Simple REST server (Spring Boot, Groovy)

rest-server.groovy

@Grab(group='org.springframework.boot', module='spring-boot-starter-web', version='1.1.7.RELEASE')
@Grab(group='org.springframework.boot', module='spring-boot-starter-actuator', version='1.1.7.RELEASE')

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
GET     /todos/    Reads all tasks.
POST    /todos/    Creates a new task.
GET     /todo/:id  Reads a task.
PUT     /todo/:id  Updates a task.
DELETE  /todo/:id  Destroys a task.
**/
@Controller
@RequestMapping(value="/api/todos")
@EnableAutoConfiguration
public class TodosController  {
    private static final Logger logger = LoggerFactory.getLogger(TodosController.class)

    private dataTable = [[
      "id": 1,
      "title": "Learn Groovy",
      "completed": false
    ],
    [
      "id": 2,
      "title": "Learn ES6",
      "completed": false
    ]]

    @RequestMapping(value="/", method=RequestMethod.GET)
    @ResponseBody
    Map getAllTasks() {
        logger.info("Get all todos")
        return [
            "total": dataTable.size(),
            "page": 1,
            "perPage": 10,
            "todos": dataTable]
    }

    @RequestMapping(value="/", method=RequestMethod.POST)
    @ResponseBody
    Integer addTask(@RequestBody Map todo) {
        logger.info("Add new todo: ${todo}")
        todo.id = dataTable.size() + 1
        dataTable.push(todo)
        return todo.id
    }

    @RequestMapping(value="/{todoId}", method=RequestMethod.GET)
    @ResponseBody
    Map getTask(@PathVariable("todoId")Integer todoId) {
        logger.info("Get todo: ${todoId}")
        return dataTable.get(todoId - 1)
    }

    @RequestMapping(value="/{todoId}", method=RequestMethod.PUT)
    @ResponseBody
    Map updateTask(@PathVariable("todoId")Integer todoId, @RequestBody Map todo) {
        logger.info("Update todo: ${todoId} with: ${todo}")
        if (dataTable.get(todoId - 1)) {
            todo.id = todoId
            dataTable.set(todoId - 1, todo)
        }
        return todo
    }

    @RequestMapping(value="/{todoId}", method=RequestMethod.DELETE)
    @ResponseBody
    Map removeTask(@PathVariable("todoId")Integer todoId) {
        println("Delete todo: ${todoId}")
        if (dataTable.get(todoId - 1)) {
            return dataTable.remove(todoId - 1)
        }
        return false
    }


    public static void main(String[] args) throws Exception {
        SpringApplication.run(TodosController.class, args);
    }
}