Set up spring app with menu driven HDFS
This commit is contained in:
vedang29
@@ -0,0 +1,54 @@
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package com.skycrate.backend.skycrateBackend;
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import com.skycrate.backend.skycrateBackend.controller.HDFScontroller;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.CommandLineRunner;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class SkycrateBackendApplication implements CommandLineRunner {
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@Autowired
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private HDFScontroller hdfsController;
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public static void main(String[] args) {
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SpringApplication.run(SkycrateBackendApplication.class, args);
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}
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@Override
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public void run(String... args) {
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try {
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hdfsController.run(); // ✅ Run the instance method, not static
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} catch (Exception e) {
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System.err.println("❌ Error running CLI: " + e.getMessage());
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e.printStackTrace();
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}
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}
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}
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//package com.skycrate.backend.skycrateBackend;
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//
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//import com.skycrate.backend.skycrateBackend.controller.HDFScontroller;
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//import org.springframework.boot.SpringApplication;
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//import org.springframework.boot.autoconfigure.SpringBootApplication;
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//
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//@SpringBootApplication
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//public class SkycrateBackendApplication {
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//
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// public static void main(String[] args) {
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// SpringApplication.run(SkycrateBackendApplication.class, args);
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// }
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//
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// @Override
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// public void run(String... args) {
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// try {
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// HDFScontroller.run(); // ✅ Run the instance method, not static
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// } catch (Exception e) {
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// System.err.println("❌ Error running CLI: " + e.getMessage());
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// e.printStackTrace();
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// }
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// }
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//
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//}
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@@ -0,0 +1,52 @@
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//package com.skycrate.backend.skycrateBackend.config;
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//
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//import org.apache.hadoop.conf.Configuration;
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//import org.apache.hadoop.fs.FileSystem;
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//import org.apache.hadoop.security.UserGroupInformation;
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//import org.springframework.context.annotation.Bean;
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//
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//import java.io.IOException;
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//import java.net.URI;
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//import java.security.PrivilegedExceptionAction;
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//
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//@org.springframework.context.annotation.Configuration
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//public class HDFSConfig {
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//
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// public static FileSystem getHDFS() throws Exception {
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// Configuration conf = new Configuration();
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// conf.set("fs.defaultFS", "hdfs://192.168.29.56:9000");
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// conf.set("hadoop.security.authentication", "simple");
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//
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// // Disable security manager
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// System.setProperty("java.security.manager", "allow");
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//
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// // Required for Java 17+: Explicitly configure UGI
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// UserGroupInformation.setConfiguration(conf);
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// UserGroupInformation ugi = UserGroupInformation.createRemoteUser("hdfs");
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//
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// // Login user explicitly and return FileSystem instance
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// return ugi.doAs((PrivilegedExceptionAction<FileSystem>) () ->
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// FileSystem.get(new URI("hdfs://192.168.29.56:9000"), conf)
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// );
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// }
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//}
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package com.skycrate.backend.skycrateBackend.config;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.security.UserGroupInformation;
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import org.springframework.context.annotation.Bean;
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import java.net.URI;
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import java.security.PrivilegedExceptionAction;
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public class HDFSConfig {
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public static FileSystem getHDFS() throws Exception {
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Configuration conf = new Configuration();
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conf.set("fs.defaultFS", "hdfs://192.168.29.56:9000");
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return FileSystem.get(new URI("hdfs://192.168.29.56:9000"), conf);
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}
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}
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@@ -0,0 +1,239 @@
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package com.skycrate.backend.skycrateBackend.controller;
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import com.skycrate.backend.skycrateBackend.dto.User;
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import com.skycrate.backend.skycrateBackend.repository.UserManager;
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import com.skycrate.backend.skycrateBackend.services.HDFSOperations;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import java.util.Scanner;
