Apollo Server timeout while waiting for stream data - node.js

Question

I'm attempting to wait for the result of a stream with my Apollo Server. My resolver looks like this.
async currentSubs() {
try {
const stream = gateway.subscription.search(search => {
search.status().is(braintree.Subscription.Status.Active);
});
const data = await stream.pipe(new CollectObjects()).collect();
return data;
} catch (e) {
console.log(e);
throw new Meteor.Error('issue', e.message);
}
},
This resolver works just fine when the data stream being returned is small, but when the data coming in is larger, I'm getting a 503 (Service Unavailable). I looks like the timeout is happening around 30 seconds. I've tried increasing the timeout of my Express server with graphQLServer.timeout = 240000; but that hasn't made a difference.
How can I troubleshoot this & where is the 30 second timeout coming from? It only fails when the results take longer.
I'm using https://github.com/mrdaniellewis/node-stream-collect to collect the results from the stream.
Error coming in from the try catch:
I20180128-13:09:26.872(-7)? { proxy:
I20180128-13:09:26.872(-7)? { error: 'Post http://127.0.0.1:26474/graphql: net/http: request canceled (Client.Timeout exceeded while awaiting headers)',
I20180128-13:09:26.872(-7)? level: 'error',
I20180128-13:09:26.873(-7)? msg: 'Error sending request to origin.',
I20180128-13:09:26.873(-7)? time: '2018-01-28T13:09:26-07:00',
I20180128-13:09:26.873(-7)? url: 'http://127.0.0.1:26474/graphql' } }

Answer 1

Had this same problem and was a pretty simple solution. My calls were lasting a bit over 30 seconds and the default timeout was returning 503s as well so I increased that.
Assuming you're using apollo-engine (this may be true for some other forms of Apollo), you can set your engine configs like so:
export function startApolloEngine() {
const engine = new Engine({
engineConfig: {
stores: [
{
name: "publicResponseCache",
memcache: {
url: [environmentSettings.memcache.server],
keyPrefix: environmentSettings.memcache.keyPrefix
}
}
],
queryCache: {
publicFullQueryStore: "publicResponseCache"
},
reporting: {
disabled: true
}
},
// GraphQL port
graphqlPort: 9001,
origin: {
requestTimeout: "50s"
},
// GraphQL endpoint suffix - '/graphql' by default
endpoint: "/my_api_graphql",
// Debug configuration that logs traffic between Proxy and GraphQL server
dumpTraffic: true
});
engine.start();
app.use(engine.expressMiddleware());
}
Notice the part where I specify
origin: {
requestTimeout: "50s"
}
That alone is what fixed it for me. Hope this helps!
You can find more information about that here