The following is a list of requirements:

• maven 3
• java 1.8
• postgres 10

This is a simple spring-boot app. The application connects to postgres database (connection defined in application.yml) and connects to node-app.

GET /java/api/v1/status

Returns a status of an application as following JSON:

{
 "status": "UP",
 "postgresVersion": "PostgreSQL 10.4 (Debian 10.4-1.pgdg90+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, 64-bit" 
}

Note: postgresVersion can differ based on your postgres database.

GET /java/api/v1/node

Calls a node application defined in application.yml file as app.node.url and returns a result from that call as a following JSON:

{
 "data": "Hello world from node app" 
}

To build run:

mvn clean package

This will create a jar in target dir ie. target/spring-boot-app-1.0-SNAPSHOT.jar.

To run this jar, use:

java -jar target/spring-boot-app-1.0-SNAPSHOT.jar

The app will listen on port 8080.

In order to start application with custom config file pass --spring.config.location argument to java command, for example:

java -jar target/spring-boot-app-1.0-SNAPSHOT.jar --spring.config.location=my-conf.yml

Use spring-boot-app/src/main/resources/application.yml as reference to see which properties are available.