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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace LambdaTwelve\OneRecord\Client; |
| 6 | |
| 7 | use DateTimeImmutable; |
| 8 | use DateTimeZone; |
| 9 | use InvalidArgumentException; |
| 10 | use LambdaTwelve\OneRecord\Api\AccessDelegation; |
| 11 | use LambdaTwelve\OneRecord\Api\ActionRequest; |
| 12 | use LambdaTwelve\OneRecord\Api\ErrorDocument; |
| 13 | use LambdaTwelve\OneRecord\Api\InvalidDocument; |
| 14 | use LambdaTwelve\OneRecord\Api\Notification; |
| 15 | use LambdaTwelve\OneRecord\Api\RequestStatus; |
| 16 | use LambdaTwelve\OneRecord\Api\ServerInformation; |
| 17 | use LambdaTwelve\OneRecord\Api\Subscription; |
| 18 | use LambdaTwelve\OneRecord\Api\TopicType; |
| 19 | use LambdaTwelve\OneRecord\Api\Verification; |
| 20 | use LambdaTwelve\OneRecord\Change\Change; |
| 21 | use LambdaTwelve\OneRecord\JsonLd\ExpandedDocument; |
| 22 | use LambdaTwelve\OneRecord\JsonLd\Json; |
| 23 | use LambdaTwelve\OneRecord\JsonLd\JsonLd; |
| 24 | use LambdaTwelve\OneRecord\JsonLd\JsonLdException; |
| 25 | use LambdaTwelve\OneRecord\JsonLd\Nodes; |
| 26 | use LambdaTwelve\OneRecord\Model\LogisticsEvent; |
| 27 | use LambdaTwelve\OneRecord\Model\LogisticsObject; |
| 28 | use LambdaTwelve\OneRecord\Model\ModelException; |
| 29 | use LambdaTwelve\OneRecord\Rdf\BlankNode; |
| 30 | use LambdaTwelve\OneRecord\Rdf\Graph; |
| 31 | use LambdaTwelve\OneRecord\Rdf\Iri; |
| 32 | use LambdaTwelve\OneRecord\Rdf\Triple; |
| 33 | use LambdaTwelve\OneRecord\Spec\ApiFeatures; |
| 34 | use LambdaTwelve\OneRecord\Spec\ApiVersion; |
| 35 | use LambdaTwelve\OneRecord\Vocabulary\Generated\Api; |
| 36 | use LambdaTwelve\OneRecord\Vocabulary\Generated\Cargo; |
| 37 | use Psr\Clock\ClockInterface; |
| 38 | use Psr\Http\Client\ClientExceptionInterface; |
| 39 | use Psr\Http\Client\ClientInterface; |
| 40 | use Psr\Http\Message\RequestFactoryInterface; |
| 41 | use Psr\Http\Message\ResponseInterface; |
| 42 | use Psr\Http\Message\StreamFactoryInterface; |
| 43 | use Psr\Log\LoggerInterface; |
| 44 | use Psr\Log\NullLogger; |
| 45 | use Psr\SimpleCache\CacheInterface; |
| 46 | use Throwable; |
| 47 | |
| 48 | /** |
| 49 | * A client for one partner's ONE Record server over PSR-18. It discovers the |
| 50 | * partner's server information, picks the highest API version both sides |
| 51 | * support and speaks that version from then on. Responses are parsed into the |
| 52 | * same model and API documents the server side uses; HTTP errors become |
| 53 | * OneRecordHttpException with the api:Error the partner sent. |
| 54 | * |
| 55 | * Parsing is lenient on purpose: unknown predicates are kept in the graph |
| 56 | * and 2.3-only properties are optional, so a 2.2 partner is read fine. |
| 57 | */ |
| 58 | final class OneRecordClient |
| 59 | { |
| 60 | private const string JSON_LD = 'application/ld+json'; |
| 61 | |
| 62 | private readonly string $endpoint; |
| 63 | |
| 64 | /** @var list<string> normalised origins (scheme://host:port) a request may be sent to with this partner's token */ |
| 65 | private readonly array $origins; |
| 66 | |
| 67 | /** @var list<ApiVersion> */ |
| 68 | private readonly array $ourVersions; |
| 69 | |
| 70 | private ?ApiVersion $version = null; |
| 71 | |
| 72 | private ?ServerInformation $serverInformation = null; |
| 73 | |
| 74 | private readonly LoggerInterface $logger; |
| 75 | |
| 76 | /** |
| 77 | * @param string $serverEndpoint the partner's ONE Record server endpoint (what its server information calls api:hasServerEndpoint) |
| 78 | * @param ?list<ApiVersion> $apiVersions the versions this client is willing to speak; all supported ones by default |
| 79 | * @param int $serverInformationTtl seconds to keep a partner's server information in the cache |
| 80 | * @param list<string> $additionalOrigins other origins (scheme://host[:port]) this partner legitimately serves |
| 81 | * resources from; the token is sent there too. Empty for almost everyone. |
| 82 | */ |
| 83 | public function __construct( |
