graphql-request-appsync-iam

Extension of graphql-request that can be used to make calls to an AppSync API using IAM authorization.

Rationale

AWS AppSync provides the ability to authenticate GraphQl requests using IAM credentials. However, to do so you need to calculate a special signature and include it in the request headers. This library provides a function to give you a graphql-request client that will calculate and include the proper signature at request time.

Installation

npm install graphql-request-appsync-iam

Usage

import { getGraphQLClient } from 'graphql-request-appsync-iam';

const url =
    'https://wvMQY3gdydNyvEJaJisxLymPbb.appsync-api.us-east-1.amazonaws.com/graphql';

// client is an instance of graphql-request's GraphQLClient
const client = getGraphQLClient(url);

const query = `
    query getMovie {
        Movie(title: "Inception") {
            releaseDate
            actors {
                name
            }
        }
    }
`;
const data = await graphQLClient.request(query);

Configuration

By default, the library uses the credentials and region specified in the global AWS.config object. You can override these settings via the awsCredentials and awsRegion options. You can also pass in any other options to GraphQLClient's constructor, except for fetch. Putting that all together:

import { getGraphQLClient } from 'graphql-request-appsync-iam';

const url =
    'https://wvMQY3gdydNyvEJaJisxLymPbb.appsync-api.us-east-1.amazonaws.com/graphql';
const client = getGraphQLClient(url, {
    awsCredentials: {
        accessKeyId: 'asdfasdfd',
        secretAccessKey: 'asdfasdfd',
        sessionToken: 'asdfasdf',
    },
    awsRegion: 'us-east-1',
    timeout: 60,
});

Testing

See HowTo: Live test of getGraphQLClient().