Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

spring-5-reactive-client/src/main/java/com/baeldung/reactive/enums/Role.java

@@ -0,0 +1,5 @@
+package com.baeldung.reactive.enums;
+
+public enum Role {
+    ENGINEER, SENIOR_ENGINEER, LEAD_ENGINEER
+}

spring-5-reactive-client/src/main/java/com/baeldung/reactive/model/Employee.java

@@ -0,0 +1,64 @@
+package com.baeldung.reactive.model;
+
+
+import com.baeldung.reactive.enums.Role;
+
+public class Employee {
+    private Integer employeeId;
+    private String firstName;
+    private String lastName;
+    private Integer age;
+    private Role role;
+
+    public Employee() {
+    }
+
+    public Employee(Integer employeeId, String firstName, String lastName, Integer age, Role role) {
+        this.employeeId = employeeId;
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.age = age;
+        this.role = role;
+    }
+
+    public Integer getEmployeeId() {
+        return employeeId;
+    }
+
+    public void setEmployeeId(Integer employeeId) {
+        this.employeeId = employeeId;
+    }
+
+    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 Integer getAge() {
+        return age;
+    }
+
+    public void setAge(Integer age) {
+        this.age = age;
+    }
+
+    public Role getRole() {
+        return role;
+    }
+
+    public void setRole(Role role) {
+        this.role = role;
+    }
+}
+

spring-5-reactive-client/src/main/java/com/baeldung/reactive/model/Foo.java

@@ -0,0 +1,13 @@
+package com.baeldung.reactive.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+@AllArgsConstructor
+@Data
+public class Foo {
+
+    private long id;
+    private String name;
+
+}

spring-5-reactive-client/src/main/java/com/baeldung/reactive/service/EmployeeService.java

@@ -0,0 +1,55 @@
+package com.baeldung.reactive.service;
+import com.baeldung.reactive.model.Employee;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Mono;
+
+public class EmployeeService {
+
+    private WebClient webClient;
+    public static String PATH_PARAM_BY_ID = "/employee/{id}";
+    public static String ADD_EMPLOYEE = "/employee";
+
+    public EmployeeService(WebClient webClient) {
+        this.webClient = webClient;
+    }
+
+    public EmployeeService(String baseUrl) {
+        this.webClient = WebClient.create(baseUrl);
+    }
+
+    public Mono<Employee> getEmployeeById(Integer employeeId) {
+        return webClient
+                .get()
+                .uri(PATH_PARAM_BY_ID, employeeId)
+                .retrieve()
+                .bodyToMono(Employee.class);
+    }
+
+    public Mono<Employee> addNewEmployee(Employee newEmployee) {
+
+        return webClient
+                .post()
+                .uri(ADD_EMPLOYEE)
+                .syncBody(newEmployee)
+                .retrieve().
+                bodyToMono(Employee.class);
+    }
+
+    public Mono<Employee> updateEmployee(Integer employeeId, Employee updateEmployee) {
+
+      return  webClient
+                .put()
+                .uri(PATH_PARAM_BY_ID,employeeId)
+                .syncBody(updateEmployee)
+                .retrieve()
+                .bodyToMono(Employee.class);
+    }
+
+    public Mono<String> deleteEmployeeById(Integer employeeId) {
+        return webClient
+                .delete()
+                .uri(PATH_PARAM_BY_ID,employeeId)
+                .retrieve()
+                .bodyToMono(String.class);
+    }
+}

spring-5-reactive-client/src/main/java/com/baeldung/reactive/webclient/simultaneous/Client.java

@@ -0,0 +1,65 @@
+package com.baeldung.reactive.webclient.simultaneous;
+
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Mono;
+import reactor.core.publisher.Flux;
+import reactor.core.scheduler.Schedulers;
+
+import java.util.List;
+import java.util.logging.Logger;
+
+public class Client {
+
+    private static final Logger LOG = Logger.getLogger(Client.class.getName());
+
+    private WebClient webClient;
+
+    public Client(String uri) {
+        this.webClient = WebClient.create(uri);
+    }
+
+    public Mono<User> getUser(int id) {
+        LOG.info(String.format("Calling getUser(%d)", id));
+
+        return webClient.get()
+            .uri("/user/{id}", id)
+            .retrieve()
+            .bodyToMono(User.class);
+    }
+
+    public Mono<Item> getItem(int id) {
+        return webClient.get()
+            .uri("/item/{id}", id)
+            .retrieve()
+            .bodyToMono(Item.class);
+    }
+
+    public Mono<User> getOtherUser(int id) {
+        return webClient.get()
+            .uri("/otheruser/{id}", id)
+            .retrieve()
+            .bodyToMono(User.class);
+    }
+
+    public Flux<User> fetchUsers(List<Integer> userIds) {
+        return Flux.fromIterable(userIds)
+            .parallel()
+            .runOn(Schedulers.elastic())
+            .flatMap(this::getUser)
+            .ordered((u1, u2) -> u2.id() - u1.id());
+    }
+
+    public Flux<User> fetchUserAndOtherUser(int id) {
+        return Flux.merge(getUser(id), getOtherUser(id))
+            .parallel()
+            .runOn(Schedulers.elastic())
+            .ordered((u1, u2) -> u2.id() - u1.id());
+    }
+
+    public Mono<UserWithItem> fetchUserAndItem(int userId, int itemId) {
+        Mono<User> user = getUser(userId).subscribeOn(Schedulers.elastic());
+        Mono<Item> item = getItem(itemId).subscribeOn(Schedulers.elastic());
+
+        return Mono.zip(user, item, UserWithItem::new);
+    }
+}

spring-5-reactive-client/src/main/java/com/baeldung/reactive/webclient/simultaneous/Item.java

@@ -0,0 +1,17 @@
+package com.baeldung.reactive.webclient.simultaneous;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class Item {
+    private int id;
+
+    @JsonCreator
+    public Item(@JsonProperty("id") int id) {
+        this.id = id;
+    }
+
+    public int id() {
+        return id;
+    }
+}

spring-5-reactive-client/src/main/java/com/baeldung/reactive/webclient/simultaneous/User.java

@@ -0,0 +1,17 @@
+package com.baeldung.reactive.webclient.simultaneous;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class User {
+    private int id;
+
+    @JsonCreator
+    public User(@JsonProperty("id") int id) {
+        this.id = id;
+    }
+
+    public int id() {
+        return id;
+    }
+}

spring-5-reactive-client/src/main/java/com/baeldung/reactive/webclient/simultaneous/UserWithItem.java

@@ -0,0 +1,19 @@
+package com.baeldung.reactive.webclient.simultaneous;
+
+public class UserWithItem {
+    private User user;
+    private Item item;
+
+    public UserWithItem(User user, Item item) {
+        this.user = user;
+        this.item = item;
+    }
+
+    public User user() {
+        return user;
+    }
+
+    public Item item() {
+        return item;
+    }
+}