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| 1 | <?php |
| 2 | /** |
| 3 | * Main |
| 4 | * |
| 5 | * @package VideoPressUploader |
| 6 | **/ |
| 7 | |
| 8 | namespace VideoPressUploader; |
| 9 | |
| 10 | // Avoid direct calls to this file. |
| 11 | if ( ! defined( 'ABSPATH' ) ) { |
| 12 | die( 0 ); |
| 13 | } |
| 14 | |
| 15 | /** |
| 16 | * Abstract cache class. |
| 17 | **/ |
| 18 | abstract class Tus_Abstract_Cache { |
| 19 | |
| 20 | /** |
| 21 | * Date format standard. |
| 22 | * |
| 23 | * @see https://tools.ietf.org/html/rfc7231#section-7.1.1.1 |
| 24 | * |
| 25 | * @var int |
| 26 | **/ |
| 27 | const RFC_7231 = 'D, d M Y H:i:s \G\M\T'; |
| 28 | |
| 29 | /** |
| 30 | * TTL in secs (default 1 day). |
| 31 | * |
| 32 | * @var int |
| 33 | **/ |
| 34 | protected $ttl = 86400; |
| 35 | |
| 36 | /** Prefix for cache keys. |
| 37 | * |
| 38 | * @var string |
| 39 | **/ |
| 40 | protected $prefix = 'videopress_uploader_1_'; |
| 41 | |
| 42 | /** |
| 43 | * Various blog_id. |
| 44 | * |
| 45 | * @var string |
| 46 | */ |
| 47 | protected $blog_id = 'simple'; |
| 48 | |
| 49 | /** |
| 50 | * Cache constructor. |
| 51 | * |
| 52 | * @param int|string $blog_id The blog_id. |
| 53 | */ |
| 54 | public function __construct( $blog_id ) { |
| 55 | $this->blog_id = (string) $blog_id; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Cache Get key. |
| 60 | * |
| 61 | * @param string $key The blog_id. |
| 62 | * |
| 63 | * @return mixed|null |
| 64 | */ |
| 65 | abstract protected function cache_get( $key ); |
| 66 | |
| 67 | /** |
| 68 | * Set data to the given key. |
| 69 | * |
| 70 | * @param string $key The key. |
| 71 | * @param mixed $value The value. |
| 72 | * @param bool $is_update Is update. |
| 73 | * |
| 74 | * @return mixed |
| 75 | */ |
| 76 | abstract public function cache_set( $key, $value, $is_update ); |
| 77 | |
| 78 | /** |
| 79 | * Delete data associated with the key. |
| 80 | * |
| 81 | * @param string $key The key. |
| 82 | * |
| 83 | * @return bool |
| 84 | */ |
| 85 | abstract public function cache_delete( $key ); |
| 86 | |
| 87 | /** |
| 88 | * Get cache keys. |
| 89 | * |
| 90 | * @param string $keys_prefix The key prefix. |
| 91 | * |
| 92 | * @return mixed |
| 93 | */ |
| 94 | abstract public function cache_keys( $keys_prefix ); |
| 95 | |
| 96 | /** |
| 97 | * Build a cache key. |
| 98 | * |
| 99 | * @param string $key Key. |
| 100 | * |
| 101 | * @return string |
| 102 | */ |
| 103 | public function build_key( $key ) { |
| 104 | $prefix = $this->get_prefix(); |
| 105 | |
| 106 | if ( ! str_starts_with( $key, $prefix ) ) { |
| 107 | $key = $prefix . $key; |
| 108 | } |
| 109 | |
| 110 | return $key; |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Get key. |
| 115 | * |
| 116 | * @param string $key The blog_id. |
| 117 | * @param bool $with_expired Even get the expired keys. |
| 118 | * |
| 119 | * @return mixed|null |
| 120 | */ |
| 121 | public function get( $key, $with_expired = false ) { |
| 122 | $key = $this->build_key( $key ); |
| 123 | |
| 124 | $contents_str = $this->cache_get( $key ); |
| 125 | $contents = json_decode( $contents_str, true ); |
| 126 | |
| 127 | if ( ! $contents ) { |
| 128 | return null; |
| 129 | } |
| 130 | |
| 131 | if ( $with_expired ) { |
| 132 | return $contents; |
| 133 | } |
| 134 | |
| 135 | return $this->is_content_expired( $contents ) ? null : $contents; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Deletes a key. |
| 140 | * |
| 141 | * @param string $key The key. |
| 142 | * |
| 143 | * @return mixed |
| 144 | */ |
| 145 | public function delete( $key ) { |
| 146 | $key = $this->build_key( $key ); |
| 147 | return $this->cache_delete( $key ) > 0; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Set cache key. |
| 152 | * |
