@graphql-hive/core/esm/client/supergraph.js

import { version } from '../version.js';
import { http } from './http-client.js';
import { createHash, joinUrl } from './utils.js';
export function createSupergraphSDLFetcher(options) {
    let cacheETag = null;
    let cached = null;
    const endpoint = options.endpoint.endsWith('/supergraph')
        ? options.endpoint
        : joinUrl(options.endpoint, 'supergraph');
    return function supergraphSDLFetcher() {
        const headers = {
            'X-Hive-CDN-Key': options.key,
            'User-Agent': `hive-client/${version}`,
        };
        if (cacheETag) {
            headers['If-None-Match'] = cacheETag;
        }
        return http
            .get(endpoint, {
            headers,
            isRequestOk: response => response.status === 304 || response.ok,
            retry: {
                retries: 10,
                maxTimeout: 200,
                minTimeout: 1,
            },
            logger: options.logger,
            fetchImplementation: options.fetchImplementation,
        })
            .then(async (response) => {
            var _a;
            if (response.ok) {
                const supergraphSdl = await response.text();
                const result = {
                    id: await createHash('SHA-256').update(supergraphSdl).digest('base64'),
                    supergraphSdl,
                };
                const etag = response.headers.get('etag');
                if (etag) {
                    cached = result;
                    cacheETag = etag;
                }
                return result;
            }
            if (response.status === 304 && cached !== null) {
                return cached;
            }
            throw new Error(`Failed to GET ${endpoint}, received: ${response.status} ${(_a = response.statusText) !== null && _a !== void 0 ? _a : 'Internal Server Error'}`);
        });
    };
}