ozean12 / googlepubsub
A Symfony 2/3 integration with Google Cloud PubSub
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Requires
- php: ^7.0|^5.0
- google/cloud: ^0.35
- jms/serializer-bundle: ^2.4
Requires (Dev)
- phpunit/phpunit: ~4.8|~5.0
This package is not auto-updated.
Last update: 2024-11-09 20:39:43 UTC
README
Ozean12GooglePubSubBundle
A Symfony 2 / Symfony 3 bundle which integrates Google Cloud Pub Sub with your application.
Installation
1. Require the bundle:
composer require ozean12/googlepubsub
2. Set it up:
// app/AppKernel.php public function registerBundles() { $bundles = [ // ... new JMS\SerializerBundle\JMSSerializerBundle(), // if not already enabled new Ozean12\WebTranslateItBundle\Ozean12WebTranslateItBundle(), ]; // ... }
# app/config/config.yml ozean12_google_pub_sub: # your Google Cloud Project ID project_id: "%google_pub_sub_project_id%" # path to your Google Cloud Application Credentials file key_file_path: "%google_pub_sub_key_file_path%" # add this if you want to use logger (see Using Logger section for more info) logger_channel: pub_sub # list of PubSub topics (See Publishing section for more info) topics: - my_topic # list of Push subscriptions in format (subscription_name: service_name) (see Subscribing to Push messages section for more info) push_subscriptions: my_push_subscription: my_bundle.my_firts_push.subscriber
Usage
1. Publishing messages
In order to publish the message to PubSub, you need to define the topic first, as described in previous section. Once topic is defined, it can be accessed within the Publisher service:
$message = new MyTopicMessage(); $publisher = $this->container->get('ozean12_google_pubsub.publisher.my_topic'); $result = $publisher->publish($message);
MyTopicMessage
is a simple class which implements the Ozean12\GooglePubSubBundle\DTO\MessageDataDTOInterface
interface and holds the data which needs to be included in message.
publish
method also accepts attributes
array as a second argument.
If topic does not exist, it will be created automatically.
Result of the call will be an instance of Ozean12\GooglePubSubBundle\DTO\PublishMessageResultDTO
which will contain the ids of created messages.
2. Subscribing to Push messages
When using the Push subscription, you need to create the endpoint which will receive the message from Google Pub/Sub and then pass it to PushSubscriberManager
. This topic is outside the scope of the bundle. An example of this setup using the FOS REST Bundle:
// GoogleCloudController.php use Ozean12\GooglePubSubBundle\DTO\PushMessageRequestDTO; /** * Class GoogleCloudController * * @Version("v1") * @Route("/google-cloud/") */ class GoogleCloudController extends FOSRestController { /** * @ApiDoc( * resource = true, * description = "Receive a new PubSub message and process it", * statusCodes = { * 204 = "Returned when successful", * 403 = "Returned when access denied" * } * ) * * @ParamConverter("message", converter="fos_rest.request_body") * * @Route("pub-sub") * @Method({"POST"}) * @View() * * @param PushMessageRequestDTO $message * @return mixed */ public function pubSub(PushMessageRequestDTO $message) { $this->get('ozean12_google_pubsub.push_subscriber_manager.service')->processMessage($message); } }
By using the @ParamConverter
annotation Symfony will automatically convert the request to PushMessageRequestDTO
PushMessageRequestDTO
has two properties:
message
: instance ofPushMessageDTO
. For all the fields refer to Push request bodysubscription
: a string with the name of Pub/Sub subscription
The PushSubscriberManager->processMessage()
method will iterate over all registered subscribers and run the one with the name equal to the subscription property of the message. Example of subscriber:
// MyPushSubscriber.php use Ozean12\GooglePubSubBundle\DTO\PushMessageDTO; use Ozean12\GooglePubSubBundle\Service\Subscriber\PushSubscriberInterface; /** * Class MyPushSubscriber */ class MyPushSubscriber implements PushSubscriberInterface { /** * {@inheritdoc} */ public function process(PushMessageDTO $message) { /** @var SendTransactionalEmailDataDTO $emailDTO */ $data = base64_decode($message->getData()) // process your data here } }
3. Using Logger
If you want to log the interaction with Google services, setup the logger_channel
option with the channel you want to use. Ex:
monolog: handlers: # ... pub_sub: type: stream path: "%kernel.logs_dir%/pub_sub_%kernel.environment%.log" level: info channels: [pub_sub] channels: # ... - pub_sub ozean12_google_pub_sub: # ... logger_channel: pub_sub
This will produce following log entries:
[2016-12-23 17:51:42] pub_sub.INFO: New topic my_topic created {"topic":"my_topic"} []
[2016-12-23 17:57:01] pub_sub.INFO: Message(s) 123456789 submitted to topic my_topic {"messages":"123456789","topic":"my_topic"} []
[2017-01-04 15:57:32] pub_sub.INFO: Received message : my_first_subscription[123456789]; Processed with MyBundle\Service\GooglePubSub\Subscriber\MyFirstSubscriber subscriber {"message":"123456789","subscription":"my_first_subscription","subscriberClass":"MyBundle\\Service\\GooglePubSub\\Subscriber\\MyFirstSubscriber"} []