| 84 | private readonly ClientInterface $http, |
| 85 | private readonly RequestFactoryInterface $requests, |
| 86 | private readonly StreamFactoryInterface $streams, |
| 87 | private readonly TokenProvider $tokens, |
| 88 | string $serverEndpoint, |
| 89 | private readonly ?CacheInterface $cache = null, |
| 90 | private readonly ?ClockInterface $clock = null, |
| 91 | ?LoggerInterface $logger = null, |
| 92 | ?array $apiVersions = null, |
| 93 | private readonly int $serverInformationTtl = 3600, |
| 94 | array $additionalOrigins = [], |
| 95 | ) { |
| 96 | if (preg_match('#^https?://#', $serverEndpoint) !== 1) { |
| 97 | throw new InvalidArgumentException(\sprintf('The server endpoint must be an absolute http(s) URL, got "%s".', $serverEndpoint)); |
| 98 | } |
| 99 | $this->endpoint = rtrim($serverEndpoint, '/'); |
| 100 | $origins = [self::originOf($this->endpoint) ?? throw new InvalidArgumentException(\sprintf('The server endpoint "%s" has no usable origin.', $serverEndpoint))]; |
| 101 | foreach ($additionalOrigins as $origin) { |
| 102 | $origins[] = self::originOf($origin) ?? throw new InvalidArgumentException(\sprintf('"%s" is not an origin (scheme://host[:port]).', $origin)); |
| 103 | } |
| 104 | $this->origins = $origins; |
| 105 | $this->ourVersions = $apiVersions ?? ApiVersion::allDescending(); |
| 106 | $this->logger = $logger ?? new NullLogger(); |
| 107 | } |
| 108 | |
| 109 | public function endpoint(): string |
| 110 | { |
| 111 | return $this->endpoint; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Speak this version regardless of what the partner advertises. |
| 116 | */ |
| 117 | public function withApiVersion(ApiVersion $version): self |
| 118 | { |
| 119 | $clone = clone $this; |
| 120 | $clone->version = $version; |
| 121 | |
| 122 | return $clone; |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * The partner's server information, cached (PSR-16 when given, else in this object). |
| 127 | */ |
| 128 | public function serverInformation(bool $refresh = false): ServerInformation |
| 129 | { |
| 130 | if (!$refresh && $this->serverInformation !== null) { |
| 131 | return $this->serverInformation; |
| 132 | } |
| 133 | $key = 'one-record.server-information.' . hash('sha256', $this->endpoint); |
| 134 | if (!$refresh && $this->cache !== null) { |
| 135 | try { |
| 136 | $cached = $this->cache->get($key); |
| 137 | if (\is_string($cached)) { |
| 138 | return $this->serverInformation = ServerInformation::fromJsonLd($cached); |
| 139 | } |
| 140 | } catch (Throwable) { |
| 141 | // A cache problem only costs a request. |
| 142 | } |
| 143 | } |
| 144 | // Server information is fetched before a version is negotiated. A strict partner answers 406 |
| 145 | // to a version it does not speak, so ask for each of ours in turn, highest first (AR-005). |
| 146 | $response = null; |
| 147 | $refused = null; |
| 148 | foreach ($this->ourVersions as $candidate) { |
| 149 | try { |
| 150 | $response = $this->send('GET', $this->endpoint . '/', null, $candidate); |
| 151 | break; |
| 152 | } catch (OneRecordHttpException $e) { |
| 153 | if ($e->status !== 406) { |
| 154 | throw $e; |
| 155 | } |
| 156 | $refused = $e; |
| 157 | } |
| 158 | } |
| 159 | if ($response === null) { |
| 160 | throw new ClientException(\sprintf('%s accepts none of the API versions this client speaks (%s).', $this->endpoint, implode(', ', array_map(static fn(ApiVersion $v): string => $v->value, $this->ourVersions))), 0, $refused); |
| 161 | } |
| 162 | $information = $this->parse(static fn(): ServerInformation => ServerInformation::fromJsonLd(self::body($response)), 'server information'); |
| 163 | if ($this->cache !== null) { |
| 164 | try { |
| 165 | $this->cache->set($key, json_encode($information->toJsonLd(), JSON_THROW_ON_ERROR), $this->serverInformationTtl); |
| 166 | } catch (Throwable) { |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | return $this->serverInformation = $information; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * The API version used with this partner: the highest both sides support. |
