On Origin Response Hook

The onOriginResponse hook is called whenever the resolver process gets a response from a remote service. It can be enabled for all Operations, or for specific ones.

This hook is useful, e.g. when you'd like to rewrite a response before it gets passed back to the resolver engine. You could for example remove personally identifiable information from the response.

Similar to all other hooks, the customResolve hook is called with the following parameters:

• user: The user object when the user is authenticated
• clientRequest: The original client request object, including Headers
• log: The logger object
• internalClient: The internal client object
• response: The response object (only for postResolve hooks)
• input: The input object (only for Operation hooks)

With the internalClient, you're able to securely call into all defined Operations, e.g. to talk to a database or another service to enrich a response or manipulate the inputs of an Operation.

// wundergraph.server.ts
export default configureWunderGraphServer<HooksConfig, InternalClient>(() => ({
  hooks: {
    global: {
      httpTransport: {
        onOriginResponse: {
          enableForAllOperations: true,
          hook: async ({ response }) => {
            console.log('onOriginResponse', response.headers)
            return 'skip'
          },
        },
      },
    },
  },
}))