bitPickups/friendica_2019-12_sharedHosting_hotFix
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Implement Hook::callAll('storage_instance') call for addons and add a description for it.

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- Remove implicit Dice usage
- Add concrete instance creating
- Adding Hook call for addon instance creating
- Updating doc for Hook
- Updating tests
This commit is contained in:
Philipp Holzer 2020-01-08 22:51:37 +01:00
parent 5d8e6c33ef
commit bfae6766bf
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8 changed files with 155 additions and 62 deletions
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20
doc/AddonStorageBackend.md
View file

@ -23,6 +23,7 @@ interface IStorage
public function getOptions();
public function saveOptions(array $data);
public function __toString();
public static function getName();
}
```
@ -85,11 +86,16 @@ See doxygen documentation of `IStorage` interface for details about each method.
Each backend must be registered in the system when the plugin is installed, to be aviable.
`DI::facStorage()->register(string $name, string $class)` is used to register the backend class.
The `$name` must be univocal and will be shown to admin.
`DI::facStorage()->register(string $class)` is used to register the backend class.
When the plugin is uninstalled, registered backends must be unregistered using
`DI::facStorage()->unregister(string $name)`.
`DI::facStorage()->unregister(string $class)`.
You have to register a new hook in your addon, listening on `storage_instance(App $a, array $data)`.
In case `$data['name']` is your storage class name, you have to instance a new instance of your `Friendica\Model\Storage\IStorage` class.
Set the instance of your class as `$data['storage']` to pass it back to the backend.
This is necessary because it isn't always clear, if you need further construction arguments.
## Adding tests
@ -252,6 +258,14 @@ function samplestorage_unistall()
// when the plugin is uninstalled, we unregister the backend.
DI::facStorage()->unregister(SampleStorageBackend::class);
}
function samplestorage_storage_instance(\Friendica\App $a, array $data)
{
if ($data['name'] === SampleStorageBackend::getName()) {
// instance a new sample storage instance and pass it back to the core for usage
$data['storage'] = new SampleStorageBackend(DI::config(), DI::l10n(), DI::cache());
}
}
```
**Theoretically - until tests for Addons are enabled too - create a test class with the name `addon/tests/SampleStorageTest.php`:

8
doc/Addons.md
View file

@ -706,6 +706,14 @@ Here is a complete list of all hook callbacks with file locations (as of 24-Sep-
Hook::callAll('page_header', DI::page()['nav']);
Hook::callAll('nav_info', $nav);
### src/Core/Authentication.php
Hook::callAll('logged_in', $a->user);
### src/Core/StorageManager
Hook::callAll('storage_instance', $data);
### src/Worker/Directory.php
Hook::callAll('globaldir_update', $arr);

4
doc/de/Addons.md
View file

@ -424,6 +424,10 @@ Eine komplette Liste aller Hook-Callbacks mit den zugehörigen Dateien (am 01-Ap
### src/Core/Authentication.php
Hook::callAll('logged_in', $a->user);
### src/Core/StorageManager
Hook::callAll('storage_instance', $data);
### src/Worker/Directory.php

