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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Redis-backed configuration storage |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2026-02-23 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Configuration\Storage; |
| 21 | |
| 22 | use Redis; |
| 23 | use RedisException; |
| 24 | use RuntimeException; |
| 25 | |
| 26 | class RedisConfigurationStore implements ConfigurationStoreInterface |
| 27 | { |
| 28 | private ?Redis $redisClient = null; |
| 29 | |
| 30 | public function __construct( |
| 31 | private readonly ConfigurationStorageSettings $settings, |
| 32 | ) { |
| 33 | } |
| 34 | |
| 35 | public function updateConfigValue(string $key, string $value): bool |
| 36 | { |
| 37 | try { |
| 38 | $redis = $this->getRedisClient(); |
| 39 | return false !== $redis->hSet($this->getHashKey(), $key, $value); |
| 40 | } catch (RedisException $e) { |
| 41 | throw new RuntimeException('Redis updateConfigValue failed: ' . $e->getMessage(), 0, $e); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * @return array<int, \stdClass> |
| 47 | */ |
| 48 | public function fetchAll(): array |
| 49 | { |
| 50 | try { |
| 51 | $redis = $this->getRedisClient(); |
| 52 | $entries = $redis->hGetAll($this->getHashKey()); |
| 53 | if (!is_array($entries) || $entries === []) { |
| 54 | return []; |
| 55 | } |
| 56 | |
| 57 | $rows = []; |
| 58 | foreach ($entries as $name => $value) { |
| 59 | $rows[] = (object) [ |
| 60 | 'config_name' => (string) $name, |
| 61 | 'config_value' => (string) $value, |
| 62 | ]; |
| 63 | } |
| 64 | |
| 65 | return $rows; |
| 66 | } catch (RedisException $e) { |
| 67 | throw new RuntimeException('Redis fetchAll failed: ' . $e->getMessage(), 0, $e); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | public function insert(string $name, string $value): bool |
| 72 | { |
| 73 | try { |
| 74 | $redis = $this->getRedisClient(); |
| 75 | return (bool) $redis->hSetNx($this->getHashKey(), $name, $value); |
| 76 | } catch (RedisException $e) { |
| 77 | throw new RuntimeException('Redis insert failed: ' . $e->getMessage(), 0, $e); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | public function delete(string $name): bool |
| 82 | { |
| 83 | try { |
| 84 | $redis = $this->getRedisClient(); |
| 85 | $result = $redis->hDel($this->getHashKey(), $name); |
| 86 | return $result !== false && $result > 0; |
| 87 | } catch (RedisException $e) { |
| 88 | throw new RuntimeException('Redis delete failed: ' . $e->getMessage(), 0, $e); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | public function renameKey(string $currentKey, string $newKey): bool |
| 93 | { |
| 94 | try { |
| 95 | $redis = $this->getRedisClient(); |
| 96 | $oldValue = $redis->hGet($this->getHashKey(), $currentKey); |
| 97 | if ($oldValue === false) { |
| 98 | return false; |
| 99 | } |
| 100 | |
| 101 | $setResult = $redis->hSet($this->getHashKey(), $newKey, (string) $oldValue); |
| 102 | if ($setResult === false) { |
| 103 | return false; |
| 104 | } |
| 105 | |
| 106 | if ((int) $redis->hDel($this->getHashKey(), $currentKey) < 1) { |
| 107 | $redis->hDel($this->getHashKey(), $newKey); |
| 108 | return false; |
| 109 | } |
| 110 | |
| 111 | return true; |
| 112 | } catch (RedisException $e) { |
| 113 | throw new RuntimeException('Redis renameKey failed: ' . $e->getMessage(), 0, $e); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | public function getInstalledRedisVersion(): string |
| 118 | { |
| 119 | try { |
| 120 | $redis = $this->getRedisClient(); |
| 121 | $serverInfo = $redis->info('server'); |
| 122 | |
| 123 | $serverVersion = 'unknown'; |
| 124 | if (is_array($serverInfo) && array_key_exists('redis_version', $serverInfo)) { |
| 125 | $serverVersion = (string) $serverInfo['redis_version']; |
| 126 | } |
| 127 | $configuredExtensionVersion = phpversion('redis'); |
| 128 | $extensionVersion = $configuredExtensionVersion !== false ? $configuredExtensionVersion : 'unknown'; |
| 129 | |
| 130 | return sprintf('%s (ext-redis %s)', $serverVersion, $extensionVersion); |
| 131 | } catch (RedisException $e) { |
| 132 | throw new RuntimeException('Redis getInstalledRedisVersion failed: ' . $e->getMessage(), 0, $e); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * @param array<int, \stdClass> $rows |
| 138 | */ |
| 139 | public function warmFromRows(array $rows): bool |
| 140 | { |
| 141 | if ($rows === []) { |
| 142 | return true; |
| 143 | } |
| 144 | |
| 145 | try { |
