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<?php |
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namespace SilverStripe\CKANRegistry\Service; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\Psr7\Request; |
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use RuntimeException; |
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use SilverStripe\CKANRegistry\Model\Resource; |
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use SilverStripe\Core\Extensible; |
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use SilverStripe\Core\Injector\Injectable; |
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class APIClient implements APIClientInterface |
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{ |
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use Extensible; |
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use Injectable; |
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private static $dependencies = [ |
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'GuzzleClient' => '%$' . Client::class, |
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]; |
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/** |
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* @var Client |
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*/ |
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protected $guzzleClient; |
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/** |
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* Instance cache for repeated calls within the same request |
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* |
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* @var array[] |
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*/ |
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protected $cache; |
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public function getPackage(Resource $resource) |
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{ |
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return $this->getData($resource, 'package_show', 'DataSet'); |
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} |
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public function getSearchData(Resource $resource) |
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{ |
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return $this->getData($resource, 'datastore_search', 'Identifier'); |
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} |
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public function getData(Resource $resource, $action = 'datastore_search', $id = 'Identifier') |
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{ |
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$endpoint = sprintf( |
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'%s/api/%s/action/%s?id=%s', |
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trim($resource->Endpoint, '/'), |
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APIClientInterface::API_VERSION, |
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$action, |
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$resource->{$id} |
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); |
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// Check for a cached result |
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if (isset($this->cache[$endpoint])) { |
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return $this->cache[$endpoint]; |
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} |
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$request = new Request('GET', $endpoint); |
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$response = $this->getGuzzleClient()->send($request, $this->getClientOptions()); |
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$statusCode = $response->getStatusCode(); |
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if ($statusCode < 200 || $statusCode >= 300) { |
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throw new RuntimeException('CKAN API is not available. Error code ' . $statusCode); |
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} |
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if (!count(preg_grep('#application/json#', $response->getHeader('Content-Type')))) { |
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throw new RuntimeException('CKAN API returns an invalid response: Content-Type is not JSON'); |
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} |
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$responseBody = json_decode($response->getBody()->getContents(), true); |
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if (!$responseBody || !isset($responseBody['success']) || !$responseBody['success']) { |
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throw new RuntimeException('CKAN API returns an invalid response: Responded as invalid'); |
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} |
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// Store cached result for subsequent calls within the same request |
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$this->cache[$endpoint] = $responseBody; |
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return $responseBody; |
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} |
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/** |
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* @return \GuzzleHttp\Client |
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*/ |
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protected function getGuzzleClient() |
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{ |
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return $this->guzzleClient; |
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} |
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/** |
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* @param Client $guzzleClient |
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* @return $this |
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*/ |
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public function setGuzzleClient(Client $guzzleClient) |
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{ |
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$this->guzzleClient = $guzzleClient; |
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return $this; |
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} |
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/** |
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* Get Guzzle client options |
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* |
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* @return array |
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*/ |
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protected function getClientOptions() |
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{ |
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$options = [ |
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'http_errors' => false, |
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]; |
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$this->extend('updateClientOptions', $options); |
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return $options; |
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} |
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} |
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silverstripe /
silverstripe-ckan-registry
