Task Manager Microservices Application

This is a microservices-based task management system built with Spring Boot and Spring Cloud Gateway. It allows users to register, log in, and manage their tasks securely using JWT authentication.

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Services

1. Auth Service (authservice)

• Handles user registration, login, and JWT authentication.
• Issues JWT tokens containing the userId upon login.
• Validates JWT tokens for security.
• Endpoints:
  • POST /auth/register – Register a new user.
  • POST /auth/login – Authenticate a user and return a JWT.
  • GET /auth/validate – Validate a JWT token.
  • GET /auth/user – Retrieve user information from JWT.

2. Task Service (taskservice)

• Manages tasks for authenticated users.
• Supports CRUD operations:
  • POST /tasks – Create a new task.
  • GET /tasks – Get all tasks for the current user.
  • GET /tasks/{id} – Get a specific task by ID.
  • PUT /tasks/{id} – Update an existing task.
  • DELETE /tasks/{id} – Delete a task.
• Extracts userId from JWT to ensure user-specific task access.

3. API Gateway

• Routes requests to the appropriate service.
• Validates JWT tokens before forwarding requests.
• Handles cross-cutting concerns like CORS and security.
• Routes configured:
  • /auth/** → Auth Service
  • /api/tasks/** → Task Service

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Workflow

1. User Registration & Login

   • User registers via Auth Service.
   • Logs in to receive a JWT token.

2. Task Operations

   • All task requests go through the API Gateway.
   • Gateway validates the JWT token.
   • Task Service extracts userId from the token.
   • CRUD operations are performed only for the authenticated user.

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Key Features

• Token-based authentication (JWT)
• Microservices architecture with API Gateway routing
• Secure, per-user task access
• No repeated calls to Auth Service per request

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Configuration

API Gateway (application.yml)

server:
  port: 4000

jwt:
  secret: V1JkR2F5bU9XbXhZcVBlTmRWRWl3aXhqY2N0ZkZsU1o=

auth:
  service:
    url: http://localhost:4001

spring:
  cloud:
    gateway:
      server:
        webflux:
          routes:
            - id: auth-service-route
              uri: http://localhost:4001
              predicates:
                - Path=/auth/**
              filters:
                - StripPrefix=1

            - id: task-service-route
              uri: http://localhost:4002
              predicates:
                - Path=/api/tasks/**
              filters:
                - StripPrefix=1
                - JwtValidation

Technology Stack

• Spring Boot

• Spring Data JPA (H2)

• Spring Cloud Gateway

• JWT (io.jsonwebtoken)

• Java 21

• Angular