93
src/Core/StorageManager.php
View file

@ -2,9 +2,9 @@
namespace Friendica\Core;
use Dice\Dice;
use Exception;
use Friendica\Core\Config\IConfiguration;
use Friendica\Core\L10n\L10n;
use Friendica\Database\Database;
use Friendica\Model\Storage;
use Psr\Log\LoggerInterface;
@ -29,14 +29,19 @@ class StorageManager
private $backends = [];
/**
* @var Storage\IStorage[] A local cache for storage instances
*/
private $backendInstances = [];
/** @var Database */
private $dba;
/** @var IConfiguration */
private $config;
/** @var LoggerInterface */
private $logger;
/** @var Dice */
private $dice;
/** @var L10n */
private $l10n;
/** @var Storage\IStorage */
private $currentBackend;
@ -45,23 +50,19 @@ class StorageManager
* @param Database $dba
* @param IConfiguration $config
* @param LoggerInterface $logger
* @param Dice $dice
* @param L10n $l10n
*/
public function __construct(Database $dba, IConfiguration $config, LoggerInterface $logger, Dice $dice)
public function __construct(Database $dba, IConfiguration $config, LoggerInterface $logger, L10n $l10n)
{
$this->dba = $dba;
$this->config = $config;
$this->logger = $logger;
$this->dice = $dice;
$this->l10n = $l10n;
$this->backends = $config->get('storage', 'backends', self::DEFAULT_BACKENDS);
$currentName = $this->config->get('storage', 'name', '');
if ($this->isValidBackend($currentName)) {
$this->currentBackend = $this->dice->create($this->backends[$currentName]);
} else {
$this->currentBackend = null;
}
$this->currentBackend = $this->getByName($currentName);
}
/**
@ -77,41 +78,65 @@ class StorageManager
/**
* @brief Return storage backend class by registered name
*
* @param string|null $name Backend name
* @param string|null $name Backend name
* @param boolean $userBackend Just return instances in case it's a user backend (e.g. not SystemResource)
*
* @return Storage\IStorage|null null if no backend registered at $name
*
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public function getByName(string $name = null)
public function getByName(string $name = null, $userBackend = true)
{
if (!$this->isValidBackend($name) &&
$name !== Storage\SystemResource::getName()) {
return null;
// If there's no cached instance create a new instance
if (!isset($this->backendInstances[$name])) {
// If the current name isn't a valid backend (or the SystemResource instance) create it
if ($this->isValidBackend($name, $userBackend)) {
switch ($name) {
// Try the filesystem backend
case Storage\Filesystem::getName():
$this->backendInstances[$name] = new Storage\Filesystem($this->config, $this->logger, $this->l10n);
break;
// try the database backend
case Storage\Database::getName():
$this->backendInstances[$name] = new Storage\Database($this->dba, $this->logger, $this->l10n);
break;
// at least, try if there's an addon for the backend
case Storage\SystemResource::getName():
$this->backendInstances[$name] = new Storage\SystemResource();
break;
default:
$data = [
'name' => $name,
'storage' => null,
];
Hook::callAll('storage_instance', $data);
if (($data['storage'] ?? null) instanceof Storage\IStorage) {
$this->backendInstances[$data['name'] ?? $name] = $data['storage'];
} else {
return null;
}
break;
}
} else {
return null;
}
}
/** @var Storage\IStorage $storage */
$storage = null;
// If the storage of the file is a system resource,
// create it directly since it isn't listed in the registered backends
if ($name === Storage\SystemResource::getName()) {
$storage = $this->dice->create(Storage\SystemResource::class);
} else {
$storage = $this->dice->create($this->backends[$name]);
}
return $storage;
return $this->backendInstances[$name];
}
/**
* Checks, if the storage is a valid backend
*
* @param string|null $name The name or class of the backend
* @param string|null $name The name or class of the backend
* @param boolean $userBackend True, if just user backend should get returned (e.g. not SystemResource)
*
* @return boolean True, if the backend is a valid backend
*/
public function isValidBackend(string $name = null)
public function isValidBackend(string $name = null, bool $userBackend = true)
{
return array_key_exists($name, $this->backends);
return array_key_exists($name, $this->backends) ||
(!$userBackend && $name === Storage\SystemResource::getName());
}
/**
@ -128,7 +153,7 @@ class StorageManager
}
if ($this->config->set('storage', 'name', $name)) {
$this->currentBackend = $this->dice->create($this->backends[$name]);
$this->currentBackend = $this->getByName($name);
return true;
} else {
return false;
@ -146,7 +171,9 @@ class StorageManager
}
/**
* @brief Register a storage backend class
* Register a storage backend class
*
* You have to register the hook "storage_instance" as well to make this class work!
*
* @param string $class Backend class name
*

8
static/dependencies.config.php
View file

@ -196,15 +196,7 @@ return [
$_SERVER, $_COOKIE
],
],
StorageManager::class => [
'constructParams' => [
[Dice::INSTANCE => Dice::SELF],
]
],
IStorage::class => [
// Don't share this class with other creations, because it's possible to switch the backend
// and so we wouldn't be possible to update it
'shared' => false,
'instanceOf' => StorageManager::class,
'call' => [
['getBackend', [], Dice::CHAIN_CALL],

12
tests/Util/SampleStorageBackend.php
View file

@ -2,9 +2,12 @@
namespace Friendica\Test\Util;
use Friendica\App;
use Friendica\Core\Hook;
use Friendica\Model\Storage\IStorage;
use Friendica\Core\L10n\L10n;
use Mockery\MockInterface;
/**
* A backend storage example class
@ -91,4 +94,13 @@ class SampleStorageBackend implements IStorage
{
return self::NAME;
}
/**
* This one is a hack to register this class to the hook
*/
public static function registerHook()
{
Hook::register('storage_instance', __DIR__ . '/SampleStorageBackendInstance.php', 'create_instance');
}
}

18
tests/Util/SampleStorageBackendInstance.php Normal file
View file

@ -0,0 +1,18 @@
<?php
// contains a test-hook call for creating a storage instance
use Friendica\App;
use Friendica\Core\L10n\L10n;
use Friendica\Test\Util\SampleStorageBackend;
use Mockery\MockInterface;
function create_instance(App $a, &$data)
{
/** @var L10n|MockInterface $l10n */
$l10n = \Mockery::mock(L10n::class);
if ($data['name'] == SampleStorageBackend::getName()) {
$data['storage'] = new SampleStorageBackend($l10n);
}
}