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@Component
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public class HDFScontroller implements Runnable {
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private final UserManager userManager;
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private final HDFSOperations hdfsOperations;
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@Autowired
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public HDFScontroller(UserManager userManager, HDFSOperations hdfsOperations) {
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this.userManager = userManager;
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this.hdfsOperations = hdfsOperations;
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}
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@Override
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public void run() {
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Scanner scanner = new Scanner(System.in);
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while (true) {
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System.out.print("Enter your username: ");
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String username = scanner.nextLine();
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System.out.print("Enter your password: ");
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String password = scanner.nextLine();
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if (!userManager.authenticate(username, password)) {
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System.out.println("❌ Authentication failed. Exiting...");
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return;
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}
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User user;
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try {
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user = userManager.getUser(username);
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} catch (Exception e) {
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System.out.println("❌ Error creating user: " + e.getMessage());
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return;
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}
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while (true) {
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System.out.println("\nChoose an option:");
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System.out.println("1. Create a folder");
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System.out.println("2. Upload a file (encrypted)");
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System.out.println("3. Upload a file to a specific folder (encrypted)");
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System.out.println("4. Download a file");
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System.out.println("5. Delete a file");
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System.out.println("6. Delete a folder");
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System.out.println("7. List files and folders");
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System.out.println("8. Exit");
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int choice = scanner.nextInt();
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scanner.nextLine(); // Consume newline
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try {
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switch (choice) {
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case 1:
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System.out.print("Enter folder name: ");
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hdfsOperations.createFolder(scanner.nextLine());
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break;
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case 2:
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System.out.print("Enter file path to upload: ");
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String filePath = scanner.nextLine();
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System.out.print("Enter HDFS destination path: ");
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String hdfsDestinationFolder = scanner.nextLine();
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System.out.print("Enter the name for the uploaded file: ");
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String uploadedFileName = scanner.nextLine();
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hdfsOperations.uploadFile(filePath, hdfsDestinationFolder, uploadedFileName, user);
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break;
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case 3:
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System.out.print("Enter folder name to upload to: ");
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String targetFolder = scanner.nextLine();
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System.out.print("Enter file path to upload: ");
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String fileToUpload = scanner.nextLine();
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System.out.print("Enter the name for the uploaded file: ");
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String uploadedFileNameSpecific = scanner.nextLine();
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hdfsOperations.uploadFile(fileToUpload, targetFolder, uploadedFileNameSpecific, user);
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break;
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case 4:
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System.out.print("Enter HDFS file path to download: ");
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String hdfsFilePath = scanner.nextLine();
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System.out.print("Enter local path to save the downloaded file: ");
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String localDownloadPath = scanner.nextLine();
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hdfsOperations.downloadFile(hdfsFilePath, localDownloadPath, user);
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break;
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case 5:
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System.out.print("Enter HDFS file path to delete: ");
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hdfsOperations.deleteFile(scanner.nextLine());
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break;
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case 6:
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System.out.print("Enter HDFS folder path to delete: ");
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hdfsOperations.deleteFolder(scanner.nextLine());
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break;
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case 7:
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System.out.print("Enter HDFS path to list files and folders: ");
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hdfsOperations.listFilesAndFolders(scanner.nextLine());
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break;
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case 8:
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System.out.println("✅ Exiting...");
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return;
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default:
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System.out.println("⚠️ Invalid option. Please try again.");
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}
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} catch (Exception e) {
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System.out.println("❌ Operation failed: " + e.getMessage());
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e.printStackTrace();
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}
