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Integrations with Magento, end to end story: RabbitMQ, APIs
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Magento 2 Architect:- Magento Service Layer- Composer Integration- Magento CLI- Rabbit MQ Integration
@vrann Eugene Tulika
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On average, Magento store integrates with 15 different external systems
Integrations Framework:• API In supported by Web API (CE) and RabbitMQ (EE)• API Out supported by RabbitMQ (EE)
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Magento Chat Bot for Facebook Messenger
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Use-Case: Store With Hand-Picked Books
• Niche customers with unusual requests
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Use-Case: Store With Hand-Picked Books
• Facebook is the best way to reach larger and targeted audience• Facebook Page representing the store• Customers don’t want to leave Facebook to shop in store• Customers ask questions in Messenger
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Facebook Chat Bots API
• Manager cannot handle all communications manually
• Facebook webhooks for messages received in the chat
• Facebook API for responses• Backed by simple AI to understand the
context of discussion
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Facebook POSTs message to the Callback
Callback.php200 OK
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Callback POSTs response to Facebook API
Callback.php API
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Integration with Magento
IN/OUT Using Web API
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Callback makes API request to Magento
Messenger Callback.php
API
Web API Request
Magento POSTs response to Facebook
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Web API Service Interface
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Magento API Interfaces
• https://github.com/vrann/magebot
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Map Service to the Web API endpoint
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What can go wrong?
When customer writes in Messenger:• Blocking request from
callback to Magento• Scalability: Magento can be
overloaded processing other requests
• Availability: Magento API is unreachable at that moment
Messages from customer are lost!
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API IN Using RabbitMQ
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• Scripts: https://github.com/vrann/http-rabbitmq-writer
Callback puts messages to the Queue
Messenger
API
Callback.php
Magento POSTs response to Facebook
Rabbit MQ
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Magento: transform Web API to RabbitMQ
Map message handler to topic in communication.xml
Map consumer to queue in queue_consumer.xml
Run consumer(s):
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With Communication & Queue configs
We achieved: Non-Blocking request, response to Facebook sent immediately Scalability handled by Queue Availability handled by QueueCommunication vs Queue:• Communication Framework is an abstraction around
publisher/subscriber. It can be implemented:– with database and HTTP requests instead (webhooks)– in-memory (observers)
• Queue is a Transport layer for Communication– configuration of RabbitMQ adapter and topology
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OUT Using RabbitMQ
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• Scripts: https://github.com/vrann/http-rabbitmq-writer
Goal: Magento sends messages to Rabbit
Messenger
API
callback.php
response.php
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Before: sender interface with the HTTP request
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Now: Sender interface with RabbitMQ
Replace preference for MessageSenderInterface in di.xml, Add “Remote” suffix
Interface implementation will be auto-generated:
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Publisher & Topology
queue_publisher.xml maps generated topic to the exchange
queue_topology.xml configures exchange to queue bindings
Available from Magento 2.2, before it was in queue.xml
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Input Messages Handler
Input Classifier
Search catalog by author
Title, image url, description
For Input Classifier it is better to use
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Wrap Up
• We covered:– Reasons behind Magento Web API data structures– Reasons to use queues– Switch from Web API to the RabbitMQ – Code generation of API OUT for RabbitMQ– Communication framework vs Queue framework– Separation of publishers, consumers, topology in 2.2– Input Message Handling– Facebook bots!
• https://github.com/vrann/facebook-chatbot• https://github.com/vrann/http-rabbitmq-writer• https://github.com/vrann/magebot
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Q&A
Write me @vrann (twitter, github)