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<?php |
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/** |
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* WCPOS_REST_API. |
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* |
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* @package WCPOS\WooCommercePOS |
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*/ |
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|
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namespace WCPOS\WooCommercePOS\API\Traits; |
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|
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use Automattic\WooCommerce\Utilities\OrderUtil; |
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use WC_Data; |
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use WCPOS\WooCommercePOS\Logger; |
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use WP_REST_Response; |
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use Exception; |
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|
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/** |
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* Shared helpers for all WCPOS REST API controllers. |
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*/ |
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trait WCPOS_REST_API { |
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/** |
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* Formats the response for all fetched posts into associative arrays. |
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* |
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* @param array $results The raw results from the database query. |
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* |
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* @return array An array of associative arrays with post information. |
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*/ |
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public function wcpos_format_all_posts_response( $results ) { |
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/** |
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* Performance notes: |
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* - Using a generator is faster than array_map when dealing with large datasets. |
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* - If date is in the format 'Y-m-d H:i:s' we just do preg_replace to 'Y-m-d\TH:i:s', rather than using wc_rest_prepare_date_response |
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* |
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* This resulted in execution time of 10% of the original time. |
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*/ |
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return iterator_to_array( |
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( function () use ( $results ) { |
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foreach ( $results as $result ) { |
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$result['id'] = (int) $result['id']; |
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|
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if ( isset( $result['date_modified_gmt'] ) ) { |
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if ( preg_match( '/\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}/', $result['date_modified_gmt'] ) ) { |
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$result['date_modified_gmt'] = preg_replace( '/(\d{4}-\d{2}-\d{2}) (\d{2}:\d{2}:\d{2})/', '$1T$2', $result['date_modified_gmt'] ); |
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} else { |
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$result['date_modified_gmt'] = wc_rest_prepare_date_response( $result['date_modified_gmt'] ); |
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} |
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} |
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|
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yield $result; |
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} |
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} )() |
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); |
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} |
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|
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/** |
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* BUG FIX: some servers are not returning the correct meta_data if it is left as WC_Meta_Data objects |
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* NOTE: it only seems to effect some versions of PHP, or some plugins are adding weird meta_data types |
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* The result is mata_data: [{}, {}, {}] ie: empty objects, I think json_encode can't handle the WC_Meta_Data objects. |
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* |
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* @param WC_Data $object The WC_Data object to parse meta from. |
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* |
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* @return array |
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*/ |
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public function wcpos_parse_meta_data( WC_Data $object ): array { |
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$raw_meta = $object->get_meta_data(); |
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$meta_data = array_map( |
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function ( $meta_data ) { |
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return $meta_data->get_data(); |
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}, |
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$raw_meta |
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); |
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|
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// Monitor meta count and log if thresholds exceeded. |
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$this->wcpos_monitor_meta_count( $object, $raw_meta ); |
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|
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return $meta_data; |
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} |
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|
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/** |
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* Monitor meta_data count and log warnings/errors when thresholds are exceeded. |
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* |
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* Uses a static array to throttle logging: one log per object per request lifecycle. |
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* |
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* @param WC_Data $object The WC_Data object. |
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* @param array $raw_meta Array of WC_Meta_Data objects. |
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*/ |
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private function wcpos_monitor_meta_count( WC_Data $object, array $raw_meta ): void { |
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static $logged_ids = array(); |
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|
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$count = \count( $raw_meta ); |
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$id = $object->get_id(); |
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|
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// Throttle: one log per object per request. |
