Tema 5 Eureka + Tema 6 API-Gateway

eureka/persons-server/pom.xml

@@ -70,6 +70,48 @@
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-tx</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-tx</artifactId>
+            <version>5.3.15</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-jpa</artifactId>
+            <version>2.6.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-commons</artifactId>
+            <version>2.6.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate.javax.persistence</groupId>
+            <artifactId>hibernate-jpa-2.1-api</artifactId>
+            <version>2.2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core</artifactId>
+            <version>6.0.0.Alpha6</version>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-core</artifactId>
+            <version>5.2.12.Final</version>
+        </dependency>
+        <dependency>
+            <groupId>net.bytebuddy</groupId>
+            <artifactId>byte-buddy</artifactId>
+        </dependency>
 
     </dependencies>
     <dependencyManagement>

eureka/persons-server/src/main/java/com/eureka/persons/PersonsController.java

@@ -1,14 +1,17 @@
 package com.eureka.persons;
 
+import com.eureka.persons.base.AbstractEntity;
+import com.eureka.persons.ex.NotFoundException;
 import com.eureka.persons.person.Person;
 import com.eureka.persons.services.PersonService;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
 
-import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.List;
+import java.util.Optional;
 
 @RestController
 @RequestMapping("/persons")
@@ -26,7 +29,10 @@ public PersonsController(PersonService personService) {
     @ResponseStatus(HttpStatus.OK)
     @GetMapping(produces = MediaType.APPLICATION_JSON_VALUE)
     public List<Person> list() {
-        return new ArrayList<>();
+        List<Person> people = personService.findAll();
+        people.sort(Comparator.comparing(AbstractEntity::getId));
+
+        return people;
     }
 
     /**
@@ -36,6 +42,11 @@ public List<Person> list() {
     @ResponseStatus(HttpStatus.CREATED)
     @PostMapping
     public void create(@RequestBody Person person, BindingResult result) {
+        if (result.hasErrors()) {
+            throw new PersonsException(HttpStatus.BAD_REQUEST, "Person could not be created!");
+        }
+
+        personService.save(person);
     }
 
     /**
@@ -48,7 +59,7 @@ public void create(@RequestBody Person person, BindingResult result) {
     @ResponseStatus(HttpStatus.OK)
     @GetMapping(value = "/{id}", produces = MediaType.APPLICATION_JSON_VALUE)
     public Person show(@PathVariable Long id) {
-        return new Person();
+        return personService.findById(id).orElseThrow(() -> new NotFoundException(Person.class, id));
     }
 
     /**
@@ -62,6 +73,16 @@ public Person show(@PathVariable Long id) {
     @ResponseStatus(HttpStatus.NO_CONTENT)
     @PutMapping("/{id}")
     public void update(@RequestBody Person updatedPerson, @PathVariable Long id) {
+        Person person = show(id);
+
+        person.setUsername(updatedPerson.getUsername());
+        person.setFirstName(updatedPerson.getFirstName());
+        person.setLastName(updatedPerson.getLastName());
+        person.setPassword(updatedPerson.getPassword());
+        person.setHiringDate(updatedPerson.getHiringDate());
+        person.setNewPassword(updatedPerson.getNewPassword());
+
+        personService.save(person);
     }
 
     /**
@@ -73,5 +94,7 @@ public void update(@RequestBody Person updatedPerson, @PathVariable Long id) {
     @ResponseStatus(HttpStatus.NO_CONTENT)
     @DeleteMapping("/{id}")
     public void delete(@PathVariable Long id) {
+        Person person = show(id);
+        personService.delete(person);
     }
 }

eureka/persons-server/src/main/java/com/eureka/persons/PersonsServer.java

@@ -5,11 +5,13 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 
 import java.io.IOException;
 
 @EntityScan(basePackages = "com.eureka.persons")
 @SpringBootApplication
+@EnableEurekaClient
 public class PersonsServer {
 
     private static Logger logger = LoggerFactory.getLogger(PersonsServer.class);

eureka/persons-server/src/main/java/com/eureka/persons/base/AbstractEntity.java

@@ -1,17 +1,25 @@
 package com.eureka.persons.base;
 
-import com.eureka.persons.util.DateProcessor;
-import com.fasterxml.jackson.annotation.JsonFormat;
-import lombok.Getter;
-import lombok.Setter;
-import org.springframework.format.annotation.DateTimeFormat;
-
-import javax.persistence.*;
 import java.io.Serializable;
 import java.time.LocalDateTime;
 import java.util.Comparator;
 import java.util.Objects;
 
+import javax.persistence.Column;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+import javax.persistence.Version;
+
+import org.springframework.format.annotation.DateTimeFormat;
+
+import com.eureka.persons.util.DateProcessor;
+import com.fasterxml.jackson.annotation.JsonFormat;
+
+import lombok.Getter;
+import lombok.Setter;
+
 @MappedSuperclass
 @Getter
 @Setter
@@ -24,6 +32,14 @@ public abstract class AbstractEntity implements Serializable {
     @Column(updatable = false)
     protected Long id;
 
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
     @Version
     protected int version;
 

eureka/persons-server/src/main/java/com/eureka/persons/person/Person.java

@@ -23,7 +23,8 @@
 @Setter
 @NoArgsConstructor
 public class Person extends AbstractEntity {
-    interface BasicValidation{}
+    interface BasicValidation {
+    }
 
     @NotNull(groups = BasicValidation.class)
     @Size(min = 3, max = 30, groups = BasicValidation.class)
@@ -77,6 +78,54 @@ public String toString() {
         return String.format("Person[username='%s', firstName='%s', lastName='%s', hiringDate='%s']\n",
                 username, firstName, lastName, hiringDate.toString());
 
+
+    }
+
+    public String getUsername() {
+        return username;
     }
 
-}
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public LocalDateTime getHiringDate() {
+        return hiringDate;
+    }
+
+    public void setHiringDate(LocalDateTime hiringDate) {
+        this.hiringDate = hiringDate;
+    }
+
+    public String getNewPassword() {
+        return newPassword;
+    }
+
+    public void setNewPassword(String newPassword) {
+        this.newPassword = newPassword;
+    }
+}

eureka/persons-server/src/main/resources/persons-server.yml

@@ -25,6 +25,11 @@ server:
 
 # Discovery Server Access
 #TODO here you add configurations for eureka client
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://localhost:3000/eureka/
+    fetchRegistry: true
 
 info:
   app:

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

@@ -1,5 +1,31 @@
 server:
   port: 8080
+  address: 0.0.0.0
+
+  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 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)

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>
@@ -30,24 +30,27 @@
             <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>
             <scope>test</scope>
         </dependency>
     </dependencies>
-<dependencyManagement>
-    <dependencies>
-        <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-dependencies</artifactId>
-            <version>${spring-cloud.version}</version>
-            <type>pom</type>
-            <scope>import</scope>
-        </dependency>
-    </dependencies>
-</dependencyManagement>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring-cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
 
     <build>
         <plugins>

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 {
 

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

@@ -0,0 +1,21 @@
+package com.example.service1.controller;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Map;
+
+@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);
+    }
+}