wundergraph.config.ts Reference

Configure Apollo Federation Data Source

With the Apollo Federation data source, you can introspect multiple SubGraphs, and WunderGraph will automatically combine them into a SuperGraph, applies namespacing and will add the resulting GraphQL Schema to your virtual Graph.

WunderGraph supports Apollo Federation with Subscriptions out of the box. No changes are required to your code.

Example Configuration

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const federatedApi = introspect.federation({
apiNamespace: 'federated',
upstreams: [
{
url: 'http://localhost:4001/graphql',
},
{
url: 'http://localhost:4002/graphql',
},
{
url: 'http://localhost:4003/graphql',
},
{
url: 'http://localhost:4004/graphql',
},
],
})
configureWunderGraphApplication({
apis: [federatedApi],
})

Simply add all the URLs of your SubGraphs to the upstreams array. Aside from the url, you can also define a headers configuration, you can configure mTLS, or set a different URL for subscriptions by setting subscriptionsURL.

Introspecting protected graphql apis

Refer to the configure introspection for protected API guide.

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