| 153 | * @param string $key The key. |
| 154 | * @param array|mixed $value Even get the expired key. |
| 155 | * |
| 156 | * @return bool |
| 157 | */ |
| 158 | public function set( $key, $value ) { |
| 159 | $key = $this->build_key( $key ); |
| 160 | $cache_data = $this->get( $key ); |
| 161 | $contents = $cache_data ? $cache_data : array(); |
| 162 | |
| 163 | if ( \is_array( $value ) ) { |
| 164 | $contents = array_merge( $contents, $value ); |
| 165 | } else { |
| 166 | $contents[] = $value; |
| 167 | } |
| 168 | |
| 169 | $status = $this->cache_set( $key, \wp_json_encode( $contents, JSON_UNESCAPED_SLASHES ), ! empty( $cache_data ) ); |
| 170 | return false !== $status; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Get cache keys. |
| 175 | * |
| 176 | * @return mixed |
| 177 | */ |
| 178 | public function keys() { |
| 179 | // TODO: This needs more thought. |
| 180 | $keys_entry = $this->cache_keys( 'videopress_cache_keys_blog_' . $this->blog_id ); |
| 181 | if ( is_string( $keys_entry ) ) { |
| 182 | return json_decode( $keys_entry ); |
| 183 | } |
| 184 | return $keys_entry; |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Delete all data associated with the keys. |
| 189 | * |
| 190 | * @param array $keys The keys to delete. |
| 191 | * |
| 192 | * @return bool |
| 193 | */ |
| 194 | public function delete_all( $keys ) { |
| 195 | $status = true; |
| 196 | |
| 197 | foreach ( $keys as $key ) { |
| 198 | $r = $this->delete( $this->build_key( $key ) ); |
| 199 | $status = $status && $r; |
| 200 | } |
| 201 | |
| 202 | return $status; |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Get time to live. |
| 207 | * |
| 208 | * @return int |
| 209 | */ |
| 210 | public function get_ttl() { |
| 211 | return $this->ttl; |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Set time to live. |
| 216 | * |
| 217 | * @param int $secs The ttl. |
| 218 | * |
| 219 | * @return self |
| 220 | */ |
| 221 | public function set_ttl( $secs ) { |
| 222 | $this->ttl = $secs; |
| 223 | |
| 224 | return $this; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Set cache prefix. |
| 229 | * |
| 230 | * @param string $prefix The prefix. |
| 231 | * |
| 232 | * @return self |
| 233 | */ |
| 234 | public function set_prefix( $prefix ) { |
| 235 | $this->prefix = $prefix; |
| 236 | return $this; |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * Get cache prefix. |
| 241 | * |
| 242 | * @return string |
| 243 | */ |
| 244 | public function get_prefix() { |
| 245 | /** |
| 246 | * Filters the cache prefix that will be used for VideoPress Uploader. |
| 247 | * |
| 248 | * @param string $cache_prefix The cache prefix. |
| 249 | * |
| 250 | * @return string |
| 251 | */ |
| 252 | return apply_filters( 'videopress_uploader_cache_prefix', $this->prefix ); |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Log stuff |
| 257 | * |
| 258 | * @param string $what Stuff to log. |
| 259 | */ |
| 260 | protected function log( $what ) { |
| 261 | // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_print_r |
| 262 | do_action( 'videopress_uploader_log', 'info', get_class( $this ) . ' Cache Store: \n\n' . print_r( $what, true ) ); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Checks if content has an expires_at entry and compares to time(). |
| 267 | * |
| 268 | * @param array $contents The contents. |
| 269 | * |
| 270 | * @return bool |
| 271 | **/ |
| 272 | protected function is_content_expired( $contents ) { |
| 273 | if ( ! isset( $contents['expires_at'] ) ) { |
| 274 | return false; |
| 275 | } |
| 276 | |
| 277 | $expires_at = $contents['expires_at']; |
| 278 | $date = Tus_Date_Utils::date_utc( $expires_at ); |
| 279 | |
| 280 | return absint( $date->getTimestamp() ) < time(); |
| 281 | } |
| 282 | } |