initial commit

spring-cloud/spring-cloud-eureka/pom.xml

@@ -19,6 +19,7 @@
         <module>spring-cloud-eureka-server</module>
         <module>spring-cloud-eureka-client</module>
         <module>spring-cloud-eureka-feign-client</module>
+        <module>spring-cloud-eureka-feign-client-integration-test</module>
     </modules>
 
     <dependencies>

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/pom.xml

@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>spring-cloud-eureka-feign-client-integration-test</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>spring-cloud-eureka-feign-client-integration-test</name>
+    <packaging>jar</packaging>
+    <description>Spring Cloud Eureka - Feign Client Integration Tests</description>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud-eureka</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.junit</groupId>
+                <artifactId>junit-bom</artifactId>
+                <version>${junit-jupiter.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-starter-parent</artifactId>
+                <version>${spring-cloud-dependencies.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-openfeign</artifactId>
+        </dependency>
+
+<!--        <dependency>-->
+<!--            <groupId>org.springframework.cloud</groupId>-->
+<!--            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>-->
+<!--        </dependency>-->
+
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.github.tomakehurst</groupId>
+            <artifactId>wiremock</artifactId>
+            <version>2.27.2</version>
+            <scope>test</scope>
+        </dependency>
+
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>testcontainers</artifactId>
+            <version>1.14.3</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.awaitility</groupId>
+            <artifactId>awaitility</artifactId>
+            <version>4.0.3</version>
+            <scope>test</scope>
+        </dependency>
+
+
+    </dependencies>
+
+</project>

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/main/java/com/baeldung/spring/cloud/Application.java

@@ -0,0 +1,15 @@
+package com.baeldung.spring.cloud;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.openfeign.EnableFeignClients;
+
+@EnableFeignClients
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/main/java/com/baeldung/spring/cloud/client/BooksClient.java

@@ -0,0 +1,16 @@
+package com.baeldung.spring.cloud.client;
+
+import com.baeldung.spring.cloud.model.Book;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import java.util.List;
+
+//@FeignClient(value="simple-books-client", url="${book.service.url}")
+@FeignClient("books-client")
+public interface BooksClient {
+
+    @RequestMapping("/books")
+    List<Book> getBooks();
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/main/java/com/baeldung/spring/cloud/model/Book.java

@@ -0,0 +1,15 @@
+package com.baeldung.spring.cloud.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class Book {
+
+    private String title;
+    private String author;
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/main/resources/application.yml

@@ -0,0 +1,12 @@
+#book:
+#  service:
+#    url: http://book.service.com
+
+books-client:
+  ribbon:
+    eureka:
+      enabled: false
+  listOfServers: http://book.service.com
+  ServerListRefreshInterval: 15000
+  MaxAutoRetries: 3
+  retryableStatusCodes: 503, 408

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/test/java/com/baeldung/spring/cloud/client/BooksClientIntegrationTest.java

@@ -0,0 +1,49 @@
+package com.baeldung.spring.cloud.client;
+
+import com.baeldung.spring.cloud.Application;
+import com.baeldung.spring.cloud.model.Book;
+import com.netflix.discovery.EurekaClient;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+import java.util.List;
+
+import static java.util.concurrent.TimeUnit.SECONDS;
+import static org.awaitility.Awaitility.await;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@ActiveProfiles("test")
+@EnableConfigurationProperties
+@ExtendWith(SpringExtension.class)
+@SpringBootTest(classes = Application.class, webEnvironment =  SpringBootTest.WebEnvironment.RANDOM_PORT)
+@ContextConfiguration(classes = {MockBookServiceConfig.class}, initializers = {EurekaContainerConfig.Initializer.class})
+class BooksClientIntegrationTest {
+
+    @Autowired
+    private BooksClient booksClient;
+
+    @Autowired
+    @Lazy
+    private EurekaClient eurekaClient;
+
+    @BeforeEach
+    void setUp() {
+        await().atMost(60, SECONDS).until(() -> eurekaClient.getApplications().size() > 0);
+    }
+
+    @Test
+    public void whenGetBooks_thenListBooksSizeGreaterThanZero() throws InterruptedException {
+        List<Book> books = booksClient.getBooks();
+
+        assertTrue(books.size() == 1);
+    }
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/test/java/com/baeldung/spring/cloud/client/EurekaContainerConfig.java

