Update javaxval/src/test/java/org/baeldung/javaxval/messageinterpolator/ParameterMessageInterpolaterIntegrationTest.java

update to use the givenX_whenY_thenZ naming convention for tests

Co-Authored-By: KevinGilmore <kpg102@gmail.com>

spring-cloud/spring-cloud-zuul-fallback/api-gateway/src/main/java/com/baeldung/spring/cloud/apigateway/ApiGatewayApplication.java

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

spring-cloud/spring-cloud-zuul-fallback/api-gateway/src/main/java/com/baeldung/spring/cloud/apigateway/fallback/GatewayClientResponse.java

@@ -0,0 +1,69 @@
+package com.baeldung.spring.cloud.apigateway.fallback;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.client.ClientHttpResponse;
+
+public class GatewayClientResponse implements ClientHttpResponse {
+
+    private HttpStatus status;
+    private String message;
+
+    public GatewayClientResponse(HttpStatus status, String message) {
+        this.status = status;
+        this.message = message;
+    }
+
+    @Override
+    public HttpStatus getStatusCode() throws IOException {
+        return status;
+    }
+
+    @Override
+    public int getRawStatusCode() throws IOException {
+        return status.value();
+    }
+
+    @Override
+    public String getStatusText() throws IOException {
+        return status.getReasonPhrase();
+    }
+
+    @Override
+    public void close() {
+    }
+
+    @Override
+    public InputStream getBody() throws IOException {
+        return new ByteArrayInputStream(message.getBytes());
+    }
+
+    @Override
+    public HttpHeaders getHeaders() {
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+        return headers;
+    }
+
+    public HttpStatus getStatus() {
+        return status;
+    }
+
+    public void setStatus(HttpStatus status) {
+        this.status = status;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+}

spring-cloud/spring-cloud-zuul-fallback/api-gateway/src/main/java/com/baeldung/spring/cloud/apigateway/fallback/GatewayServiceFallback.java

@@ -0,0 +1,29 @@
+package com.baeldung.spring.cloud.apigateway.fallback;
+
+import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.stereotype.Component;
+
+import com.netflix.hystrix.exception.HystrixTimeoutException;
+
+@Component
+class GatewayServiceFallback implements FallbackProvider {
+
+    private static final String DEFAULT_MESSAGE = "Service not available.";
+
+    @Override
+    public String getRoute() {
+        return "*"; // or return null;
+    }
+
+    @Override
+    public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
+        if (cause instanceof HystrixTimeoutException) {
+            return new GatewayClientResponse(HttpStatus.GATEWAY_TIMEOUT, DEFAULT_MESSAGE);
+        } else {
+            return new GatewayClientResponse(HttpStatus.INTERNAL_SERVER_ERROR, DEFAULT_MESSAGE);
+        }
+    }
+
+}

spring-cloud/spring-cloud-zuul-fallback/api-gateway/src/main/java/com/baeldung/spring/cloud/apigateway/fallback/WeatherServiceFallback.java

@@ -0,0 +1,29 @@
+package com.baeldung.spring.cloud.apigateway.fallback;
+
+import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.stereotype.Component;
+
+import com.netflix.hystrix.exception.HystrixTimeoutException;
+
+@Component
+class WeatherServiceFallback implements FallbackProvider {
+
+    private static final String DEFAULT_MESSAGE = "Weather information is not available.";
+
+    @Override
+    public String getRoute() {
+        return "weather-service";
+    }
+
+    @Override
+    public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
+        if (cause instanceof HystrixTimeoutException) {
+            return new GatewayClientResponse(HttpStatus.GATEWAY_TIMEOUT, DEFAULT_MESSAGE);
+        } else {
+            return new GatewayClientResponse(HttpStatus.INTERNAL_SERVER_ERROR, DEFAULT_MESSAGE);
+        }
+    }
+
+}

spring-cloud/spring-cloud-zuul-fallback/api-gateway/src/main/resources/application.yml

@@ -0,0 +1,22 @@
+spring:
+   application:
+      name: api-gateway
+server:
+   port: 7070
+  
+zuul:
+   igoredServices: '*'
+   routes:
+      weather-service:
+         path: /weather/**
+         serviceId: weather-service
+         strip-prefix: false
+
+ribbon:
+   eureka:
+      enabled: false
+
+weather-service:
+   ribbon:
+      listOfServers: localhost:8080
+