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self::POST_TYPE, 'post_status' => 'publish', 'post_title' => sprintf( 'Import from %s - %s', $args['data_source'], $args['file_name'] ?? $args['source_url'] ?? 'Unknown source' ), 'meta_input' => array( 'data_source' => $args['data_source'], 'started_at' => time(), 'file_name' => $args['file_name'] ?? null, 'source_url' => $args['source_url'] ?? null, 'attachment_id' => $args['attachment_id'] ?? null, ), ), true ); if ( is_wp_error( $post_id ) ) { throw new \Exception( 'Error creating an import session: ' . $post_id->get_error_message() ); } if ( ! empty( $args['attachment_id'] ) ) { wp_update_post( array( 'ID' => $post_id, 'post_parent' => $args['attachment_id'], ) ); } return new self( $post_id ); } /** * Gets an existing import session by ID. * * @param int $post_id The import session post ID * * @return WP_Import_Model|null The import model instance or null if not found */ public static function by_id( $post_id ) { $post = get_post( $post_id ); if ( ! $post || $post->post_type !== self::POST_TYPE ) { return false; } return new self( $post_id ); } /** * Gets the most recent active import session. * * @return WP_Import_Session|null The most recent import or null if none found */ public static function get_active() { $posts = get_posts( array( 'post_type' => self::POST_TYPE, 'post_status' => array( 'publish' ), 'posts_per_page' => 1, 'orderby' => 'date', 'order' => 'DESC', 'meta_query' => array( // @TODO: This somehow makes $post empty. // array( // 'key' => 'current_stage', // 'value' => WP_Stream_Importer::STAGE_FINISHED, // 'compare' => '!=' // ) ), ) ); if ( empty( $posts ) ) { return false; } return new self( $posts[0]->ID ); } public function __construct( $post_id ) { $this->post_id = $post_id; } /** * Gets the import session ID. * * @return int The post ID */ public function get_id() { return $this->post_id; } public function get_metadata() { $cursor = $this->get_reentrancy_cursor(); return array( 'post_id' => $this->post_id, 'cursor' => $cursor ? $cursor : null, 'data_source' => get_post_meta( $this->post_id, 'data_source', true ), 'source_url' => get_post_meta( $this->post_id, 'source_url', true ), 'attachment_id' => get_post_meta( $this->post_id, 'attachment_id', true ), ); } public function get_data_source() { return get_post_meta( $this->post_id, 'data_source', true ); } public function get_human_readable_file_reference() { switch ( $this->get_data_source() ) { case 'wxr_file': case 'markdown_zip': return get_post_meta( $this->post_id, 'file_name', true ); case 'wxr_url': return get_post_meta( $this->post_id, 'source_url', true ); } return ''; } public function archive() { wp_update_post( array( 'ID' => $this->post_id, 'post_status' => 'archived', ) ); } /** * Gets the current progress information. * * @return array The progress data */ public function count_imported_entities() { $progress = array(); foreach ( self::PROGRESS_ENTITIES as $entity ) { $progress[] = array( 'label' => $entity, 'imported' => (int) get_post_meta( $this->post_id, 'imported_' . $entity, true ), 'total' => (int) get_post_meta( $this->post_id, 'total_' . $entity, true ), ); } return $progress; } public function count_all_imported_entities() { $counts = $this->count_imported_entities(); return array_sum( array_column( $counts, 'imported' ) ); } public function count_all_total_entities() { $counts = $this->count_imported_entities(); return array_sum( array_column( $counts, 'total' ) ); } public function count_remaining_entities() { $counts = $this->count_imported_entities(); return array_sum( array_column( $counts, 'total' ) ) - array_sum( array_column( $counts, 'imported' ) ); } /** * Cache of imported entity counts to avoid repeated database queries * * @var array */ private $cached_imported_counts = array(); /** * Updates the progress information. * * @param array $newly_imported_entities The new progress data with keys: posts, comments, terms, attachments, users */ public function bump_imported_entities_counts( $newly_imported_entities ) { foreach ( $newly_imported_entities as $field => $count ) { if ( ! in_array( $field, static::PROGRESS_ENTITIES, true ) ) { _doing_it_wrong( __METHOD__, 'Cannot bump imported entities count for unknown entity type: ' . $field, '1.0.0' ); continue; } // Get current count from cache or database if ( ! isset( $this->cached_imported_counts[ $field ] ) ) { $this->cached_imported_counts[ $field ] = (int) get_post_meta( $this->post_id, 'imported_' . $field, true ); } // Add new count