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$key = \get_class( $object ) . '_' . $id; |
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if ( isset( $logged_ids[ $key ] ) ) { |
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return; |
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} |
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|
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$warning_threshold = (int) apply_filters( 'woocommerce_pos_meta_data_warning_threshold', 50 ); |
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$error_threshold = (int) apply_filters( 'woocommerce_pos_meta_data_error_threshold', 500 ); |
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$include_top_keys = (bool) apply_filters( 'woocommerce_pos_meta_data_log_top_keys', false, $object, $count ); |
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$context = $include_top_keys ? 'Top meta keys: ' . $this->wcpos_get_top_meta_keys( $raw_meta ) : null; |
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|
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if ( $count >= $error_threshold ) { |
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$logged_ids[ $key ] = true; |
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$type = $this->wcpos_get_object_type_label( $object ); |
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Logger::error( |
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"{$type} #{$id} has {$count} meta_data entries (threshold: {$error_threshold}). This is likely causing performance issues.", |
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$context |
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); |
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} elseif ( $count >= $warning_threshold ) { |
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$logged_ids[ $key ] = true; |
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$type = $this->wcpos_get_object_type_label( $object ); |
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Logger::warning( |
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"{$type} #{$id} has {$count} meta_data entries (threshold: {$warning_threshold}). This may indicate plugin meta bloat.", |
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$context |
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); |
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} |
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} |
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|
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/** |
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* Get a human-readable label for a WC_Data object type. |
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* |
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* @param WC_Data $object The WC_Data object. |
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* |
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* @return string |
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*/ |
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private function wcpos_get_object_type_label( WC_Data $object ): string { |
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if ( $object instanceof \WC_Order ) { |
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return 'Order'; |
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} |
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if ( $object instanceof \WC_Product_Variation ) { |
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return 'Variation'; |
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} |
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if ( $object instanceof \WC_Product ) { |
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return 'Product'; |
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} |
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if ( $object instanceof \WC_Customer ) { |
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return 'Customer'; |
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} |
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|
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return 'Object'; |
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} |
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|
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/** |
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* Get a string of the top 10 most common meta keys and their counts. |
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* |
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* @param array $raw_meta Array of WC_Meta_Data objects. |
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* |
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* @return string Formatted string like "_yoast_seo (12), _elementor_data (8), ..." |
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*/ |
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private function wcpos_get_top_meta_keys( array $raw_meta ): string { |
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$counts = array(); |
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foreach ( $raw_meta as $meta ) { |
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$meta_key = $meta->key; |
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if ( ! isset( $counts[ $meta_key ] ) ) { |
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$counts[ $meta_key ] = 0; |
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} |
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++$counts[ $meta_key ]; |
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} |
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arsort( $counts ); |
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$top = \array_slice( $counts, 0, 10, true ); |
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|
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$parts = array(); |
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foreach ( $top as $meta_key => $cnt ) { |
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$parts[] = "{$meta_key} ({$cnt})"; |
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} |
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|
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return implode( ', ', $parts ); |
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} |
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|
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/** |
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* Estimate the response size and log if it exceeds thresholds. |
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* |
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* Uses a lightweight calculation instead of serialize() to avoid doubling memory usage. |
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* |
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* @param array $data The response data array. |
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* @param int $id The object ID. |
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* @param string $type The object type label (e.g. 'Product', 'Order'). |
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*/ |
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public function wcpos_estimate_response_size( array $data, int $id, string $type ): void { |
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static $logged_ids = array(); |
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|
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$key = $type . '_' . $id; |
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if ( isset( $logged_ids[ $key ] ) ) { |