| 175 | * |
| 176 | * @throws ClientException when the partner supports none of ours |
| 177 | */ |
| 178 | public function apiVersion(): ApiVersion |
| 179 | { |
| 180 | if ($this->version !== null) { |
| 181 | return $this->version; |
| 182 | } |
| 183 | $information = $this->serverInformation(); |
| 184 | $common = $information->bestCommonApiVersion($this->ourVersions); |
| 185 | if ($common === null) { |
| 186 | throw new ClientException(\sprintf('%s supports API %s; this client speaks %s.', $this->endpoint, $information->apiVersions === [] ? 'no listed version' : implode(', ', $information->apiVersions), implode(', ', array_map(static fn(ApiVersion $v): string => $v->value, $this->ourVersions)))); |
| 187 | } |
| 188 | $this->logger->debug('ONE Record API version negotiated', ['endpoint' => $this->endpoint, 'version' => $common->value]); |
| 189 | |
| 190 | return $this->version = $common; |
| 191 | } |
| 192 | |
| 193 | // --- Logistics objects ------------------------------------------------- |
| 194 | |
| 195 | /** |
| 196 | * @param ?DateTimeImmutable $at the revision current at that instant (the spec's `?at=` parameter) |
| 197 | * @param bool $embedded ask the server to embed linked objects it holds |
| 198 | */ |
| 199 | public function getLogisticsObject(Iri|string $object, ?DateTimeImmutable $at = null, bool $embedded = false): LogisticsObjectResponse |
| 200 | { |
| 201 | $iri = self::iri($object); |
| 202 | $query = []; |
| 203 | if ($at !== null) { |
| 204 | $query['at'] = $at->setTimezone(new DateTimeZone('UTC'))->format('Ymd\THis\Z'); |
| 205 | } |
| 206 | if ($embedded) { |
| 207 | $query['embedded'] = 'true'; |
| 208 | } |
| 209 | $url = $iri->value . ($query === [] ? '' : '?' . http_build_query($query, '', '&', PHP_QUERY_RFC3986)); |
| 210 | $response = $this->send('GET', $url); |
| 211 | $object = $this->parse(static function () use ($response, $iri, $query): LogisticsObject { |
| 212 | // The body must be about the object asked for. A historical read may be rooted at |
| 213 | // the "<iri>?at=…" URL instead; nothing else is accepted (AR-017). Both identities are |
| 214 | // named before the root is chosen, so a flattened answer is rooted at one of them wherever |
| 215 | // the node sits (R3-004). |
| 216 | $allowed = [$iri->value]; |
| 217 | if (isset($query['at'])) { |
| 218 | // The historical identity carries the instant only; embedded=true is presentation, not identity (R2-003). |
| 219 | $allowed[] = $iri->value . '?at=' . $query['at']; |
| 220 | } |
| 221 | $document = JsonLd::expand(self::body($response), array_map(static fn(string $a): Iri => new Iri($a), $allowed)); |
| 222 | if (!$document->root instanceof Iri || !\in_array($document->root->value, $allowed, true)) { |
| 223 | throw new ClientException(\sprintf('Asked for %s, the server answered with a document about %s.', $iri->value, $document->root instanceof Iri ? $document->root->value : 'an unidentified node')); |
| 224 | } |
| 225 | |
| 226 | return LogisticsObject::fromJsonLd(self::body($response), $document->root); |
| 227 | }, 'logistics object'); |
| 228 | |
| 229 | return $this->objectResponse($response, self::withoutRevisionProperties($object)); |
| 230 | } |
| 231 | |
| 232 | public function headLogisticsObject(Iri|string $object): LogisticsObjectResponse |
| 233 | { |
| 234 | return $this->objectResponse($this->send('HEAD', self::iri($object)->value), null); |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * POST /logistics-objects on the partner's server (it must allow it); returns the URI assigned. |
| 239 | * |
| 240 | * @param LogisticsObject|array<string, mixed> $object |
| 241 | */ |
| 242 | public function createLogisticsObject(LogisticsObject|array $object): Iri |
| 243 | { |
| 244 | $json = $object instanceof LogisticsObject ? $object->toJsonLd() : $object; |
| 245 | |
| 246 | return self::location($this->send('POST', $this->endpoint . '/logistics-objects', $json)); |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * PATCH a Change; returns the URI of the ChangeRequest the partner created. |
