A starter kit for Hasura + Java Spring boot for building a GraphQL API with remote/logical fields powered by business logic in Java.

• Run a docker build command: docker build -t .
• Run with docker: docker-compose up -d

• Build the docker image and run it
• Open the Hasura console at http://localhost:8080
• Create the sample database
  • docker run -ti postgres < psql < ./demo/data.sql
• Import the sample metadata Hasura Console > Data > Run SQL
  • Hasura Console > Setings > Import metadata > ./demo/metadata.json
• Try the following GraphQL query:

query {
  user {
    id
    email
    age
  }
}

• Here, you'll see that the user model is the base model and age is a computed field and the logic is powered by code in Java

1. Set up or use an existing database as a data source
2. Track a data model via the Hasura metadata in the metadata directory
3. Add a resolver that represents a new field to the Java spring boot app (howto)
4. Build the docker image and run it howto

• The docker image build process will automatically build the Java API
• Tip: Run docker-compose in watch mode if you don't want to rebuild the docker image every time as you're developing!

5. Now use either the CLI or the console to:

• Add the java spring boot GraphQL API as a remote schema - http://localhost:3000
• Add the remote field to the data model as a remote relationship howto
• If you're using the CLI, remember to run a hasura metadata apply after you modify the metadata
• If you're using the console remember to run a hasura metadata export after you modify the metadata via the console, so that your latest metadata is exported as code in your metadata directory

7. Test out the GraphQL API

1. For deploying in production, once you're done with development, build the docker image and name/tag it appropriately
2. Use the built docker image when running Hasura instead of using hasura/graphql-engine directly
3. Make sure you have your metadata database and your source database already running and set up
4. Once you have the container running, apply your metadata using:

• hasura metadata apply