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return; |
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} |
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|
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// Estimate: meta_count * 200 bytes + string field lengths. |
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$meta_count = isset( $data['meta_data'] ) ? \count( $data['meta_data'] ) : 0; |
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$estimated_size = $meta_count * 200; |
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|
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// Add string field sizes. |
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$string_fields = array( 'description', 'short_description', 'content' ); |
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foreach ( $string_fields as $field ) { |
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if ( isset( $data[ $field ] ) && \is_string( $data[ $field ] ) ) { |
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$estimated_size += \strlen( $data[ $field ] ); |
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} |
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} |
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|
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$warning_threshold = (int) apply_filters( 'woocommerce_pos_response_size_warning_threshold', 100000 ); |
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$error_threshold = (int) apply_filters( 'woocommerce_pos_response_size_error_threshold', 500000 ); |
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|
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if ( $estimated_size >= $error_threshold ) { |
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$logged_ids[ $key ] = true; |
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$size_kb = round( $estimated_size / 1024, 1 ); |
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$threshold_kb = round( $error_threshold / 1024, 1 ); |
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Logger::error( "{$type} #{$id} estimated response size {$size_kb}KB exceeds {$threshold_kb}KB threshold." ); |
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} elseif ( $estimated_size >= $warning_threshold ) { |
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$logged_ids[ $key ] = true; |
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$size_kb = round( $estimated_size / 1024, 1 ); |
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$threshold_kb = round( $warning_threshold / 1024, 1 ); |
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Logger::warning( "{$type} #{$id} estimated response size {$size_kb}KB exceeds {$threshold_kb}KB threshold." ); |
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} |
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} |
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|
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/** |
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* Pre-flight check: count meta entries for an object before WC loads it. |
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* |
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* Runs a cheap SELECT COUNT(*) query. Callers should check the return value |
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* and bypass WC's response pipeline if the count exceeds the error threshold. |
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* |
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* @param int $object_id The object ID. |
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* @param string $object_type One of 'post', 'order', 'user'. |
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* |
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* @return int The meta count. |
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*/ |
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public function wcpos_preflight_meta_count( int $object_id, string $object_type = 'post' ): int { |
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global $wpdb; |
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|
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switch ( $object_type ) { |
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case 'order': |
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if ( class_exists( OrderUtil::class ) && OrderUtil::custom_orders_table_usage_is_enabled() ) { |
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$table = "{$wpdb->prefix}wc_orders_meta"; |
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$column = 'order_id'; |
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} else { |
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$table = $wpdb->postmeta; |
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$column = 'post_id'; |
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} |
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break; |
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|
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case 'user': |
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$table = $wpdb->usermeta; |
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$column = 'user_id'; |
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break; |
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|
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default: |
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$table = $wpdb->postmeta; |
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$column = 'post_id'; |
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break; |
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} |
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|
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$count = (int) $wpdb->get_var( |
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// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- table/column names are safe hardcoded values. |
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$wpdb->prepare( "SELECT COUNT(*) FROM {$table} WHERE {$column} = %d", $object_id ) |
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); |
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|
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return $count; |
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} |
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|
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/** |
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* Get only the essential POS meta keys for an object when the full meta load would OOM. |
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* |
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* @param int $object_id The object ID. |
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* @param string $object_type One of 'post', 'order', 'user'. |
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* @param array $extra_keys Additional meta keys to include. |
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* |
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* @return array Array of meta entries in WC REST format [{id, key, value}, ...]. |
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*/ |
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public function wcpos_get_essential_meta( int $object_id, string $object_type = 'post', array $extra_keys = array() ): array { |
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global $wpdb; |
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|
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// Base essential key present for all object types. |
