Spark graphx moved to a new project due to a incompatibility of scala compiler

spring-cloud/spring-cloud-hystrix/README.MD

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+### Relevant Articles:
+- [A Guide to Spring Cloud Netflix – Hystrix](http://www.baeldung.com/spring-cloud-netflix-hystrix)

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/pom.xml

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+<?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>feign-rest-consumer</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>feign-rest-consumer</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud-hystrix</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.baeldung.spring.cloud</groupId>
+            <artifactId>rest-producer</artifactId>
+            <version>${rest-producer.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-hystrix</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-feign</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+        <dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+    </dependencies>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-starter-parent</artifactId>
+                <version>${spring-cloud-dependencies.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <properties>
+        <rest-producer.version>1.0.0-SNAPSHOT</rest-producer.version>
+    </properties>
+</project>

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/consumer/GreetingClient.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import com.baeldung.spring.cloud.hystrix.rest.producer.GreetingController;
+import org.springframework.cloud.netflix.feign.FeignClient;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.annotation.PathVariable;
+
+@FeignClient(name = "rest-producer", url = "http://localhost:9090", fallback = GreetingClient.GreetingClientFallback.class)
+public interface GreetingClient extends GreetingController {
+    @Component
+    public static class GreetingClientFallback implements GreetingClient {
+        @Override
+        public String greeting(@PathVariable("username") String username) {
+            return "Hello User!";
+        }
+    }
+}

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/consumer/GreetingController.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class GreetingController {
+    @Autowired
+    private GreetingClient greetingClient;
+
+    @RequestMapping("/get-greeting/{username}")
+    public String getGreeting(Model model, @PathVariable("username") String username) {
+        model.addAttribute("greeting", greetingClient.greeting(username));
+        return "greeting-view";
+    }
+}

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/consumer/RestConsumerFeignApplication.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
+import org.springframework.cloud.netflix.feign.EnableFeignClients;
+import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
+
+@SpringBootApplication
+@EnableCircuitBreaker
+@EnableHystrixDashboard
+@EnableFeignClients
+public class RestConsumerFeignApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(RestConsumerFeignApplication.class, args);
+    }
+}

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/main/resources/application.properties

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+server.port=8082

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/main/resources/templates/greeting-view.html

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+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+    <head>
+        <title>Greetings from Hystrix</title>
+    </head>
+    <body>
+        <h2 th:text="${greeting}"/>
+    </body>
+</html>

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/test/java/com/baeldung/spring/cloud/hystrix/rest/consumer/SpringContextIntegrationTest.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = RestConsumerFeignApplication.class)
+@WebAppConfiguration
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+
+}

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/src/test/java/com/baeldung/spring/cloud/hystrix/rest/consumer/SpringContextTest.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = RestConsumerFeignApplication.class)
+@WebAppConfiguration
+public class SpringContextTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+
+}

spring-cloud/spring-cloud-hystrix/pom.xml

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+<?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>
+    <groupId>com.baeldung.spring.cloud</groupId>
+    <artifactId>spring-cloud-hystrix</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>spring-cloud-hystrix</name>
+    <packaging>pom</packaging>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <modules>
+        <module>rest-producer</module>
+        <module>rest-consumer</module>
+        <module>feign-rest-consumer</module>
+    </modules>
+
+</project>

spring-cloud/spring-cloud-hystrix/rest-consumer/pom.xml

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+<?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>rest-consumer</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>rest-consumer</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud-hystrix</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-hystrix</artifactId>
+            <version>${spring-cloud-starter-hystrix.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
+            <version>${spring-cloud-starter-hystrix.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring-boot-starter-web.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+            <version>${spring-boot-starter-web.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+            <version>${spring-boot-starter-web.version}</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+            <version>${spring-boot-starter-web.version}</version>
+        </dependency>
+    </dependencies>
+
+    <dependencyManagement>
+        <dependencies>
+            <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>
+    
+    <properties>
+        <!-- we need the Mockito version provided by Spring Boot -->
+        <mockito.version>1.10.19</mockito.version>
+    </properties>
+
+</project>

spring-cloud/spring-cloud-hystrix/rest-consumer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/consumer/GreetingController.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class GreetingController {
+    @Autowired
+    private GreetingService greetingService;
+
+    @RequestMapping("/get-greeting/{username}")
+    public String getGreeting(Model model, @PathVariable("username") String username) {
+        model.addAttribute("greeting", greetingService.getGreeting(username));
+        return "greeting-view";
+    }
+}

spring-cloud/spring-cloud-hystrix/rest-consumer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/consumer/GreetingService.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+@Service
+public class GreetingService {
+    @HystrixCommand(fallbackMethod = "defaultGreeting")
+    public String getGreeting(String username) {
+        return new RestTemplate().getForObject("http://localhost:9090/greeting/{username}", String.class, username);
+    }
+
+    private String defaultGreeting(String username) {
+        return "Hello User!";
+    }
+}

spring-cloud/spring-cloud-hystrix/rest-consumer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/consumer/RestConsumerApplication.java

