
			parent::dispatch();
		} elseif ( wp_doing_ajax() ) {
			$this->maybe_handle();
		}
	}


	/**
	 * Get all batches.
	 *
	 * @since  2.0
	 * @access public
	 * @return stdClass
	 */
	public function get_all_batch() {
		return parent::get_batch();
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
	}

	/**
	 * Is queue empty
	 *
	 * @since 2.0.3
	 *
	 * @return bool
	 */
	public function has_queue() {
		return ( ! parent::is_queue_empty() );
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
	}


	/**
	 * Lock process
	 *
	 * Lock the process so that multiple instances can't run simultaneously.
	 * Override if applicable, but the duration should be greater than that
	 * defined in the time_exceeded() method.
	 *
	 *
	 * @since 2.0.3
	 */
	protected function lock_process() {
		// Check if admin want to pause upgrade.
		if( get_option('give_pause_upgrade') ) {

			self::flush_cache();

			delete_option( 'give_paused_batches' );

			Give_Updates::get_instance()->__pause_db_update( true );

			delete_option('give_pause_upgrade');


			/**
			 * Fire action when pause db updates
			 *
			 * @since 2.0.1
			 */
			do_action( 'give_pause_db_upgrade', Give_Updates::get_instance() );

			wp_die();
		}



		$this->start_time = time(); // Set start time of current process.

		$lock_duration = ( property_exists( $this, 'queue_lock_time' ) ) ? $this->queue_lock_time : 60; // 1 minute
		$lock_duration = apply_filters( $this->identifier . '_queue_lock_time', $lock_duration );

		set_site_transient( $this->identifier . '_process_lock', microtime(), $lock_duration );
	}

	/**
	 * Handle cron healthcheck
	 *
	 * Restart the background process if not already running
	 * and data exists in the queue.
	 */
	public function handle_cron_healthcheck() {
		if ( $this->is_process_running() || $this->is_paused_process()  ) {
			// Background process already running.
			return;
		}

		if ( $this->is_queue_empty() ) {
			// No data to process.
			$this->clear_scheduled_event();

			return;
		}

		$this->handle();
	}

	/**
	 * Schedule fallback event.
	 */
	protected function schedule_event() {
		if ( ! wp_next_scheduled( $this->cron_hook_identifier ) && ! $this->is_paused_process() ) {
			wp_schedule_event( time() + 10, $this->cron_interval_identifier, $this->cron_hook_identifier );
		}
	}

	/**
	 * Task
	 *
	 * Override this method to perform any actions required on each
	 * queue item. Return the modified item for further processing
	 * in the next pass through. Or, return false to remove the
	 * item from the queue.
	 *
	 * @param array $update Update info
	 *
	 * @return mixed
	 */
	protected function task( $update ) {
		// Pause upgrade immediately if admin pausing upgrades.
		if( $this->is_paused_process() ) {

			wp_die();
		}

		if ( empty( $update ) ) {
			return false;
		}

		// Delete cache.
		self::flush_cache();

		/* @var  Give_Updates $give_updates */
		$give_updates  = Give_Updates::get_instance();
		$resume_update = get_option(
			'give_doing_upgrade',


			// Default update.
			array(
				'update_info'      => $update,
				'step'             => 1,
				'update'           => 1,
				'heading'          => sprintf( 'Update %s of {update_count}', 1 ),
				'percentage'       => $give_updates->percentage,
				'total_percentage' => 0,
			)
		);

		// Continuously skip update if previous update does not complete yet.
		if (
			$resume_update['update_info']['id'] !== $update['id'] &&
			! give_has_upgrade_completed( $resume_update['update_info']['id'] )
		) {
			return $update;
		}

		// Set params.
		$resume_update['update_info'] = $update;
		$give_updates->step           = absint( $resume_update['step'] );
		$give_updates->update         = absint( $resume_update['update'] );
		$is_parent_update_completed   = $give_updates->is_parent_updates_completed( $update );



		// Skip update if dependency update does not complete yet.
		if ( empty( $is_parent_update_completed ) ) {
			// @todo: set error when you have only one update with invalid dependency
			if ( ! is_null( $is_parent_update_completed ) ) {
				return $update;
			}

			return false;
		}



		// Pause upgrade immediately if found following:
		// 1. Running update number greater then total update count
		// 2. Processing percentage greater then 100%
		if( (

