URL-3 Spring Boot skeletons for the service

services/shortener-service/build.gradle

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+plugins {
+    id 'java'
+}
+
+group 'me.lenajenichen'
+version '0.0.1-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+springBoot {
+    mainClass = 'shortener.ShortenerServiceApplication'
+}
+
+dependencies {
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
+    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
+}
+
+test {
+    useJUnitPlatform()
+}

services/shortener-service/src/main/java/api/HealthController.java

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+package api;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/health")
+public class HealthController {
+
+    @GetMapping
+    public String health() {
+        return "OK";
+    }
+}

services/shortener-service/src/main/java/shortener/ShortenerServiceApplication.java

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+package shortener;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
+
+@SpringBootApplication
+@ComponentScan(basePackages = {"shortener", "api"})
+public class ShortenerServiceApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ShortenerServiceApplication.class, args);
+    }
+
+}

services/shortener-service/src/main/resources/application.yaml

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+spring:
+  application:
+    name: shortener-service
+
+server:
+  port: 8083