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apollo-server

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apollo-server

Production ready GraphQL Server

  • 3.13.0
  • latest
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
201K
increased by7.21%
Maintainers
1
Weekly downloads
ย 
Created

What is apollo-server?

Apollo Server is a community-driven, open-source GraphQL server that works with any GraphQL schema. It is designed to be a self-contained GraphQL server that can be used with any Node.js HTTP server framework, such as Express, Koa, or Hapi.

What are apollo-server's main functionalities?

Creating a Basic GraphQL Server

This code sets up a basic Apollo Server with a single query type 'hello' that returns a string 'Hello world!'.

const { ApolloServer, gql } = require('apollo-server');

const typeDefs = gql`
  type Query {
    hello: String
  }
`;

const resolvers = {
  Query: {
    hello: () => 'Hello world!',
  },
};

const server = new ApolloServer({ typeDefs, resolvers });

server.listen().then(({ url }) => {
  console.log(`๐Ÿš€  Server ready at ${url}`);
});

Integrating with Express

This code demonstrates how to integrate Apollo Server with an Express application.

const express = require('express');
const { ApolloServer, gql } = require('apollo-server-express');

const typeDefs = gql`
  type Query {
    hello: String
  }
`;

const resolvers = {
  Query: {
    hello: () => 'Hello world!',
  },
};

const server = new ApolloServer({ typeDefs, resolvers });

const app = express();
server.applyMiddleware({ app });

app.listen({ port: 4000 }, () =>
  console.log(`๐Ÿš€ Server ready at http://localhost:4000${server.graphqlPath}`)
);

Adding Middleware for Authentication

This code adds middleware to the Apollo Server for authentication by checking the authorization header and adding the user to the context.

const { ApolloServer, gql } = require('apollo-server');

const typeDefs = gql`
  type Query {
    hello: String
  }
`;

const resolvers = {
  Query: {
    hello: (parent, args, context) => {
      if (!context.user) throw new Error('Not authenticated');
      return 'Hello world!';
    },
  },
};

const getUser = (token) => {
  // Mock function to get user from token
  return token ? { id: 1, name: 'John Doe' } : null;
};

const server = new ApolloServer({
  typeDefs,
  resolvers,
  context: ({ req }) => {
    const token = req.headers.authorization || '';
    const user = getUser(token);
    return { user };
  },
});

server.listen().then(({ url }) => {
  console.log(`๐Ÿš€  Server ready at ${url}`);
});

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Package last updated on 14 Nov 2023

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