| 251 | */ |
| 252 | public function requestChange(Change $change): Iri |
| 253 | { |
| 254 | return self::location($this->send('PATCH', $change->logisticsObject->value, $change->toJsonLd())); |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * POST a Verification on the object; returns the URI of the VerificationRequest. |
| 259 | */ |
| 260 | public function requestVerification(Verification $verification): Iri |
| 261 | { |
| 262 | return self::location($this->send('POST', $verification->logisticsObject->value, $verification->toJsonLd($this->apiVersion()))); |
| 263 | } |
| 264 | |
| 265 | public function getAuditTrail(Iri|string $object, ?DateTimeImmutable $updatedFrom = null, ?DateTimeImmutable $updatedTo = null, ?RequestStatus $status = null): AuditTrail |
| 266 | { |
| 267 | $query = []; |
| 268 | foreach (['updated-from' => $updatedFrom, 'updated-to' => $updatedTo] as $name => $value) { |
| 269 | if ($value !== null) { |
| 270 | $query[$name] = $value->setTimezone(new DateTimeZone('UTC'))->format('Ymd\THis\Z'); |
| 271 | } |
| 272 | } |
| 273 | if ($status !== null) { |
| 274 | $query['status'] = $status->shortName(); |
| 275 | } |
| 276 | $response = $this->send('GET', self::iri($object)->value . '/audit-trail' . ($query === [] ? '' : '?' . http_build_query($query, '', '&', PHP_QUERY_RFC3986))); |
| 277 | |
| 278 | return $this->parse(function () use ($response): AuditTrail { |
| 279 | $expanded = JsonLd::expand(self::body($response)); |
| 280 | if (!\in_array(Api::AuditTrail, $expanded->rootTypes(), true)) { |
| 281 | throw InvalidDocument::because('Invalid resource', 'The body is not an api:AuditTrail.'); |
| 282 | } |
| 283 | $requests = []; |
| 284 | foreach (Nodes::nodes($expanded->graph, $expanded->root, Api::hasActionRequest) as $node) { |
| 285 | $requests[] = ActionRequest::fromJsonLd(new ExpandedDocument($expanded->graph, $node, $expanded->context)); |
| 286 | } |
| 287 | |
| 288 | return new AuditTrail(Nodes::int($expanded->graph, $expanded->root, Api::hasLatestRevision) ?? 0, $requests, self::httpDate($response, 'Last-Modified')); |
| 289 | }, 'audit trail'); |
| 290 | } |
| 291 | |
| 292 | // --- Logistics events -------------------------------------------------- |
| 293 | |
| 294 | /** |
| 295 | * POST one event on one object; returns the event's URI. |
| 296 | * |
| 297 | * @param LogisticsEvent|array<string, mixed> $event |
| 298 | */ |
| 299 | public function postLogisticsEvent(Iri|string $object, LogisticsEvent|array $event): Iri |
| 300 | { |
| 301 | $json = $event instanceof LogisticsEvent ? $event->toJsonLd() : $event; |
| 302 | unset($json['@id']); |
| 303 | |
| 304 | return self::location($this->send('POST', self::iri($object)->value . '/logistics-events', $json)); |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * One event for several objects. Uses the 2.3 bulk endpoint when the |
| 309 | * negotiated version has it and the partner serves it; otherwise posts to |
| 310 | * each object in turn. Either way the answer is one result per object. |
| 311 | * |
| 312 | * @param array<string, mixed> $event the event without cargo:eventFor |
| 313 | * @param list<Iri|string> $objects |
| 314 | * @return list<BulkEventResult> |
| 315 | */ |
| 316 | public function postLogisticsEvents(array $event, array $objects): array |
| 317 | { |
| 318 | $iris = array_map(self::iri(...), $objects); |
| 319 | unset($event['@id'], $event['cargo:eventFor'], $event[Cargo::eventFor]); |
| 320 | if (ApiFeatures::available($this->apiVersion(), ApiFeatures::BULK_LOGISTICS_EVENTS)) { |
| 321 | try { |
| 322 | $body = [...$event, 'cargo:eventFor' => array_map(static fn(Iri $i): array => ['@id' => $i->value], $iris)]; |
| 323 | $response = $this->send('POST', $this->endpoint . '/logistics-events', $body, expect: [207]); |
| 324 | |
| 325 | return $this->parse(fn(): array => $this->bulkResults($response, $iris), 'multi-status response'); |
| 326 | } catch (OneRecordHttpException $e) { |
| 327 | if (!\in_array($e->status, [404, 405], true)) { |