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}
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}
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}
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}
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//package com.skycrate.backend.skycrateBackend.controller;
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//
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//import com.skycrate.backend.skycrateBackend.dto.User;
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//import com.skycrate.backend.skycrateBackend.repository.UserManager;
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//import com.skycrate.backend.skycrateBackend.services.HDFSOperations;
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//import org.springframework.beans.factory.annotation.Autowired;
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//import org.springframework.stereotype.Component;
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//
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//import java.util.Scanner;
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//
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//@Component
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//public class HDFScontroller implements Runnable {
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//
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// private final UserManager userManager;
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// private final HDFSOperations hdfsOperations;
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//
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// @Autowired
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// public HDFScontroller(UserManager userManager, HDFSOperations hdfsOperations) {
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// this.userManager = userManager;
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// this.hdfsOperations = hdfsOperations;
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// }
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//
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// @Override
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// public void run() {
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// Scanner scanner = new Scanner(System.in);
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//
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// while (true) {
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// System.out.print("Enter your username: ");
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// String username = scanner.nextLine();
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//
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// System.out.print("Enter your password: ");
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// String password = scanner.nextLine();
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//
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// if (!userManager.authenticate(username, password)) {
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// System.out.println("X Authentication failed. Exiting...");
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// return;
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// }
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//
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// User user;
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// try {
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// user = userManager.getUser(username);
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// } catch (Exception e) {
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// System.out.println("X Error creating user: " + e.getMessage());
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// return;
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// }
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//
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// while (true) {
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// System.out.println("\nChoose an option:");
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// System.out.println("1. Create a folder");
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// System.out.println("2. Upload a file (encrypted)");
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// System.out.println("3. Upload a file to a specific folder (encrypted)");
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// System.out.println("4. Download a file");
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// System.out.println("5. Delete a file");
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// System.out.println("6. Delete a folder");
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// System.out.println("7. List files and folders");
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// System.out.println("8. Exit");
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//
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// int choice = scanner.nextInt();
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// scanner.nextLine(); // Consume newline
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//
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// switch (choice) {
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// case 1:
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// System.out.print("Enter folder name: ");
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// hdfsOperations.createFolder(scanner.nextLine());
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// break;
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// case 2:
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// System.out.print("Enter file path to upload: ");
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// String filePath = scanner.nextLine();
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// System.out.print("Enter HDFS destination path: ");
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// String hdfsDestinationFolder = scanner.nextLine();
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// System.out.print("Enter the name for the uploaded file: ");
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// String uploadedFileName = scanner.nextLine();
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// hdfsOperations.uploadFile(filePath, hdfsDestinationFolder, uploadedFileName, user);
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// break;
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// case 3:
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// System.out.print("Enter folder name to upload to: ");
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// String targetFolder = scanner.nextLine();
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// System.out.print("Enter file path to upload: ");
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// String fileToUpload = scanner.nextLine();
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// System.out.print("Enter the name for the uploaded file: ");
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// String uploadedFileNameSpecific = scanner.nextLine();
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// hdfsOperations.uploadFile(fileToUpload, targetFolder, uploadedFileNameSpecific, user);
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// break;
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// case 4:
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// System.out.print("Enter HDFS file path to download: ");
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// String hdfsFilePath = scanner.nextLine();
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// System.out.print("Enter local path to save the downloaded file: ");
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// String localDownloadPath = scanner.nextLine();
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// hdfsOperations.downloadFile(hdfsFilePath, localDownloadPath, user);
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// break;
