+global\Jetpack_RelatedPosts::_get_related_post_ids()

Complexity

Conditions	19
Paths	66

Size

Total Lines	94
Code Lines	54

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
	protected function _get_related_post_ids( $post_id, $size, array $filters ) {
		$now_ts = time();
		$cache_meta_key = '_jetpack_related_posts_cache';

		$body = array(
			'size' => (int) $size,
		);

		if ( !empty( $filters ) )
			$body['filter'] = array( 'and' => $filters );

		// Build cache key
		$cache_key = md5( serialize( $body ) );

		// Load all cached values
		if ( wp_using_ext_object_cache() ) {
			$transient_name = "{$cache_meta_key}_{$cache_key}_{$post_id}";
			$cache = get_transient( $transient_name );
			if ( false !== $cache ) {
				return $cache;
			}
		} else {
			$cache = get_post_meta( $post_id, $cache_meta_key, true );

			if ( empty( $cache ) )
				$cache = array();


			// Cache is valid! Return cached value.
			if ( isset( $cache[ $cache_key ] ) && is_array( $cache[ $cache_key ] ) && $cache[ $cache_key ][ 'expires' ] > $now_ts ) {
				return $cache[ $cache_key ][ 'payload' ];
			}
		}

		$response = wp_remote_post(
			"https://public-api.wordpress.com/rest/v1/sites/{$this->_blog_id_wpcom}/posts/$post_id/related/",
			array(
				'timeout' => 10,
				'user-agent' => 'jetpack_related_posts',
				'sslverify' => true,
				'body' => $body,
			)
		);

		// Oh no... return nothing don't cache errors.
		if ( is_wp_error( $response ) ) {
			if ( isset( $cache[ $cache_key ] ) && is_array( $cache[ $cache_key ] ) )
				return $cache[ $cache_key ][ 'payload' ]; // return stale
			else
				return array();
		}

		$results = json_decode( wp_remote_retrieve_body( $response ), true );
		$related_posts = array();
		if ( is_array( $results ) && !empty( $results['hits'] ) ) {
			foreach( $results['hits'] as $hit ) {
				$related_posts[] = array(
					'id' => $hit['fields']['post_id'],
				);
			}
		}

		// An empty array might indicate no related posts or that posts
		// are not yet synced to WordPress.com, so we cache for only 1
		// minute in this case
		if ( empty( $related_posts ) ) {
			$cache_ttl = 60;
		} else {
			$cache_ttl = 12 * HOUR_IN_SECONDS;
		}

		// Update cache
		if ( wp_using_ext_object_cache() ) {
			set_transient( $transient_name, $related_posts, $cache_ttl );

The variable $transient_name does not seem to be defined for all execution paths leading up to this point.

		} else {
			// Copy all valid cache values
			$new_cache = array();
			foreach ( $cache as $k => $v ) {
				if ( is_array( $v ) && $v[ 'expires' ] > $now_ts ) {
					$new_cache[ $k ] = $v;
				}
			}

			// Set new cache value
			$cache_expires = $cache_ttl + $now_ts;
			$new_cache[ $cache_key ] = array(
				'expires' => $cache_expires,
				'payload' => $related_posts,
			);
			update_post_meta( $post_id, $cache_meta_key, $new_cache );
		}

		return $related_posts;
	}