| 328 | throw $e; |
| 329 | } |
| 330 | $this->logger->info('Bulk events not served; posting per object', ['endpoint' => $this->endpoint, 'status' => $e->status]); |
| 331 | } |
| 332 | } |
| 333 | $results = []; |
| 334 | foreach ($iris as $iri) { |
| 335 | try { |
| 336 | $results[] = new BulkEventResult($iri, 201, $this->postLogisticsEvent($iri, $event), null); |
| 337 | } catch (OneRecordHttpException $e) { |
| 338 | $results[] = new BulkEventResult($iri, $e->status, null, $e->error); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | return $results; |
| 343 | } |
| 344 | |
| 345 | public function getLogisticsEvents(Iri|string $object, ?EventFilter $filter = null): EventList |
| 346 | { |
| 347 | $iri = self::iri($object); |
| 348 | $response = $this->send('GET', $iri->value . '/logistics-events' . ($filter ?? EventFilter::all())->toQueryString()); |
| 349 | |
| 350 | return $this->parse(function () use ($response, $iri): EventList { |
| 351 | $expanded = JsonLd::expand(self::body($response)); |
| 352 | if (!\in_array(Api::Collection, $expanded->rootTypes(), true)) { |
| 353 | throw InvalidDocument::because('Invalid resource', 'The body is not an api:Collection.'); |
| 354 | } |
| 355 | $lastModified = self::httpDate($response, 'Last-Modified'); |
| 356 | $events = []; |
| 357 | foreach (Nodes::nodes($expanded->graph, $expanded->root, Api::hasItem) as $node) { |
| 358 | if ($node instanceof Iri) { |
| 359 | $events[] = $this->event($expanded->graph, $node, $iri, $lastModified); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | return new EventList($events, Nodes::int($expanded->graph, $expanded->root, Api::hasTotalItems) ?? \count($events), $lastModified); |
| 364 | }, 'event list'); |
| 365 | } |
| 366 | |
| 367 | public function getLogisticsEvent(Iri|string $event): LogisticsEvent |
| 368 | { |
| 369 | $iri = self::iri($event); |
| 370 | $response = $this->send('GET', $iri->value); |
| 371 | $object = new Iri(preg_replace('#/logistics-events/[^/]+$#', '', $iri->value) ?? $iri->value); |
| 372 | |
| 373 | return $this->parse(fn(): LogisticsEvent => $this->event(JsonLd::expand(self::body($response))->graph, $iri, $object, self::httpDate($response, 'Last-Modified')), 'logistics event'); |
| 374 | } |
| 375 | |
| 376 | // --- Subscriptions, delegations, notifications -------------------------- |
| 377 | |
| 378 | /** |
| 379 | * POST /subscriptions; returns the URI of the SubscriptionRequest. |
| 380 | */ |
| 381 | public function subscribe(Subscription $subscription): Iri |
| 382 | { |
| 383 | return self::location($this->send('POST', $this->endpoint . '/subscriptions', $subscription->toJsonLd())); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * GET /subscriptions?topicType&topic: what the partner wants to be told about a topic. |
| 388 | * |
| 389 | * @return list<Subscription> none, one, or several (the partner may answer with a Collection) |
| 390 | */ |
| 391 | public function getSubscriptions(TopicType $topicType, string $topic): array |
| 392 | { |
| 393 | $query = http_build_query(['topicType' => $topicType->shortName(), 'topic' => $topic], '', '&', PHP_QUERY_RFC3986); |
| 394 | $response = $this->send('GET', $this->endpoint . '/subscriptions?' . $query); |
| 395 | |
| 396 | return $this->parse(static function () use ($response): array { |
| 397 | $expanded = JsonLd::expand(self::body($response)); |
| 398 | if (\in_array(Api::Subscription, $expanded->rootTypes(), true)) { |
| 399 | return [Subscription::readNode($expanded->graph, $expanded->root)]; |
| 400 | } |
| 401 | $out = []; |
| 402 | foreach (Nodes::nodes($expanded->graph, $expanded->root, Api::hasItem) as $node) { |
| 403 | $out[] = Subscription::readNode($expanded->graph, $node); |
| 404 | } |
| 405 | |
| 406 | return $out; |
| 407 | }, 'subscriptions'); |
| 408 | } |
| 409 | |
| 410 | /** |
| 411 | * POST /access-delegations; returns the URI of the AccessDelegationRequest. |
| 412 | */ |
| 413 | public function requestAccessDelegation(AccessDelegation $delegation): Iri |
| 414 | { |