			101 < $resume_update['total_percentage'] ) ||
		    ( $give_updates->get_total_db_update_count() < $resume_update['update'] ) ||
		    ! in_array( $resume_update['update_info']['id'], $give_updates->get_update_ids() )
		) {
			if( ! $this->is_paused_process() ){

				$give_updates->__pause_db_update(true);

			}

			update_option( 'give_upgrade_error', 1, false );

			$log_data = 'Update Task' . "\n";
			$log_data .= "Total update count: {$give_updates->get_total_db_update_count()}\n";
			$log_data .= 'Update IDs: ' . print_r( $give_updates->get_update_ids() , true );

			$log_data .= 'Update: ' . print_r( $resume_update , true );


			Give()->logs->add( 'Update Error', $log_data, 0, 'update' );

			wp_die();
		}

		// Disable cache.
		Give_Cache::disable();

		try{
			// Run update.
			if ( is_array( $update['callback'] ) ) {
				$update['callback'][0]->$update['callback'][1]();
			} else {
				$update['callback']();
			}
		} catch ( Exception $e ){

			if( ! $this->is_paused_process() ){

				$give_updates->__pause_db_update(true);

			}

			$log_data = 'Update Task' . "\n";
			$log_data .= print_r( $resume_update, true ) . "\n\n";

			$log_data .= "Error\n {$e->getMessage()}";

			Give()->logs->add( 'Update Error', $log_data, 0, 'update' );
			update_option( 'give_upgrade_error', 1, false );

			wp_die();
		}

		// Set update info.
		$doing_upgrade_args = array(
			'update_info'      => $update,
			'step'             => ++ $give_updates->step,
			'update'           => $give_updates->update,
			'heading'          => sprintf( 'Update %s of %s', $give_updates->update, get_option( 'give_db_update_count' ) ),
			'percentage'       => $give_updates->percentage,
			'total_percentage' => $give_updates->get_db_update_processing_percentage(),
		);

		// Cache upgrade.
		update_option( 'give_doing_upgrade', $doing_upgrade_args, false );

		// Enable cache.
		Give_Cache::enable();

		// Check if current update completed or not.
		if ( give_has_upgrade_completed( $update['id'] ) ) {
			return false;
		}

		return $update;
	}

	/**
	 * Complete
	 *
	 * Override if applicable, but ensure that the below actions are
	 * performed, or, call parent::complete().
	 */
	public function complete() {
		if ( $this->is_paused_process() ) {
			return false;
		}

		parent::complete();

		delete_option( 'give_pause_upgrade' );
		delete_option( 'give_upgrade_error' );
		delete_option( 'give_db_update_count' );
		delete_option( 'give_doing_upgrade' );
		add_option( 'give_show_db_upgrade_complete_notice', 1, '', false );

		// Flush cache.
		Give_Cache::flush_cache( true );

		if ( $cache_keys = Give_Cache::get_options_like( '' ) ) {
			Give_Cache::delete( $cache_keys );
		}
	}

	/**
	 * Get memory limit
	 *
	 * @return int
	 */
	protected function get_memory_limit() {
		if ( function_exists( 'ini_get' ) ) {
			$memory_limit = ini_get( 'memory_limit' );
		} else {
			// Sensible default.
			$memory_limit = '128M';
		}

		if ( ! $memory_limit || '-1' === $memory_limit ) {
			// Unlimited, set to 32GB.
			$memory_limit = '32000M';
		}

		return intval( $memory_limit ) * 1024 * 1024;
	}

	/**
	 * Maybe process queue
	 *
	 * Checks whether data exists within the queue and that
	 * the process is not already running.
	 */
	public function maybe_handle() {
		// Don't lock up other requests while processing
		session_write_close();


		if ( $this->is_process_running() || $this->is_paused_process() ) {
			// Background process already running.
			wp_die();
		}

		if ( $this->is_queue_empty() ) {
			// No data to process.
			wp_die();
		}

		check_ajax_referer( $this->identifier, 'nonce' );

		$this->handle();

		wp_die();
	}

	/**
	 * Handle
	 *
	 * Pass each queue item to the task handler, while remaining
	 * within server memory and time limit constraints.
	 */
	protected function handle() {
		$this->lock_process();

		do {
			$batch = $this->get_batch();

			foreach ( $batch->data as $key => $value ) {
				$task = $this->task( $value );

				if ( false !== $task ) {
					$batch->data[ $key ] = $task;
				} else {
					unset( $batch->data[ $key ] );
				}

				if ( $this->time_exceeded() || $this->memory_exceeded() ) {
					// Batch limits reached.
					break;
				}
			}

