Federation JVM Spring Example

Apollo Federation JVM example implementation using Spring GraphQL. If you want to discuss the project or just say hi, stop by the Apollo community forums.

The repository contains three separate projects:

1. products-subgraph: A Java GraphQL service providing the federated Product type
2. reviews-subgraph: A Java GraphQL service that extends the Product type with reviews
3. gateway: An instance of Apollo Server acting as the Federated Gateway

See individual projects READMEs for detailed instructions on how to run them.

Running the demo

1. Start products-subgraph by running the Spring Boot app from the IDE or by running ./gradlew bootRun from products-subgraph project
2. Start reviews-subgraph by running the Spring Boot app from the IDE or ./gradlew bootRun from reviews-subgraph project
3. Start Federated Gateway
   1. Install required packages by running npm install in the gateway project
   2. Start gateway by running npm run start in the gateway project
4. Open http://localhost:4000 for the query editor

Example federated query

query ExampleQuery {
    products {
        id
        name
        description
        reviews {
            id
            text
            starRating
        }
    }
}

Other Federation JVM examples

• Netflix DGS Federation Example
• GraphQL Java Kickstart Federation Example