<?php
namespace Aws\Endpoint;
/**
* Provides endpoints based on an endpoint pattern configuration array.
*/
class PatternEndpointProvider
{
/** @var array */
private $patterns;
/**
* @param array $patterns Hash of endpoint patterns mapping to endpoint
* configurations.
*/
public function __construct(array $patterns)
{
$this->patterns = $patterns;
}
public function __invoke(array $args = [])
{
$service = isset($args['service']) ? $args['service'] : '';
$region = isset($args['region']) ? $args['region'] : '';
$keys = ["{$region}/{$service}", "{$region}/*", "*/{$service}", "*/*"];
foreach ($keys as $key) {
if (isset($this->patterns[$key])) {
return $this->expand(
$this->patterns[$key],
isset($args['scheme']) ? $args['scheme'] : 'https',
$service,
$region
);
}
}
return null;
}
private function expand(array $config, $scheme, $service, $region)
{
$config['endpoint'] = $scheme . '://'
. strtr($config['endpoint'], [
'{service}' => $service,
'{region}' => $region
]);
return $config;
}
}