First Task Java 8,11,17

jmp-cloud-bank-impl/module-info.java

@@ -0,0 +1,5 @@
+module application {
+    uses org.x.service.BankService;
+    requires jmp.cloud.bank.impl;
+    requires jmp.dto;
+}

jmp-cloud-bank-impl/pom.xml

@@ -0,0 +1,28 @@
+<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.x</groupId>
+        <artifactId>java-backend</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>jmp-cloud-bank-impl</artifactId>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.24</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>

jmp-cloud-bank-impl/src/main/java/org/x/Main.java

@@ -0,0 +1,26 @@
+package org.x;
+
+import org.x.dto.BankCard;
+import org.x.dto.BankCardType;
+import org.x.dto.User;
+import org.x.service.BankService;
+import org.x.service.BankServiceImpl;
+
+public class Main {
+  public static void main(String[] args) {
+    BankService bankService = new BankServiceImpl();
+    User user = new User();
+    user.setName("John");
+    user.setSurname("Doe");
+
+    BankCard creditCard = bankService.createCard(user, BankCardType.CREDIT);
+    BankCard debitCard = bankService.createCard(user, BankCardType.DEBIT);
+
+    System.out.println("Credit Card: " + creditCard);
+    System.out.println("Debit Card: " + debitCard);
+
+    System.out.println("All subscriptions: " + bankService.getAllSubscriptions());
+    System.out.println("Subscriptions by condition: " + bankService
+        .getAllSubscriptionsByCondition(subscription -> subscription.getPrice() > 5));
+  }
+}

jmp-cloud-bank-impl/src/main/java/org/x/dto/BankCard.java

@@ -0,0 +1,17 @@
+package org.x.dto;
+
+import lombok.Data;
+
+@Data
+public class BankCard {
+  private User user;
+  private BankCardType bankCardType;
+  private String cardNumber;
+  private String cvv;
+  private String expirationDate;
+
+  public BankCard(User user, BankCardType bankCardType) {
+    this.user = user;
+    this.bankCardType = bankCardType;
+  }
+}

jmp-cloud-bank-impl/src/main/java/org/x/dto/BankCardType.java

@@ -0,0 +1,6 @@
+package org.x.dto;
+
+public enum BankCardType {
+    CREDIT,
+    DEBIT
+}

jmp-cloud-bank-impl/src/main/java/org/x/dto/CreditBankCard.java

@@ -0,0 +1,8 @@
+package org.x.dto;
+
+public class CreditBankCard extends BankCard {
+  public CreditBankCard(User user) {
+    super(user, BankCardType.CREDIT);
+  }
+
+}

jmp-cloud-bank-impl/src/main/java/org/x/dto/DebitBankCard.java

@@ -0,0 +1,8 @@
+package org.x.dto;
+
+public class DebitBankCard extends BankCard {
+    public DebitBankCard(User user) {
+        super(user, BankCardType.DEBIT);
+    }
+
+}

jmp-cloud-bank-impl/src/main/java/org/x/dto/Subscription.java

@@ -0,0 +1,18 @@
+package org.x.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.With;
+
+@Data
+@With
+@AllArgsConstructor
+@NoArgsConstructor
+public class Subscription {
+  private Long id;
+  private String name;
+  private String description;
+  private Double price;
+  private Boolean active;
+}

jmp-cloud-bank-impl/src/main/java/org/x/dto/User.java

@@ -0,0 +1,18 @@
+package org.x.dto;
+
+import java.time.LocalDate;
+
+import lombok.Data;
+
+@Data
+public class User {
+  private String name;
+  private String surname;
+  private String email;
+  private String password;
+  private String phone;
+  private String address;
+  private String passport;
+  private String role;
+  private LocalDate birthDate;
+}

jmp-cloud-bank-impl/src/main/java/org/x/exception/SubscriptionNotFoundException.java

@@ -0,0 +1,7 @@
+package org.x.exception;
+
+public class SubscriptionNotFoundException extends RuntimeException {
+    public SubscriptionNotFoundException(String message) {
+        super(message);
+    }
+}

jmp-cloud-bank-impl/src/main/java/org/x/service/BankService.java

@@ -0,0 +1,23 @@
+package org.x.service;
+
+import java.time.LocalDate;
+import java.time.temporal.ChronoUnit;
+import java.util.List;
+import java.util.function.Predicate;
+
+import org.x.dto.BankCard;
+import org.x.dto.BankCardType;
+import org.x.dto.Subscription;
+import org.x.dto.User;
+
+public interface BankService {
+  BankCard createCard(User user, BankCardType bankCardType);
+
+  List<Subscription> getAllSubscriptions();
+
+  List<Subscription> getAllSubscriptionsByCondition(Predicate<Subscription> condition);
+
+  static boolean isPayableUser(User user) {
+    return ChronoUnit.YEARS.between(user.getBirthDate(), LocalDate.now()) >= 18;
+  }
+}