| 146 | $redis = $this->getRedisClient(); |
| 147 | $keyValueMap = []; |
| 148 | foreach ($rows as $row) { |
| 149 | if (!property_exists($row, 'config_name') || $row->config_name === null) { |
| 150 | continue; |
| 151 | } |
| 152 | |
| 153 | $keyValueMap[(string) $row->config_name] = (string) ($row->config_value ?? ''); |
| 154 | } |
| 155 | |
| 156 | if ($keyValueMap === []) { |
| 157 | return true; |
| 158 | } |
| 159 | |
| 160 | $hashKey = $this->getHashKey(); |
| 161 | $redis->multi(); |
| 162 | $redis->del($hashKey); |
| 163 | $redis->hMSet($hashKey, $keyValueMap); |
| 164 | $results = $redis->exec(); |
| 165 | |
| 166 | return is_array($results) && ($results[1] ?? null) !== false; |
| 167 | } catch (RedisException $e) { |
| 168 | throw new RuntimeException('Redis warmFromRows failed: ' . $e->getMessage(), 0, $e); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | private function getRedisClient(): Redis |
| 173 | { |
| 174 | if ($this->redisClient === null) { |
| 175 | $this->redisClient = $this->createRedisClient(); |
| 176 | } |
| 177 | |
| 178 | return $this->redisClient; |
| 179 | } |
| 180 | |
| 181 | private function getHashKey(): string |
| 182 | { |
| 183 | return $this->settings->redisPrefix . 'items'; |
| 184 | } |
| 185 | |
| 186 | private function createRedisClient(): Redis |
| 187 | { |
| 188 | if (!extension_loaded('redis')) { |
| 189 | throw new RuntimeException('Redis configuration storage requires the PHP redis extension (ext-redis).'); |
| 190 | } |
| 191 | |
| 192 | $parsedUrl = parse_url($this->settings->redisDsn); |
| 193 | if ($parsedUrl === false || !array_key_exists('scheme', $parsedUrl)) { |
| 194 | throw new RuntimeException('Invalid Redis DSN for configuration storage.'); |
| 195 | } |
| 196 | |
| 197 | try { |
| 198 | $redis = new Redis(); |
| 199 | $scheme = strtolower($parsedUrl['scheme']); |
| 200 | $timeout = $this->settings->connectTimeout; |
| 201 | |
| 202 | if ($scheme === 'redis' || $scheme === 'tcp') { |
| 203 | $host = $parsedUrl['host'] ?? '127.0.0.1'; |
| 204 | $port = (int) ($parsedUrl['port'] ?? 6379); |
| 205 | $connected = $redis->connect($host, $port, $timeout); |
| 206 | if ($connected !== true) { |
| 207 | throw new RuntimeException(sprintf('Unable to connect to Redis at %s:%d', $host, $port)); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | if ($scheme === 'unix') { |
| 212 | $path = $parsedUrl['path'] ?? ''; |
| 213 | if ($path === '') { |
| 214 | throw new RuntimeException('Invalid Redis unix socket DSN for configuration storage.'); |
| 215 | } |
| 216 | |
| 217 | $connected = $redis->connect($path, 0, $timeout); |
| 218 | if ($connected !== true) { |
| 219 | throw new RuntimeException(sprintf('Unable to connect to Redis unix socket at %s', $path)); |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | if ($scheme !== 'redis' && $scheme !== 'tcp' && $scheme !== 'unix') { |
| 224 | throw new RuntimeException(sprintf( |
| 225 | 'Unsupported Redis DSN scheme "%s" for configuration storage.', |
| 226 | $scheme, |
| 227 | )); |
| 228 | } |
| 229 | |
| 230 | if (array_key_exists('pass', $parsedUrl) && $parsedUrl['pass'] !== '') { |
| 231 | $pass = urldecode($parsedUrl['pass']); |
| 232 | $authResult = $redis->auth($pass); |
| 233 | if (array_key_exists('user', $parsedUrl) && $parsedUrl['user'] !== '') { |
| 234 | $user = urldecode($parsedUrl['user']); |
| 235 | $authResult = $redis->auth([$user, $pass]); |
| 236 | } |
| 237 | |
| 238 | if ($authResult !== true) { |
| 239 | throw new RuntimeException('Redis authentication failed for configuration storage.'); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | $database = 0; |
| 244 | if (array_key_exists('query', $parsedUrl)) { |
| 245 | $queryParams = []; |
| 246 | parse_str($parsedUrl['query'], $queryParams); |
| 247 | $database = (int) ($queryParams['database'] ?? $queryParams['db'] ?? 0); |
| 248 | } |
| 249 | |
| 250 | if ($redis->select($database) !== true) { |
| 251 | throw new RuntimeException(sprintf( |
| 252 | 'Failed to select Redis database %d for configuration storage.', |
| 253 | $database, |
| 254 | )); |
| 255 | } |
| 256 | |
| 257 | $readTimeout = $timeout > 0 ? $timeout : (float) ini_get('default_socket_timeout'); |
| 258 | $redis->setOption(Redis::OPT_READ_TIMEOUT, $readTimeout); |
| 259 | |
| 260 | return $redis; |
| 261 | } catch (RedisException $e) { |
| 262 | throw new RuntimeException('Redis connection failed: ' . $e->getMessage(), 0, $e); |
| 263 | } |
| 264 | } |
| 265 | } |