Step44

03.microservices/limits-service/pom.xml

@@ -26,10 +26,17 @@
 	</properties>
 
 	<dependencies>
+
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-starter-config</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-hystrix</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-starter-bus-amqp</artifactId>

03.microservices/limits-service/src/main/java/com/in28minutes/microservices/limitsservice/LimitsConfigurationController.java

@@ -5,6 +5,7 @@
 import org.springframework.web.bind.annotation.RestController;
 
 import com.in28minutes.microservices.limitsservice.bean.LimitConfiguration;
+import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
 
 @RestController
 public class LimitsConfigurationController {
@@ -18,4 +19,15 @@ public LimitConfiguration retrieveLimitsFromConfigurations() {
 				configuration.getMinimum());
 		return limitConfiguration;
 	}
+
+	@GetMapping("/fault-tolerance-example")
+	@HystrixCommand(fallbackMethod="fallbackRetrieveConfiguration")
+	public LimitConfiguration retrieveConfiguration() {
+		throw new RuntimeException("Not available");
+	}
+
+	public LimitConfiguration fallbackRetrieveConfiguration() {
+		return new LimitConfiguration(999, 9);
+	}
+
 }

03.microservices/limits-service/src/main/java/com/in28minutes/microservices/limitsservice/LimitsServiceApplication.java

@@ -2,8 +2,10 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.netflix.hystrix.EnableHystrix;
 
 @SpringBootApplication
+@EnableHystrix
 public class LimitsServiceApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(LimitsServiceApplication.class, args);