@hydre/graphql-lambda-ws
v2.3.7
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@hydre/graphql-lambda-ws 🌐🚀
Welcome to GraphQL Serverless WebSocket library, a simple and powerful solution for implementing GraphQL subscriptions over WebSocket on Serverless architectures. 🛰️🌟
Features ✨
- AWS Integration: Built-in integration with AWS API Gateway Management API for easy deployment on AWS Lambda.
- Flexible Error Handling: Customize how errors are formatted and returned to the client.
- Built-In Validation: Automatically validates incoming GraphQL requests against your schema.
Installation 📦
Use the package manager npm to install GraphQL Serverless WebSocket Library.
npm install @hydre/graphql-lambda-ws
Server Usage 🚀
This library exposes a single function that returns a new server instance. This function takes an options object with the following properties:
The returned server instance is a function that you can use as your AWS Lambda handler.
Here is a simple usage example:
import serve from '@hydre/graphql-lambda-ws'
import make_schema from '@hydre/make_schema'
export const connect = (_, __, cb) => cb(null, { statusCode: 200, body: '🇺🇦' })
// this returns a function (event, context) => {}
export default serve({
// the build schema
schema: make_schema({ ... }),
// An async function that builds the context for each request.
// `set_headers` can be called to assign headers to the response
build_context: async ({ event, context, set_headers }) => ({}),
// The root value for your resolvers
root_value: {},
// Options for the AWS API Gateway Management API client. @see https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-apigatewaymanagementapi/
aws_client_options: { endpoint: 'http://localhost:3001' },
// A function that formats errors before they're returned to the client.
format_error: error => error,
// log every lambda responses
log_response: false
})
You may use it along Serverless like this
service: my-service
frameworkVersion: '3'
useDotenv: true
provider:
name: aws
runtime: nodejs18.x
functions:
connect:
handler: src/index.connect
events:
- websocket:
route: $connect
default:
handler: src/index.default
events:
- websocket:
route: $default
plugins:
- serverless-dotenv-plugin
- serverless-offline
Now run
sls offline
Client usage 🍎
Try it in your terminal with wscat
wscat -c ws://localhost:3001
> {"query":"subscription { test }"}
Find a vuejs example under /example/index.js
Contributing 🤝
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to test your changes