Jv logger solution

.gitignore

@@ -1,3 +1,4 @@
 .idea/*
 *.iml
 target/*
+logs/*

pom.xml

@@ -19,10 +19,15 @@
 
     <dependencies>
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>4.12</version>
-            <scope>test</scope>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>2.25.4</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-api</artifactId>
+            <version>2.25.4</version>
         </dependency>
     </dependencies>
     <build>

src/main/java/mate/academy/Main.java

@@ -6,15 +6,19 @@
 import mate.academy.service.AuthenticationServiceImpl;
 import mate.academy.service.OrderService;
 import mate.academy.service.OrderServiceImpl;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 public class Main {
+    private static final Logger LOGGER = LogManager.getLogger();
+
     public static void main(String[] args) {
         AuthenticationService authenticationService = new AuthenticationServiceImpl();
         User user;
         try {
             user = authenticationService.login("bob", "1234");
         } catch (AuthenticationException e) {
-            e.printStackTrace();
+            LOGGER.error("User authentication was failed. Params: login - {}", "bob", e);
             return;
         }
         OrderService orderService = new OrderServiceImpl();

src/main/java/mate/academy/service/AuthenticationServiceImpl.java

@@ -2,11 +2,16 @@
 
 import mate.academy.exception.AuthenticationException;
 import mate.academy.model.User;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 public class AuthenticationServiceImpl implements AuthenticationService {
+    private static final Logger LOGGER = LogManager.getLogger();
+
     @Override
     public User login(String login, String password) throws AuthenticationException {
-        //TODO: add corresponding log message about method login was called
+        LOGGER.info("Login method was called. Params: login - {}", login);
+
         User user = findByLogin(login);
         if (!user.getPassword().equals(password)) {
             throw new AuthenticationException("Username or password are incorrect");

src/main/java/mate/academy/service/OrderServiceImpl.java

@@ -4,11 +4,16 @@
 import java.util.List;
 import mate.academy.model.Order;
 import mate.academy.model.Product;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 public class OrderServiceImpl implements OrderService {
+    private static final Logger LOGGER = LogManager.getLogger();
+
     @Override
     public Order completeOrder(Long userId) {
-        // TODO: add log message about method completeOrder was called
+        LOGGER.info("completeOrder method was called. Params: userId - {}", userId);
+
         List<Product> products = getAllProductsFromShoppingCart(userId);
         Order order = new Order(products, userId);
         // NOTE: In production ready code this order identifier should be generated by DB
@@ -24,7 +29,9 @@ private List<Product> getAllProductsFromShoppingCart(Long userId) {
         Product macBook = new Product("MacBook Air 2020", BigDecimal.valueOf(1399));
         Product xiaomi = new Product("Xiaomi 12", BigDecimal.valueOf(499));
         List<Product> products = List.of(iphone, macBook, xiaomi);
-        // TODO: add log message about successful fetched data from DB
+
+        LOGGER.info("Data from DB was successfully fetched. Params: userId - {}", userId);
+
         return products;
     }
 }

src/main/resources/log4j2.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration  status="WARN"
+                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                xmlns="https://logging.apache.org/xml/ns"
+                xsi:schemaLocation="
+                       https://logging.apache.org/xml/ns
+                       https://logging.apache.org/xml/ns/log4j-config-2.xsd">
+
+    <Appenders>
+        <Console name="CONSOLE" target="SYSTEM_OUT">
+            <PatternLayout>
+                <Pattern>%d{HH:mm:ss.SSS} [%t] %-5level %logger{36}:%L - %msg%n</Pattern>
+            </PatternLayout>
+        </Console>
+        <File name="FILE" fileName="logs/app.log" append="true">
+            <PatternLayout>
+                <Pattern>%d{HH:mm:ss.SSS} [%t] %-5level %logger{36}:%L - %msg%n</Pattern>
+            </PatternLayout>
+        </File>
+    </Appenders>
+
+    <Loggers>
+        <Root level="INFO">
+            <AppenderRef ref="CONSOLE"/>
+            <AppenderRef ref="FILE"/>
+        </Root>
+    </Loggers>
+
+</Configuration>