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$keys = array( '_woocommerce_pos_uuid' ); |
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$keys = array_merge( $keys, $extra_keys ); |
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|
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// Build LIKE patterns for wildcard pro keys (products/variations only). |
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$like_patterns = array(); |
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|
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switch ( $object_type ) { |
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case 'order': |
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if ( class_exists( OrderUtil::class ) && OrderUtil::custom_orders_table_usage_is_enabled() ) { |
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$table = "{$wpdb->prefix}wc_orders_meta"; |
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$id_col = 'order_id'; |
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$meta_id = 'id'; |
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} else { |
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$table = $wpdb->postmeta; |
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$id_col = 'post_id'; |
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$meta_id = 'meta_id'; |
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} |
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$keys = array_merge( |
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$keys, |
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array( |
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'_pos_user', |
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'_pos_store', |
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'_pos_cash_amount_tendered', |
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'_pos_cash_change', |
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'_pos_card_cashback', |
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'_woocommerce_pos_tax_based_on', |
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) |
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); |
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break; |
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|
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case 'user': |
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$table = $wpdb->usermeta; |
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$id_col = 'user_id'; |
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$meta_id = 'umeta_id'; |
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break; |
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|
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default: // post (products, variations). |
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$table = $wpdb->postmeta; |
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$id_col = 'post_id'; |
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$meta_id = 'meta_id'; |
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|
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// Add barcode field if it's a custom meta key. |
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$barcode_field = woocommerce_pos_get_settings( 'general', 'barcode_field' ); |
| 316 |
if ( \is_string( $barcode_field ) && ! empty( $barcode_field ) |
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&& '_sku' !== $barcode_field && '_global_unique_id' !== $barcode_field ) { |
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$keys[] = $barcode_field; |
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} |
| 320 |
$keys[] = '_woocommerce_pos_variable_prices'; |
| 321 |
|
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// Pro store-specific pricing keys use wildcard patterns. |
| 323 |
$like_patterns = array( |
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'_pos_price%', |
| 325 |
'_pos_regular_price%', |
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'_pos_sale_price%', |
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'_pos_tax_status%', |
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'_pos_tax_class%', |
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'_pos_price_fields%', |
| 330 |
'_pos_tax_fields%', |
| 331 |
); |
| 332 |
break; |
| 333 |
} |
| 334 |
|
| 335 |
$keys = array_unique( $keys ); |
| 336 |
|
| 337 |
// Build the WHERE clause. |
| 338 |
$placeholders = implode( ', ', array_fill( 0, \count( $keys ), '%s' ) ); |
| 339 |
$prepare_args = array_merge( array( $object_id ), $keys ); |
| 340 |
|
| 341 |
// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- table/column names are safe hardcoded values. |
| 342 |
$where = $wpdb->prepare( "{$id_col} = %d AND meta_key IN ({$placeholders})", $prepare_args ); |
| 343 |
|
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// Add LIKE patterns for wildcard keys. |
| 345 |
foreach ( $like_patterns as $pattern ) { |
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// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- table/column names are safe hardcoded values. |
| 347 |
$where .= $wpdb->prepare( " OR ({$id_col} = %d AND meta_key LIKE %s)", $object_id, $pattern ); |
| 348 |
} |
| 349 |
|
| 350 |
// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQL.NotPrepared -- built safely above. |
| 351 |
$results = $wpdb->get_results( "SELECT {$meta_id} as meta_id, meta_key, meta_value FROM {$table} WHERE {$where}" ); |
| 352 |
|
| 353 |
if ( ! $results ) { |
| 354 |
return array(); |
| 355 |
} |
| 356 |
|
| 357 |
return array_map( |
| 358 |
function ( $row ) { |
| 359 |
return array( |
| 360 |
'id' => (int) $row->meta_id, |
| 361 |
'key' => $row->meta_key, |
| 362 |
'value' => maybe_unserialize( $row->meta_value ), |
| 363 |
); |
| 364 |
}, |
| 365 |
$results |
| 366 |
); |
| 367 |
} |
| 368 |
|
| 369 |
/** |
| 370 |
* Get barcode field from settings. |
| 371 |
* |
| 372 |
* @return bool |
| 373 |
*/ |
| 374 |
public function wcpos_allow_decimal_quantities() { |
| 375 |
$allow_decimal_quantities = woocommerce_pos_get_settings( 'general', 'decimal_qty' ); |
| 376 |
|
| 377 |
// Check for WP_Error. |
| 378 |
if ( is_wp_error( $allow_decimal_quantities ) ) { |
| 379 |
Logger::log( 'Error retrieving decimal_qty: ' . $allow_decimal_quantities->get_error_message() ); |
| 380 |
|
| 381 |
return false; |
| 382 |
} |
| 383 |
|
| 384 |
// make sure it's true, just in case there's a corrupt setting. |
| 385 |
return true === $allow_decimal_quantities; |
| 386 |
} |
| 387 |
|
| 388 |
/** |
| 389 |
* Get server load average. |
| 390 |
* |
| 391 |
* @return array The load average. |
| 392 |
*/ |
| 393 |
public function get_server_load() { |
| 394 |
try { |
| 395 |
if ( stristr( PHP_OS, 'win' ) ) { |
| 396 |
// Use WMIC to get load percentage from Windows. |
| 397 |
$load = @shell_exec( 'wmic cpu get loadpercentage /all' ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged |
| 398 |
if ( $load ) { |
| 399 |
$load = explode( "\n", $load ); |
| 400 |
if ( isset( $load[1] ) ) { |
| 401 |
$load = intval( $load[1] ); |
| 402 |
return array( $load, $load, $load ); // Mimic the array structure of sys_getloadavg(). |
| 403 |
} |
| 404 |
} |
| 405 |
} elseif ( function_exists( 'sys_getloadavg' ) ) { |
| 406 |
return sys_getloadavg(); |
| 407 |
} |
| 408 |
} catch ( Exception $e ) { |
| 409 |
// Log the error for debugging purposes. |
| 410 |
Logger::log( 'Error getting server load: ' . $e->getMessage() ); |
| 411 |
} |
| 412 |
|
| 413 |
// Fallback if no method is available or an error occurs. |
| 414 |
return array( 0, 0, 0 ); |
| 415 |
} |
| 416 |
} |
| 417 |
|