| 415 | $version = $this->apiVersion(); |
| 416 | if ($delegation->expiresAt !== null && !ApiFeatures::available($version, ApiFeatures::ACCESS_DELEGATION_EXPIRY)) { |
| 417 | // Rendering an old edition may drop a property; requesting an authorization may not silently widen it (AR-026). |
| 418 | throw new ClientException(\sprintf('%s speaks API %s, which cannot express api:expiresAt; an unlimited delegation would be requested instead. Drop the expiry deliberately or speak to a 2.3 partner.', $this->endpoint, $version->value)); |
| 419 | } |
| 420 | |
| 421 | return self::location($this->send('POST', $this->endpoint . '/access-delegations', $delegation->toJsonLd($version))); |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * POST /notifications on the partner's server (the partner is the subscriber). |
| 426 | */ |
| 427 | /** |
| 428 | * @param ?string $idempotencyKey a stable id for this delivery (OutboundNotification::$id), sent as |
| 429 | * an Idempotency-Key header so a receiver can drop a retry (AR-024) |
| 430 | */ |
| 431 | public function sendNotification(Notification $notification, ?string $idempotencyKey = null): void |
| 432 | { |
| 433 | $this->send('POST', $this->endpoint . '/notifications', $notification->toJsonLd(), expect: [204, 200], headers: $idempotencyKey === null ? [] : ['Idempotency-Key' => $idempotencyKey]); |
| 434 | } |
| 435 | |
| 436 | // --- Action requests --------------------------------------------------- |
| 437 | |
| 438 | public function getActionRequest(Iri|string $request): ActionRequest |
| 439 | { |
| 440 | $response = $this->send('GET', self::iri($request)->value); |
| 441 | |
| 442 | return $this->parse(static fn(): ActionRequest => ActionRequest::fromJsonLd(self::body($response)), 'action request'); |
| 443 | } |
| 444 | |
| 445 | /** |
| 446 | * PATCH /action-requests/{id}?status=…: accept, reject, acknowledge or revoke |
| 447 | * a request on a partner's server (its policy decides whether we may). |
| 448 | */ |
| 449 | public function updateActionRequestStatus(Iri|string $request, RequestStatus $status): void |
| 450 | { |
| 451 | $this->send('PATCH', self::iri($request)->value . '?status=' . $status->shortName(), null, expect: [204]); |
| 452 | } |
| 453 | |
| 454 | public function revokeActionRequest(Iri|string $request): void |
| 455 | { |
| 456 | $this->send('DELETE', self::iri($request)->value, null, expect: [204]); |
| 457 | } |
| 458 | |
| 459 | // --- Plumbing ---------------------------------------------------------- |
| 460 | |
| 461 | /** |
| 462 | * @param ?array<string, mixed> $body |
| 463 | * @param list<int> $expect acceptable status codes; empty means any 2xx |
| 464 | * @param array<string, string> $headers |
| 465 | */ |
| 466 | private function send(string $method, string $url, ?array $body = null, ?ApiVersion $version = null, array $expect = [], array $headers = []): ResponseInterface |
| 467 | { |
| 468 | // The token is this partner's; a resource IRI pointing anywhere else must not carry it (AR-001). |
| 469 | $origin = self::originOf($url); |
| 470 | if ($origin === null || !\in_array($origin, $this->origins, true)) { |
| 471 | throw new ClientException(\sprintf('%s is not on %s; this client sends its credentials only to that server (pass additionalOrigins for a partner that serves resources from several hosts).', $url, implode(', ', $this->origins))); |
| 472 | } |
| 473 | $version ??= $this->apiVersion(); |
| 474 | $request = $this->requests->createRequest($method, $url) |
| 475 | ->withHeader('Accept', self::JSON_LD . '; version=' . $version->value) |
| 476 | ->withHeader('Authorization', 'Bearer ' . $this->tokens->token($this->endpoint)); |
| 477 | if ($body !== null) { |
| 478 | $request = $request |
| 479 | ->withHeader('Content-Type', self::JSON_LD . '; version=' . $version->value) |
| 480 | ->withBody($this->streams->createStream(Json::encode($body, false))); |
| 481 | } |
| 482 | foreach ($headers as $name => $value) { |
| 483 | $request = $request->withHeader($name, $value); |
| 484 | } |
