File Cache

Fetch and cache files from local filesystem, cloud storage or public webservers in Laravel or Lumen.

The file cache is specifically designed for use in concurrent processing with multiple parallel queue workers.

Installation

composer require biigle/laravel-file-cache

Laravel

The service provider and FileCache facade are auto-discovered by Laravel.

Lumen

Add this to bootstrap/app.php:

$app->register(Biigle\FileCache\FileCacheServiceProvider::class);
$app->register(Illuminate\Filesystem\FilesystemServiceProvider::class);

To use the FileCache facade, enable $app->withFacades() and add the following to bootstrap/app.php:

if (!class_exists(FileCache::class)) {
    class_alias(Biigle\FileCache\Facades\FileCache::class, 'FileCache');
}

Without facades, the file cache instance is available as app('file-cache').

Usage

Take a look at the FileCache contract to see the public API of the file cache. Example:

use FileCache;
use Biigle\FileCache\GenericFile;

// Implements Biigle\FileCache\Contracts\File.
$file = new GenericFile('https://example.com/images/image.jpg');

FileCache::get($file, function ($file, $path) {
    // do stuff
});

If the file URL specifies another protocol than http or https (e.g. mydisk://images/image.jpg), the file cache looks for the file in the appropriate storage disk configured at filesystems.disks. You can not use a local file path as URL (e.g. /vol/images/image.jpg). Instead, configure a storage disk with the local driver.

Configuration

The file cache comes with a sensible default configuration. You can override it in the file-cache namespace or with environment variables.

file-cache.max_file_size

Default: -1 (any size) Environment: FILE_CACHE_MAX_FILE_SIZE

Maximum allowed size of a cached file in bytes. Set to -1 to allow any size.

file-cache.max_age

Default: 60 Environment: FILE_CACHE_MAX_AGE

Maximum age in minutes of a file in the cache. Older files are pruned.

file-cache.max_size

Default: 1E+9 (1 GB) Environment: FILE_CACHE_MAX_SIZE

Maximum size (soft limit) of the file cache in bytes. If the cache exceeds this size, old files are pruned.

file-cache.path

Default: 'storage/framework/cache/files'

Directory to use for the file cache.

file-cache.timeout

Default: 5.0 Environment: FILE_CACHE_TIMEOUT

Read timeout in seconds for fetching remote files. If the stream transmits no data for longer than this period (or cannot be established), caching the file fails.

file-cache.prune_interval

Default '*/5 * * * *' (every five minutes)

Interval for the scheduled task to prune the file cache.

file-cache.mime_types

Default: [] (allow all types)

Array of allowed MIME types for cached files. Caching of files with other types will fail.

Clearing

The file cache is cleared when you call php artisan cache:clear.

Testing

The FileCache facade provides a fake for easy testing. The fake does not actually fetch and store any files, but only executes the callback function with a faked file path.

use FileCache;
use Biigle\FileCache\GenericFile;

FileCache::fake();
$file = new GenericFile('https://example.com/image.jpg');
$path = FileCache::get($file, function ($file, $path) {
    return $path;
});

$this->assertFalse($this->app['files']->exists($path));