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import { InMemoryCache } from 'apollo-cache-inmemory';
import { ApolloClient } from 'apollo-client';
import { ApolloLink } from 'apollo-link';
import { BatchHttpLink } from 'apollo-link-batch-http';
import { createUploadLink } from 'apollo-upload-client';
import { StartupJSLink } from '~/lib/utils/apollo_startup_js_link';
import csrf from '~/lib/utils/csrf';
import PerformanceBarService from '~/performance_bar/services/performance_bar_service';
export const fetchPolicies = {
CACHE_FIRST: 'cache-first',
CACHE_AND_NETWORK: 'cache-and-network',
NETWORK_ONLY: 'network-only',
NO_CACHE: 'no-cache',
CACHE_ONLY: 'cache-only',
};
export default (resolvers = {}, config = {}) => {
let uri = `${gon.relative_url_root || ''}/api/graphql`;
if (config.baseUrl) {
// Prepend baseUrl and ensure that `///` are replaced with `/`
uri = `${config.baseUrl}${uri}`.replace(/\/{3,}/g, '/');
}
const httpOptions = {
uri,
headers: {
[csrf.headerKey]: csrf.token,
},
// fetch won’t send cookies in older browsers, unless you set the credentials init option.
// We set to `same-origin` which is default value in modern browsers.
// See https://github.com/whatwg/fetch/pull/585 for more information.
credentials: 'same-origin',
batchMax: config.batchMax || 10,
};
const requestCounterLink = new ApolloLink((operation, forward) => {
window.pendingApolloRequests = window.pendingApolloRequests || 0;
window.pendingApolloRequests += 1;
return forward(operation).map((response) => {
window.pendingApolloRequests -= 1;
return response;
});
});
const uploadsLink = ApolloLink.split(
(operation) => operation.getContext().hasUpload || operation.getContext().isSingleRequest,
createUploadLink(httpOptions),
new BatchHttpLink(httpOptions),
);
const performanceBarLink = new ApolloLink((operation, forward) => {
return forward(operation).map((response) => {
const httpResponse = operation.getContext().response;
if (PerformanceBarService.interceptor) {
PerformanceBarService.interceptor({
config: {
url: httpResponse.url,
},
headers: {
'x-request-id': httpResponse.headers.get('x-request-id'),
'x-gitlab-from-cache': httpResponse.headers.get('x-gitlab-from-cache'),
},
});
}
return response;
});
});
return new ApolloClient({
typeDefs: config.typeDefs,
link: ApolloLink.from([
requestCounterLink,
performanceBarLink,
new StartupJSLink(),
uploadsLink,
]),
cache: new InMemoryCache({
...config.cacheConfig,
freezeResults: config.assumeImmutableResults,
}),
resolvers,
assumeImmutableResults: config.assumeImmutableResults,
defaultOptions: {
query: {
fetchPolicy: config.fetchPolicy || fetchPolicies.CACHE_FIRST,
},
},
});
};
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