| 485 | try { |
| 486 | $response = $this->http->sendRequest($request); |
| 487 | } catch (ClientExceptionInterface $e) { |
| 488 | throw new ClientException(\sprintf('%s %s failed: %s', $method, $url, $e->getMessage()), 0, $e); |
| 489 | } |
| 490 | $status = $response->getStatusCode(); |
| 491 | if ($status >= 400) { |
| 492 | $error = null; |
| 493 | try { |
| 494 | $error = ErrorDocument::read((string) $response->getBody()); |
| 495 | } catch (Throwable) { |
| 496 | // Not a ONE Record error body (a proxy page, say); the status still tells the story. |
| 497 | } |
| 498 | $this->logger->info('ONE Record request refused', ['method' => $method, 'url' => $url, 'status' => $status, 'title' => $error?->title]); |
| 499 | |
| 500 | throw new OneRecordHttpException($status, $error, $response, $method, $url); |
| 501 | } |
| 502 | if ($status < 200 || $status >= 300 || ($expect !== [] && !\in_array($status, $expect, true))) { |
| 503 | throw new ClientException(\sprintf('%s %s answered %d where %s was expected.', $method, $url, $status, $expect === [] ? 'a 2xx' : implode(' or ', $expect))); |
| 504 | } |
| 505 | |
| 506 | return $response; |
| 507 | } |
| 508 | |
| 509 | /** |
| 510 | * @template T |
| 511 | * @param callable(): T $parse |
| 512 | * @return T |
| 513 | */ |
| 514 | private function parse(callable $parse, string $what) |
| 515 | { |
| 516 | try { |
| 517 | return $parse(); |
| 518 | } catch (ClientException $e) { |
| 519 | throw $e; |
| 520 | } catch (JsonLdException|InvalidDocument|ModelException $e) { |
| 521 | throw new ClientException(\sprintf('%s answered with a %s this client cannot read: %s', $this->endpoint, $what, $e->getMessage()), 0, $e); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | private function objectResponse(ResponseInterface $response, ?LogisticsObject $object): LogisticsObjectResponse |
| 526 | { |
| 527 | $revision = (int) $response->getHeaderLine('Revision'); |
| 528 | $latest = (int) $response->getHeaderLine('Latest-Revision'); |
| 529 | $type = $response->getHeaderLine('Type'); |
| 530 | $version = ApiVersion::tryFromString(self::versionParameter($response->getHeaderLine('Content-Type')) ?? '') ?? $this->apiVersion(); |
| 531 | |
| 532 | return new LogisticsObjectResponse($object, $revision > 0 ? $revision : $latest, $latest > 0 ? $latest : $revision, self::httpDate($response, 'Last-Modified'), $type === '' ? $object?->mostSpecificType() : $type, $version); |
| 533 | } |
| 534 | |
| 535 | /** |
| 536 | * @param list<Iri> $objects |
| 537 | * @return list<BulkEventResult> |
| 538 | */ |
| 539 | private function bulkResults(ResponseInterface $response, array $objects): array |
| 540 | { |
| 541 | $expanded = JsonLd::expand(self::body($response)); |
| 542 | $graph = $expanded->graph; |
| 543 | $results = []; |
| 544 | foreach (Nodes::nodes($graph, $expanded->root, Api::hasCreationResult) as $node) { |
| 545 | $object = Nodes::iri($graph, $node, Api::hasLogisticsObject); |
| 546 | if ($object === null) { |
| 547 | continue; |
| 548 | } |
| 549 | $errorNode = Nodes::node($graph, $node, Api::hasError); |
| 550 | $results[] = new BulkEventResult( |
| 551 | $object, |
| 552 | Nodes::int($graph, $node, Api::hasHTTPStatus) ?? 0, |
| 553 | Nodes::iri($graph, $node, Api::hasLogisticsEvent), |
| 554 | $errorNode === null ? null : ErrorDocument::readNode($graph, $errorNode), |
| 555 | ); |
| 556 | } |
| 557 | |
| 558 | return $results; |
| 559 | } |
| 560 | |
| 561 | private function event(Graph $graph, Iri $iri, Iri $object, ?DateTimeImmutable $fallbackCreated): LogisticsEvent |
| 562 | { |
| 563 | $subgraph = new Graph(); |
| 564 | $seen = []; |
| 565 | self::collect($graph, $iri, $subgraph, $seen); |
| 566 | $for = Nodes::iri($subgraph, $iri, Cargo::eventFor); |
| 567 | $created = Nodes::dateTime($subgraph, $iri, Cargo::creationDate) ?? $fallbackCreated ?? ($this->clock?->now() ?? new DateTimeImmutable('now', new DateTimeZone('UTC'))); |
| 568 | |
| 569 | return new LogisticsEvent($iri, $for ?? $object, $subgraph, $created); |
| 570 | } |
| 571 | |
