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apollo-persisted-graphql

v0.1.0

Published

A build tool for generating persisted queries and use the queries in both client and server

Downloads

3

Readme

Apollo Persisted GraphQL

apollo-persisted-graphql is a build tool that generates static persisted queries for GraphQL that can be used in both client and server side.

It reads GraphQL queries from source directory and extracts query documents from .graphql files. Make sure each file MUST contains only one query document. This tool generates hash ID for each query and merge all the hash-query map to a JSON file. This JSON file can be used as whitelisting map for both client and server side.

Installation

npm install --save apollo-persisted-graphql

Setup and Usage

There's three steps to complete the setup.

  1. Generate persisted queries
  2. Client side setup
  3. Server side setup

Generate persisted queries

The tool has a binary file called apollo-persisted-graphql. Run the binary as follows. Make sure each file must contain only one query document

apollo-persisted-graphql -s <source_directory> -d <destination_file>

This command will generate a JSON file which can be used in both client and server end.

Client side setup

This package wraps apollo-link-persisted-queries in the client side and replace the hash with the generated hashId.

import { createPersistedQueries } from "apollo-persisted-graphql";
import { createHttpLink } from "apollo-link-http";
import { InMemoryCache } from "apollo-cache-inmemory";
import ApolloClient from "apollo-client";
const queryMap = require("./your_query_map.json");

const link = createPersistedQueries(queryMap)
  .concat(createHttpLink({ uri: "/graphql" }));

const client = new ApolloClient({
  cache: new InMemoryCache(),
  link: link,
});

Server side setup

This package works as a middleware for apollo-server-express server.

import * as express from "express";
import { ApolloServer } from "apollo-server-express";
import { mapRequestPersistedQueries } from "apollo-persisted-graphql";
const queryMap = require("./your_query_map.json");

const app = express();
app.use(mapRequestPersistedQueries(queryMap));

const server = new ApolloServer();
server.applyMiddleware({ app });

app.listen({port, host }, () =>
console.log(`🚀 Server ready at ${host}:${port}${server.graphqlPath}`));