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| 1 | +<?php |
| 2 | + |
| 3 | +/* |
| 4 | + * This file is part of the zenstruck/filesystem package. |
| 5 | + * |
| 6 | + * (c) Kevin Bond <kevinbond@gmail.com> |
| 7 | + * |
| 8 | + * For the full copyright and license information, please view the LICENSE |
| 9 | + * file that was distributed with this source code. |
| 10 | + */ |
| 11 | + |
| 12 | +namespace Zenstruck\Filesystem; |
| 13 | + |
| 14 | +use Psr\Cache\CacheItemInterface; |
| 15 | +use Psr\Cache\CacheItemPoolInterface; |
| 16 | +use Symfony\Contracts\Cache\ItemInterface; |
| 17 | +use Symfony\Contracts\Cache\TagAwareCacheInterface; |
| 18 | +use Zenstruck\Filesystem; |
| 19 | +use Zenstruck\Filesystem\Node\Directory; |
| 20 | +use Zenstruck\Filesystem\Node\File; |
| 21 | +use Zenstruck\Filesystem\Node\File\Image; |
| 22 | +use Zenstruck\Filesystem\Node\File\Image\LazyImage; |
| 23 | +use Zenstruck\Filesystem\Node\File\LazyFile; |
| 24 | +use Zenstruck\Filesystem\Node\Mapping; |
| 25 | + |
| 26 | +/** |
| 27 | + * @author Kevin Bond <kevinbond@gmail.com> |
| 28 | + * |
| 29 | + * @phpstan-import-type Format from Mapping |
| 30 | + * @phpstan-import-type Serialized from Mapping |
| 31 | + */ |
| 32 | +final class CacheFilesystem implements Filesystem |
| 33 | +{ |
| 34 | + use DecoratedFilesystem; |
| 35 | + |
| 36 | + private Mapping $mapping; |
| 37 | + |
| 38 | + /** |
| 39 | + * @param Format $metadata |
| 40 | + */ |
| 41 | + public function __construct( |
| 42 | + private Filesystem $inner, |
| 43 | + private CacheItemPoolInterface $cache, |
| 44 | + array|string $metadata, |
| 45 | + private ?int $ttl = null, |
| 46 | + ) { |
| 47 | + // ensure PATH is always included |
| 48 | + if (\is_string($metadata) && Mapping::PATH !== $metadata) { |
| 49 | + $metadata = \array_merge((array) $metadata, [Mapping::PATH]); |
| 50 | + } |
| 51 | + |
| 52 | + if (\is_array($metadata) && !\in_array(Mapping::PATH, $metadata, true)) { |
| 53 | + $metadata[] = Mapping::PATH; |
| 54 | + } |
| 55 | + |
| 56 | + $this->mapping = new Mapping($metadata, filesystem: '__none__'); // dummy filesystem as it's required if not using a dsn (todo: remove this requirement) |
| 57 | + } |
| 58 | + |
| 59 | + public function node(string $path): File|Directory |
| 60 | + { |
| 61 | + $item = $this->cache->getItem($this->cacheKey($path)); |
| 62 | + |
| 63 | + if ($item->isHit() && $file = $this->unserialize($item->get())) { |
| 64 | + return $file; |
| 65 | + } |
| 66 | + |
| 67 | + $node = $this->inner->node($path); |
| 68 | + |
| 69 | + if ($node instanceof Directory) { |
| 70 | + // directories are not cached |
| 71 | + return $node; |
| 72 | + } |
| 73 | + |
| 74 | + return $this->cache($node, $item); |
| 75 | + } |
| 76 | + |
| 77 | + public function file(string $path): File |
| 78 | + { |
| 79 | + return $this->node($path)->ensureFile(); |
| 80 | + } |
| 81 | + |
| 82 | + public function image(string $path): Image |
| 83 | + { |
| 84 | + return $this->node($path)->ensureImage(); |
| 85 | + } |
| 86 | + |
| 87 | + public function has(string $path): bool |
| 88 | + { |
| 89 | + if ($this->cache->hasItem($this->cacheKey($path))) { |
