• Built on kotlin and ktor
• Deployed on Heroku Google cloud

The server is built in a way that is independent from palindrome checking, instead palindrome checking is added via a mini dsl like so

fun Application.module() {
    //app logic here
    configureLogicFields { //add any function you would like to evaluate as logic field
        add(::palindrome)
    }
}

Then we query v1/messages/{id}/logicfields/palindrome we get the output of said function on the given message (in this case true or false).
Adding additional logic is as simple as referencing a function

fun Application.module() {
    //app logic here
    configureLogicFields { //add any function you would like to evaluate as logic field
        add(::palindrome)
        add(::messageSize)
    }
}
fun messageSize(message: Message): String {
    return message.text.length.toString()
}

Now v1/messages/{id}/logicfields/messagesize will give us the length of the message's text content

After cloning, use gradle run to run the project locally
By default the project will use an embedded database when launched, so you don't need to have anything else setup. If you do have a database, please define environment variables db=true and JDBC_DATABASE_URL={your database url}
example environment

    db=true;JDBC_DATABASE_URL=jdbc:postgresql:messages?user=postgres&password=palindrome

The tests are all under gradle test
When committing, the tests will also run on the cloud and if they pass the code will be deployed on heroku

You can visit and query the API at palindrome-rest-api.herokuapp.com

You can download the client from https://github.com/PandaBoy444/palindromeClient/releases, it is recommended to use a terminal that supports colors like the Windows Terminal

Targeting jvm 1.8