class Http in Migrate Plus 8.4

Retrieve data over an HTTP connection for migration.

Example:

source:
  plugin: url
  data_fetcher_plugin: http
  headers:
    Accept: application/json
    User-Agent: Internet Explorer 6
    Authorization-Key: secret
    Arbitrary-Header: foobarbaz

Plugin annotation

@DataFetcher(
  id = "http",
  title = @Translation("HTTP")
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\migrate_plus\DataFetcherPluginBase implements DataFetcherPluginInterface
      • class \Drupal\migrate_plus\Plugin\migrate_plus\data_fetcher\Http implements ContainerFactoryPluginInterface

2 files declare their use of Http

HttpTest.php in tests/src/Unit/data_fetcher/HttpTest.php

PHPUnit tests for the Migrate Plus Http 'data fetcher' plugin.

HttpTest.php in tests/src/Kernel/Plugin/migrate_plus/data_fetcher/HttpTest.php

File

src/Plugin/migrate_plus/data_fetcher/Http.php, line 31

Namespace

Drupal\migrate_plus\Plugin\migrate_plus\data_fetcher

class Http extends DataFetcherPluginBase implements ContainerFactoryPluginInterface {

  /**
   * The HTTP client.
   *
   * @var \GuzzleHttp\Client
   */
  protected $httpClient;

  /**
   * The request headers.
   *
   * @var array
   */
  protected $headers = [];

  /**
   * The data retrieval client.
   *
   * @var \Drupal\migrate_plus\AuthenticationPluginInterface
   */
  protected $authenticationPlugin;

  /**
   * {@inheritdoc}
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->httpClient = \Drupal::httpClient();

    // Ensure there is a 'headers' key in the configuration.
    $configuration += [
      'headers' => [],
    ];
    $this
      ->setRequestHeaders($configuration['headers']);
  }

  /**
   * Returns the initialized authentication plugin.
   *
   * @return \Drupal\migrate_plus\AuthenticationPluginInterface
   *   The authentication plugin.
   */
  public function getAuthenticationPlugin() {
    if (!isset($this->authenticationPlugin)) {
      $this->authenticationPlugin = \Drupal::service('plugin.manager.migrate_plus.authentication')
        ->createInstance($this->configuration['authentication']['plugin'], $this->configuration['authentication']);
    }
    return $this->authenticationPlugin;
  }

  /**
   * {@inheritdoc}
   */
  public function setRequestHeaders(array $headers) {
    $this->headers = $headers;
  }

  /**
   * {@inheritdoc}
   */
  public function getRequestHeaders() {
    return !empty($this->headers) ? $this->headers : [];
  }

  /**
   * {@inheritdoc}
   */
  public function getResponse($url) {
    try {
      $options = [
        'headers' => $this
          ->getRequestHeaders(),
      ];
      if (!empty($this->configuration['authentication'])) {
        $options = array_merge($options, $this
          ->getAuthenticationPlugin()
          ->getAuthenticationOptions());
      }
      $response = $this->httpClient
        ->get($url, $options);
      if (empty($response)) {
        throw new MigrateException('No response at ' . $url . '.');
      }
    } catch (RequestException $e) {
      throw new MigrateException('Error message: ' . $e
        ->getMessage() . ' at ' . $url . '.');
    }
    return $response;
  }

  /**
   * {@inheritdoc}
   */
  public function getResponseContent($url) {
    $response = $this
      ->getResponse($url);
    return $response
      ->getBody();
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DataFetcherPluginBase::create	public static	function
DependencySerializationTrait::$_entityStorages	protected	property	An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
Http::$authenticationPlugin	protected	property	The data retrieval client.
Http::$headers	protected	property	The request headers.
Http::$httpClient	protected	property	The HTTP client.
Http::getAuthenticationPlugin	public	function	Returns the initialized authentication plugin.	1
Http::getRequestHeaders	public	function	Get the currently set request headers. Overrides DataFetcherPluginInterface::getRequestHeaders
Http::getResponse	public	function	Return Http Response object for a given url. Overrides DataFetcherPluginInterface::getResponse
Http::getResponseContent	public	function	Return content. Overrides DataFetcherPluginInterface::getResponseContent
Http::setRequestHeaders	public	function	Set the client headers. Overrides DataFetcherPluginInterface::setRequestHeaders
Http::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object. Overrides PluginBase::__construct	1
MessengerTrait::$messenger	protected	property	The messenger.	29
MessengerTrait::messenger	public	function	Gets the messenger.	29
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
StringTranslationTrait::$stringTranslation	protected	property	The string translation service.	1
StringTranslationTrait::formatPlural	protected	function	Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals	protected	function	Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation	protected	function	Gets the string translation service.
StringTranslationTrait::setStringTranslation	public	function	Sets the string translation service to use.	2
StringTranslationTrait::t	protected	function	Translates a string to the current language or to a given language.