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@neo4j/graphql-amqp-subscriptions-engine

v2.0.0

Published

Subscriptions engine for `@neo4j/graphql`, supporting AMQP brokers such as RabbitMQ

Downloads

95

Readme

@neo4j/graphql-amqp-subscriptions-engine

Subscription plugin for @neo4j/graphql, currently supporting AMQP 0-9-1 brokers such as:

  • RabbitMQ
  • Apache Qpid
  • Apache ActiveMQ

Documentation

Installation

npm install @neo4j/graphql-amqp-subscriptions-engine

Usage

const { Neo4jGraphQLAMQPSubscriptionsEngine } = require("@neo4j/graphql-amqp-subscriptions-engine");

const plugin = new Neo4jGraphQLAMQPSubscriptionsEngine({
    connection: {
        hostname: "localhost",
        username: "guest",
        password: "guest",
    },
});

const neoSchema = new Neo4jGraphQL({
    typeDefs,
    driver,
    plugins: {
        subscriptions: plugin,
    },
});

To close the connection with RabbitMQ:

await plugin.close();

Options

The following options are available in the plugin.

  • connection: AMQP connection options or amqp url (e.g. amqp://localhost).
  • exchange: (optional) Queue exchange, defaults to neo4j.graphql.subscriptions.fx.
  • reconnectTimeout: (optional) Timeout (in ms) between reconnection attempts. If not set, the plugin will not reconnect. Note that if the first connection fails, it will not attempt to reconnect.
  • log: (optional) Enable AMQP logs, defaults to true.
  • amqpVersion: (optional) AMQP version to use, only 0-9-1 supported at the moment.

Running tests

  • yarn test to run unit tests
  • yarn test:e2e to run integration tests. These tests require a RabbitMQ instance running, and are not run by default
    • Use docker-compose up rabbitmq to spin up a RabbitMQ container for testing
    • Use docker-compose up qpid to spin up a Qpid container for testing