This package implements the PubSubEngine Interface from the graphql-subscriptions package. It allows you to connect your subscriptions manager to a AMQP PubSub mechanism.
This package is influenced by graphql-redis-subscriptions and graphql-rabbitmq-subscriptions.
import { AMQPPubSub } from 'graphql-subscriptions-amqp';
import amqp from 'amqplib';
amqp.connect('amqp://guest:guest@localhost:5672?heartbeat=30')
.then(conn => {
const pubsub = new AMQPPubSub({
connection: conn
/* exchange: 'graphql_subscriptions' */
});
// Use the pubsub instance from here on
})
.catch(err => {
console.error(err);
});
- Reusing existing amqplib Connection
- Reusing channels (one for subscriptions, one for publishing)
- Performance/Ressource-usage benefits on AMQP (RabbitMQ) because of the aforementioned reasons more info
- Using Topic Exchange (e.g. you publish to
agreements.eu.berlin.headstore
and subscribe toagreements.eu.#
) more info
This package uses Debug. To show the logs run your app with the environment variable DEBUG="AMQPPubSub"