Tema 6 (Serea Filip)

lab-6-api-gateway/api-gateway-project/bin/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

lab-6-api-gateway/api-gateway-project/bin/pom.xml

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.6.5</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.example</groupId>
+    <artifactId>api-gateway-project</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>api-gateway-project</name>
+    <description>api-gateway-project</description>
+    <properties>
+        <java.version>11</java.version>
+        <spring-cloud.version>2021.0.1</spring-cloud.version>
+    </properties>
+
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webflux</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-gateway</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring-cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

lab-6-api-gateway/api-gateway-project/bin/src/main/resources/application.yml

@@ -0,0 +1,6 @@
+server:
+  port: 8080
+#TODO use eureka to discover the URL for the service1 and service2
+#TODO configure spring cloud gateway to route the request to downstream services (service1 and service2) based on the paths(/api/greeting, /product)
+#TODO for greeting endpoint add a route to accept requests to /greeting but before calling service1 it must append api before the greeting path (HINT: rewrite path filter)
+#and method types (GET,POST)

lab-6-api-gateway/api-gateway-project/pom.xml

@@ -32,7 +32,10 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-gateway</artifactId>
         </dependency>
-
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-netflix-eureka-server</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
@@ -43,6 +46,11 @@
             <artifactId>reactor-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
     <dependencyManagement>
         <dependencies>
@@ -65,4 +73,4 @@
         </plugins>
     </build>
 
-</project>
+</project>

lab-6-api-gateway/api-gateway-project/src/main/java/com/example/apigatewayproject/ApiGatewayProjectApplication.java

@@ -2,7 +2,9 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 
+@EnableEurekaClient
 @SpringBootApplication
 public class ApiGatewayProjectApplication {
 

lab-6-api-gateway/api-gateway-project/src/main/resources/application.yml

@@ -1,6 +1,33 @@
 server:
   port: 8080
+  address: 0.0.0.0
+
 #TODO use eureka to discover the URL for the service1 and service2
+
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://localhost:3000/eureka/
+    register-with-eureka: true
+    fetch-registry: true
+
+spring:
+  application:
+    name: gateway
+  main:
+    web-application-type: reactive
+  cloud:
+    gateway:
+      routes:
+      - id: service1
+        uri: http://localhost:8081
+        predicates:
+          - Path=/api/greeting/**
+      - id: service2
+        uri: http://localhost:8082
+        predicates:
+          - Path=/product/**
+
 #TODO configure spring cloud gateway to route the request to downstream services (service1 and service2) based on the paths(/api/greeting, /product)
 #TODO for greeting endpoint add a route to accept requests to /greeting but before calling service1 it must append api before the greeting path (HINT: rewrite path filter)
-#and method types (GET,POST)
+#and method types (GET,POST) 

lab-6-api-gateway/service1/pom.xml

@@ -18,10 +18,10 @@
         <spring-cloud.version>2021.0.1</spring-cloud.version>
     </properties>
     <dependencies>
-      <!--  <dependency>
+        <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
-        </dependency>-->
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-actuator</artifactId>
@@ -30,7 +30,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
-
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-netflix-eureka-client</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
@@ -58,4 +61,4 @@
         </plugins>
     </build>
 
-</project>
+</project>

lab-6-api-gateway/service1/src/main/java/com/example/service1/Service1Application.java

@@ -2,7 +2,9 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 
+@EnableEurekaClient
 @SpringBootApplication
 public class Service1Application {
 
@@ -16,5 +18,4 @@ public static void main(String[] args) {
 	// 3. print request headers
 	// 4. register the service in eureka
 
-
 }

lab-6-api-gateway/service1/src/main/java/com/example/service1/controller/Service1Controller.java

@@ -0,0 +1,27 @@
+package com.example.service1.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Map;
+
+import org.springframework.http.HttpStatus;
+
+@RestController
+@RequestMapping("/api")
+public class Service1Controller {
+
+	@ResponseStatus(HttpStatus.OK)
+    @GetMapping(value = "/greeting/{name}")
+    public String greeting(@PathVariable String name, @RequestHeader Map<String, String> headers) {
+		System.out.println("Headers:");
+        for(Map.Entry<String,String> header : headers.entrySet()) {
+        	System.out.println(header);
+        }
+        return String.format("Hello %s.", name);
+    }
+}

lab-6-api-gateway/service1/src/main/resources/application.yml

@@ -1,2 +1,14 @@
 server:
-  port: 8081
+  port: 8081
+  address: 0.0.0.0
+
+spring:
+  application:
+    name: service1
+
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://localhost:3000/eureka/
+    register-with-eureka: true
+    fetch-registry: true

lab-6-api-gateway/service2/pom.xml

@@ -26,16 +26,32 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
-        <!--<dependency>
+        <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
-        </dependency>-->
+        </dependency>
 
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-netflix-eureka-client</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
     </dependencies>
     <dependencyManagement>
         <dependencies>
@@ -58,4 +74,4 @@
         </plugins>
     </build>
 
-</project>
+</project>

lab-6-api-gateway/service2/src/main/java/com/example/service2/Product.java

@@ -0,0 +1,24 @@
+package com.example.service2;
+
+import com.sun.istack.NotNull;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+public class Product {
+
+    @NotNull
+    @Column(nullable = false, unique = true)
+    private String name;
+
+    @NotNull
+    @Column(nullable = false, unique = true)
+    private int quantity;
+}

lab-6-api-gateway/service2/src/main/java/com/example/service2/Service2Application.java

@@ -2,7 +2,9 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 
+@EnableEurekaClient
 @SpringBootApplication
 public class Service2Application {
 

lab-6-api-gateway/service2/src/main/java/com/example/service2/Service2Controller.java

@@ -0,0 +1,34 @@
+package com.example.service2;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/product")
+public class Service2Controller {
+
+    private List<Product> products = new ArrayList<Product>();
+
+    @ResponseStatus(HttpStatus.OK)
+    @PostMapping()
+    public void addProduct(@RequestBody Product product, @RequestHeader Map<String, String> headers) {
+    	for(Map.Entry<String,String> header : headers.entrySet()) {
+        	System.out.println(header);
+        }
+        products.add(product);
+    }
+
+    @ResponseStatus(HttpStatus.OK)
+    @GetMapping(produces = MediaType.APPLICATION_JSON_VALUE)
+    public List<Product> getProducts(@RequestHeader Map<String, String> headers) {
+    	for(Map.Entry<String,String> header : headers.entrySet()) {
+        	System.out.println(header);
+        }
+        return products;
+    }
+}