Apollo Federation is an architecture for composing multiple GraphQL services into a single graph that addresses this need. Unlike other approaches such as schema stitching, it is based on a declarative composition programming model that allows proper separation of concerns. This design allows teams to implement an enterprise-scale shared data graph as a set of loosely coupled, separately maintained GraphQL services.
Questions tagged [apollo-federation]
208 questions
1
vote
1 answer
How to set environment variables in PowerShell to fetch a registered schema from Apollo Studio
I'm following Apollo Router Quickstart documentation.
I am stuck on fetching the registered schema from Apollo Studio by setting environment variables. I'm using PowerShell and since this command is for Linux it doesn't work for windows.
$…
JeremyBearimy
- 52
- 5
1
vote
0 answers
using custom directive in apollo federation v2 gateway
Using Apollo Federation V2.
In my gateway, creating context as follows;
context: ({ req }) => {
if (req.user) {
const user = req.user;
return { user };
} else {
console.error(
…
killjoy
- 864
- 17
- 31
1
vote
1 answer
Apollo Gateway: Forward Subgraph `set-cookie` Header to Gateway to Client
I have a subgraph microservice that handles sessions. We store our sessions via cookies that the subgraph creates, and should set it via the set-cookie header. Only issue is my gateway does not seem to be forwarding the set-cookie header from the…
NateAGeek
- 624
- 1
- 8
- 22
1
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1 answer
Apollo Federation: A valid schema couldn't be composed. The following composition errors were found: Syntax Error: Unexpected character: U+0130
I tried to use Apollo Federation and I create an user service and gateway. User service is working alone fine but Gateway is giving an error:
Error: A valid schema couldn't be composed. The following composition errors were found:
Syntax…
Ertan Özdemir
- 67
- 6
1
vote
0 answers
How to resolve chained graphql resolvers in an array
In a child resolver in GraphQL, I want to use an API to get the data.
Example schema and resolver:
import { gql,ApolloServer } from "apollo-server";
const typeDefs = gql`
type Review{
id: String!
rating: String!
comments: [String]
…
Mohit Narayan Tandon
- 61
- 2
1
vote
2 answers
Forward request headers - apollo federated gateway
I'm using the following versions:
"@apollo/gateway": "^2.1.3"
"@apollo/server": "^4.0.0"
"graphql": "^16.6.0"
I can't get a handle on the req object to extract the headers and forward them. The buildService code works to add headers to requests to…
Dudo
- 4,002
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- 57
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0 answers
Can entities in a federated Apollo GraphQL schema have fields that are resolved separately from __resolveReference?
With a federated GraphQL model using Apollo, the docs state that "A reference resolver is responsible for returning all of the entity fields that this subgraph defines". But is it possible to have fields in a subgraph not returned from the…
nerdlinger
- 1,610
- 2
- 17
- 24
1
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1 answer
How to handle child objects extension in Apollo Federation
Service A:
type A {
id: ID!
embeddedMetaData: MetaData
}
type MetaData{
fieldA: String
}
Service B:
type A @key(fields: "id") {
id: ID! @external
#I want to extend and resolve a new field into MetaData type without overriding
}
How can…
Huszar Gellert
- 23
- 4
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vote
0 answers
Graphql federation - Communication between subgraphs for validation
I am trying to implement Graphql federation with multiple subgraphs using Nestjs + Apollo GraphQL.
So I have USER subgraph and Application subgraph as separate Graphql services. Everything seems to be working fine when its comes to querying from the…
Midhun Murali
- 2,089
- 6
- 28
- 49
1
vote
1 answer
Apollo Federation - Subgraph healfth check in gateway
I'm implementing it as a POC in my company, Apollo Federation.
And I'm not finding in the documentation how to do the health check of the subgraph so that there is no error when uploading the gateway.
Is there any way to do it?
my example:…
Gabriel Duarte
- 11
- 1
1
vote
0 answers
Apollo Federation 2 displaying query plan in apollo studio while using it as embedded
Using federation 2. I'd like to use Apollo Explorer as a landing page by setting;
ApolloServerPluginLandingPageLocalDefault({ embed: true }). Works nicely.
However, couldn't get query plan;
Any chance to get the query plan in Apollo Explorer while…
killjoy
- 864
- 17
- 31
1
vote
0 answers
Endless Loop in apollo federation API gateway context
Trying to add authentication to my appolo projects. I have the following structure
Class AuthenticatedDataSource extends RemoteGraphQLDataSource {
willSendRequest({request, context }) {
request.http.headers.set('required-auth',…
Danis
- 1,978
- 3
- 16
- 27
1
vote
0 answers
ApolloGateway: How to make a gql call after receiving a response
I have a simple ApolloGateway server, which receives a gql mutation. What I am trying to accomplish is to make another gql mutation upon receiving a success call from the mutation call.
I can see that I can use the method didReceiveResponse in order…
Seeker
- 75
- 1
- 5
1
vote
0 answers
Apollo federation entity union / extending entities in same subgraph
I am currently sucessfully being able to extend types across services.
Service A:
type User @key(fields: "id") {
id: ID!
}
Service B:
extend type User @key(fields: "id") {
id: ID! @external
extendedList: [ExtendedType]
}
And then ofcource…
Joelgullander
- 1,624
- 2
- 20
- 46
1
vote
1 answer
Federated graphql context with gqlgen
How do you get the graphql context in a gqlgen subgraph that has been passed down from the federated graphql gateway?
hboylan
- 357
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- 12