@@ -0,0 +1,34 @@
+package com.baeldung.spring.cloud.client;
+
+import org.jetbrains.annotations.NotNull;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.test.util.TestPropertyValues;
+import org.springframework.context.ApplicationContextInitializer;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.lifecycle.Startables;
+
+import java.util.stream.Stream;
+
+public class EurekaContainerConfig {
+
+    public static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
+
+        public static GenericContainer eurekaServer
+          = new GenericContainer("springcloud/eureka")
+          .withExposedPorts(8761);
+
+        @Override
+        public void initialize(@NotNull ConfigurableApplicationContext configurableApplicationContext) {
+
+            Startables.deepStart(Stream.of(eurekaServer)).join();
+
+            TestPropertyValues
+              .of("eureka.client.serviceUrl.defaultZone=http://localhost:" + eurekaServer.getFirstMappedPort().toString() + "/eureka")
+              .applyTo(configurableApplicationContext);
+
+        }
+
+    }
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/test/java/com/baeldung/spring/cloud/client/GreetingClientIntegrationTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.spring.cloud.client;
+
+import com.baeldung.spring.cloud.model.Book;
+import com.github.tomakehurst.wiremock.WireMockServer;
+import com.github.tomakehurst.wiremock.client.WireMock;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+import org.springframework.util.StreamUtils;
+
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.util.List;
+
+import static org.junit.Assert.assertFalse;
+
+@SpringBootTest
+@ActiveProfiles("test")
+@EnableConfigurationProperties
+@ExtendWith(SpringExtension.class)
+@ContextConfiguration(classes = {WireMockConfig.class})
+class GreetingClientIntegrationTest {
+
+    @Autowired
+    private WireMockServer wireMockServer;
+
+    @Autowired
+    private BooksClient booksClient;
+
+    @BeforeEach
+    void setUp() throws IOException {
+        wireMockServer.stubFor(WireMock.get(WireMock.urlEqualTo("/books"))
+          .willReturn(WireMock.aResponse()
+            .withStatus(HttpStatus.OK.value())
+            .withHeader("Content-Type", MediaType.APPLICATION_JSON_VALUE)
+            .withBody(StreamUtils.copyToString(getClass().getClassLoader().getResourceAsStream("payload/get-books-response.json"), Charset.defaultCharset()))));
+    }
+
+    @Test
+    public void whenGetBooks_thenListBooksSizeGreaterThanZero() {
+        List<Book> books = booksClient.getBooks();
+
+        assertFalse(books.isEmpty());
+    }
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/test/java/com/baeldung/spring/cloud/client/MockBookServiceConfig.java

@@ -0,0 +1,31 @@
+package com.baeldung.spring.cloud.client;
+
+import com.baeldung.spring.cloud.model.Book;
+import com.github.tomakehurst.wiremock.WireMockServer;
+import com.netflix.loadbalancer.Server;
+import com.netflix.loadbalancer.ServerList;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.cloud.netflix.ribbon.StaticServerList;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Collections;
+import java.util.List;
+
+import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.options;
+
+@Configuration
+@EnableAutoConfiguration
+@RestController
+public class MockBookServiceConfig {
+
+    @RequestMapping("/books")
+    public List<Book> getBooks() {
+        return Collections.singletonList(new Book("some title", "some author"));
+    }
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/test/java/com/baeldung/spring/cloud/client/WireMockConfig.java

@@ -0,0 +1,29 @@
+package com.baeldung.spring.cloud.client;
+
+import com.github.tomakehurst.wiremock.WireMockServer;
+import com.netflix.loadbalancer.Server;
+import com.netflix.loadbalancer.ServerList;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.cloud.netflix.ribbon.StaticServerList;
+import org.springframework.context.annotation.Bean;
+
+import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.options;
+
+@TestConfiguration
+public class WireMockConfig {
+
+    @Autowired
+    private WireMockServer wireMockServer;
+
+    @Bean(initMethod = "start", destroyMethod = "stop")
+    public WireMockServer booksMockService() {
+        return new WireMockServer(options().dynamicPort());
+    }
+
+    @Bean
+    public ServerList<Server> ribbonServerList() {
+        return new StaticServerList<>(new Server("localhost", wireMockServer.port()));
+    }
+
+}

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/test/resources/application-test.yml

@@ -0,0 +1,21 @@
+#book:
+#  service:
+#    url: http://localhost:9561
+
+#books-client:
+#  ribbon:
+#    listOfServers: http://localhost:9561
+
+spring:
+  application:
+    name: books-client
+
+server:
+  port: 0
+
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: ${EUREKA_URI:http://localhost:8761/eureka}
+  instance:
+    preferIpAddress: true

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client-integration-test/src/test/resources/payload/get-books-response.json

@@ -0,0 +1,10 @@
+[
+  {
+    "title": "Dune",
+    "author": "Frank Herbert"
+  },
+  {
+    "title": "Foundation",
+    "author": "Isaac Asimov"
+  }
+]