mailer-micro-service

Mailer Micro Service

Micro service that stores customers and send them emails based on mailing ID.

Requirements

• docker
• kubectl
• minikube

Run the project

Start the Kubernetes cluster:

minikube start

Use minikube docker environment:

eval $(minikube docker-env)

Build the app image:

docker build -t mailer-micro-service-app:latest .

Start the application:

kubectl apply -f kubernetes/.

Start the proxy on 127.0.0.1:8080(*)

kubectl port-forward service/app 8080:8080

To connect manually to the database, open connection on localhost:5432 (*)

kubectl port-forward service/postgres 5432:5432

*) Please be sure that the node is in Running state. You can check it with the kubectl get pods command.

Test the project

To see what's going on, tail logs from the app container (kubectl get pods to get app-node-id) :

kubectl logs -f {app-node-id}

Create mailing records:

curl -X POST localhost:8080/api/messages -d '{"email":"john.doe@example.com","title":"Gummi bears","content":"Wafer tart cupcake carrot cake icing","mailing_id":1, "insert_time": "2020-04-24T05:42:38.725412916Z"}'

curl -X POST localhost:8080/api/messages -d '{"email":"john.doe@example.com","title":"Chocolate","content":"Sugar plum gingerbread biscuit gummies cotton candy","mailing_id":2, "insert_time": "2020-04-24T05:42:38.725412916Z"}'

curl -X POST localhost:8080/api/messages -d '{"email":"john.doe@example.com","title":"Marshmallow","content":"Jelly beans candy topping jelly beans sugar plum","mailing_id":3, "insert_time": "2020-04-24T05:42:38.725412916Z"}'

Send a mocked message to everyone with given mailing ID:

 curl -X POST localhost:8080/api/messages/send -d '{"mailing_id":1}'

Delete a given mailing:

curl -X DELETE localhost:8080/api/messages/{id}

Shutdown the project

Stop the application:

kubectl delete -f kubernetes/.

Stop the cluster:

minikube stop

Makefile

To simplify the commands management, there's a Makefile file that contains all the commands aliased to a shorter form.