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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\View\Cache; |
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use DateInterval; |
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use InvalidArgumentException; |
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use Yiisoft\Cache\CacheInterface; |
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use Yiisoft\Cache\CacheKeyNormalizer; |
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use Yiisoft\Cache\Dependency\Dependency; |
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use function array_merge; |
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use function get_class; |
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use function gettype; |
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use function is_string; |
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use function is_object; |
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use function sprintf; |
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use function strtr; |
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/** |
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* CacheContent caches content, supports the use of dynamic content {@see DynamicContent} inside cached content. |
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*/ |
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final class CachedContent |
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{ |
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private string $id; |
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private CacheInterface $cache; |
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private CacheKeyNormalizer $cacheKeyNormalizer; |
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/** |
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* @var array<string, DynamicContent> |
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*/ |
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private array $dynamicContents = []; |
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/** |
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* @var string[] |
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*/ |
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private array $variations = []; |
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/** |
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* @param string $id The unique identifier of the cached content. |
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* @param CacheInterface $cache The cache instance. |
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* @param DynamicContent[] $dynamicContents The dynamic content instances. |
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* @param string[] $variations List of string factors that would cause the variation of the content being cached. |
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*/ |
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public function __construct(string $id, CacheInterface $cache, array $dynamicContents = [], array $variations = []) |
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{ |
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$this->id = $id; |
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$this->cache = $cache; |
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$this->cacheKeyNormalizer = new CacheKeyNormalizer(); |
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$this->setDynamicContents($dynamicContents); |
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$this->setVariations($variations); |
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} |
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/** |
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* Caches, replaces placeholders with actual dynamic content, and returns the full actual content. |
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* |
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* @param string $content The content of the item to cache store. |
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* @param DateInterval|int|null $ttl The TTL of the cached content. |
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* @param Dependency|null $dependency The dependency of the cached content. |
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* @param float $beta The value for calculating the range that is used for "Probably early expiration". |
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* |
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* @see CacheInterface::getOrSet() |
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* |
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* @return string The rendered cached content. |
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*/ |
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public function cache(string $content, $ttl = 60, Dependency $dependency = null, float $beta = 1.0): string |
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{ |
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return $this->replaceDynamicPlaceholders( |
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$this->cache->getOrSet($this->cacheKey(), static fn (): string => $content, $ttl, $dependency, $beta), |
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); |
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} |
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/** |
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* Returns cached content with placeholders replaced with actual dynamic content. |
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* |
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* @return string|null The cached content. Null is returned if valid content is not found in the cache. |
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*/ |
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public function get(): ?string |
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{ |
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$content = $this->cache->psr()->get($this->cacheKey()); |
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if ($content === null) { |
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return null; |
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} |
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return $this->replaceDynamicPlaceholders($content); |
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} |
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/** |
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* Generates a unique key used for storing the content in cache. |
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* |
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* @return string A valid cache key. |
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*/ |
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private function cacheKey(): string |
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{ |
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return $this->cacheKeyNormalizer->normalize(array_merge([__CLASS__, $this->id], $this->variations)); |
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} |
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/** |
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* Replaces placeholders with actual dynamic content. |
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* |
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* @param string $content The content to be replaced. |
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* |
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* @return string The content with replaced placeholders. |
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*/ |
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private function replaceDynamicPlaceholders(string $content): string |
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{ |
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$dynamicContents = []; |
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foreach ($this->dynamicContents as $dynamicContent) { |
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$dynamicContents[$dynamicContent->placeholder()] = $dynamicContent->content(); |
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} |
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if (!empty($dynamicContents)) { |
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$content = strtr($content, $dynamicContents); |
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} |
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return $content; |
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} |
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/** |
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* Sets dynamic content instances. |
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* |
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* @param array $dynamicContents The dynamic content instances to set. |
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*/ |
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private function setDynamicContents(array $dynamicContents): void |
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{ |
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foreach ($dynamicContents as $dynamicContent) { |
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if (!($dynamicContent instanceof DynamicContent)) { |
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throw new InvalidArgumentException(sprintf( |
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'Invalid dynamic content "%s" specified. It must be a "%s" instance.', |
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is_object($dynamicContent) ? get_class($dynamicContent) : gettype($dynamicContent), |
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DynamicContent::class, |
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)); |
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} |
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$this->dynamicContents[$dynamicContent->id()] = $dynamicContent; |
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} |
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} |
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/** |
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* Sets variations. |
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* |
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* @param array $variations The variations to set. |
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*/ |
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private function setVariations(array $variations): void |
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{ |
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foreach ($variations as $variation) { |
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if (!is_string($variation)) { |
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throw new InvalidArgumentException(sprintf( |
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'Invalid variation "%s" specified. It must be a string type.', |
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is_object($variation) ? get_class($variation) : gettype($variation), |
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)); |
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} |
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$this->variations[] = $variation; |
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} |
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} |
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} |
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yiisoft /
view
