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@shopify/koa-shopify-graphql-proxy

Build Status License: MIT npm version

A wrapper around koa-better-http-proxy which allows easy proxying of graphql requests from an embedded shopify app.

Installation

$ yarn add @shopify/koa-shopify-graphql-proxy

Usage

The module exports a proxy middleware as it's default export. It expects that you have other middleware set up (such as koa-shopify-auth) to authenticate requests with Shopify, and have session data stored on ctx.session.

Basic

Attaching the middleware will proxy any requests sent to /graphql on your app to the current logged in shop found in session.

// server/index.js
import koa from 'koa';
import session from 'koa-session';
import createShopifyAuth from '@shopify/koa-shopify-auth';
import proxy, {ApiVersion} from '@shopify/koa-shopify-graphql-proxy';

const app = koa();

app.use(session());

app.use(
  createShopifyAuth({
    /* your config here */
  }),
);

app.use(proxy({version: ApiVersion.Unstable}));

This allows client side scripts to query a logged in merchant's shop without needing to know the users access token.

fetch('/graphql', {credentials: 'include', body: mySerializedGraphQL});

Custom path

If you have your own /graphql route and don't want to clobber it, you can use a library like (koa-mount)[https://github.com/koajs/mount] to namespace the middleware.

// server/index
import mount from 'koa-mount';

//....

app.use(mount('/shopify', proxy({version: ApiVersion.Unstable}));
// client/some-component.js
fetch('/shopify/graphql', {credentials: 'include', body: mySerializedGraphQL});

Private app

If you have a private shopify app, you can than skip over the auth step and use this library directly for setting up graphql proxy.

// server/index.js
import koa from 'koa';
import session from 'koa-session';
import proxy, {ApiVersion} from '@shopify/koa-shopify-graphql-proxy';

const app = koa();

app.use(session());

app.use(
  proxy({
    version: ApiVersion.Unstable,
    shop: '<my-shop-name>.myshopify.com',
    password: '<your-app-password>',
  }),
);
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