spring-boot-graphql

Sample application for the Java Magazin 5.19 article

Features

1. CRUD over GraphQL API
2. Test your GraphQL API
3. Create GraphQL Error over Exception Handling
4. Subscribe on Events over your GraphQL API
5. DTOs Model Mapping over Orika
6. Secure your GraphQL API over Basic Authentication
7. Secure your GraphQL API over OAuth2/JWT
8. Performance Tuning over Batch Loading & Caching
9. GraphQL Context

GrapQL Queries

All supported GraphQL Queries are stored under src/test/resources

First Run

git clone https://github.com/Thinkenterprise/spring-boot-graphql.git

mvn clean install

mvn spring-boot:run

curl -X POST 'http://localhost:4000/graphql' -H 'Content-Type: application/json' -d '{"query":"{routes{id}}"}'

It is easier to test the application via Playground or Postman.

Enable Basic Authentication Feature

To test the security Basic Authentication feature you have to set profile basicSecurity there and delete the profile noSecurity.

curl -u user:password -X POST 'http://localhost:4000/graphql' -H 'Content-Type: application/json' -d '{"query":"{routes{id}}"}'

Enable OAuth2/JWT Feature

To test the security OAuth2/JWT feature you have to set profile OAuth2Security there and delete the profile noSecurity.

curl -X POST 'http://localhost:4000/graphql' -H 'Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzY29wZSI6WyJyZWFkIl0sImV4cCI6MjE0NDA4NjQ0MCwiYXV0aG9yaXRpZXMiOlsiUk9MRV9VU0VSIl0sInVzZXJfbmFtZSI6InRvbSIsImp0aSI6ImM4N2Q5NTNjLTZlZDAtNGRlMy1hZTJlLTMwZTcwOTYyNjExNyIsImNsaWVudF9pZCI6ImZvbyJ9.vOx3WIajVeaPelFuYttvSjvOSXw5POwzQiZPxQmH6eSQTVR_YCHHzd0vh2a00g3spZ0-S7fZfkiFuNF-QJogGS-GER-B8p4c6mMrazN0x-wytMVM6xZrQbner0Uqu_uuK1vQs-gm2-2BFpydQtq-ZYicss21RSJTLK7fuH5DzHQ' -H 'Content-Type: application/json' -d '{"query":"{routes{id}}"}'

Enable Performance Feature

The profile context activates the context that provides the data loaders in the resolvers. You can add the profile to the current profile setting.

Enable the Data Loader in Class RouteQueryResolver

public CompletableFuture<List<Flight>> flights(Route route, DataFetchingEnvironment dataFetchingEnvironment) {  
   DataLoader<Long,Flight> dataLoader = dataFetchingEnvironment.getDataLoader("flight");
    return dataLoader.loadMany(KeyUtils.getKeys(route.getId()));
}

and disbale the existing field resolver

public List<Flight> flights(Route route) {
    	return route.getFlights();
}

Enable the Mapper Feature

The mapping is switched on via the profile mapping. You can add the profile to the current profile setting. Attention with this profile we read another GraphQL schema and only queries are available.