			// Update or delete current batch.
			if ( ! empty( $batch->data ) ) {
				$this->update( $batch->key, $batch->data );
			} else {
				$this->delete( $batch->key );
			}
		} while ( ! $this->time_exceeded() && ! $this->memory_exceeded() && ! $this->is_queue_empty() );

		$this->unlock_process();

		// Start next batch or complete process.
		if ( ! $this->is_queue_empty() ) {

			// Dispatch only if ajax works.
			if( give_test_ajax_works() ) {

				$this->dispatch();
			}
		} else {
			$this->complete();
		}

		wp_die();
	}


	/**
	 * Check if backgound upgrade paused or not.
	 *
	 * @since 2.0
	 * @access public
	 * @return bool
	 */
	public function is_paused_process(){
		// Delete cache.
		wp_cache_delete( 'give_paused_batches', 'options' );

		$paused_batches = get_option('give_paused_batches');


		return ! empty( $paused_batches );
	}


	/**
	 * Get identifier
	 *
	 * @since  2.0
	 * @access public
	 * @return mixed|string
	 */
	public function get_identifier() {
		return $this->identifier;
	}

	/**
	 * Get cron identifier
	 *
	 * @since  2.0
	 * @access public
	 * @return mixed|string
	 */
	public function get_cron_identifier() {
		return $this->cron_hook_identifier;
	}


	/**
	 * Flush background update related cache to prevent task to go to stalled state.
	 *
	 * @since 2.0.3
	 */
	public static function flush_cache() {

		$options = array(
			'give_completed_upgrades',
			'give_doing_upgrade',
			'give_paused_batches',
			'give_upgrade_error',
			'give_db_update_count',
			'give_doing_upgrade',
			'give_pause_upgrade',
			'give_show_db_upgrade_complete_notice',
		);



		foreach ( $options as $option ) {
			wp_cache_delete( $option, 'options' );
		}
	}
}


