Assuming you have the Golang application running either locally or in Kubernetes (we'll cover Kubernetes deployment in the next steps), you can test the endpoints using curl.
a. Health Endpoint:
curl http://localhost:8080/health
b. Insert or Update City Endpoint:
curl -X POST -H "Content-Type: application/json" -d '{"city":"Jakarta","population": 8808000}' http://localhost:8080/city
c. Retrieve Population of a City Endpoint:
curl http://localhost:8080/city/Jakarta
Assuming you have Golang installed on your system and you are in the root directory of the Golang application:
a. Build the Docker image:
docker build -t your-dockerhub-username/city-population-app:latest .
b. Push the Docker image to DockerHub (optional, if you want to deploy it to Kubernetes from DockerHub):
docker push your-dockerhub-username/city-population-app:latest
Replace your-dockerhub-username with your actual DockerHub username.
Assuming you have Docker Desktop installed and running on your system:
a. Start Docker Desktop and ensure that Kubernetes is enabled.
b. Open the terminal and navigate to the root directory of your Golang application.
c. Build the Docker image (if not done previously):
docker build -t your-dockerhub-username/city-population-app:latest .
d. Deploy the application to Kubernetes using Helm (make sure you have the Helm chart ready):
helm install city-population-app ./k8s/charts/city-population-app
e. Check the status of the deployment:
kubectl get pods
You should see the pods running. Make sure both the Golang application and Elasticsearch pods are in a "Running" state.
f. Expose the service to access the Golang application:
kubectl port-forward svc/city-population-app-service 8080:8080
The Golang application is now accessible at localhost:8080.
g. Test the Golang application using curl as described in the first step of testing.
h. When you are done testing, delete the Helm deployment:
helm delete city-population-app