| 90 | + return true; |
| 91 | + } |
| 92 | + |
| 93 | + return $this->inner->has($path); |
| 94 | + } |
| 95 | + |
| 96 | + public function copy(string $source, string $destination, array $config = []): File |
| 97 | + { |
| 98 | + return $this->cache($this->inner->copy($source, $destination, $config)); |
| 99 | + } |
| 100 | + |
| 101 | + public function move(string $source, string $destination, array $config = []): File |
| 102 | + { |
| 103 | + try { |
| 104 | + return $this->cache($this->inner->move($source, $destination, $config)); |
| 105 | + } finally { |
| 106 | + $this->cache->deleteItem($this->cacheKey($source)); |
| 107 | + } |
| 108 | + } |
| 109 | + |
| 110 | + public function delete(string $path, array $config = []): self |
| 111 | + { |
| 112 | + $this->inner->delete($path, $config); |
| 113 | + $this->cache->deleteItem($this->cacheKey($path)); |
| 114 | + |
| 115 | + return $this; |
| 116 | + } |
| 117 | + |
| 118 | + public function chmod(string $path, string $visibility): File|Directory |
| 119 | + { |
| 120 | + $node = $this->inner->chmod($path, $visibility); |
| 121 | + |
| 122 | + if ($node instanceof Directory) { |
| 123 | + return $node; |
| 124 | + } |
| 125 | + |
| 126 | + return $this->cache($node); |
| 127 | + } |
| 128 | + |
| 129 | + public function write(string $path, mixed $value, array $config = []): File |
| 130 | + { |
| 131 | + return $this->cache($this->inner->write($path, $value, $config)); |
| 132 | + } |
| 133 | + |
| 134 | + protected function inner(): Filesystem |
| 135 | + { |
| 136 | + return $this->inner; |
| 137 | + } |
| 138 | + |
| 139 | + private function cache(File $file, ?CacheItemInterface $item = null): File |
| 140 | + { |
| 141 | + $item ??= $this->cache->getItem($this->cacheKey($file->path())); |
| 142 | + |
| 143 | + if ($this->ttl) { |
| 144 | + $item->expiresAfter($this->ttl); |
| 145 | + } |
| 146 | + |
| 147 | + if ($this->cache instanceof TagAwareCacheInterface && $item instanceof ItemInterface) { |
| 148 | + $item->tag(['filesystem', "filesystem.{$this->name()}"]); |
| 149 | + } |
| 150 | + |
| 151 | + $this->cache->save($item->set($this->serialize($file))); |
| 152 | + |
| 153 | + return $file; |
| 154 | + } |
| 155 | + |
| 156 | + /** |
| 157 | + * @return array{Serialized,bool} |
| 158 | + */ |
| 159 | + private function serialize(File $file): array |
| 160 | + { |
| 161 | + return [$this->mapping->serialize($file), $file->isImage()]; |
| 162 | + } |
| 163 | + |
| 164 | + private function unserialize(mixed $value): ?File |
| 165 | + { |
| 166 | + if (!\is_array($value) || 2 !== \count($parts = $value)) { |
| 167 | + return null; |
| 168 | + } |
| 169 | + |
| 170 | + [$data, $isImage] = $parts; |
| 171 | + |
| 172 | + $file = $isImage ? new LazyImage($data) : new LazyFile($data); |
| 173 | + $file->setFilesystem($this->inner); |
| 174 | + |
| 175 | + return $file; |
| 176 | + } |
| 177 | + |
| 178 | + private function cacheKey(string $path): string |
| 179 | + { |
| 180 | + return \sprintf('filesystem.%s.%s', $this->name(), \str_replace('/', '--', $path)); |
| 181 | + } |
| 182 | +} |
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