1			<?php
2			/**
3			* Background Updater
4			*
5			* Uses https://github.com/A5hleyRich/wp-background-processing to handle DB
6			* updates in the background.
7			*
8			* @class Give_Background_Updater
9			* @version 2.0.0
10			* @package Give/Classes
11			* @category Class
12			* @author WordImpress
13			*/
14			if ( ! defined( 'ABSPATH' ) ) {
15			exit;
16			}
17
18			/**
19			* Give_Background_Updater Class.
20			*/
21			class Give_Background_Updater extends WP_Background_Process {
22
23			/**
24			* @var string
25			*/
26			protected $action = 'give_db_updater';
27
28			/**
29			* Dispatch updater.
30			*
31			* Updater will still run via cron job if this fails for any reason.
32			*/
33			public function dispatch() {
34			if ( give_test_ajax_works() ) {
35			parent::dispatch();
36			} elseif ( wp_doing_ajax() ) {
37			$this->maybe_handle();
38			}
39			}
40
41
42			/**
43			* Get all batches.
44			*
45			* @since 2.0
46			* @access public
47			* @return stdClass
48			*/
49			public function get_all_batch() {
50			return parent::get_batch();
			0 ignored issues – show Comprehensibility Bug introduced 2018-01-19 07:31 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`get_batch()` instead of `get_all_batch()`). Are you sure this is correct? If so, you might want to change this to `$this->get_batch()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
51			}
52
53			/**
54			* Is queue empty
55			*
56			* @since 2.0.3
57			*
58			* @return bool
59			*/
60			public function has_queue() {
61			return ( ! parent::is_queue_empty() );
			0 ignored issues – show Comprehensibility Bug introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`is_queue_empty()` instead of `has_queue()`). Are you sure this is correct? If so, you might want to change this to `$this->is_queue_empty()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
62			}
63
64
65			/**
66			* Lock process
67			*
68			* Lock the process so that multiple instances can't run simultaneously.
69			* Override if applicable, but the duration should be greater than that
70			* defined in the time_exceeded() method.
71			*
72			*
73			* @since 2.0.3
74			*/
75			protected function lock_process() {
76			// Check if admin want to pause upgrade.
77			if( get_option('give_pause_upgrade') ) {
			0 ignored issues – show introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Space after opening control structure is required Loading history... introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report No space before opening parenthesis is prohibited Loading history... Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Expected 1 spaces after opening bracket; 0 found Loading history... Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Expected 1 spaces before closing bracket; 0 found Loading history...
78			self::flush_cache();
79
80			delete_option( 'give_paused_batches' );
81
82			Give_Updates::get_instance()->__pause_db_update( true );
83
84			delete_option('give_pause_upgrade');
			0 ignored issues – show Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Expected 1 spaces after opening bracket; 0 found Loading history... Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Expected 1 spaces before closing bracket; 0 found Loading history...
85
86			/**
87			* Fire action when pause db updates
88			*
89			* @since 2.0.1
90			*/
91			do_action( 'give_pause_db_upgrade', Give_Updates::get_instance() );
92
93			wp_die();
94			}
95
			0 ignored issues – show Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Functions must not contain multiple empty lines in a row; found 2 empty lines Loading history...
96
97			$this->start_time = time(); // Set start time of current process.
98
99			$lock_duration = ( property_exists( $this, 'queue_lock_time' ) ) ? $this->queue_lock_time : 60; // 1 minute
100			$lock_duration = apply_filters( $this->identifier . '_queue_lock_time', $lock_duration );
101
102			set_site_transient( $this->identifier . '_process_lock', microtime(), $lock_duration );
103			}
104
105			/**
106			* Handle cron healthcheck
107			*
108			* Restart the background process if not already running
109			* and data exists in the queue.
110			*/
111			public function handle_cron_healthcheck() {
112			if ( $this->is_process_running() \|\| $this->is_paused_process() ) {
113			// Background process already running.
114			return;
115			}
116
117			if ( $this->is_queue_empty() ) {
118			// No data to process.
119			$this->clear_scheduled_event();
120
121			return;
122			}
123
124			$this->handle();
125			}
126
127			/**
128			* Schedule fallback event.
129			*/
130			protected function schedule_event() {
131			if ( ! wp_next_scheduled( $this->cron_hook_identifier ) && ! $this->is_paused_process() ) {
132			wp_schedule_event( time() + 10, $this->cron_interval_identifier, $this->cron_hook_identifier );
133			}
134			}
135
136			/**
137			* Task
138			*
139			* Override this method to perform any actions required on each
140			* queue item. Return the modified item for further processing
141			* in the next pass through. Or, return false to remove the
142			* item from the queue.
143			*
144			* @param array $update Update info
145			*
146			* @return mixed
147			*/
148			protected function task( $update ) {
149			// Pause upgrade immediately if admin pausing upgrades.
150			if( $this->is_paused_process() ) {
