Add Zookeeper discovery client smoke test

See gh-104

ci/smoke-tests.yml

@@ -12,6 +12,7 @@ smoke_tests:
   - cache-redis
   - cache-simple
   - cache-simple-jdk-proxy
+  - cloud-discovery-zookeeper
   - cloud-function-web
   - cloud-function-webflux
   - cloud-stream-kafka

cloud-discovery-zookeeper/build.gradle

@@ -0,0 +1,30 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot'
+	id 'org.springframework.aot.smoke-test'
+	id 'org.graalvm.buildtools.native'
+}
+
+ext {
+	set('springCloudVersion', "2022.0.0-SNAPSHOT")
+}
+
+dependencies {
+	implementation(platform(
+			org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES))
+	implementation(
+			platform("org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"))
+	implementation("org.springframework.boot:spring-boot-starter")
+	implementation("org.springframework.boot:spring-boot-starter-webflux")
+	implementation("org.springframework.cloud:spring-cloud-starter-zookeeper-discovery")
+	implementation(project(":aot-smoke-test-third-party-hints"))
+
+	testImplementation("org.springframework.boot:spring-boot-starter-test")
+
+	aotSmokeTestImplementation(project(":aot-smoke-test-support"))
+	aotSmokeTestImplementation("org.awaitility:awaitility:4.2.0")
+}
+
+aotSmokeTest {
+	webApplication = true
+}

cloud-discovery-zookeeper/docker-compose.yml

@@ -0,0 +1,6 @@
+version: '3'
+services:
+  zookeeper:
+    image: zookeeper:latest
+    ports:
+      - "2181:2181"

cloud-discovery-zookeeper/src/aotSmokeTest/java/com/example/cloud/discovery/zookeeper/ZookeeperDiscoveryClientApplicationAotTests.java

@@ -0,0 +1,23 @@
+package com.example.cloud.discovery.zookeeper;
+
+import java.time.Duration;
+
+import org.awaitility.Awaitility;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.aot.smoketest.support.assertj.AssertableOutput;
+import org.springframework.aot.smoketest.support.junit.AotSmokeTest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@AotSmokeTest
+class ZookeeperDiscoveryClientApplicationAotTests {
+
+	@Test
+	void shouldRegisterWithZookeeper(AssertableOutput output) {
+		Awaitility.await().atMost(Duration.ofSeconds(30))
+				.untilAsserted(() -> assertThat(output).hasLineContaining("Session establishment complete on server"));
+
+	}
+
+}

cloud-discovery-zookeeper/src/main/java/com/example/cloud/discovery/zookeeper/ZookeeperDiscoveryClientApplication.java

@@ -0,0 +1,28 @@
+package com.example.cloud.discovery.zookeeper;
+
+import org.springframework.aot.smoketest.thirdpartyhints.NettyRuntimeHints;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ImportRuntimeHints;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@ImportRuntimeHints(NettyRuntimeHints.class)
+@SpringBootApplication
+public class ZookeeperDiscoveryClientApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(ZookeeperDiscoveryClientApplication.class, args);
+	}
+
+	@RestController
+	static class TestController {
+
+		@GetMapping("/")
+		public String test() {
+			return "test";
+		}
+
+	}
+
+}

cloud-discovery-zookeeper/src/main/resources/application.yml

@@ -0,0 +1,3 @@
+spring:
+  application:
+    name: zookeeper-discovery-client

settings.gradle

@@ -40,6 +40,7 @@ include "cache-hazelcast"
 include "cache-redis"
 include "cache-simple"
 include "cache-simple-jdk-proxy"
+include "cloud-discovery-zookeeper"
 include "cloud-function-web"
 include "cloud-function-webflux"
 include "cloud-stream-kafka"