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Merge pull request #2140 from tschiman/master

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BAEL-947 Gateway Pattern
This commit is contained in:
slavisa-baeldung 2017-06-24 18:02:40 +02:00 committed by GitHub
commit 61bea8493d
8 changed files with 167 additions and 80 deletions
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4
spring-cloud/spring-cloud-bootstrap/gateway/pom.xml
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@ -44,6 +44,10 @@
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zipkin</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
</dependencies>

6
spring-cloud/spring-cloud-bootstrap/gateway/src/main/java/com/baeldung/spring/cloud/bootstrap/gateway/GatewayApplication.java
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@ -1,5 +1,7 @@
package com.baeldung.spring.cloud.bootstrap.gateway;
import com.baeldung.spring.cloud.bootstrap.gateway.client.book.BooksClient;
import com.baeldung.spring.cloud.bootstrap.gateway.client.rating.RatingsClient;
import com.netflix.appinfo.InstanceInfo;
import com.netflix.discovery.EurekaClient;
import org.springframework.beans.factory.annotation.Autowired;
@ -8,6 +10,7 @@ import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
import org.springframework.cloud.netflix.ribbon.RibbonClientSpecification;
import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
@ -16,6 +19,8 @@ import org.springframework.cloud.sleuth.zipkin.HttpZipkinSpanReporter;
import org.springframework.cloud.sleuth.zipkin.ZipkinProperties;
import org.springframework.cloud.sleuth.zipkin.ZipkinSpanReporter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.client.RestTemplate;
import zipkin.Span;
@ -25,6 +30,7 @@ import java.util.List;
@SpringBootApplication
@EnableZuulProxy
@EnableEurekaClient
@EnableFeignClients
public class GatewayApplication {
public static void main(String[] args) {
SpringApplication.run(GatewayApplication.class, args);

46
spring-cloud/spring-cloud-bootstrap/gateway/src/main/java/com/baeldung/spring/cloud/bootstrap/gateway/client/book/Book.java Normal file
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@ -0,0 +1,46 @@
package com.baeldung.spring.cloud.bootstrap.gateway.client.book;
import com.baeldung.spring.cloud.bootstrap.gateway.client.rating.Rating;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import java.util.List;
@JsonIgnoreProperties(ignoreUnknown = true)
public class Book {
private Long id;
private String author;
private String title;
private List<Rating> ratings;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public List<Rating> getRatings() {
return ratings;
}
public void setRatings(List<Rating> ratings) {
this.ratings = ratings;
}
}

10
spring-cloud/spring-cloud-bootstrap/gateway/src/main/java/com/baeldung/spring/cloud/bootstrap/gateway/client/book/BooksClient.java Normal file
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@ -0,0 +1,10 @@
package com.baeldung.spring.cloud.bootstrap.gateway.client.book;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.web.bind.annotation.*;
@FeignClient(value = "book-service")
public interface BooksClient {
@RequestMapping(method = RequestMethod.GET, value="/books/{bookId}")
Book getBookById(@PathVariable("bookId") Long bookId);
}

34
spring-cloud/spring-cloud-bootstrap/gateway/src/main/java/com/baeldung/spring/cloud/bootstrap/gateway/client/rating/Rating.java Normal file
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@ -0,0 +1,34 @@
package com.baeldung.spring.cloud.bootstrap.gateway.client.rating;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
@JsonIgnoreProperties(ignoreUnknown = true)
public class Rating {
private Long id;
private Long bookId;
private int stars;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getBookId() {
return bookId;
}
public void setBookId(Long bookId) {
this.bookId = bookId;
}
public int getStars() {
return stars;
}
public void setStars(int stars) {
this.stars = stars;
}
}

15
spring-cloud/spring-cloud-bootstrap/gateway/src/main/java/com/baeldung/spring/cloud/bootstrap/gateway/client/rating/RatingsClient.java Normal file
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@ -0,0 +1,15 @@
package com.baeldung.spring.cloud.bootstrap.gateway.client.rating;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import java.util.List;
@FeignClient(value = "rating-service")
public interface RatingsClient {
@RequestMapping(method = RequestMethod.GET, value="/ratings")
List<Rating> getRatingsByBookId(@RequestParam("bookId") Long bookId, @RequestHeader("Cookie") String session);
}

