68 lines
1.8 KiB
PHP
68 lines
1.8 KiB
PHP
<?php
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namespace Aws\Common;
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/**
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* Provides endpoints based on a rules configuration file.
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*/
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class RulesEndpointProvider
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{
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/** @var array */
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private $patterns;
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/**
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* @param array $patterns Hash of endpoint patterns mapping to endpoint
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* configurations.
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*/
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public function __construct(array $patterns)
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{
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$this->patterns = $patterns;
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}
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/**
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* Creates and returns the default RulesEndpointProvider based on the
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* public rule sets.
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*
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* @return self
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*/
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public static function fromDefaults()
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{
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return new self(require __DIR__ . '/Resources/public-endpoints.php');
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}
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public function __invoke(array $args = array())
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{
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if (!isset($args['service'])) {
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throw new \InvalidArgumentException('Requires a "service" value');
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}
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if (!isset($args['region'])) {
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throw new \InvalidArgumentException('Requires a "region" value');
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}
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foreach ($this->getKeys($args['region'], $args['service']) as $key) {
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if (isset($this->patterns['endpoints'][$key])) {
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return $this->expand($this->patterns['endpoints'][$key], $args);
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}
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}
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throw new \RuntimeException('Could not resolve endpoint');
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}
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private function expand(array $config, array $args)
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{
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$scheme = isset($args['scheme']) ? $args['scheme'] : 'https';
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$config['endpoint'] = $scheme . '://' . str_replace(
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array('{service}', '{region}'),
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array($args['service'], $args['region']),
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$config['endpoint']
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);
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return $config;
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}
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private function getKeys($region, $service)
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{
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return array("$region/$service", "$region/*", "*/$service", "*/*");
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}
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}
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