Fixed readme and submodule issue

README.md

-### Project Structure 
+# Project Structure
 
+This repository is organized as follows:
 
-commands.sh(commands used to setup the database sharding and replication configserver and router)
-gitlab.txt (the link for the repo)
-movies-generator-mongodb(old project taken from the provided github repo don't open this folder)
-Report (folder containing report for the homework)
-data (folder that is ignored with .gitignore contains that actual db data and shards)
-movie.shard-app (spring boot command line app written for this homework it stress test with 10000 records and 5000 users record)
-README.md (this file)
+- **commands.sh**  
+  Contains the commands used to set up the MongoDB sharding, replication, config server, and router.
+
+- **gitlab.txt**  
+  Includes the link to the GitLab repository.
+
+- **movies-generator-mongodb**  
+  Old project taken from the provided GitHub repository. *(Do not open or modify this folder.)*
+
+- **Report/**  
+  Folder containing the homework report.
+
+- **data/**  
+  Ignored via `.gitignore`. Contains the actual database data and shard files.
+
+- **movie.shard-app**  
+  A Spring Boot command-line application written for this homework.  
+  Used to stress test the system with multiple operations.
+
+- **README.md**  
+  This file.

movies-generator-mongodb @ 6cb5b187

-Subproject commit 6cb5b18792db4ca0e9a5722dd36273d88d04edd6

movies-generator-mongodb/pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         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>
+
+    <groupId>distributed.systems</groupId>
+    <artifactId>insert-many-movies</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <release>11</release>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <mainClass>MoviesGenerator</mainClass>
+                        </manifest>
+                    </archive>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.9</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mongodb</groupId>
+            <artifactId>mongodb-driver-sync</artifactId>
+            <version>5.0.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-log4j12</artifactId>
+            <version>1.7.6</version>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>1.2.17</version>
+            <scope>runtime</scope>
+        </dependency>
+
+    </dependencies>
+</project>
\ No newline at end of file

movies-generator-mongodb/src/main/java/MoviesGenerator.java

+import com.mongodb.client.MongoClient;
+import com.mongodb.client.MongoClients;
+import com.mongodb.client.MongoCollection;
+import com.mongodb.client.MongoDatabase;
+import org.apache.commons.lang3.RandomStringUtils;
+import org.bson.Document;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+public class MoviesGenerator {
+
+    //router address
+    private static final String MONGO_DB_URL = "mongodb://172.29.3.101:27033/";
+    private static final String DB_NAME = "videodb";
+    private static final String COLLECTION_NAME = "movies";
+
+    private static final Random random = new Random();
+
+    public static void main(String[] args) {
+        MongoDatabase onlineSchoolDb = connectToMongoDB(MONGO_DB_URL, DB_NAME);
+        generateMovies(10000, onlineSchoolDb, COLLECTION_NAME);
+    }
+
+    private static MongoDatabase connectToMongoDB(String url, String dbName) {
+        MongoClient mongoClient = MongoClients.create(MONGO_DB_URL);
+        return mongoClient.getDatabase(dbName);
+    }
+
+    private static void generateMovies(int numberOfMovies, MongoDatabase database, String collectionName) {
+        MongoCollection<Document> collection = database.getCollection(collectionName);
+
+        List<Document> documents = new ArrayList<>();
+        System.out.println("Generating " + numberOfMovies + " movies");
+        for (int movieIndex = 0; movieIndex < numberOfMovies; movieIndex++) {
+            Document document = new Document();
+            document.append("title", generateName())
+                    .append("directors", generateDirectorNames())
+                    .append("rating", generateRating())
+                    .append("cast", generateCast());
+            documents.add(document);
+        }
+
+        collection.insertMany(documents);
+
+        System.out.println("Finished generating movies");
+    }
+
+
+    private static List<String> generateDirectorNames() {
+        int numberOfDirectors = random.nextInt(3) + 1;
+        List<String> directors = new ArrayList<>(numberOfDirectors);
+
+        for (int i = 0; i < numberOfDirectors; i++) {
+            String firstName = generateName();
+            String lastName = generateName();
+            directors.add(firstName + " " + lastName);
+        }
+
+        return directors;
+    }
+
+
+    private static int generateYear() {
+        return random.nextInt(119) + 1900;
+    }
+
+
+    private static float generateRating() {
+        return random.nextFloat() * 10.0f;
+    }
+
+
+    private static List<String> generateCast() {
+        int numberOfActors = random.nextInt(20) + 10;
+        List<String> actors = new ArrayList<>(numberOfActors);
+
+        for (int i = 0; i < numberOfActors; i++) {
+            String firstName = generateName();
+            String lastName = generateName();
+            actors.add(firstName + " " + lastName);
+        }
+
+        return actors;
+    }
+
+    private static String generateName() {
+        StringBuilder name = new StringBuilder();
+
+        name.append(RandomStringUtils.randomAlphabetic(1).toUpperCase());
+        name.append(RandomStringUtils.randomAlphabetic(5, 10).toLowerCase());
+
+        return name.toString();
+    }
+}

movies-generator-mongodb/src/main/resources/log4j.properties

+# Root logger option
+log4j.rootLogger=ERROR, stdout
+# Direct log messages to stdout
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{HH:mm:ss} %-5p %c{1}:%L - %m%n