32
spring-cloud/spring-cloud-bootstrap/gateway/src/main/java/com/baeldung/spring/cloud/bootstrap/gateway/controller/CombinedController.java Normal file
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@ -0,0 +1,32 @@
package com.baeldung.spring.cloud.bootstrap.gateway.controller;
import com.baeldung.spring.cloud.bootstrap.gateway.client.book.Book;
import com.baeldung.spring.cloud.bootstrap.gateway.client.book.BooksClient;
import com.baeldung.spring.cloud.bootstrap.gateway.client.rating.Rating;
import com.baeldung.spring.cloud.bootstrap.gateway.client.rating.RatingsClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
@RestController
@RequestMapping("/combined")
public class CombinedController {
private final BooksClient booksClient;
private final RatingsClient ratingsClient;
@Autowired
public CombinedController(BooksClient booksClient, RatingsClient ratingsClient) {
this.booksClient = booksClient;
this.ratingsClient = ratingsClient;
}
@GetMapping
public Book getCombinedResponse(@RequestParam Long bookId, @CookieValue("SESSION") String session){
Book book = booksClient.getBookById(bookId);
List<Rating> ratings = ratingsClient.getRatingsByBookId(bookId, "SESSION="+session);
book.setRatings(ratings);
return book;
}
}

100
spring-cloud/spring-cloud-bootstrap/gateway/src/test/java/com/baeldung/spring/cloud/bootstrap/gateway/LiveTest.java
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@ -1,5 +1,7 @@
package com.baeldung.spring.cloud.bootstrap.gateway;
import com.baeldung.spring.cloud.bootstrap.gateway.client.book.Book;
import com.baeldung.spring.cloud.bootstrap.gateway.client.rating.Rating;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import io.restassured.RestAssured;
import io.restassured.authentication.FormAuthConfig;
@ -80,7 +82,9 @@ public class LiveTest {
@Test
public void whenAddnewRating_thenSuccess() {
final Rating rating = new Rating(1L, 4);
final Rating rating = new Rating();
rating.setBookId(1L);
rating.setStars(4);
// request the protected resource
final Response ratingResponse = RestAssured.given()
@ -98,7 +102,9 @@ public class LiveTest {
@Test
public void whenAddnewBook_thenSuccess() {
final Book book = new Book("Baeldung", "How to spring cloud");
final Book book = new Book();
book.setTitle("How to spring cloud");
book.setAuthor("Baeldung");
// request the protected resource
final Response bookResponse = RestAssured.given()
@ -115,83 +121,17 @@ public class LiveTest {
}
@JsonIgnoreProperties(ignoreUnknown = true)
public static class Book {
private Long id;
private String author;
private String title;
public Book() {
}
public Book(String author, String title) {
this.author = author;
this.title = title;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Test
public void accessCombinedEndpoint() {
final Response response = RestAssured.given()
.auth()
.form("user", "password", formConfig)
.get(ROOT_URI + "/combined?bookId=1");
Assert.assertEquals(HttpStatus.OK.value(), response.getStatusCode());
Assert.assertNotNull(response.getBody());
final Book result = response.as(Book.class);
Assert.assertEquals(new Long(1), result.getId());
Assert.assertNotNull(result.getRatings());
Assert.assertTrue(result.getRatings().size() > 0);
}
@JsonIgnoreProperties(ignoreUnknown = true)
public static class Rating {
private Long id;
private Long bookId;
private int stars;
public Rating() {
}
public Rating(Long bookId, int stars) {
this.bookId = bookId;
this.stars = stars;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getBookId() {
return bookId;
}
public void setBookId(Long bookId) {
this.bookId = bookId;
}
public int getStars() {
return stars;
}
public void setStars(int stars) {
this.stars = stars;
}
}
}