| 572 | /** |
| 573 | * One visited set for the whole walk: a set per branch would terminate cycles but |
| 574 | * revisit every shared descendant, which is exponential on a diamond-shaped graph (AR-004). |
| 575 | * |
| 576 | * @param array<string, true> $seen |
| 577 | */ |
| 578 | private static function collect(Graph $graph, Iri|BlankNode $node, Graph $into, array &$seen): void |
| 579 | { |
| 580 | $seen[$node->toNTriples()] = true; |
| 581 | foreach ($graph->about($node) as $triple) { |
| 582 | $into->add(new Triple($triple->subject, $triple->predicate, $triple->object)); |
| 583 | $object = $triple->object; |
| 584 | if (($object instanceof Iri || $object instanceof BlankNode) && !isset($seen[$object->toNTriples()]) && ($object instanceof BlankNode || LogisticsObject::isEmbeddedId($object))) { |
| 585 | self::collect($graph, $object, $into, $seen); |
| 586 | } |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | /** |
| 591 | * The revision properties are response metadata the server adds to a body |
| 592 | * (and the response object carries them); without them the object compares |
| 593 | * equal to what the holder stored and can be diffed or republished as is. |
| 594 | */ |
| 595 | private static function withoutRevisionProperties(LogisticsObject $object): LogisticsObject |
| 596 | { |
| 597 | $graph = new Graph(); |
| 598 | foreach ($object->graph as $triple) { |
| 599 | if ($triple->subject->equals($object->iri) && \in_array($triple->predicate->value, [Api::hasRevision, Api::hasLatestRevision], true)) { |
| 600 | continue; |
| 601 | } |
| 602 | $graph->add($triple); |
| 603 | } |
| 604 | |
| 605 | return $object->withGraph($graph); |
| 606 | } |
| 607 | |
| 608 | /** |
| 609 | * scheme://host:port with the scheme and host lowercased and the default |
| 610 | * port spelled out, so "https://A.example" and "https://a.example:443" are |
| 611 | * one origin. Null for anything that is not a plain http(s) URL, including |
| 612 | * URLs with userinfo, which exist mainly to confuse origin checks. |
| 613 | */ |
| 614 | private static function originOf(string $url): ?string |
| 615 | { |
| 616 | $parts = parse_url($url); |
| 617 | if ($parts === false || !isset($parts['scheme'], $parts['host']) || isset($parts['user'], $parts['pass']) || isset($parts['user'])) { |
| 618 | return null; |
| 619 | } |
| 620 | $scheme = strtolower($parts['scheme']); |
| 621 | if (!\in_array($scheme, ['http', 'https'], true)) { |
| 622 | return null; |
| 623 | } |
| 624 | $port = $parts['port'] ?? ($scheme === 'https' ? 443 : 80); |
| 625 | |
| 626 | return $scheme . '://' . strtolower($parts['host']) . ':' . $port; |
| 627 | } |
| 628 | |
| 629 | private static function iri(Iri|string $value): Iri |
| 630 | { |
| 631 | return $value instanceof Iri ? $value : new Iri($value); |
| 632 | } |
| 633 | |
| 634 | private static function body(ResponseInterface $response): string |
| 635 | { |
| 636 | return (string) $response->getBody(); |
| 637 | } |
| 638 | |
| 639 | private static function location(ResponseInterface $response): Iri |
| 640 | { |
| 641 | $location = $response->getHeaderLine('Location'); |
| 642 | if ($location === '') { |
| 643 | throw new ClientException(\sprintf('The server answered %d without a Location header.', $response->getStatusCode())); |
| 644 | } |
| 645 | |
| 646 | return new Iri($location); |
| 647 | } |
| 648 | |
| 649 | private static function httpDate(ResponseInterface $response, string $header): ?DateTimeImmutable |
| 650 | { |
| 651 | $value = $response->getHeaderLine($header); |
| 652 | if ($value === '') { |
| 653 | return null; |
| 654 | } |
| 655 | $parsed = DateTimeImmutable::createFromFormat('D, d M Y H:i:s \G\M\T', $value, new DateTimeZone('UTC')); |
| 656 | |
| 657 | return $parsed === false ? null : $parsed; |
| 658 | } |
| 659 | |
| 660 | private static function versionParameter(string $contentType): ?string |
| 661 | { |
| 662 | return preg_match('/;\s*version\s*=\s*"?([0-9.]+)"?/i', $contentType, $m) === 1 ? $m[1] : null; |
| 663 | } |
| 664 | } |