			0 ignored issues – show introduced 2018-01-25 07:12 UTC by Report Bug Copy Issue Report Space after opening control structure is required Loading history... introduced 2018-01-25 07:12 UTC by Report Bug Copy Issue Report No space before opening parenthesis is prohibited Loading history...
151			wp_die();
152			}
153
154			if ( empty( $update ) ) {
155			return false;
156			}
157
158			// Delete cache.
159			self::flush_cache();
160
161			/* @var Give_Updates $give_updates */
162			$give_updates = Give_Updates::get_instance();
163			$resume_update = get_option(
164			'give_doing_upgrade',
165
			0 ignored issues – show Coding Style introduced 2018-01-17 19:08 UTC by Report Bug Copy Issue Report There should be no empty lines in a multi-line function call. Loading history...
166			// Default update.
167			array(
168			'update_info' => $update,
169			'step' => 1,
170			'update' => 1,
171			'heading' => sprintf( 'Update %s of {update_count}', 1 ),
172			'percentage' => $give_updates->percentage,
173			'total_percentage' => 0,
174			)
175			);
176
177			// Continuously skip update if previous update does not complete yet.
178			if (
179			$resume_update['update_info']['id'] !== $update['id'] &&
180			! give_has_upgrade_completed( $resume_update['update_info']['id'] )
181			) {
182			return $update;
183			}
184
185			// Set params.
186			$resume_update['update_info'] = $update;
187			$give_updates->step = absint( $resume_update['step'] );
188			$give_updates->update = absint( $resume_update['update'] );
189			$is_parent_update_completed = $give_updates->is_parent_updates_completed( $update );
190
			0 ignored issues – show Coding Style introduced 2018-01-19 07:32 UTC by Report Bug Copy Issue Report Functions must not contain multiple empty lines in a row; found 2 empty lines Loading history...
191
192			// Skip update if dependency update does not complete yet.
193			if ( empty( $is_parent_update_completed ) ) {
194			// @todo: set error when you have only one update with invalid dependency
195			if ( ! is_null( $is_parent_update_completed ) ) {
196			return $update;
197			}
198
199			return false;
200			}
201
			0 ignored issues – show Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Functions must not contain multiple empty lines in a row; found 2 empty lines Loading history...
202
203			// Pause upgrade immediately if found following:
204			// 1. Running update number greater then total update count
205			// 2. Processing percentage greater then 100%
206			if( (
			0 ignored issues – show introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Space after opening control structure is required Loading history... introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report No space before opening parenthesis is prohibited Loading history...
207			101 < $resume_update['total_percentage'] ) \|\|
208			( $give_updates->get_total_db_update_count() < $resume_update['update'] ) \|\|
209			! in_array( $resume_update['update_info']['id'], $give_updates->get_update_ids() )
210			) {
211			if( ! $this->is_paused_process() ){
			0 ignored issues – show introduced 2018-01-25 07:12 UTC by Report Bug Copy Issue Report Space after opening control structure is required Loading history... introduced 2018-01-25 07:12 UTC by Report Bug Copy Issue Report No space before opening parenthesis is prohibited Loading history...
212			$give_updates->__pause_db_update(true);
			0 ignored issues – show Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Expected 1 spaces after opening bracket; 0 found Loading history... Coding Style introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report Expected 1 spaces before closing bracket; 0 found Loading history...
213			}
214
215			update_option( 'give_upgrade_error', 1, false );
216
217			$log_data = 'Update Task' . "\n";
218			$log_data .= "Total update count: {$give_updates->get_total_db_update_count()}\n";
219			$log_data .= 'Update IDs: ' . print_r( $give_updates->get_update_ids() , true );
			0 ignored issues – show introduced 2018-02-15 00:34 UTC by Report Bug Copy Issue Report The use of function print_r() is discouraged Loading history...
220			$log_data .= 'Update: ' . print_r( $resume_update , true );
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221
222			Give()->logs->add( 'Update Error', $log_data, 0, 'update' );
223
224			wp_die();
225			}
226
227			// Disable cache.
228			Give_Cache::disable();
229
230			try{
231			// Run update.
232			if ( is_array( $update['callback'] ) ) {
233			$update['callback'][0]->$update['callback'][1]();
234			} else {
235			$update['callback']();
236			}
237			} catch ( Exception $e ){
238
239			if( ! $this->is_paused_process() ){
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240			$give_updates->__pause_db_update(true);
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241			}
242
243			$log_data = 'Update Task' . "\n";
244			$log_data .= print_r( $resume_update, true ) . "\n\n";
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245			$log_data .= "Error\n {$e->getMessage()}";
246
247			Give()->logs->add( 'Update Error', $log_data, 0, 'update' );
248			update_option( 'give_upgrade_error', 1, false );
249
250			wp_die();
251			}
252
253			// Set update info.
254			$doing_upgrade_args = array(
255			'update_info' => $update,
256			'step' => ++ $give_updates->step,
257			'update' => $give_updates->update,
258			'heading' => sprintf( 'Update %s of %s', $give_updates->update, get_option( 'give_db_update_count' ) ),
259			'percentage' => $give_updates->percentage,