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// case 5:
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// System.out.print("Enter HDFS file path to delete: ");
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// hdfsOperations.deleteFile(scanner.nextLine());
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// break;
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// case 6:
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// System.out.print("Enter HDFS folder path to delete: ");
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// hdfsOperations.deleteFolder(scanner.nextLine());
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// break;
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// case 7:
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// System.out.print("Enter HDFS path to list files and folders: ");
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// hdfsOperations.listFilesAndFolders(scanner.nextLine());
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// break;
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// case 8:
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// System.out.println("Exiting...");
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// return;
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// default:
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// System.out.println("Invalid option. Please try again.");
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// }
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// }
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// }
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// }
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//}
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@@ -0,0 +1,23 @@
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package com.skycrate.backend.skycrateBackend.dto;
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import com.skycrate.backend.skycrateBackend.services.EncryptionUtil;
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import java.security.KeyPair;
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public class User {
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private String username;
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private KeyPair keyPair;
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public User(String username) throws Exception {
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this.username = username;
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this.keyPair = EncryptionUtil.generateKeyPair();
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}
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public String getUsername() {
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return username;
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}
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public KeyPair getKeyPair() {
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return keyPair;
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}
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}
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@@ -0,0 +1,25 @@
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package com.skycrate.backend.skycrateBackend.repository;
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import com.skycrate.backend.skycrateBackend.dto.User;
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import org.springframework.stereotype.Service;
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import java.util.HashMap;
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import java.util.Map;
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@Service
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public class UserManager {
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private Map<String, User> users = new HashMap<>();
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public User getUser(String username) throws Exception {
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if (!users.containsKey(username)) {
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users.put(username, new User(username));
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}
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return users.get(username);
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}
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public boolean authenticate(String username, String password) {
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// Implement your authentication logic here
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return "admin".equals(username) && "password123".equals(password);
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}
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}
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@@ -0,0 +1,75 @@
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package com.skycrate.backend.skycrateBackend.services;
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import javax.crypto.Cipher;
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import javax.crypto.KeyGenerator;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.SecretKeySpec;
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import java.security.*;
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public class EncryptionUtil {
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private static final String RSA_ALGORITHM = "RSA";
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private static final String AES_ALGORITHM = "AES";
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private static final int RSA_KEY_SIZE = 2048;
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private static final int AES_KEY_SIZE = 256;
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public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
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KeyPairGenerator keyGen = KeyPairGenerator.getInstance(RSA_ALGORITHM);
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keyGen.initialize(RSA_KEY_SIZE);
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return keyGen.generateKeyPair();
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}
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public static byte[] encrypt(byte[] data, PublicKey publicKey) throws Exception {
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// Generate a random AES key
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KeyGenerator keyGen = KeyGenerator.getInstance(AES_ALGORITHM);
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keyGen.init(AES_KEY_SIZE);
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SecretKey aesKey = keyGen.generateKey();
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// Encrypt the data with the AES key
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Cipher aesCipher = Cipher.getInstance(AES_ALGORITHM);
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aesCipher.init(Cipher.ENCRYPT_MODE, aesKey);
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byte[] encryptedData = aesCipher.doFinal(data);
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// Encrypt the AES key with the RSA public key
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Cipher rsaCipher = Cipher.getInstance(RSA_ALGORITHM);
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rsaCipher.init(Cipher.ENCRYPT_MODE, publicKey);
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byte[] encryptedAesKey = rsaCipher.doFinal(aesKey.getEncoded());
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// Combine the encrypted AES key and the encrypted data
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byte[] combined = new byte[encryptedAesKey.length + encryptedData.length + 4];
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System.arraycopy(encryptedAesKey, 0, combined, 0, encryptedAesKey.length);
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System.arraycopy(encryptedData, 0, combined, encryptedAesKey.length, encryptedData.length);
