69 lines
1.7 KiB
PHP
69 lines
1.7 KiB
PHP
<?php
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namespace Aws\EndpointV2;
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use Aws\EndpointV2\Ruleset\Ruleset;
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use Aws\Exception\UnresolvedEndpointException;
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use 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 ($endpoint === false) {
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throw new UnresolvedEndpointException(
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'Unable to resolve an endpoint using the provider arguments: '
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. json_encode($inputParameters)
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);
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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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