Gaufrette is a PHP5 library that provides a filesystem abstraction layer.
This project is under intensive development but we do not want to break BC.
Imagine you have to manage a lot of medias in a PHP project. Lets see how to take this situation in your advantage using Gaufrette.
The filesystem abstraction layer permits you to develop your application without the need to know were all those medias will be stored and how.
Another advantage of this is the possibility to update the files location without any impact on the code apart from the definition of your filesystem. In example, if your project grows up very fast and if your server reaches its limits, you can easily move your medias in an Amazon S3 server or any other solution.
php composer.phar require knplabs/gaufrette:0.2.*@dev
php composer.phar require knplabs/gaufrette:0.1.*
Following an example with the local filesystem adapter. To setup other adapters, look up the testcases.
<?php use Gaufrette\Filesystem; use Gaufrette\Adapter\Local as LocalAdapter; $adapter = new LocalAdapter('/var/media'); $filesystem = new Filesystem($adapter);
<?php // ... setup your filesystem $content = $filesystem->read('myFile'); $content = 'Hello I am the new content'; $filesystem->write('myFile', $content);
Gaufrette also provide a File class that is a representation of files in a filesystem
<?php $file = new File('newFile', $filesystem); $file->setContent('Hello World'); echo $file->getContent(); // Hello World
If you have to deal with a slow filesystem, it is out of question to use it directly. So, you need a cache! Happily, Gaufrette offers a cache system ready for use. It consist of an adapter itself composed of two adapters:
* The *source* adapter that should be cached * The *cache* adapter that is used to cache
Here is an example of how to cache an ftp filesystem:
<?php use Gaufrette\Filesystem; use Gaufrette\Adapter\Ftp as FtpAdapter; use Gaufrette\Adapter\Local as LocalAdapter; use Gaufrette\Adapter\Cache as CacheAdapter; // Locale Cache-Directory (e.g. '%kernel.root_dir%/cache/%kernel.environment%/filesystem') with create = true $local = new LocalAdapter($cacheDirectory, true); // FTP Adapter with a defined root-path $ftp = new FtpAdapter($path, $host, $username, $password, $port); // Cached Adapter with 3600 seconds time to live $cachedFtp = new CacheAdapter($ftp, $local, 3600); $filesystem = new Filesystem($cachedFtp);
The third parameter of the cache adapter is the time to live of the cache.
When using the legacy Amazon S3 adapters, you will need to specify a CA
certificate to be able to talk to Amazon servers in https. You can use
the one which is shipped with the SDK by defining before creating the
Specifying a custom CA certificate is not required when using the
Gaufrette\Adapter\AmazonS3 adapter because it uses the newest version of the
AWS SDK for PHP.
If you use the newer adapter
\AwsS3 you will need to use the S3Client factory method, and the plug that into the Adapter.
$service = S3Client::factory(array('key' => 'your_key_here', 'secret' => 'your_secret' )); $client = new AwsS3($service,'your-bucket-name');
To use the OpenCloud adapter you will need to create a connection using the OpenCloud SDK. You can then fetch the ObjectStore which is required for the OpenCloud adapter.
$connection = new OpenCloud\OpenStack( 'https://example.com/v2/identity', array( 'username' => 'your username', 'password' => 'your Keystone password', 'tenantName' => 'your tenant (project) name' )); $objectStore = $connection->objectStoreService('cloudFiles', 'LON', 'publicURL'); $adapter = new Gaufrette\Adapter\OpenCloud( $objectStore, 'container-name' ); $filesystem = new Filesystem($adapter);
Rackspace uses a difference connection class
$connection = new OpenCloud\Rackspace( 'https://identity.api.rackspacecloud.com/v2.0/', array( 'username' => 'rackspace-user', 'apiKey' => '0900af093093788912388fc09dde090ffee09' ));
Instantiating the OpenCloud object store service has some overhead because it issues an authentication request, even if you end up not using the filesystem. For better performance you can use a lazy-loading adapter which only authenticates when needed.
// ... $connection from previous step, either OpenCloud\OpenStack or OpenCloud\Rackspace instance $factory = new Gaufrette\Adapter\OpenStackCloudFiles\ObjectStoreFactory($connection); $adapter = new Gaufrette\Adapter\LazyOpenCloud($factory, 'container-name'); $filesystem = new Filesystem($adapter);
Azure Blob Storage is the storage service provided by Microsoft Windows Azure cloud environment. To use this adapter you need to install the Azure SDK for php into your project.
To instantiate the
AzureBlobStorage adapter you need a
BlobProxyFactoryInterface instance (you can use the default
BlobProxyFactory class) and a connection string. The connection string should follow this prototype:
You should be able to find your endpoint, account name and account key in your Windows Azure management console.
Thanks to the blob proxy factory, the adapter lazy loads the connection to the endpoint, so it will not create any connection until it's really needed (eg. when a read or write operation is issued).
Follows a simple example on how to build the adapter:
$connectionString = '...'; $factory = new Gaufrette\Adapter\AzureBlobStorage\BlobProxyFactory($connectionString); $adapter = new Gaufrette\Adapter\AzureBlobStorage($factory, 'my-container'); $filesystem = new Gaufrette\Filesystem($adapter);
Some FTP servers need valid configuration so Gaufrette can work with them as expected.
To handle hidden files we need to configure it by:
echo "yes" > /etc/pure-ftpd/conf/DisplayDotFiles
To handle hidden files we need to change
ListOptions in proftpd configuration (at debian system
/etc/proftpd/proftpd.conf probably) to:
As you can see, Gaufrette provides an elegant way to declare your filesystems.
In your Symfony2 project, add to
[gaufrette] git=https://github.com/KnpLabs/Gaufrette.git # if you want to use Amazon S3 [aws-sdk] git=https://github.com/aws/aws-sdk-php
And then, you can simply add them as services of your dependency injection container. As an example, here is services declaration to use Amazon S3:
<service id="acme.s3" class="Aws\\S3\\S3Client" factory-class="Aws\\S3\\S3Client" factory-method="factory"> <argument type="collection"> <argument key="key">%acme.aws_key%</argument> <argument key="secret">%acme.aws_secret_key%</argument> </argument> </service> <service id="acme.s3.adapter" class="Gaufrette\Adapter\AmazonS3"> <argument type="service" id="acme.s3"></argument> <argument>%acme.s3.bucket_name%</argument> </service> <service id="acme.fs" class="Gaufrette\Filesystem"> <argument type="service" id="acme.s3.adapter"></argument> </service>
Sometimes, you don't have the choice, you must get a streamable file URL (i.e to transform an image). Let's take a look at the following example:
$adapter = new InMemoryAdapter(array('hello.txt' => 'Hello World!')); $filesystem = new Filesystem($adapter); $map = StreamWrapper::getFilesystemMap(); $map->set('foo', $filesystem); StreamWrapper::register(); echo file_get_contents('gaufrette://foo/hello.txt'); // Says "Hello World!"
The tests use phpspec2 and PHPUnit.
As some filesystem adapters use vendor libraries, you should install the vendors:
$ cd gaufrette $ php composer.phar install --dev $ sh bin/configure_test_env.sh
It will avoid skip a lot of tests.
In the Gaufrette root directory:
To check if classes specification pass: $ php bin/phpspec run
To check basic functionality of the adapters (adapters should be configured you will see many skipped tests): $ phpunit
Is it green?