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// Store the length of the encrypted AES key at the beginning
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combined[encryptedAesKey.length + encryptedData.length] = (byte) (encryptedAesKey.length >> 24);
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combined[encryptedAesKey.length + encryptedData.length + 1] = (byte) (encryptedAesKey.length >> 16);
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combined[encryptedAesKey.length + encryptedData.length + 2] = (byte) (encryptedAesKey.length >> 8);
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combined[encryptedAesKey.length + encryptedData.length + 3] = (byte) (encryptedAesKey.length);
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return combined;
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}
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public static byte[] decrypt(byte[] encryptedData, PrivateKey privateKey) throws Exception {
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// Read the length of the encrypted AES key
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int aesKeyLength = ((encryptedData[encryptedData.length - 4] & 0xFF) << 24) |
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((encryptedData[encryptedData.length - 3] & 0xFF) << 16) |
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((encryptedData[encryptedData.length - 2] & 0xFF) << 8) |
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(encryptedData[encryptedData.length - 1] & 0xFF);
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// Extract the encrypted AES key and the encrypted data
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byte[] encryptedAesKey = new byte[aesKeyLength];
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byte[] encryptedDataBytes = new byte[encryptedData.length - aesKeyLength - 4];
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System.arraycopy(encryptedData, 0, encryptedAesKey, 0, aesKeyLength);
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System.arraycopy(encryptedData, aesKeyLength, encryptedDataBytes, 0, encryptedDataBytes.length);
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// Decrypt the AES key with the RSA private key
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Cipher rsaCipher = Cipher.getInstance(RSA_ALGORITHM);
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rsaCipher.init(Cipher.DECRYPT_MODE, privateKey);
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byte[] aesKeyBytes = rsaCipher.doFinal(encryptedAesKey);
|
||||
SecretKey aesKey = new SecretKeySpec(aesKeyBytes, AES_ALGORITHM);
|
||||
|
||||
// Decrypt the data with the AES key
|
||||
Cipher aesCipher = Cipher.getInstance(AES_ALGORITHM);
|
||||
aesCipher.init(Cipher.DECRYPT_MODE, aesKey);
|
||||
return aesCipher.doFinal(encryptedDataBytes);
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,106 @@
|
||||
package com.skycrate.backend.skycrateBackend.services;
|
||||
|
||||
|
||||
import com.skycrate.backend.skycrateBackend.config.HDFSConfig;
|
||||
import com.skycrate.backend.skycrateBackend.dto.User;
|
||||
import org.apache.hadoop.fs.*;
|
||||
import org.springframework.stereotype.Service;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.nio.file.Files;
|
||||
import java.nio.file.Paths;
|
||||
|
||||
@Service
|
||||
public class HDFSOperations {
|
||||
public static void uploadFile(String localPath, String hdfsPath, String uploadedFileName, User user) throws Exception {
|
||||
FileSystem fs = HDFSConfig.getHDFS();
|
||||
byte[] data = Files.readAllBytes(Paths.get(localPath)); // Read file as bytes
|
||||
byte[] encryptedData = EncryptionUtil.encrypt(data, user.getKeyPair().getPublic());
|
||||
|
||||
// Save encryptedData to a temporary file and upload it
|
||||
String tempFilePath = localPath + ".enc";
|
||||
Files.write(Paths.get(tempFilePath), encryptedData); // Write bytes to temp file
|
||||
|
||||
// Construct the final HDFS path using the provided uploaded file name
|
||||
String finalHdfsPath = hdfsPath.endsWith("/") ? hdfsPath + uploadedFileName : hdfsPath + "/" + uploadedFileName;
|
||||
|
||||
fs.copyFromLocalFile(new Path(tempFilePath), new Path(finalHdfsPath));
|
||||
System.out.println("✅ File uploaded: " + finalHdfsPath);
|
||||
|
||||
// Clean up temporary file
|
||||
Files.delete(Paths.get(tempFilePath));
|
||||
}
|
||||
|
||||
public static void downloadFile(String hdfsPath, String localPath, User user) throws Exception {
|
||||
FileSystem fs = HDFSConfig.getHDFS();
|
||||
String tempFilePath = localPath + ".enc";
|
||||
|
||||
fs.copyToLocalFile(new Path(hdfsPath), new Path(tempFilePath));
|
||||
|
||||
// Read the encrypted file as bytes
|
||||
byte[] encryptedData = Files.readAllBytes(Paths.get(tempFilePath));
|
||||
byte[] decryptedData = EncryptionUtil.decrypt(encryptedData, user.getKeyPair().getPrivate());
|
||||
|
||||
Files.write(Paths.get(localPath), decryptedData); // Write decrypted bytes to local file
|
||||
System.out.println("✅ File downloaded: " + localPath);
|
||||
|
||||
// Clean up temporary file
|
||||
Files.delete(Paths.get(tempFilePath));
|
||||
}
|
||||
|
||||
public static void createFolder(String hdfsPath) throws Exception {
|
||||
FileSystem fs = HDFSConfig.getHDFS();
|
||||
Path path = new Path(hdfsPath);
|
||||
if (!fs.exists(path)) {
|
||||
fs.mkdirs(path);
|
||||
System.out.println("✅ Folder created: " + hdfsPath);
|
||||
} else {
|
||||
System.out.println("⚠️ Folder already exists: " + hdfsPath);
|
||||
}
|
||||
}
|
||||
|
||||
public static void deleteFile(String hdfsFilePath) throws Exception {
|
||||
FileSystem fs = HDFSConfig.getHDFS();
|
||||
Path path = new Path(hdfsFilePath);
|
||||
if (fs.exists(path)) {
|
||||
fs.delete(path, false); // false means do not recursively delete
|
||||
System.out.println("✅ File deleted: " + hdfsFilePath);
|
||||
} else {
|
||||
System.out.println("⚠️ File does not exist: " + hdfsFilePath);
|
||||
}
|
||||
}
|
||||
|
||||
public static void deleteFolder(String hdfsFolderPath) throws Exception {
|
||||
FileSystem fs = HDFSConfig.getHDFS();
|
||||
Path path = new Path(hdfsFolderPath);
|
||||
if (fs.exists(path)) {
|
||||
fs.delete(path, true); // true means recursively delete
|
||||
System.out.println("✅ Folder deleted: " + hdfsFolderPath);
|
||||
} else {
|
||||
System.out.println("⚠️ Folder does not exist: " + hdfsFolderPath);
|
||||
}
|
||||
}
|
||||
|
||||
public static void listFilesAndFolders(String hdfsPath) throws Exception {
|
||||
FileSystem fs = HDFSConfig.getHDFS();
|
||||
Path path = new Path(hdfsPath);
|
||||
|
||||
if (!fs.exists(path)) {
|
||||
System.out.println("⚠️ Path does not exist: " + hdfsPath);
|
||||
return;
|
||||
}
|
||||
|
||||
System.out.println("Listing files and folders in: " + hdfsPath);
|
||||
listFilesAndFoldersRecursively(fs, path, "");
|
||||
}
|
||||
|
||||
private static void listFilesAndFoldersRecursively(FileSystem fs, Path path, String indent) throws IOException {
|
||||
FileStatus[] fileStatuses = fs.listStatus(path);
|
||||
for (FileStatus fileStatus : fileStatuses) {
|
||||
System.out.println(indent + (fileStatus.isDirectory() ? "📁 " : "📄 ") + fileStatus.getPath().getName());
|
||||
if (fileStatus.isDirectory()) {
|
||||
listFilesAndFoldersRecursively(fs, fileStatus.getPath(), indent + " "); // Indent for subdirectories
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,10 @@
|
||||
spring.application.name=skycrateBackend
|
||||
|
||||
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQLDialect
|
||||
spring.datasource.username=kshitij
|
||||
spring.datasource.password=loa_dngLLA8729
|
||||
spring.datasource.url=jdbc:mysql://192.168.29.55:3306/skycrate
|
||||
|
||||
spring.jpa.hibernate.ddl-auto=update
|
||||
spring.jpa.show-sql=true
|
||||
spring.jpa.properties.hibernate.format_sql=true
|
||||
+13
@@ -0,0 +1,13 @@
|
||||
package com.skycrate.backend.skycrateBackend;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.springframework.boot.test.context.SpringBootTest;
|
||||
|
||||
@SpringBootTest
|
||||
class SkycrateBackendApplicationTests {
|
||||
|
||||
@Test
|
||||
void contextLoads() {
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user