Sample Node JS application with GraphQL

This is a sample GraphQL implementation over the NodeJS express server listening on port 4000.

The data for this server if feed by the hardcoded file in here. This data is used for only reading i.e., only by the query type.

Via mutation, whatever data is sent to the server; all of those are stored in the server session and returned to the query while upon reading.

Requirements

• node
• npm
• docker (for containerizing the app)
• docker registry account
• k8s minikube (for deploying the container into cluster)
• kubectl (to interact with the Kubernetes)

Install & Run in k8s

Follow the below steps to download and run the application in minikube.

Download the source code

git clone https://github.com/gkarthiks/nodeJS-GraphQL.git

Build the source code and run it locally for testing.

  cd nodeJS-GraphQL
  npm run-script build
  npm run-script run

The above steps will run the nodeJS application listening on port 4000. try hitting localhost:4000/graphql

Noe create a docker image by executing the below command.

docker build -t graphqlexample .

This will create a docker image with node:slim as base. Check whether the image is created or not by listing the docker images via below command.

docker image ls

Tag the docker image with the following command and push it to your docker hub.

docker tag graphqlexample <username>/graphqlexample
docker push <username>/graphqlexample

Find quick docker commands here.

Now that docker image is created, that can be tested with docker itself by runing it locally with the below command.

docker run -p 4000:4000 /graphqlexample

Once after successfull testing, it can be deployed in the minikube by creating the Deployment, Service and Route objects.