to total $new_count = $this->cached_imported_counts[ $field ] + $count; // Update database and cache update_post_meta( $this->post_id, 'imported_' . $field, $new_count ); $this->cached_imported_counts[ $field ] = $new_count; /* @TODO run an atomic query instead: $sql = $wpdb->prepare( "INSERT INTO {$wpdb->postmeta} (post_id, meta_key, meta_value) VALUES (%d, %s, %d) ON DUPLICATE KEY UPDATE meta_value = meta_value + %d", $this->post_id, 'imported_' . $field, $count, $count ); $wpdb->query($sql); */ } } public function count_awaiting_frontloading_stubs() { global $wpdb; return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->posts WHERE post_type = 'frontloading_stub' AND post_parent = %d AND post_status = %s", $this->post_id, self::FRONTLOAD_STATUS_AWAITING_DOWNLOAD ) ); } public function count_unfinished_frontloading_stubs() { global $wpdb; return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->posts WHERE post_type = 'frontloading_stub' AND post_parent = %d AND post_status != %s AND post_status != %s", $this->post_id, self::FRONTLOAD_STATUS_SUCCEEDED, self::FRONTLOAD_STATUS_IGNORED ) ); } public function mark_frontloading_errors_as_ignored() { global $wpdb; $wpdb->update( $wpdb->posts, array( 'post_status' => self::FRONTLOAD_STATUS_IGNORED ), array( 'post_type' => 'frontloading_stub', // 'post_status !=' => self::FRONTLOAD_STATUS_SUCCEEDED, ) ); } public function get_frontloading_stubs( $options = array() ) { $query = new WP_Query( array( 'post_type' => 'frontloading_stub', 'post_status' => 'any', 'post_parent' => $this->post_id, 'posts_per_page' => $options['per_page'] ?? 25, 'paged' => $options['page'] ?? 1, 'orderby' => array( 'post_status' => array( self::FRONTLOAD_STATUS_ERROR => 0, self::FRONTLOAD_STATUS_AWAITING_DOWNLOAD => 1, 'any' => 2, ), 'ID' => 'ASC', ), ) ); if ( ! $query->have_posts() ) { return array(); } $posts = $query->posts; $ids = array_map( function ( $post ) { return $post->ID; }, $posts ); update_meta_cache( 'post', $ids ); foreach ( $posts as $post ) { $post->meta = get_all_post_meta_flat( $post->ID ); } return $posts; } public function get_total_number_of_entities() { $totals = array(); foreach ( static::PROGRESS_ENTITIES as $field ) { $totals[ $field ] = (int) get_post_meta( $this->post_id, 'total_' . $field, true ); } $totals['download'] = $this->get_total_number_of_assets(); return $totals; } public function get_total_number_of_assets() { global $wpdb; return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->posts WHERE post_type = 'frontloading_stub' AND post_parent = %d", $this->post_id ) ); } public function get_frontloading_stub( $url ) { global $wpdb; $id = $wpdb->get_var( $wpdb->prepare( "SELECT p.ID FROM $wpdb->posts p INNER JOIN $wpdb->postmeta pm ON p.ID = pm.post_id WHERE p.post_type = 'frontloading_stub' AND p.post_parent = %d AND pm.meta_key = 'current_url' AND pm.meta_value = %s LIMIT 1", $this->post_id, $url ) ); return get_post( $id ); } /** * Creates placeholder attachments for the assets to be downloaded in the * frontloading stage. */ public function create_frontloading_stubs( $urls ) { global $wpdb; foreach ( $urls as $url => $_ ) { /** * Check if placeholder with this URL already exists * There's a race condition here – another insert may happen * between the check and the insert. * * @TODO: Explore solutions. A custom table with a UNIQUE constraint * may or may not be an option, depending on the performance impact * on 100GB+ VIP databases. */ $exists = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type = 'frontloading_stub' AND post_parent = %d AND guid = %s LIMIT 1", $this->post_id, $url ) ); if ( $exists ) { continue; } $post_data = array( 'post_type' => 'frontloading_stub', 'post_parent' => $this->post_id, 'post_title' => basename( $url ), 'post_status' => self::FRONTLOAD_STATUS_AWAITING_DOWNLOAD, 'guid' => $url, 'meta_input' => array( 'original_url' => $url, 'current_url' => $url, 'attempts' => 0, 'last_error' => null, 'target_path' => '', ), ); $insertion_result = wp_insert_post( $post_data ); if ( is_wp_error( $insertion_result ) ) { throw new \Exception( 'Failed to insert frontloading placeholder' ); } } } /** * Sets the total number of entities to import for each type. * * @param array $totals The total number of entities for each type */ private $cached_totals = array(); public function bump_total_number_of_entities( $newly_indexed_entities ) { foreach ( $newly_indexed_entities as $field => $count ) { if ( ! in_array( $field, static::PROGRESS_ENTITIES, true ) ) { _doing_it_wrong( __METHOD__, 'Cannot set total number of entities for unknown entity type: ' . $field, '1.0.0' ); continue; } // Get current total from cache or database if ( ! isset( $this->cached_totals[ $field ] ) ) { $this->cached_totals[ $field ] = (int) get_post_meta( $this->post_id, 'total_' . $field, true ); } // Add new count to total $new_total = $this->cached_totals[ $field ] + $count; // Update database and cache update_post_meta( $this->post_id, 'total_' . $field, $new_total ); $this->cached_totals[ $field ] = $new_total; } } /** * Saves an array of [$url => ['received' => $downloaded_bytes, 'total' => $total_bytes | null]] * of the currently fetched files. The list is ephemeral and changes as we stream the data. There * will never be more than $concurrency_limit files in the list at any given time. */ public function bump_frontloading_progress( $frontloading_progress, $events = array() ) { update_post_meta( $this->post_id, 'frontloading_progress', $frontloading_progress ); foreach ( $events as $event ) { $url = $event->resource_id; $placeholder = $this->get_frontloading_stub( $url ); if ( ! $placeholder ) { _doing_it_wrong( __METHOD__, 'Frontloading placeholder post not found for URL: ' . $url, '1.0.0' ); continue; } update_post_meta( $placeholder->ID, 'last_error', $event->error ); $attempts = get_post_meta( $placeholder->ID, 'attempts', true ); $new_attempts = $attempts; $new_status = $placeholder->post_status; switch ( $event->type ) { case self::EVENT_SUCCESS: $new_status = self::FRONTLOAD_STATUS_SUCCEEDED; $new_attempts = $attempts + 1; break; case self::EVENT_ALREADY_EXISTS: $new_status = self::FRONTLOAD_STATUS_SUCCEEDED; break; case self::EVENT_FAILURE: $new_status = self::FRONTLOAD_STATUS_ERROR; $new_attempts = $attempts + 1; break; } if ( $new_attempts !== $attempts ) { update_post_meta( $placeholder->ID, 'attempts', $new_attempts ); } if ( $new_status !== $placeholder->post_status ) { wp_update_post( array( 'ID' => $placeholder->ID, 'post_status' => $new_status, ) ); } } } public function get_frontloading_progress() { $meta = get_post_meta( $this->post_id, 'frontloading_progress', true ); return $meta ? $meta : array(); } public function is_stage_completed( $stage ) { $current_stage = $this->get_stage(); $stage_index = array_search( $stage, self::STAGES_IN_ORDER, true ); $current_stage_index = array_search( $current_stage, self::STAGES_IN_ORDER, true ); return $current_stage_index > $stage_index; } /** * Gets the current import stage. * * @return string The current stage */ public function get_stage() { if ( ! isset( $this->cached_stage ) ) { $meta = get_post_meta( $this->post_id, 'current_stage', true ); $this->cached_stage = $meta ? $meta : self::STAGE_INITIAL; } return $this->cached_stage; } /** * Updates the current import stage. * * @param string $stage The new stage */ public function set_stage( $stage ) { if ( $stage === $this->get_stage() ) { return; } if ( self::STAGE_FINISHED === $stage ) { update_post_meta( $this->post_id, 'finished_at', time() ); } update_post_meta( $this->post_id, 'current_stage', $stage ); $this->cached_stage = $stage; } public function get_started_at() { return get_post_meta( $this->post_id, 'started_at', true ); } public function get_finished_at() { return get_post_meta( $this->post_id, 'finished_at', true ); } public function is_finished() { return ! empty( get_post_meta( $this->post_id, 'finished_at', true ) ); } /** * Gets the importer cursor for resuming imports. * * @return string|null The cursor data */ public function get_reentrancy_cursor() { return get_post_meta( $this->post_id, 'importer_cursor', true ); } /** * Updates the importer cursor. * * @param string $cursor The new cursor data */ public function set_reentrancy_cursor( $cursor ) { // WordPress, sadly, removes single slashes from the meta value and // requires an addslashes() call to preserve them. update_post_meta( $this->post_id, 'importer_cursor', addslashes( $cursor ) ); } /** * Save the original command arguments for session resumption. * * @param array $args The original command arguments */ public function set_original_arguments( array $args ) { update_post_meta( $this->post_id, 'original_arguments', $args ); } /** * Get the original command arguments for session resumption. * * @return array|null The original arguments or null if not found */ public function get_original_arguments() { $args = get_post_meta( $this->post_id, 'original_arguments', true ); return ( is_array( $args ) && ! empty( $args ) ) ? $args : null; } }