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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace LambdaTwelve\OneRecord\Server; |
| 6 | |
| 7 | use LambdaTwelve\OneRecord\Model\EmbeddedIdMinter; |
| 8 | use LambdaTwelve\OneRecord\Model\Uuid5EmbeddedIdMinter; |
| 9 | use LambdaTwelve\OneRecord\Server\Http\RequestBody; |
| 10 | use LambdaTwelve\OneRecord\Server\Http\Responder; |
| 11 | use LambdaTwelve\OneRecord\Server\Spi\AccessDelegationStore; |
| 12 | use LambdaTwelve\OneRecord\Server\Spi\AccessPolicy; |
| 13 | use LambdaTwelve\OneRecord\Server\Spi\ActionRequestStore; |
| 14 | use LambdaTwelve\OneRecord\Server\Spi\Authenticator; |
| 15 | use LambdaTwelve\OneRecord\Server\Spi\IdGenerator; |
| 16 | use LambdaTwelve\OneRecord\Server\Spi\LogisticsEventStore; |
| 17 | use LambdaTwelve\OneRecord\Server\Spi\LogisticsObjectStore; |
| 18 | use LambdaTwelve\OneRecord\Server\Spi\NotificationOutbox; |
| 19 | use LambdaTwelve\OneRecord\Server\Spi\SubscriptionStore; |
| 20 | use LambdaTwelve\OneRecord\Server\Spi\UnitOfWork; |
| 21 | use LambdaTwelve\OneRecord\Server\Spi\Volatile; |
| 22 | use LambdaTwelve\OneRecord\Vocabulary\Vocabulary; |
| 23 | use Psr\Clock\ClockInterface; |
| 24 | use Psr\EventDispatcher\EventDispatcherInterface; |
| 25 | use Psr\Http\Message\ResponseFactoryInterface; |
| 26 | use Psr\Http\Message\StreamFactoryInterface; |
| 27 | use Psr\Log\LoggerInterface; |
| 28 | use Psr\Log\NullLogger; |
| 29 | |
| 30 | /** |
| 31 | * Everything the endpoints share: the host's SPI implementations and PSR |
| 32 | * services, plus the helpers built from them. One object, so an endpoint's |
| 33 | * constructor stays a single parameter and a host wires things in one place. |
| 34 | */ |
| 35 | final readonly class Services |
| 36 | { |
| 37 | public Responder $responder; |
| 38 | public RequestBody $body; |
| 39 | public Vocabulary $vocabulary; |
| 40 | public EmbeddedIdMinter $embeddedIds; |
| 41 | public LoggerInterface $logger; |
| 42 | public IdGenerator $ids; |
| 43 | public UnitOfWork $unitOfWork; |
| 44 | |
| 45 | public function __construct( |
| 46 | public ServerConfig $config, |
| 47 | public LogisticsObjectStore $objects, |
| 48 | public LogisticsEventStore $events, |
| 49 | public ActionRequestStore $actionRequests, |
| 50 | public SubscriptionStore $subscriptions, |
| 51 | public AccessDelegationStore $delegations, |
| 52 | public NotificationOutbox $outbox, |
| 53 | public Authenticator $authenticator, |
| 54 | public AccessPolicy $policy, |
| 55 | public ClockInterface $clock, |
| 56 | public EventDispatcherInterface $dispatcher, |
| 57 | ResponseFactoryInterface $responses, |
| 58 | StreamFactoryInterface $streams, |
| 59 | ?LoggerInterface $logger = null, |
| 60 | ?Vocabulary $vocabulary = null, |
| 61 | ?EmbeddedIdMinter $embeddedIds = null, |
| 62 | ?IdGenerator $ids = null, |
| 63 | ?UnitOfWork $unitOfWork = null, |
| 64 | ) { |
| 65 | $this->responder = new Responder($responses, $streams); |
| 66 | $this->body = new RequestBody($config->maxBodyBytes); |
| 67 | // The newest configured data model is the validation ceiling, as ServerConfig says (D7-001). |
| 68 | $this->vocabulary = $vocabulary ?? Vocabulary::for($config->validationModel()); |
| 69 | $this->embeddedIds = $embeddedIds ?? new Uuid5EmbeddedIdMinter(); |
| 70 | $this->logger = $logger ?? new NullLogger(); |
| 71 | $this->ids = $ids ?? new UuidIdGenerator(); |
| 72 | $this->unitOfWork = $unitOfWork ?? new IdentityUnitOfWork(); |
| 73 | foreach ($this->checks() as $finding) { |
| 74 | $this->logger->warning($finding); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * What an operator should know about this wiring, in plain sentences; empty |
| 80 | * when nothing is amiss. Logged at construction and offered to the host's |
| 81 | * status page through ServerBuilder::check(). |
| 82 | * |
| 83 | * @return list<string> |
| 84 | */ |
| 85 | public function checks(): array |
| 86 | { |
| 87 | $findings = []; |
| 88 | if ($this->unitOfWork instanceof IdentityUnitOfWork) { |
| 89 | // Without a transaction a failed operation leaves what it had already written. Only |
| 90 | // stores marked Volatile have nothing to roll back; a host that persists must bind its own. |
| 91 | $persistent = []; |
| 92 | foreach (['objects' => $this->objects, 'events' => $this->events, 'actionRequests' => $this->actionRequests, 'subscriptions' => $this->subscriptions, 'delegations' => $this->delegations, 'outbox' => $this->outbox] as $name => $store) { |
| 93 | if (!$store instanceof Volatile) { |
| 94 | $persistent[] = $name . ' (' . $store::class . ')'; |
| 95 | } |
| 96 | } |
| 97 | if ($persistent !== []) { |
| 98 | $findings[] = \sprintf('No UnitOfWork is bound and these stores are not marked Volatile: %s. Operations will not be atomic; bind your database transaction as the UnitOfWork (a decorator around an in-memory store should implement Spi\\Volatile).', implode(', ', $persistent)); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | return $findings; |
| 103 | } |
| 104 | } |