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<?php |
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namespace Dudlewebs\WPMCS\s3\Aws\EndpointV2; |
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|
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use Dudlewebs\WPMCS\s3\Aws\EndpointV2\Ruleset\Ruleset; |
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use Dudlewebs\WPMCS\s3\Aws\EndpointV2\Ruleset\RulesetEndpoint; |
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use Dudlewebs\WPMCS\s3\Aws\Exception\UnresolvedEndpointException; |
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use Dudlewebs\WPMCS\s3\Aws\LruArrayCache; |
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/** |
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* Given a service's Ruleset and client-provided input parameters, provides |
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* either an object reflecting the properties of a resolved endpoint, |
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* or throws an error. |
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*/ |
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class EndpointProviderV2 |
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{ |
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/** @var Ruleset */ |
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private $ruleset; |
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/** @var LruArrayCache */ |
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private $cache; |
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public function __construct(array $ruleset, array $partitions) |
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{ |
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$this->ruleset = new Ruleset($ruleset, $partitions); |
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$this->cache = new LruArrayCache(100); |
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} |
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/** |
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* @return Ruleset |
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*/ |
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public function getRuleset() |
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{ |
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return $this->ruleset; |
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} |
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/** |
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* Given a Ruleset and input parameters, determines the correct endpoint |
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* or an error to be thrown for a given request. |
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* |
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* @return RulesetEndpoint |
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* @throws UnresolvedEndpointException |
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*/ |
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public function resolveEndpoint(array $inputParameters) |
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{ |
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$hashedParams = $this->hashInputParameters($inputParameters); |
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$match = $this->cache->get($hashedParams); |
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if (!\is_null($match)) { |
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return $match; |
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} |
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$endpoint = $this->ruleset->evaluate($inputParameters); |
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if ($endpoint === \false) { |
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throw new UnresolvedEndpointException('Unable to resolve an endpoint using the provider arguments: ' . \json_encode($inputParameters)); |
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} |
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$this->cache->set($hashedParams, $endpoint); |
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return $endpoint; |
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} |
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private function hashInputParameters($inputParameters) |
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{ |
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return \md5(\serialize($inputParameters)); |
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} |
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} |
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