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+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
+import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
+
+@SpringBootApplication
+@EnableCircuitBreaker
+@EnableHystrixDashboard
+public class RestConsumerApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(RestConsumerApplication.class, args);
+    }
+}

spring-cloud/spring-cloud-hystrix/rest-consumer/src/main/resources/application.properties

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+server.port=8080

spring-cloud/spring-cloud-hystrix/rest-consumer/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-cloud/spring-cloud-hystrix/rest-consumer/src/main/resources/templates/greeting-view.html

@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+    <head>
+        <title>Greetings from Hystrix</title>
+    </head>
+    <body>
+        <h2 th:text="${greeting}"/>
+    </body>
+</html>

spring-cloud/spring-cloud-hystrix/rest-consumer/src/test/java/com/baeldung/spring/cloud/hystrix/rest/consumer/SpringContextIntegrationTest.java

@@ -0,0 +1,18 @@
+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = RestConsumerApplication.class)
+@WebAppConfiguration
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+
+}

spring-cloud/spring-cloud-hystrix/rest-consumer/src/test/java/com/baeldung/spring/cloud/hystrix/rest/consumer/SpringContextTest.java

@@ -0,0 +1,18 @@
+package com.baeldung.spring.cloud.hystrix.rest.consumer;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = RestConsumerApplication.class)
+@WebAppConfiguration
+public class SpringContextTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+
+}

spring-cloud/spring-cloud-hystrix/rest-producer/pom.xml

@@ -0,0 +1,37 @@
+<?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>rest-producer</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>rest-producer</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud-hystrix</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring-boot-starter-web.version}</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <version>${spring-boot-starter-web.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+    
+    <properties>
+        <!-- we need the Mockito version provided by Spring Boot -->
+        <mockito.version>1.10.19</mockito.version>
+    </properties>
+
+</project>

spring-cloud/spring-cloud-hystrix/rest-producer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/producer/GreetingController.java

@@ -0,0 +1,9 @@
+package com.baeldung.spring.cloud.hystrix.rest.producer;
+
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+public interface GreetingController {
+    @RequestMapping("/greeting/{username}")
+    String greeting(@PathVariable("username") String username);
+}

spring-cloud/spring-cloud-hystrix/rest-producer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/producer/GreetingControllerImpl.java

@@ -0,0 +1,12 @@
+package com.baeldung.spring.cloud.hystrix.rest.producer;
+
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class GreetingControllerImpl implements GreetingController {
+    @Override
+    public String greeting(@PathVariable("username") String username) {
+        return String.format("Hello %s!\n", username);
+    }
+}

spring-cloud/spring-cloud-hystrix/rest-producer/src/main/java/com/baeldung/spring/cloud/hystrix/rest/producer/RestProducerApplication.java

@@ -0,0 +1,11 @@
+package com.baeldung.spring.cloud.hystrix.rest.producer;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class RestProducerApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(RestProducerApplication.class, args);
+    }
+}

spring-cloud/spring-cloud-hystrix/rest-producer/src/main/resources/application.properties

@@ -0,0 +1,2 @@
+spring.application.name=rest-producer
+server.port=9090

spring-cloud/spring-cloud-hystrix/rest-producer/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

spring-cloud/spring-cloud-hystrix/rest-producer/src/test/java/com/baeldung/spring/cloud/hystrix/rest/producer/SpringContextIntegrationTest.java

@@ -0,0 +1,16 @@
+package com.baeldung.spring.cloud.hystrix.rest.producer;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringContextIntegrationTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+
+}

spring-cloud/spring-cloud-hystrix/rest-producer/src/test/java/com/baeldung/spring/cloud/hystrix/rest/producer/SpringContextTest.java

@@ -0,0 +1,16 @@
+package com.baeldung.spring.cloud.hystrix.rest.producer;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringContextTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+
+}