location-services

The goal of this project is to use Docker Compose to wrap a Java application container and MySQL container. The Java application is a CRUD app built with Dropwizard using jdbi3 mapper to MySQL.

To run:

After cloning, build the jar file.

$ ./gradlew clean build

Using a custom task called copyApp, copy the jar and config.yml file to the directory with the Dockerfile.

$ ./gradlew copyApp

Move to the directory with the docker-compose.yml file.

$ cd docker/compose

Run Docker Compose.

$ docker-compose up

Confirm the running containers with $ docker ps

At this time, the database table does not exist. Open a separate terminal and bash into the running MySQL container.

$ docker exec -t -i location-services-mysql /bin/bash

root@2fbfb34dd83b:/#

Run MySQL client using the credentials from the docker-compose file:

root@2fbfb34dd83b:/# mysql -u <useranme> -p

Create tables and add necessary data.

mysql> use locations;
mysql> show tables;
Empty set (0.01 sec)

TODO: I'm working on the docker-entrypoint-initdb.d file for database table creation.

Visit resource path localhost:8080/api/v1/locations

Postman

Example POST request for creating data using postman.

Sample json content for @POST to http://localhost:8080/api/v1/locations/

{
    "id": null,
    "createdOn": "1414602645009",
    "modifiedOn": "1414602645009",
    "country": "US",
    "state": "COLORADO",
    "type": "Ups",
    "code": "232121122222",
    "name": "it's cold"
}

Running locally

In the config.yml file, make sure the JDBC url reflects the local MySQL datasource.

# the JDBC URL
url: jdbc:mysql://localhost:3306/locations?serverTimezone=UTC

Then, build the jar.

$ ./gradlew clean build

Run the application.

$ ./gradlew run

Visit the resource path localhost:8080/api/v1/locations after adding data via MySQL or by using Postman.

Creating initial images.

This is the process of creating the initial image without Compose.

Create the jar file.

$ ./gradlew clean build

Copy the jar and config.yml file to /location-services/docker/location-services with our custom task.

$ ./gradlew copyApp

Move to the directory with the Dockerfile and our recently copied jar and config.yml file.

$ cd location-services/docker/location-services

Build the image.

$ docker build -t location-services .

The docker create command creates a writeable container layer over the specified image and prepares it for running the specified command. The container ID is then printed to STDOUT. This is similar to docker run -d except the container is never started. You can then use the docker start <container_id> command to start the container at any point. This is useful when you want to set up a container configuration ahead of time so that it is ready to start when you need it. The initial status of the new container is created.

$ docker create --name=location-services-container -p 8080:8080 -p 8081:8081 location-services

List all containers running and stopped.

$ docker ps -a

Start the container.

$ docker start location-services-container

List all running containers.

$ docker ps

View logs

$ docker logs -f location-services-container

Allow you to tail logs

$ docker logs -ft <container-id>

Shut down

$ docker stop location-services-container

Remove the container

$ docker rm location-services-container

Remove the image

$ docker rmi <image-id>

Remove all images if necessary

$ docker rmi $(docker images -a)