README

Provides an Aws\CacheInterface\CacheInterface compliant cache for the AWS SDK which uses the laravel Cache classes.

Purpose

When using EC2 Instance IAM Roles or ECS Task IAM Roles the AWS php sdk automatically performs lookups against the ec2 metadata api (169.254.169.254) to get credentials. These by default are not cached, and can occasionally be a source of trouble or slowdowns if the metadata api is slow/not responding.

This package allows you to configure certain laravel filesystems to be automatically loaded with a CacheInterface that will use a laravel cache store to cache the STS tokens returned, reducing requests to the metadata api.

Usage

Direct Usage of the Adapter

The LaravelCacheAdapter can be passed directly into Flysystem in your config/filesystems.php

    's3' => [
        'driver'      => 's3',
        'base-path'   => 'https://s3.amazonaws.com',
        'credentials' => new LaravelCacheAdapter(app('cache'))
        'bucket'      => env('AWS_BUCKET'),
        'region'      => env('AWS_REGION', 'us-east-1'),
    ],

Auto Insertion of the CredentialProvider via ServiceProvider

The default configuration settings are in /config/laravel-aws-cache.php. Copy this file to your own config directory to modify the values. You can publish this config using this command:

$ php artisan vendor:publish --provider="LukeWaite\LaravelAwsCacheAdapter\ServiceProvider"

Configuration

return [
    /**
     * A comma separated list of filesystems defined in `config/filesystems.php` to which the
     * credential cache should be applied.
     */
    'filesystems' => env('LARAVEL_AWS_CACHE_FILESYSTEMS', null),

    /**
     * Whether or not to iterate through the `filesystems` defined and apply the credential cache.
     */
    'enable' => env('LARAVEL_AWS_CACHE_ENABLE', false),

    /**
     * The Laravel cache store defined in `config/cache.php` to use.
     */
    'cache' => env('LARAVEL_AWS_CACHE_CACHE', 'file')
];