54
tests/src/Core/StorageManagerTest.php
View file

@ -5,9 +5,12 @@ namespace Friendica\Test\src\Core;
use Dice\Dice;
use Friendica\Core\Config\IConfiguration;
use Friendica\Core\Config\PreloadConfiguration;
use Friendica\Core\Hook;
use Friendica\Core\L10n\L10n;
use Friendica\Core\Session\ISession;
use Friendica\Core\StorageManager;
use Friendica\Database\Database;
use Friendica\DI;
use Friendica\Factory\ConfigFactory;
use Friendica\Model\Config\Config;
use Friendica\Model\Storage;
@ -21,6 +24,12 @@ use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
use Friendica\Test\Util\SampleStorageBackend;
/**
* @todo Rework Hook:: methods to dynamic to remove the separated process annotation
*
* @runTestsInSeparateProcesses
* @preserveGlobalState disabled
*/
class StorageManagerTest extends DatabaseTest
{
/** @var Database */
@ -29,8 +38,8 @@ class StorageManagerTest extends DatabaseTest
private $config;
/** @var LoggerInterface */
private $logger;
/** @var Dice */
private $dice;
/** @var L10n */
private $l10n;
use VFSTrait;
@ -41,10 +50,6 @@ class StorageManagerTest extends DatabaseTest
$this->setUpVfsDir();
$this->logger = new NullLogger();
$this->dice = (new Dice())
->addRules(include __DIR__ . '/../../../static/dependencies.config.php')
->addRule(Database::class, ['instanceOf' => StaticDatabase::class, 'shared' => true])
->addRule(ISession::class, ['instanceOf' => Session\Memory::class, 'shared' => true, 'call' => null]);
$profiler = \Mockery::mock(Profiler::class);
$profiler->shouldReceive('saveTimestamp')->withAnyArgs()->andReturn(true);
@ -58,6 +63,8 @@ class StorageManagerTest extends DatabaseTest
$configModel = new Config($this->dba);
$this->config = new PreloadConfiguration($configCache, $configModel);
$this->l10n = \Mockery::mock(L10n::class);
}
/**
@ -65,7 +72,7 @@ class StorageManagerTest extends DatabaseTest
*/
public function testInstance()
{
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
$this->assertInstanceOf(StorageManager::class, $storageManager);
}
@ -113,11 +120,11 @@ class StorageManagerTest extends DatabaseTest
*
* @dataProvider dataStorages
*/
public function testGetByName($name, $assert, $assertName)
public function testGetByName($name, $assert, $assertName, $userBackend)
{
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
$storage = $storageManager->getByName($name);
$storage = $storageManager->getByName($name, $userBackend);
if (!empty($assert)) {
$this->assertInstanceOf(Storage\IStorage::class, $storage);
@ -136,7 +143,7 @@ class StorageManagerTest extends DatabaseTest
*/
public function testIsValidBackend($name, $assert, $assertName, $userBackend)
{
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
$this->assertEquals($userBackend, $storageManager->isValidBackend($name));
}
@ -146,7 +153,7 @@ class StorageManagerTest extends DatabaseTest
*/
public function testListBackends()
{
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
$this->assertEquals(StorageManager::DEFAULT_BACKENDS, $storageManager->listBackends());
}
@ -158,7 +165,7 @@ class StorageManagerTest extends DatabaseTest
*/
public function testGetBackend($name, $assert, $assertName, $userBackend)
{
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
$this->assertNull($storageManager->getBackend());
@ -178,7 +185,7 @@ class StorageManagerTest extends DatabaseTest
{
$this->config->set('storage', 'name', $name);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
if ($userBackend) {
$this->assertInstanceOf($assert, $storageManager->getBackend());
@ -196,17 +203,28 @@ class StorageManagerTest extends DatabaseTest
*/
public function testRegisterUnregisterBackends()
{
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
/// @todo Remove dice once "Hook" is dynamic and mockable
$dice = (new Dice())
->addRules(include __DIR__ . '/../../../static/dependencies.config.php')
->addRule(Database::class, ['instanceOf' => StaticDatabase::class, 'shared' => true])
->addRule(ISession::class, ['instanceOf' => Session\Memory::class, 'shared' => true, 'call' => null]);
DI::init($dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
$this->assertTrue($storageManager->register(SampleStorageBackend::class));
$this->assertEquals(array_merge(StorageManager::DEFAULT_BACKENDS, [
'Sample Storage' => SampleStorageBackend::class,
SampleStorageBackend::getName() => SampleStorageBackend::class,
]), $storageManager->listBackends());
$this->assertEquals(array_merge(StorageManager::DEFAULT_BACKENDS, [
'Sample Storage' => SampleStorageBackend::class,
SampleStorageBackend::getName() => SampleStorageBackend::class,
]), $this->config->get('storage', 'backends'));
// inline call to register own class as hook (testing purpose only)
SampleStorageBackend::registerHook();
Hook::loadHooks();
$this->assertTrue($storageManager->setBackend(SampleStorageBackend::NAME));
$this->assertEquals(SampleStorageBackend::NAME, $this->config->get('storage', 'name'));
@ -233,7 +251,7 @@ class StorageManagerTest extends DatabaseTest
$this->loadFixture(__DIR__ . '/../../datasets/storage/database.fixture.php', $this->dba);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->dice);
$storageManager = new StorageManager($this->dba, $this->config, $this->logger, $this->l10n);
$storage = $storageManager->getByName($name);
$storageManager->move($storage);