A very simple GraphQL API and GraphQL Client for contacts stored on a local postgres database.

• JDK version 11.0.11 or above
• Maven version 3.6.3 or above
• PostgreSQL server version 13.4 or above

1. Clone the repository on your machine

2. Start the PostgreSQL server on your local machine. If you are accessing the PostgreSQL server over a network, edit the property quarkus.datasource.reactive.url in the file application.properties and replace localhost with the server IP address.

3. Connect to your PostgreSQL server using a user like that has create DB and create user privileges, like postgres.

4. Run the script init.sql on the PostgreSQL server. This script will create a user quarkustest with password sqlquarkustest and a database quarkustest.

5. To run the GraphQL API, execute the run_graphql_api.sh script. It will launch the quarkus in dev mode at port 5005, and GraphQL API will be available at http://localhost:8080/graphql.

6. To test the GraphQL endpoints, load the file SimpleContactsGraphQL.postman_collection.json in Postman and execute the API calls.

7. To run the GraphQL Client, execute the run_graphql_client.sh script. It will launch the quarkus in dev mode at port 5006, and GraphQL API query results will be available at http://localhost:8081/dynamic.

8. To test the subscription of GraphQL client, visit the URL http://localhost:8081/dynamic/subscription, and try adding new contacts using Postman.