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<?php |
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/* |
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* This file is part of the OverblogGraphQLBundle package. |
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* |
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* (c) Overblog <http://github.com/overblog/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Overblog\GraphQLBundle\Resolver; |
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use GraphQL\Executor\Promise\Adapter\SyncPromise; |
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use GraphQL\Executor\Promise\Promise; |
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use GraphQL\Executor\Promise\PromiseAdapter; |
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use Overblog\GraphQLBundle\Error\UserError; |
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use Overblog\GraphQLBundle\Error\UserWarning; |
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use Overblog\GraphQLBundle\Relay\Connection\Output\Connection; |
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use Overblog\GraphQLBundle\Relay\Connection\Output\Edge; |
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class AccessResolver |
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{ |
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/** @var PromiseAdapter */ |
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private $promiseAdapter; |
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public function __construct(PromiseAdapter $promiseAdapter) |
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{ |
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$this->promiseAdapter = $promiseAdapter; |
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} |
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public function resolve(callable $accessChecker, callable $resolveCallback, array $resolveArgs = [], $isMutation = false) |
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{ |
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// operation is mutation and is mutation field |
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if ($isMutation) { |
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if (!$this->hasAccess($accessChecker, null, $resolveArgs)) { |
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throw new UserError('Access denied to this field.'); |
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} |
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$result = call_user_func_array($resolveCallback, $resolveArgs); |
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} else { |
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$result = $this->filterResultUsingAccess($accessChecker, $resolveCallback, $resolveArgs); |
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} |
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return $result; |
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} |
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private function filterResultUsingAccess(callable $accessChecker, callable $resolveCallback, array $resolveArgs = []) |
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{ |
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$result = call_user_func_array($resolveCallback, $resolveArgs); |
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if ($result instanceof Promise) { |
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$result = $result->adoptedPromise; |
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} |
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if ($this->promiseAdapter->isThenable($result) || $result instanceof SyncPromise) { |
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return $this->promiseAdapter->then( |
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new Promise($result, $this->promiseAdapter), |
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function ($result) use ($accessChecker, $resolveArgs) { |
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return $this->processFilter($result, $accessChecker, $resolveArgs); |
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} |
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); |
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} |
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return $this->processFilter($result, $accessChecker, $resolveArgs); |
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} |
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private function processFilter($result, $accessChecker, $resolveArgs) |
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{ |
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if (is_array($result)) { |
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$result = array_map( |
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function ($object) use ($accessChecker, $resolveArgs) { |
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return $this->hasAccess($accessChecker, $object, $resolveArgs) ? $object : null; |
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}, |
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$result |
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); |
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} elseif ($result instanceof Connection) { |
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$result->edges = array_map( |
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function (Edge $edge) use ($accessChecker, $resolveArgs) { |
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$edge->node = $this->hasAccess($accessChecker, $edge->node, $resolveArgs) ? $edge->node : null; |
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return $edge; |
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}, |
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$result->edges |
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); |
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} elseif (!$this->hasAccess($accessChecker, $result, $resolveArgs)) { |
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throw new UserWarning('Access denied to this field.'); |
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} |
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return $result; |
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} |
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private function hasAccess(callable $accessChecker, $object, array $resolveArgs = []) |
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{ |
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$resolveArgs[] = $object; |
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$access = (bool) call_user_func_array($accessChecker, $resolveArgs); |
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return $access; |
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} |
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} |
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overblog /
GraphQLBundle
