Microservices Portfolio 🚀

Welcome to my Microservices Portfolio! This repository showcases a collection of Spring Boot-based microservices projects designed for various functionalities, including AI-powered text summarization, hotel management, sentiment-based review systems, and more. Each project is built with modern Java technologies and follows a microservices architecture for scalability and modularity. Below, you'll find detailed descriptions of the prioritized projects (Text Summarizer, Hotel Management, and Review System) followed by other notable microservices.

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Table of Contents

• Text Summarizer Microservice 📝
• Hotel Management Microservices 🏨
• Sentiment-Based Product Review System 🌟
• Other Microservices
  • Auth Service App
  • Feedback Service
  • Product Catalog
• Contributing 🤝
• License 📜

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Text Summarizer Microservice 📝

This Spring Boot-based microservice leverages ONNX models for text summarization, providing a REST API and a Thymeleaf-based web interface to summarize input text using an encoder-decoder architecture. The application uses the ONNX Runtime for model inference, with placeholder preprocessing and postprocessing pipelines for tokenization.

Key Features

• Summarize text via REST API (/api/summarize) or web UI.
• Uses encoder_model.onnx and decoder_model.onnx for AI-driven summarization.
• Built with Spring Boot, Thymeleaf, and ONNX Runtime.

Setup Instructions

1. Clone the Repository:

   git clone <your-repository-url>
   cd TextSummarizer

2. Place ONNX Models:
   • Download encoder_model.onnx and decoder_model.onnx from Google Drive Folder.
   • Place them in src/main/resources/model/.
3. Install Dependencies:
   • Ensure pom.xml includes:

     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
             <version>3.4.5</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-thymeleaf</artifactId>
             <version>3.4.5</version>
         </dependency>
         <dependency>
             <groupId>com.microsoft.onnxruntime</groupId>
             <artifactId>onnxruntime</artifactId>
             <version>1.17.0</version>
         </dependency>
         <dependency>
             <groupId>ai.djl.huggingface</groupId>
             <artifactId>tokenizers</artifactId>
             <version>0.32.0</version>
         </dependency>
     </dependencies>

4. Run the Application:

   mvn spring-boot:run

5. Access:
   • REST API: http://localhost:8080/api/summarize
   • Web UI: http://localhost:8080/

Model Download

The ONNX model is too large to be included in the repo.

➡️ [Download model.onnx from Google Drive]: [https://drive.google.com/drive/folders/1USD0UmWzLojfP1NG0jOpYGXGFxa1dgWa?usp=sharing]

Notes

• Replace placeholder tokenization with Hugging Face’s tokenizer for production use.
• Use Netron (https://netron.app/) to inspect model inputs/outputs.

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Hotel Management Microservices 🏨

This project is a robust microservices-based system for managing hotel operations, including room bookings, hotel details, and user ratings. It uses Spring Cloud for service discovery and configuration, with OAuth 2.0 for secure authentication.

Key Features

• User Service: User registration, authentication, room bookings, and wallet transactions.
• Hotel Service: Add hotels/rooms, retrieve details, and list available/booked rooms.
• Booking Service: Manage room bookings and retrieve booking details.
• Rating Service: Add and retrieve hotel ratings/reviews.
• Service Registry & API Gateway: Centralized service discovery and routing.

Tech Stack

• Java, Spring Boot, Spring Cloud (Eureka, Config, Gateway)
• Spring Security, OAuth 2.0, Spring Data JPA, Spring Data MongoDB
• MySQL, MongoDB, Thymeleaf, Okta

Setup Instructions

1. Clone the Repository:

   git clone <your-repository-url>
   cd Hotel-Management-Microservices

2. Configure Services:
   • Update properties in application.properties for each microservice.
3. Run Services:

   mvn spring-boot:run

4. Check Service Status:
   • Eureka Dashboard: http://localhost:8761
   • API Gateway: http://localhost:8086

API Endpoints

• User Service: http://localhost:8086/users/register, http://localhost:8086/users/addBooking
• Hotel Service: http://localhost:8086/hotels/all, http://localhost:8086/hotels/{hotelId}
• Rating Service: http://localhost:8086/ratings/add, http://localhost:8086/ratings/hotel/{hotelId}

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Sentiment-Based Product Review System 🌟

This beginner-friendly microservices application allows users to submit product reviews and analyze their sentiment using a lexicon-based AI approach. It’s completely free, requiring no external APIs or cloud services.

Key Features

• Review Service: CRUD operations for reviews, stored in MySQL.
• Sentiment Service: Analyzes review sentiment (POSITIVE, NEUTRAL, NEGATIVE) using a local word list.
• Frontend: Simple HTML/CSS/JS interface for submitting and viewing reviews.

Tech Stack

• Java, Spring Boot, Spring Data JPA
• MySQL, HTML/CSS/JavaScript

Setup Instructions

1. Clone the Repository:

   git clone <your-repository-url>
   cd review-system

2. Set Up MySQL:

   CREATE DATABASE review_system;
   USE review_system;
   CREATE TABLE reviews (
       id BIGINT AUTO_INCREMENT PRIMARY KEY,
       product_id VARCHAR(50) NOT NULL,
       review_text TEXT NOT NULL,
       sentiment VARCHAR(20) DEFAULT 'PENDING',
       created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
   );

3. Run Services:
   • Review Service: cd review-service && mvn spring-boot:run
   • Sentiment Service: cd sentiment-service && mvn spring-boot:run
   • Frontend: cd frontend && python3 -m http.server 8000
4. Access:
   • Frontend: http://localhost:8000
   • Review API: http://localhost:8080/api/reviews
   • Sentiment API: http://localhost:8081/api/sentiment/analyze/{reviewId}

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Other Microservices

Auth Service App 🔒

• Description: A Spring Boot microservice for user authentication and authorization using OAuth 2.0 and JWT.
• Features: User login, token generation, and role-based access control.
• Tech Stack: Spring Boot, Spring Security, Okta.
• API Endpoints: http://localhost:8080/auth/login, http://localhost:8080/auth/validate.

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Feedback Service 📬

• Description: A microservice for collecting and managing user feedback.
• Features: Submit feedback, retrieve feedback by user or product, and basic analytics.
• Tech Stack: Spring Boot, Spring Data JPA, MySQL.
• API Endpoints: http://localhost:8082/feedback/submit, http://localhost:8082/feedback/all.

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Product Catalog 🛍️

• Description: A microservice to manage product listings and details.
• Features: Add, update, delete, and retrieve product information.
• Tech Stack: Spring Boot, Spring Data MongoDB, MongoDB.
• API Endpoints: http://localhost:8083/products/all, http://localhost:8083/products/{productId}.

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Contributing 🤝

Contributions are welcome! Please create an issue or submit a pull request to contribute to any of the microservices in this portfolio.

License 📜

This project is licensed under the MIT License.

Last Updated: June 25, 2025