Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
100.00% |
28 / 28 |
|
100.00% |
9 / 9 |
CRAP | |
100.00% |
1 / 1 |
| File_Paths | |
100.00% |
28 / 28 |
|
100.00% |
9 / 9 |
15 | |
100.00% |
1 / 1 |
| set | |
100.00% |
3 / 3 |
|
100.00% |
1 / 1 |
1 | |||
| jsonSerialize | |
100.00% |
5 / 5 |
|
100.00% |
1 / 1 |
1 | |||
| get_paths | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| jsonUnserialize | |
100.00% |
3 / 3 |
|
100.00% |
1 / 1 |
1 | |||
| is_id | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| get_issued | |
100.00% |
8 / 8 |
|
100.00% |
1 / 1 |
4 | |||
| find_issued | |
100.00% |
4 / 4 |
|
100.00% |
1 / 1 |
4 | |||
| generate_cache_id | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
1 | |||
| cache_prefix | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| 1 | <?php |
| 2 | |
| 3 | namespace Automattic\Jetpack_Boost\Lib\Minify; |
| 4 | |
| 5 | use Automattic\Jetpack\Boost_Core\Lib\Cacheable; |
| 6 | use Automattic\Jetpack\Boost_Core\Lib\Transient; |
| 7 | |
| 8 | /** |
| 9 | * Store the hash of the path string so that the concatenated file can be constructed |
| 10 | * on-demand. |
| 11 | * |
| 12 | * We are setting the transient for a long time because, if the content of the hash is not accessible, the concatenated file |
| 13 | * will not be able to construct itself. Because of page caching, there may be situations where this function will not |
| 14 | * get called for a long time, and we still want to serve the concatenated file in those cases. Having the value in |
| 15 | * a Boost Transient ensures that the value is cleaned up when Boost is uninstalled. |
| 16 | * |
| 17 | * Only lists stored here are built. |
| 18 | */ |
| 19 | final class File_Paths extends Cacheable { |
| 20 | private $paths; |
| 21 | private $mtime; |
| 22 | private $cache_buster; |
| 23 | |
| 24 | protected const DEFAULT_EXPIRY = MONTH_IN_SECONDS; |
| 25 | |
| 26 | public function set( $paths, $mtime, $cache_buster ) { |
| 27 | $this->paths = $paths; |
| 28 | $this->mtime = $mtime; |
| 29 | $this->cache_buster = $cache_buster; |
| 30 | } |
| 31 | |
| 32 | public function jsonSerialize(): array { |
| 33 | return array( |
| 34 | 'paths' => $this->paths, |
| 35 | 'mtime' => $this->mtime, |
| 36 | 'cache_buster' => $this->cache_buster, |
| 37 | ); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Get an array of file paths that belong to the same hash. |
| 42 | * |
| 43 | * @return array Array of file paths relative to the webroot. |
| 44 | */ |
| 45 | public function get_paths() { |
| 46 | return $this->paths; |
| 47 | } |
| 48 | |
| 49 | public static function jsonUnserialize( $data ) { |
| 50 | $instance = new self(); |
| 51 | $instance->set( $data['paths'], $data['mtime'], $data['cache_buster'] ); |
| 52 | return $instance; |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Whether a string has the form of the IDs generate_cache_id() produces. |
| 57 | * |
| 58 | * @param string $id The string to check. |
| 59 | * |
| 60 | * @return bool |
| 61 | */ |
| 62 | public static function is_id( $id ) { |
| 63 | return 1 === preg_match( '/^[0-9a-f]{10}$/D', $id ); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Get a stored list by its ID. |
| 68 | * |
| 69 | * @param string $id The list ID. |
| 70 | * |
| 71 | * @return self|null |
| 72 | */ |
| 73 | public static function get_issued( $id ) { |
| 74 | $issued = self::get( $id ); |
| 75 | |
| 76 | if ( ! $issued ) { |
| 77 | // WordPress notes every missing option in one shared cache entry, which made-up IDs would keep growing. |
| 78 | $missing_options = wp_cache_get( 'notoptions', 'options' ); |
| 79 | $option_name = Transient::key( self::cache_prefix() . $id ); |
| 80 | if ( is_array( $missing_options ) && isset( $missing_options[ $option_name ] ) ) { |
| 81 | unset( $missing_options[ $option_name ] ); |
| 82 | wp_cache_set( 'notoptions', $missing_options, 'options' ); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | return $issued; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Find the stored list holding exactly these paths, by the ID built from them, their newest modification time and the current cache buster. |
| 91 | * |
| 92 | * @param string[] $paths File paths in list order. |
| 93 | * @param int $mtime Newest modification time of the files. |
| 94 | * @param int $cache_buster Current cache buster. |
| 95 | * |
| 96 | * @return self|null |
| 97 | */ |
| 98 | public static function find_issued( $paths, $mtime, $cache_buster ) { |
| 99 | $candidate = new self(); |
| 100 | $candidate->set( $paths, $mtime, $cache_buster ); |
| 101 | |
| 102 | $issued = self::get_issued( $candidate->generate_cache_id() ); |
| 103 | |
| 104 | // IDs are short enough for different lists to share one, so compare the lists as well. |
| 105 | // Stored stylesheet lists are keyed by handle, so only the values and their order count. |
| 106 | return $issued && is_array( $issued->get_paths() ) && array_values( $issued->get_paths() ) === $paths ? $issued : null; |
| 107 | } |
| 108 | |
| 109 | protected function generate_cache_id() { |
| 110 | $hash = md5( implode( ',', $this->paths ) . '_' . $this->mtime . '_' . $this->cache_buster ); |
| 111 | |
| 112 | // Keep cache id small as option keys have a character limit. |
| 113 | return substr( $hash, 0, 10 ); |
| 114 | } |
| 115 | |
| 116 | protected static function cache_prefix() { |
| 117 | return 'concat_paths_'; |
| 118 | } |
| 119 | } |