Getting started with BigQuery
Run Hasura GraphQL engine
Using Hasura Cloud
Navigate to cloud.hasura.io, and create a new Hasura Cloud account.
Once you create a project on Hasura Cloud, hit the "Launch Console" button to open the Hasura Console for your project.
Get the Hasura docker-compose file:
# in a new directory run
# or run
curl https://raw.githubusercontent.com/hasura/graphql-engine/stable/install-manifests/docker-compose/docker-compose.yaml -o docker-compose.yaml
The following command will run Hasura along with a Postgres database required for its functioning.
$ docker-compose up -d
Check if the containers are running:
$ docker ps
CONTAINER ID IMAGE ... CREATED STATUS PORTS ...
097f58433a2b hasura/graphql-engine ... 1m ago Up 1m 8080->8080/tcp ...
b0b1aac0508d postgres ... 1m ago Up 1m 5432/tcp ...
Please do note that you will see a Postgres database running, which is used by Hasura to store its configuration (Hasura metadata).
http://localhost:8080/console to open the Hasura console.
Connecting to a BigQuery project
Hasura GraphQL engine requires the following to connect to a BigQuery project:
- Project Id
- The datasets that can be exposed over graphql have to be explicitly listed.
- A Service Account to query the project.
Creating a Service Account
In Google Cloud's console, head to your BigQuery project.
IAM & Admin > Service Accounts > Create Service Account
Give it a name, and under roles, and grant these 3 roles:
BigQuery Metadata Viewer,
BigQuery Data Viewerand
BigQuery Job User.
Click on the created service account,
Keys > ADD KEY > Create New Key > JSON > Create. This will download a service account file on your computer.
Connect BigQuery to Hasura
- Update Graphql engine with an environment variable set to the contents of the service account.
For example, this maybe done as follows if you are using docker:
docker run -e BIGQUERY_SA_ACCOUNT=$(cat /path/to/the/service-account.json) <rest-of-the-flags>
Head to the console, in the
Connect Existing Databasepage, choose
Connect Via, and fill in the necessary details:
You should now be able to track the tables that are part of the specified tables and configure relationships between them. As BigQuery lacks foreign key constraints, the console cannot suggest relationships, so all relationships between BigQuery tables have to be manually configured.
Try out a GraphQL query
Head to the
API tab in the console and try running a GraphQL query! Use the explorer sidebar on GraphQL to get help in
creating a GraphQL query.
Keep up to date
Hasura currently supports queries on BigQuery.
Please watch this space to get the latest docs on how you can try these features out via the console or by manipulating metadata in JSON/YAML directly.
If you'd like to stay informed about the status of BigQuery support, subscribe to our newsletter and join our discord!