Cloud File Management System

This is a cloud file management system based on AWS serverless architecture. It provides features such as user registration, login, file upload, download, deletion, and renaming.

Features

• User Authentication:
  • User Registration
  • User Login
  • Role-Based Access Control (Admin/User/Guest)
• File Management:
  • Upload files
  • Download files
  • List user-specific files
  • Delete files
  • Rename files

System Architecture

This project uses a serverless architecture, primarily composed of the following AWS services:

• Amazon S3: Used to host the static front-end website and store user data (in JSON format) and uploaded files.
• AWS Lambda: Executes the back-end logic, including user authentication and file operations.
• Amazon API Gateway: Acts as an intermediary between the front-end and back-end Lambda functions, providing RESTful API endpoints.
• Amazon CloudWatch: Used for logging and monitoring the execution of Lambda functions.

Architecture Diagrams

System Architecture

API Flow: User Authentication

File Operations Flow (S3)

Technology Stack

• Front-end: HTML, CSS, JavaScript
• Back-end: Python (for AWS Lambda)
• Cloud Platform: AWS (Lambda, S3, API Gateway, CloudWatch)

API Endpoints

• POST /register: Register a new user.
• POST /login: User login.
• POST /files: Upload a new file.
• GET /files?username={username}: Get the file list for a specific user.
• DELETE /files?username={username}&filename={filename}: Delete a specific file.
• PUT /files: Rename a file.

Project Structure

.
├── architectures/      # System architecture diagrams
├── code/
│   ├── backEnd/        # Back-end Lambda functions
│   │   ├── register_lambda.py
│   │   ├── login_lambda.py
│   │   └── file_manipulate_lambda.py
│   └── frontEnd/       # Front-end static pages
│       ├── login.html
│       ├── register.html
│       ├── user.html
│       └── admin.html
└── report/             # Project reports and documents

Setup and Deployment

1. Configure AWS S3:

   • Create an S3 bucket (e.g., awslambda0521).
   • Create users/, users/profiles/, and files/ folders in the bucket.
   • Upload the front-end files (code/frontEnd/) to the root of the S3 bucket and enable static website hosting.

2. Deploy Lambda Functions:

   • Create separate Lambda functions for register_lambda.py, login_lambda.py, and file_manipulate_lambda.py.
   • Ensure the Lambda functions have the necessary IAM permissions to access the S3 bucket.
   • In file_manipulate_lambda.py, set the output_bucket variable to your S3 bucket name.

3. Configure API Gateway:

   • Create a new HTTP API.
   • Create corresponding resources and methods (POST, GET, DELETE, PUT) for each Lambda function.
   • Integrate the API Gateway requests with the corresponding Lambda functions.
   • Enable CORS (Cross-Origin Resource Sharing).
   • Deploy the API.

4. Update Front-end Configuration:

   • In the front-end JavaScript files, update the API Gateway URL to your deployed API endpoint.