83 lines
2.7 KiB
JavaScript
83 lines
2.7 KiB
JavaScript
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import syncFetch from 'sync-fetch';
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import { parseGraphQLSDL } from '@graphql-tools/utils';
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import { fetch } from '@whatwg-node/fetch';
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const DEFAULT_APOLLO_ENDPOINT = 'https://engine-graphql.apollographql.com/api/graphql';
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/**
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* This loader loads a schema from Apollo Engine
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*/
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export class ApolloEngineLoader {
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getFetchArgs(options) {
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return [
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options.engine.endpoint || DEFAULT_APOLLO_ENDPOINT,
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{
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method: 'POST',
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headers: {
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'x-api-key': options.engine.apiKey,
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'apollo-client-name': 'Apollo Language Server',
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'apollo-client-reference-id': '146d29c0-912c-46d3-b686-920e52586be6',
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'apollo-client-version': '2.6.8',
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'Content-Type': 'application/json',
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Accept: 'application/json',
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...options.headers,
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},
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body: JSON.stringify({
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query: SCHEMA_QUERY,
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variables: {
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id: options.graph,
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tag: options.variant,
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},
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}),
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},
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];
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}
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async canLoad(ptr) {
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return this.canLoadSync(ptr);
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}
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canLoadSync(ptr) {
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return typeof ptr === 'string' && ptr === 'apollo-engine';
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}
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async load(pointer, options) {
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if (!(await this.canLoad(pointer))) {
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return [];
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}
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const fetchArgs = this.getFetchArgs(options);
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const response = await fetch(...fetchArgs);
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const { data, errors } = await response.json();
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if (errors) {
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throw new AggregateError(errors, 'Introspection from Apollo Engine failed; \n ' +
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errors.map((e) => e.message).join('\n'));
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}
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const source = parseGraphQLSDL(pointer, data.service.schema.document, options);
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return [source];
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}
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loadSync(pointer, options) {
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if (!this.canLoadSync(pointer)) {
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return [];
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}
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const fetchArgs = this.getFetchArgs(options);
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const response = syncFetch(...fetchArgs);
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const { data, errors } = response.json();
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if (errors) {
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throw new AggregateError(errors, 'Introspection from Apollo Engine failed; \n ' +
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errors.map((e) => e.message).join('\n'));
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}
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const source = parseGraphQLSDL(pointer, data.service.schema.document, options);
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return [source];
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}
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}
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/**
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* @internal
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*/
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export const SCHEMA_QUERY = /* GraphQL */ `
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query GetSchemaByTag($tag: String!, $id: ID!) {
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service(id: $id) {
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... on Service {
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__typename
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schema(tag: $tag) {
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document
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}
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}
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}
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}
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`;
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