Spring Boot application integrating Apache Camel

application.properties

camel.servlet.mapping.context-path=/*
camel.springboot.auto-startup=true
camel.rest.inline-routes = true

build.gradle

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

plugins {
    id 'org.springframework.boot' version '3.0.2'
    id 'io.spring.dependency-management' version '1.1.0'
    id 'org.jetbrains.kotlin.jvm' version '1.7.22'
    id 'org.jetbrains.kotlin.plugin.spring' version '1.7.22'
}

group = 'nl.sourcelabs'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '17'

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.apache.camel.springboot:camel-spring-boot-bom:4.0.0-M1'
    implementation 'org.apache.camel.springboot:camel-spring-boot-starter:4.0.0-M1'
    implementation 'org.apache.camel.springboot:camel-servlet-starter:4.0.0-M1'
    implementation 'org.apache.camel.springboot:camel-jackson-starter:4.0.0-M1'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.jetbrains.kotlin:kotlin-reflect'
    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

tasks.withType(KotlinCompile) {
    kotlinOptions {
        freeCompilerArgs = ['-Xjsr305=strict']
        jvmTarget = '17'
    }
}

tasks.named('test') {
    useJUnitPlatform()
}

SpringBootCamelApplication.kt

package nl.sourcelabs.springbootcamel

import org.apache.camel.CamelContext
import org.apache.camel.builder.RouteBuilder
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.runApplication
import org.springframework.context.annotation.Bean

@SpringBootApplication
class SpringBootCamelApplication {

    @Bean
    fun routeBuilder(camelContext: CamelContext) = object : RouteBuilder(camelContext) {
        override fun configure() {
            rest("/products/{id}")
                .get()
                .produces("application/json")
                .to("direct:productById")
            from("direct:productById")
                .log("Product with id: \${header.id} requested!")
                .transform().simple("Product[id: \${header.id}]")
        }
    }
}

fun main(args: Array<String>) {
    runApplication<SpringBootCamelApplication>(*args)
}