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<?php |
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/** |
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* This file is part of the Teazee package. |
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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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* @license MIT License |
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*/ |
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namespace Teazee\Provider; |
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use RuntimeException; |
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use Teazee\Exception\ChainNoResult; |
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use Teazee\ZoneInfo; |
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/** |
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* Query multiple providers until a result is found. |
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* |
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* @author Michael Crumm <[email protected]> |
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*/ |
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class Chain implements Provider |
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{ |
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/** |
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* @var Provider[] |
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*/ |
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private $providers = []; |
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/** |
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* Chain constructor. |
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* |
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* @param array $providers |
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*/ |
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public function __construct(array $providers = []) |
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{ |
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$this->providers = $providers; |
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} |
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/** |
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* Returns the name of this provider. |
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* |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return 'chain'; |
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} |
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/** |
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* Finds a TimeZone for a location on the surface of the earth. |
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* |
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* @param string|float $lat Coordinate latitude. |
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* @param string|float $lng Coordinate longitude. |
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* @param int|null $timestamp Seconds since Jan 1, 1970 UTC. |
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* |
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* @return ZoneInfo |
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*/ |
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public function find($lat, $lng, $timestamp = null) |
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{ |
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$exceptions = []; |
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/** @var Provider $provider */ |
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foreach ($this->providers as $provider) { |
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try { |
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return $provider->find($lat, $lng, $timestamp); |
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} catch (RuntimeException $ex) { |
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$exceptions[] = $ex; |
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} |
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} |
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throw new ChainNoResult( |
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sprintf('No provider could find %f,%f%s', $lat, $lng, $timestamp ? ' @'.$timestamp : ''), |
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$exceptions |
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); |
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} |
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} |
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wyndow /
teazee