jmp-cloud-bank-impl/src/main/java/org/x/service/BankServiceImpl.java

@@ -0,0 +1,42 @@
+package org.x.service;
+
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+import org.x.dto.BankCard;
+import org.x.dto.BankCardType;
+import org.x.dto.CreditBankCard;
+import org.x.dto.DebitBankCard;
+import org.x.dto.Subscription;
+import org.x.dto.User;
+
+public class BankServiceImpl implements BankService {
+
+  private static final Map<BankCardType, Function<User, BankCard>> cardCreators = Map.of(
+      BankCardType.CREDIT, CreditBankCard::new,
+      BankCardType.DEBIT, DebitBankCard::new
+  );
+
+  @Override
+  public BankCard createCard(User user, BankCardType bankCardType) {
+    return cardCreators.get(bankCardType).apply(user);
+  }
+
+  @Override
+  public List<Subscription> getAllSubscriptions() {
+    return List.of(
+        new Subscription().withId(1L).withPrice(4.99),
+        new Subscription().withId(3L).withPrice(9.99),
+        new Subscription().withId(2L).withPrice(7.99),
+        new Subscription().withId(4L).withPrice(5.99));
+  }
+
+  @Override
+  public List<Subscription> getAllSubscriptionsByCondition(Predicate<Subscription> condition) {
+    return getAllSubscriptions()
+        .stream().filter(condition)
+        .toList();
+  }
+}

jmp-cloud-bank-impl/src/main/java/org/x/service/UserService.java

@@ -0,0 +1,18 @@
+package org.x.service;
+
+import java.time.LocalDate;
+import java.time.temporal.ChronoUnit;
+import java.util.List;
+
+import org.x.dto.User;
+
+public interface UserService {
+  List<User> getAllUsers();
+
+  default double getAverageUsersAge() {
+    return getAllUsers().stream()
+        .mapToDouble(user -> ChronoUnit.YEARS.between(user.getBirthDate(), LocalDate.now()))
+        .average()
+        .orElse(0);
+  }
+}

jmp-cloud-bank-impl/src/main/java/org/x/service/UserServiceImpl.java

@@ -0,0 +1,12 @@
+package org.x.service;
+
+import java.util.List;
+
+import org.x.dto.User;
+
+public class UserServiceImpl implements UserService {
+  @Override
+  public List<User> getAllUsers() {
+    return List.of();
+  }
+}

modules/54. Redis/Code Examples/bin/main/ratelimitRules.yaml

@@ -0,0 +1,17 @@
+# 2 requests per minute per account Id
+- accountId: ""
+  allowedNumberOfRequests: 2
+  timeInterval: MINUTE
+# 1 Slow request per account per minute
+- accountId: ""
+  allowedNumberOfRequests: 1
+  timeInterval: MINUTE
+  requestType: SLOW
+# 1 request for 192.168.100.150 per HOUR
+- clientIp: 192.168.100.150
+  allowedNumberOfRequests: 1
+  timeInterval: HOUR
+# 10 requests for important customer per minute
+- accountId: ImportantCustomerId
+  allowedNumberOfRequests: 10
+  timeInterval: MINUTE

modules/54. Redis/Code Examples/bin/test/redis/docker-compose.yaml

@@ -0,0 +1,37 @@
+# On windows host network mode doesn't work (expect wsl 2 backend)
+# We use --cluster-announce-ip + different ports for each instance + DNS-based nodes access to make cluster accessible from localhost
+version: "3.9"
+
+services:
+  redis-master-0:
+    image: redis:7.0.5-alpine
+    command: redis-server --cluster-enabled yes --port 30000 --cluster-port 40000 --cluster-announce-ip redis-master-0
+    ports:
+      - "30000:30000"
+      - "40000:40000"
+
+  redis-master-1:
+    image: redis:7.0.5-alpine
+    command: redis-server --cluster-enabled yes --port 30001 --cluster-port 40001 --cluster-announce-ip redis-master-1
+    ports:
+      - "30001:30001"
+      - "40001:40001"
+
+
+  redis-master-2:
+    image: redis:7.0.5-alpine
+    command: redis-server --cluster-enabled yes --port 30002 --cluster-port 40002 --cluster-announce-ip redis-master-2
+    ports:
+      - "30002:30002"
+      - "40002:40002"
+
+
+  redis-init-cluster:
+    image: redis:7.0.5-alpine
+    command: redis-cli --cluster create redis-master-0:30000 redis-master-1:30001 redis-master-2:30002 --cluster-replicas 0 --cluster-yes
+    restart: "no"
+    depends_on:
+      - redis-master-0
+      - redis-master-1
+      - redis-master-2
+

pom.xml

@@ -7,6 +7,10 @@
     <groupId>org.x</groupId>
     <artifactId>java-backend</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <packaging>pom</packaging>
+    <modules>
+        <module>jmp-cloud-bank-impl</module>
+    </modules>
 
     <properties>
         <maven.compiler.source>17</maven.compiler.source>