260			'total_percentage' => $give_updates->get_db_update_processing_percentage(),
261			);
262
263			// Cache upgrade.
264			update_option( 'give_doing_upgrade', $doing_upgrade_args, false );
265
266			// Enable cache.
267			Give_Cache::enable();
268
269			// Check if current update completed or not.
270			if ( give_has_upgrade_completed( $update['id'] ) ) {
271			return false;
272			}
273
274			return $update;
275			}
276
277			/**
278			* Complete
279			*
280			* Override if applicable, but ensure that the below actions are
281			* performed, or, call parent::complete().
282			*/
283			public function complete() {
284			if ( $this->is_paused_process() ) {
285			return false;
286			}
287
288			parent::complete();
289
290			delete_option( 'give_pause_upgrade' );
291			delete_option( 'give_upgrade_error' );
292			delete_option( 'give_db_update_count' );
293			delete_option( 'give_doing_upgrade' );
294			add_option( 'give_show_db_upgrade_complete_notice', 1, '', false );
295
296			// Flush cache.
297			Give_Cache::flush_cache( true );
298
299			if ( $cache_keys = Give_Cache::get_options_like( '' ) ) {
300			Give_Cache::delete( $cache_keys );
301			}
302			}
303
304			/**
305			* Get memory limit
306			*
307			* @return int
308			*/
309			protected function get_memory_limit() {
310			if ( function_exists( 'ini_get' ) ) {
311			$memory_limit = ini_get( 'memory_limit' );
312			} else {
313			// Sensible default.
314			$memory_limit = '128M';
315			}
316
317			if ( ! $memory_limit \|\| '-1' === $memory_limit ) {
318			// Unlimited, set to 32GB.
319			$memory_limit = '32000M';
320			}
321
322			return intval( $memory_limit ) * 1024 * 1024;
323			}
324
325			/**
326			* Maybe process queue
327			*
328			* Checks whether data exists within the queue and that
329			* the process is not already running.
330			*/
331			public function maybe_handle() {
332			// Don't lock up other requests while processing
333			session_write_close();
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334
335			if ( $this->is_process_running() \|\| $this->is_paused_process() ) {
336			// Background process already running.
337			wp_die();
338			}
339
340			if ( $this->is_queue_empty() ) {
341			// No data to process.
342			wp_die();
343			}
344
345			check_ajax_referer( $this->identifier, 'nonce' );
346
347			$this->handle();
348
349			wp_die();
350			}
351
352			/**
353			* Handle
354			*
355			* Pass each queue item to the task handler, while remaining
356			* within server memory and time limit constraints.
357			*/
358			protected function handle() {
359			$this->lock_process();
360
361			do {
362			$batch = $this->get_batch();
363
364			foreach ( $batch->data as $key => $value ) {
365			$task = $this->task( $value );
366
367			if ( false !== $task ) {
368			$batch->data[ $key ] = $task;
369			} else {
370			unset( $batch->data[ $key ] );
371			}
372
373			if ( $this->time_exceeded() \|\| $this->memory_exceeded() ) {
374			// Batch limits reached.
375			break;
376			}
377			}
378
379			// Update or delete current batch.
380			if ( ! empty( $batch->data ) ) {
381			$this->update( $batch->key, $batch->data );
382			} else {
383			$this->delete( $batch->key );
384			}
385			} while ( ! $this->time_exceeded() && ! $this->memory_exceeded() && ! $this->is_queue_empty() );
386
387			$this->unlock_process();
388
389			// Start next batch or complete process.
390			if ( ! $this->is_queue_empty() ) {
391
392			// Dispatch only if ajax works.
393			if( give_test_ajax_works() ) {
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394			$this->dispatch();
395			}
396			} else {
397			$this->complete();
398			}
399
400			wp_die();
401			}
402
403
404			/**
405			* Check if backgound upgrade paused or not.
406			*
407			* @since 2.0
408			* @access public
409			* @return bool
410			*/
411			public function is_paused_process(){
412			// Delete cache.
413			wp_cache_delete( 'give_paused_batches', 'options' );
414
415			$paused_batches = get_option('give_paused_batches');
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416
417			return ! empty( $paused_batches );
418			}
419
420
421			/**
422			* Get identifier
423			*
424			* @since 2.0
425			* @access public
426			* @return mixed\|string
427			*/
428			public function get_identifier() {
429			return $this->identifier;
430			}
431
432			/**
433			* Get cron identifier
434			*
435			* @since 2.0
436			* @access public
437			* @return mixed\|string
438			*/
439			public function get_cron_identifier() {
440			return $this->cron_hook_identifier;
441			}
442
443
444			/**
445			* Flush background update related cache to prevent task to go to stalled state.
446			*
447			* @since 2.0.3
448			*/
449			public static function flush_cache() {
450
451			$options = array(
452			'give_completed_upgrades',
453			'give_doing_upgrade',
454			'give_paused_batches',
455			'give_upgrade_error',
456			'give_db_update_count',
457			'give_doing_upgrade',
458			'give_pause_upgrade',
459			'give_show_db_upgrade_complete_notice',
460			);
461
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462
463			foreach ( $options as $option ) {
464			wp_cache_delete( $option, 'options' );
465			}
466			}
467			}
468

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Give_Background_Updater::flush_cache() A last analyzed 2018-09-17 22:00 UTC

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Give_Background_Updater::flush_cache() A
last analyzed 2018-09-17 22:00 UTC