Add cron pinging endpoint

[MAILPOET-6029]

mailpoet/lib/API/JSON/v1/SendingQueue.php

@@ -8,6 +8,7 @@ use MailPoet\API\JSON\Response;
 use MailPoet\API\JSON\ResponseBuilders\SendingQueuesResponseBuilder;
 use MailPoet\Config\AccessControl;
 use MailPoet\Cron\ActionScheduler\Actions\DaemonTrigger;
+use MailPoet\Cron\CronHelper;
 use MailPoet\Cron\CronTrigger;
 use MailPoet\Cron\Triggers\WordPress;
 use MailPoet\Cron\Workers\SendingQueue\SendingQueue as SendingQueueWorker;
@@ -59,6 +60,9 @@ class SendingQueue extends APIEndpoint {
   /** @var SendingQueuesResponseBuilder */
   private $sendingQueuesResponseBuilder;
 
+  /** @var CronHelper */
+  private $cronHelper;
+
   public function __construct(
     SubscribersFeature $subscribersFeature,
     NewslettersRepository $newsletterRepository,
@@ -69,7 +73,8 @@ class SendingQueue extends APIEndpoint {
     SettingsController $settings,
     DaemonTrigger $actionSchedulerDaemonTriggerAction,
     NewsletterValidator $newsletterValidator,
-    SendingQueuesResponseBuilder $sendingQueuesResponseBuilder
+    SendingQueuesResponseBuilder $sendingQueuesResponseBuilder,
+    CronHelper $cronHelper
   ) {
     $this->subscribersFeature = $subscribersFeature;
     $this->subscribersFinder = $subscribersFinder;
@@ -81,6 +86,7 @@ class SendingQueue extends APIEndpoint {
     $this->actionSchedulerDaemonTriggerAction = $actionSchedulerDaemonTriggerAction;
     $this->newsletterValidator = $newsletterValidator;
     $this->sendingQueuesResponseBuilder = $sendingQueuesResponseBuilder;
+    $this->cronHelper = $cronHelper;
   }
 
   public function add($data = []) {
@@ -245,6 +251,22 @@ class SendingQueue extends APIEndpoint {
     }
   }
 
+  public function pingCron() {
+    try {
+      $cronPingResponse = $this->cronHelper->pingDaemon();
+    } catch (\Exception $e) {
+      return $this->errorResponse([
+        APIError::UNKNOWN => $e->getMessage(),
+      ]);
+    }
+    if (!$this->cronHelper->validatePingResponse($cronPingResponse)) {
+      return $this->errorResponse([
+        APIError::UNKNOWN => $cronPingResponse,
+      ]);
+    }
+    return $this->successResponse();
+  }
+
   /**
    * In case the newsletter was switched to sending trigger the background job immediately.
    * This is done so that user immediately sees that email is sending and doesn't have to wait on WP Cron to start it.

mailpoet/tests/integration/API/JSON/v1/SendingQueueTest.php

@@ -5,6 +5,8 @@ namespace MailPoet\Test\API\JSON\v1;
 use Codeception\Util\Stub;
 use MailPoet\API\JSON\Response as APIResponse;
 use MailPoet\API\JSON\v1\SendingQueue as SendingQueueAPI;
+use MailPoet\Cron\CronHelper;
+use MailPoet\Cron\DaemonHttpRunner;
 use MailPoet\Cron\Workers\SendingQueue\SendingQueue;
 use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Entities\ScheduledTaskEntity;
@@ -228,4 +230,41 @@ class SendingQueueTest extends \MailPoetTest {
 
     $this->assertSame($expectedResult, $data);
   }
+
+  public function testItReturnsErrorIfCronPingThrowsException() {
+    $errorMessage = 'some error';
+    $sendingQueue = $this->getServiceWithOverrides(SendingQueueAPI::class, [
+      'cronHelper' => Stub::make(CronHelper::class, ['pingDaemon' => function () use ($errorMessage) {
+        throw new \Exception($errorMessage);
+      }]),
+    ]);
+    $response = $sendingQueue->pingCron();
+    $response = $response->getData();
+    verify($response['errors'][0])->isArray();
+    verify($response['errors'][0]['message'])->stringContainsString($errorMessage);
+    verify($response['errors'][0]['error'])->stringContainsString('unknown');
+  }
+
+  public function testItReturnsErrorIfCronPingResponseIsInvalid() {
+    $errorResponse = 'timed out';
+    $sendingQueue = $this->getServiceWithOverrides(SendingQueueAPI::class, [
+      'cronHelper' => Stub::make(CronHelper::class, ['pingDaemon' => $errorResponse]),
+    ]);
+    $response = $sendingQueue->pingCron();
+    $response = $response->getData();
+    verify($response['errors'][0])->isArray();
+    verify($response['errors'][0]['message'])->stringContainsString($errorResponse);
+    verify($response['errors'][0]['error'])->stringContainsString('unknown');
+  }
+
+  public function testItPingsCronSuccessfully() {
+    $sendingQueue = $this->getServiceWithOverrides(SendingQueueAPI::class, [
+      'cronHelper' => Stub::make(CronHelper::class, ['pingDaemon' => DaemonHttpRunner::PING_SUCCESS_RESPONSE]),
+    ]);
+    $response = $sendingQueue->pingCron();
+    verify($response->status)->equals(200);
+    $response = $response->getData();
+    verify($response['data'])->empty();
+    verify(empty($response['errors']))->true();
+  }
 }